Ampetronic T14-1Rail User guide

Ampetronic
Brand
Ampetronic
Model
T14-1Rail
Category
Musical Equipment
Type
User guide
T14-1Rail
Installation Handbook
& User Guide
www.ampetronic.com
CONTENTS
1. Safety & Box Contents ...............................................3
2. Introduction ........................................................4
3. Physical Installation .................................................4
4. Electrical Installation ................................................5
5. Loop Requirements .................................................6
6. Operations .........................................................6
7. Block Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
8. Features Overview ..................................................9
9 Ethernet Interface. ..................................................10
10. EmailNotications ..................................................18
11. Troubleshooting ....................................................19
12. TechnicalSpecicationstoIEC62489-1 ................................21
13. Warranty ..........................................................23
14. Glossary of Terms ..................................................23
Ampetronic T14-1 Installation Handbook & User Guide Page 3
TO PREVENT ELECTRIC SHOCK DO NOT REMOVE THE
COVER. THERE ARE NO USER SERVICEABLE PARTS
INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL
9.0
4.5
2.3
1.2
CURRENT (A pk)
CLIP
CH B
CH A
36
28
20
12
AGC (dB)
ERROR
QUICK
MAIN
STATUS
2.1 Current
Current =-52.0dB
MENU
MULTILOOP DRIVER
D SERIES
NETWORKED DUAL 14A DSP
Induction Loop Driver
~ 230V 45 - 65Hz
Power: 85W Fuse: T 3.15A L
Designed and Engineered in the UK
D14-2
LOOP O/P CONNECTIONS
1-
2-
1+
2+
www.ampetronic.co
CHANNEL A
LOOP OUTPUT 0.1A
+12V
DC OUTPUT
Serial No.
CHANNEL B
LOOP OUTPUT USB
(UPDATE ONLY) ETHERNET SLAVE IN SLAVE OUT
AC POWER INPUT
INPUT 2
MIC / LINE / AES
INPUT 1
MIC / LINE
Box Contents
• 1 x T14-1 Driver
• T14-1 Quick Start guide
Applicable versions
• T14-1LH
• T14-1LW
• T14-1UH
• T14-1UW including the T14-1V VOIP audio
option
Related Documents
• T14-1 2D Drawing (BC1A210 / BC1A410)
• T14-1 Protocol Guide (UP1A205)
• Testing Hearing Loops on Rail Vehicles
(UP1A208)
• T14-1 Connector Pin-outs (UP5A201)
• T Series Drilling Template (UP4A201)
• T14-1LW 2D & Isometric Drawing (BE1A201)
• T14-1LW 3D STEP model (BE0A201)
• T14-1UH 2D & Isometric Drawing (BE1A601)
• T14-1UH 3D STEP model (BE0A601)
This symbol is used to alert the user to important
operating or maintenance instructions.
The Lightning bolt triangle is used to alert the user
to the risk of electric shock or essential electrical safety instructions.
1. SAFETY
1. It is important to read these instructions, and to follow them.
2. Cleanonlywithadrycloth.Cleaninguidsmayaecttheequipment.
3. Install in accordance with the manufacturer’s instructions.
4. Donotinstallthisequipmentnearanyheatsourcessuchasradiators,heatingventsorother
apparatusthatproducessignicantheatandmaycausetheratedoperatingtemperaturetobe
exceeded.
5. WARNING – THIS APPARATUS MUST BE EARTHED / GROUNDED USING THE M6 STUD
ON THE FRONT PANEL.
6. Referallservicingtoqualiedpersonnel.Servicingisrequiredwhentheapparatushasbeen
damagedinanyway,suchasapowersupplycordorplugisdamaged,liquidhasbeenspilledor
objectshavefallenintotheapparatus,theapparatushasbeenexposedtoanyrainormoisture,
doesnotoperatenormallyorhasbeendropped.
7. WARNING–Toreducetheriskofreorelectricshock,donotexposethisapparatustorainor
moisture.Theapparatusshallnotbeexposedtodrippingorsplashingandnoobjectslledwith
liquidsshallbeplacedontheapparatus.
8. WARNING - Connection to a 70V/100V line speaker system may involve the risk of electric shock
andthereforemustbecarriedoutbyaninstructedorskilledperson.
Tools and Equipment
Smallhandtoolsincludingawirestripper,smallatbladeandpoziscrewdriverswillberequired.
Amagneticeldstrengthmeter,LoopworksMeasureApp&R1Reciever,oratminimumaninductionloop
receiver is vital to check that the loop system is providing the desired level of performance.
FurtherinformationcanbeobtainedfromtheAmpetronicwebsiteorbycontactingAmpetronicSupport.
Ampetronic T14-1 Installation Handbook & User GuidePage 4
2. INTRODUCTION
TheT14-1hearingloopdriverrangehasbeendesignedashighqualitydigital,networkablesingle
loopoutputdrivers.Therangeincludesmodelsintendedforuseinrailorbusapplications.
Dependingonanumberoffactorsregardingtheinstallationoftheloopandtheset-upofthe
driver,theT14-1rangecanprovidecompliancewithIEC60118-4forappropriatelyspeciedloop
installations.
CompliancetorelevantStandards,reducedweightandheatgenerationhavebeenmajorfactorsin
thedesign,combinedwithoptimisedperformanceandthefreedomfromR.F.I.generation.
TheT14-1rangehasaClassDoutputstagewhichoersbetterthan60%increaseinenergy
eciencyoverprevioussolutions.TheproductsfeatureWAGOorHartingconnectorsanduse
remotecontrolandmonitoringviaabrowserbasedcontrolpanelusingstandardnetworkprotocols;
includingHTTP,Telnet,emailandSNMP.
Allunitsfeaturehighpoweroutputsplusamplevoltageheadroom,makingthemsuitableforany
rail,tramorbusapplication.
The T14-1 range also features dual-slope metal loss compensation that caters for a wide range of
metallossfrequencycharacteristics.
3. PHYSICAL INSTALLATION
TheT14-1hasbuilt-inmountingangesoneachside,withtwoM4clearholesoneachange.
Itmaybemountedusingscrewsoronstudswithnutsaccordingtoyourinstallationdesign.
SupportinginformationisavailablefromtheAmpetronicwebsitetoaidinstallationincluding:
• T14-1MountingTemplate(UP4A201)
• MechanicalGeneralArrangement(2D)(BC1A210,BC1A410)
• 3D model in STEP format (BE0A201, BE0A601)
Theunitmaybemountedinanyorientation(sideways,horizontalorinverted)onapanelwith
suitableload-bearingcapability.
Itisrecommendedthattheunitbemountedinsuchawaythat:
• Thereisaccesstothemountingscrewsorstudstoallowittobesecurelymounted
• Anti-vibrationmeasuresareincludedinthemountingmethod(e.g.springwashers,thread
lock)
• There is access to the front panel to allow connection/disconnection in case of maintenance
• ThefrontpanelLEDscanbeviewed,andaUSBmemorydevicecanbeinsertedand
removed from the USB port
• IfnotonapermanentEthernetnetwork,anEthernetcablecanbetemporarilyconnectedto
theM12Ethernetconnectorforcongurationanddiagnosticsifneeded
Mountingaccessoriesareavailableifrequired.Theseincludemountingtraysfor19”and300mm
racksystems.Othersuitableandsecuremountingbracketscanbeusedtosuityourinstallation
environment.
Ampetronic T14-1 Installation Handbook & User Guide Page 5
4. ELECTRICAL INSTALLATION
Safety Earth Reference forelectricalsafetyground.ALWAYSconnecttheM6earthstudto
thevehiclechassisorearthreferenceusingasuitablereliableconnectionmethod.Thisis
requiredforsafetyandEMCcompliance.
Note:intheHartingPowerandLoopconnectors,the‘earth’pinprovidedaspartoftheshellisnot
connected.UsetheM6EarthStudforelectricalsafetyearthconnection.
Power: Depending on the version of the product, use the appropriate
twopins:
• 24Vto36VDC(T14-1LW,T14-1LH):use“0V”and“+V(LO)”
• 72Vto110VDC(T14-1UW,T14-UH):use“0V”and“+V(HI)”
Onlytherelevant+Vpowerpinisconnectedineachunitversion–ifthe
other+Vpinisinadvertentlyconnected,nodamagewillbecausedbut
theunitwillnotbepowered.
IncludeMCBovercurrentprotectioninthesupplycircuitwithminimum
ratings as shown in section 12 of this document
Loop Output: Connect the two ends of the loop to the two pins of the
connector.
Audio Inputs: Twobalanced,transformerisolatedaudio
inputsareavailable.Eachaudioinputmaybeconnectedto
a choice of source signal levels, depending on the
application.
Connect each audio input source to 0V and one of 3V, 30V
or100Vline(NBthisisthe‘peak’leveloftheconnection).
Do not connect to more than one input level in each input.
Theinputsare‘highimpedance’relativetoatypicalspeakerloadimpedanceateachsignallevel.
ThismeansthattheT14-1willnotaddadditionalloadtothesignalsource(e.g.PAamplier).
Wherepossible,donotrouteaudioinputandloopoutputcablesclosetogetherandparallel.Itis
possiblethatsystemstabilitywouldbereduced.
Enable Inputs: Eachinputcanberemotelyenabledby5V
to24VDCconnectedbetweentherelevantenableinputand
enable‘common’.Thisfunctionalitycanbeenabled/disabledin
thewebbrowsercontrolinterface.
*See T14-1 Connector Pin-outs document for more detailed wiring
information.
Input 1 Input 2
Con 1 Pin Description
1 NC
2 NC
3 Low V
(24V to 36V DC)
4 GND
5 High V
(72V to 110V DC)
Con 2 Pin Description
1 Loop +
2 Loop -
3 NC
4 NC
5 NC
Con 3 Pin Description Con 3 Pin Description
1 Input 2, 100V 12 NC
2 Input 1, 100V 13 NC
3 NC 14 NC
4 Input 2, 30V 15 NC
5 Input 1, 30V 16 NC
6 NC 17 Input 1, enable
7 Input 2, 0V 18 Input 2, enable
8 Input 2, 3V 19 Enable GND
9 NC 20 Status contact
10 Input 1, 3V 21 Status contact
11 Input 1, 0V
T14-1 Harting connector pin-outs
T14-1LH, T14-1UH
Industrial Ethernet
M12 4 pin D coded
(female on chassis,
male on cable).
View: Wiring face of
cable mount connector
Issue no UP5A201-1 / DOI: 15NOV2019
Connector components
Harting
Part Number Description
09120213101 HAN 21W insert, female
09120053001 HAN 5-way insert male
09120053101 HAN 5-way insert female
09670008476 Pins, 0.5mm² female (signal)
09330006202 Pins, 2.5mm² female (power)
09330006102 Pins, 2.5mm² male (loop)
19200030430 HAN 3A hood/backshell
09200009995 Housing screw
Generic M25 Cable bush
USB A Socket
(for memory
devices only)
5 way
female
insert
5 way
male
insert
21 way
female
insert
Con 1 Pin Description
1 NC
2 NC
3 Low V
(24V to 36V DC)
4 GND
5 High V
(72V to 110V DC)
Con 2 Pin Description
1 Loop +
2 Loop -
3 NC
4 NC
5 NC
Con 3 Pin Description Con 3 Pin Description
1 Input 2, 100V 12 NC
2 Input 1, 100V 13 NC
3 NC 14 NC
4 Input 2, 30V 15 NC
5 Input 1, 30V 16 NC
6 NC 17 Input 1, enable
7 Input 2, 0V 18 Input 2, enable
8 Input 2, 3V 19 Enable GND
9 NC 20 Status contact
10 Input 1, 3V 21 Status contact
11 Input 1, 0V
T14-1 Harting connector pin-outs
T14-1LH, T14-1UH
Industrial Ethernet
M12 4 pin D coded
(female on chassis,
male on cable).
View: Wiring face of
cable mount connector
Issue no UP5A201-1 / DOI: 15NOV2019
Connector components
Harting
Part Number Description
09120213101 HAN 21W insert, female
09120053001 HAN 5-way insert male
09120053101 HAN 5-way insert female
09670008476 Pins, 0.5mm² female (signal)
09330006202 Pins, 2.5mm² female (power)
09330006102 Pins, 2.5mm² male (loop)
19200030430 HAN 3A hood/backshell
09200009995 Housing screw
Generic M25 Cable bush
USB A Socket
(for memory
devices only)
5 way
female
insert
5 way
male
insert
21 way
female
insert
Con 1 Pin Description
1 NC
2 NC
3 Low V
(24V to 36V DC)
4 GND
5 High V
(72V to 110V DC)
Con 2 Pin Description
1 Loop +
2 Loop -
3 NC
4 NC
5 NC
Con 3 Pin Description Con 3 Pin Description
1 Input 2, 100V 12 NC
2 Input 1, 100V 13 NC
3 NC 14 NC
4 Input 2, 30V 15 NC
5 Input 1, 30V 16 NC
6 NC 17 Input 1, enable
7 Input 2, 0V 18 Input 2, enable
8 Input 2, 3V 19 Enable GND
9 NC 20 Status contact
10 Input 1, 3V 21 Status contact
11 Input 1, 0V
T14-1 Harting connector pin-outs
T14-1LH, T14-1UH
Industrial Ethernet
M12 4 pin D coded
(female on chassis,
male on cable).
View: Wiring face of
cable mount connector
Issue no UP5A201-1 / DOI: 15NOV2019
Connector components
Harting
Part Number Description
09120213101 HAN 21W insert, female
09120053001 HAN 5-way insert male
09120053101 HAN 5-way insert female
09670008476 Pins, 0.5mm² female (signal)
09330006202 Pins, 2.5mm² female (power)
09330006102 Pins, 2.5mm² male (loop)
19200030430 HAN 3A hood/backshell
09200009995 Housing screw
Generic M25 Cable bush
USB A Socket
(for memory
devices only)
5 way
female
insert
5 way
male
insert
21 way
female
insert
WAGO | Harting*
WAGO | Harting*
WAGO | Harting*
Con 1 Pin Description
1 NC
2 NC
3 Low V
(24V to 36V DC)
4 GND
5 High V
(72V to 110V DC)
Con 2 Pin Description
1 Loop +
2 Loop -
3 NC
4 NC
5 NC
Con 3 Pin Description Con 3 Pin Description
1 Input 2, 100V 12 NC
2 Input 1, 100V 13 NC
3 NC 14 NC
4 Input 2, 30V 15 NC
5 Input 1, 30V 16 NC
6 NC 17 Input 1, enable
7 Input 2, 0V 18 Input 2, enable
8 Input 2, 3V 19 Enable GND
9 NC 20 Status contact
10 Input 1, 3V 21 Status contact
11 Input 1, 0V
T14-1 Harting connector pin-outs
T14-1LH, T14-1UH
Industrial Ethernet
M12 4 pin D coded
(female on chassis,
male on cable).
View: Wiring face of
cable mount connector
Issue no UP5A201-1 / DOI: 15NOV2019
Connector components
Harting
Part Number Description
09120213101 HAN 21W insert, female
09120053001 HAN 5-way insert male
09120053101 HAN 5-way insert female
09670008476 Pins, 0.5mm² female (signal)
09330006202 Pins, 2.5mm² female (power)
09330006102 Pins, 2.5mm² male (loop)
19200030430 HAN 3A hood/backshell
09200009995 Housing screw
Generic M25 Cable bush
USB A Socket
(for memory
devices only)
5 way
female
insert
5 way
male
insert
21 way
female
insert
Ampetronic T14-1 Installation Handbook & User GuidePage 6
Status Output: An isolated relay contact is provided which
canbeconnectedtoamonitoringsystem.Therelaycontacts
are‘NO’:closedwhentheunitisoperatingnormally,andopen
when a fault is detected (including lack of power). The fault
conditionsindicatedbytherelay(andbyothermonitoring
protocols)arecongurableinthewebbrowsercontrol
interface.
Ethernet:TheEthernetinterfaceisa10/100Mbpsauto-sensingconnectiononaM12
D-coded4-pinfemaleconnector,asusedinindustrialEthernetnetworks.M12DtoRJ45
cablesareavailableifrequiredforeldprogrammingwhennotpartofanetwork.
*See T14-1 Connector Pin-outs document for more detailed wiring information
5. LOOP REQUIREMENTS
Thedesignandinstallationofthehearingloopcableinstallationshouldbeundertakenaccordingto
specicdesigninstructionsandadviceprovidedbyAmpetronicforyourparticularproject.
Ingeneral,toachievecorrectoperation,thetotalloopcableandfeedconnectionresistanceshould
bebetween0.1Ωand0.9Ω(atDC).Iftheloopresistanceishigherthanthis,theT14-1willstill
operatebutmaynotdeliverthefullratedloopoutputcurrentintotheloop.Ingeneral,loopand
feedimpedance(at1.6KHz)shouldbelessthanthevoltagecapabilityofthedriverdividedbythe
targetcurrentrequiredtoachieveeldstrength.LoopimpedancesabovethismaycausetheCLIP
indicatortoilluminate.Seetroubleshootingsectionforadviceonhowtocorrectthisandgetyour
system.
Ifthetotalloopandfeedcableresistanceisoutsidetherange0.1Ωto10Ω(atDC),theError
LEDmayilluminateatstartupandtheloopdriveroutputmaybedisabledorde-rated.Loopand
feedimpedance(at1.6KHz)shouldbelessthanthevoltagecapabilityofthedriverdividedbythe
targetcurrentrequiredtoachieveeldstrength.HigherimpedancemaycausetheCLIPindicator
toilluminate.Seetroubleshootingsectionforadviceonhowtocorrectthisandgetyoursystem
working.
TheAmpetronicwebsiteandsupportteamprovidemoredetailsonloopandfeedcables.The
correct design and positioning of the actual loop is vital for satisfactory system performance and to
achieveasystemcompliantwithIEC60118-4(orlocalequivalent).IfindoubtconsultAmpetronic
for advice.
6. OPERATIONS
Factory Settings: Unlessaspecicclientcongurationhasbeenagreed,T14-1loopdriversare
suppliedwiththefollowingdefaultsettings:
Current:      -10dBfromfulloutput
MetalLossCompensation(MLC):  MLCo
Input1&2:     “AlwaysOn”,LowCutFilterO,Attenuation:-20.0dB
WAGO | Harting*
Con 1 Pin Description
1 NC
2 NC
3 Low V
(24V to 36V DC)
4 GND
5 High V
(72V to 110V DC)
Con 2 Pin Description
1 Loop +
2 Loop -
3 NC
4 NC
5 NC
Con 3 Pin Description Con 3 Pin Description
1 Input 2, 100V 12 NC
2 Input 1, 100V 13 NC
3 NC 14 NC
4 Input 2, 30V 15 NC
5 Input 1, 30V 16 NC
6 NC 17 Input 1, enable
7 Input 2, 0V 18 Input 2, enable
8 Input 2, 3V 19 Enable GND
9 NC 20 Status contact
10 Input 1, 3V 21 Status contact
11 Input 1, 0V
T14-1 Harting connector pin-outs
T14-1LH, T14-1UH
Industrial Ethernet
M12 4 pin D coded
(female on chassis,
male on cable).
View: Wiring face of
cable mount connector
Issue no UP5A201-1 / DOI: 15NOV2019
Connector components
Harting
Part Number Description
09120213101 HAN 21W insert, female
09120053001 HAN 5-way insert male
09120053101 HAN 5-way insert female
09670008476 Pins, 0.5mm² female (signal)
09330006202 Pins, 2.5mm² female (power)
09330006102 Pins, 2.5mm² male (loop)
19200030430 HAN 3A hood/backshell
09200009995 Housing screw
Generic M25 Cable bush
USB A Socket
(for memory
devices only)
5 way
female
insert
5 way
male
insert
21 way
female
insert
Ampetronic T14-1 Installation Handbook & User Guide Page 7
Input3:      “AlwaysO”,LowCutFilterO,Attenuation:-20.0dB
PowerSavingoptions:    SleepmodeO
DriverName:     Notset
Ethernet:      ParametersSetbyDHCP
Statusreporting/Protocols:   EmailO(noaddressset),SNMPO,TelnetO
TheT14-1drivershaveadjustmentssetindecibels(dB).Asettingof0dBequatestomaximum
current or to maximum input gain. A value of less than 0dB will reduce the current or input gain
accordingly.ThissimpliesadjustingthedriveroutputtomeettheInternationalPerformance
Standard:e.g.Iftheloopmagneticeldstrengthismeasuredtobe2.7dBbelowtherequiredlevel
thenadding2.7dBtotheloopdriveroutputcurrentshouldbringthemagneticeldstrengthtothe
desired level to meet the Standard.
Youcanresetthedrivertodefaultvaluesbyuploadingacongurationlecontainingalldefault
values,e.g.fromaUSBmemorydevice(seebelow).
AfactoryresetcanalsobeperformedviaTelnet(seeUP1A205ProtocolGuide),howeverthiswill
setinputsto-80dBandcurrentto-20dB.Allothersettingswillbeasabove.
Control Interfaces
TheT14-1drivershaveawebbrowserinterfaceavailableviatheEthernetconnection.
CongurationuploadviaUSBisalsoavailable.
BASIC SETUP METHOD
a. As a minimum, connect safety ground, power, loop, and audio input signals (see
  above).Enableandstatusconnectionscanbeusedifdesired.
b. ConnectacomputertotheEthernetport(e.g.usinganM12toRJ45ethernetcable)as
  describedinSection9below.Logonusing‘audioadmin’or‘superadmin’.
c. Browsetothe‘Audio’tabofthewebsite.
d. Enablethe‘combi’testsignalusingthewebsiteinterface.Turnuptheloopoutput
  currentuntilthecorrectmagneticeldstrength(0dBre:400mAm-1)isobtainedinthe
  intendedareaofuse.Measurethemagneticeldstrengthusingamagneticeld
strength meter.
e. Enablethe‘pinknoise’testsignalusingthewebsiteinterface.Usethemagneticeld
strengthmetertomeasurethefrequencyresponseofthemagneticeld.Onthe 
  websiteadjusttheMetalLossControl(usingthedual-slopefeatureifnecessaryto
correctamorecomplexcurve),andrepeatthetestadjustinguntilthefrequency 
  responseis+/-3dBre:the1kHzvalueoverthe100Hzto5kHzrange.
f. Turnothetestsignalsandconnecttheintendedaudioinputsignals.
g. Apply the intended external input audio signal to the unit, and increase the input
  gainsliderforthatinputonthewebsiteuntilthecompressionbargraphshowsabout
6-12 dB compression (and the AGC LED is lit)
Ampetronic T14-1 Installation Handbook & User GuidePage 8
7. BLOCK DIAGRAM



















 














  





























Ampetronic T14-1 Installation Handbook & User Guide Page 9
8. FEATURES OVERVIEW
FRONT PANEL & CONNECTIONS
 M6ChassisGroundStudSafetyground
connection to vehicle chassis
MUST BE CONNECTED
DC Power Input (WAGO and Harting)
 -seeSection4:ElectricalInstallationfor
connection details
Loop Output
 Connectloopbetweenthetwoterminals
 StatusOutputandInputEnable
Status output is an isolated relay contact
 Toremotelyenableaninput,apply+5V
to+24VDCbetweentherelevantinput 
terminal and common.
NB remote control must be enabled in the
web interface before use.
Analogue Audio Input 1 & 2
For each input, connect to 0V(common)
and one of 3V / 30V / 100V, as appropriate
for the signal source.
LED Indications
In startup Normal
operation
STATUS
(red/green)
Flash green: Testing
Fast Flash amber:
Updating software
Green: OK
Flash Green: Sleep
Flash Amber: Standby
Flash red: Error
AGC
(green)
-Green: Signal >6dB
aboveAGCthreshold
CLIP
(red)
-Red: Clipping (output)
CURRENT
(green)
Slow ash:overcurrent Green: Output >-20dB
(asheson/oinnormal
use)
PROTECT
(red)
Slow ash: overcurrent Slow ash: overtemp
Fast ash: power limit
On:bothoftheabove
LOOP O/C
(red)
Fast ash:
Loop low resistance
Slow ash:
Loop open circuit
USB‘A’connectorFirmware/cong 
update from USB memory only
 10/100EthernetM12connector,D-coded
Ethernet status / activity LEDs
Figure1:Frontpanel,WAGOconnectors
① ② ③ ④ ⑤ ⑥ ⑦ ⑧ ⑨
①
②
③
④
⑤
⑥
⑦
⑧
⑨
Ampetronic T14-1 Installation Handbook & User GuidePage 10
9. ETHERNET INTERFACE
TheT14-1familyofproductsarecontrolledthroughanumberofEthernetbasedprotocols.The
normalsetupinterfaceisaccessedthroughabuilt-inwebsite.
TelnetandSNMPprotocolsarealsoavailable.Pleaseseeseparateguidestousetheseprotocols.
Toaccessthebuilt-inwebsite,useasuitablecabletoconnecttheT14-1toanEthernetnetworkor
directlytotheEthernetportofyourcomputer.TypetheT14-1unit’sIPaddress(e.g.192.168.0.25)
intotheaddressbarofyourwebbrowsertoaccessthecongurationwebsite.
Connection with DHCP
TheT14-1issuppliedwithDHCPenabled,andwillbeallocatedanIPaddressbyyourDHCP
server,ifpresent.YouwillneedtondtheT14-1addressusingtheDHCPserveroranetwork
scanning application.
Connectionwithlink-localautoconguration
IfthereisnoDHCPserver,theT14-1supportslink-localautocongurationandwillassignitself
anIPaddressinthe169.254.0.0/16range.Themostcommonuseofthisisadirectconnection
betweenacomputerandtheT14-1,inwhichcasethecomputershouldalsoautomaticallyderive
anIPaddressinthesamesubnet.
InthiscongurationtheT14-1supportsmDNSforeaseofaccesswithoutknowingtheIPaddress.
Enteringhttp://t14-1n.localinawebbrowseraddressbarwillresolvetotheIPaddressofthedriver.
ThemDNShostnameislinkedtothedrivernamesocanbeupdated,forexampleifmultipledrivers
needtobeaccessedonalargerlink-localnetwork,eachonemustbegivenauniquename.
NotethatspacesandperiodsarenotsupportedinmDNS,soshouldbeavoidedinthedrivername
ifusingthisfeature.IfthedrivernamehasbeenchangedandforgottenpleasecontactAmpetronic
for assistance in resetting this.
Accessing the website
T14-1driversfeatureawebinterfacethatcanbeviewedinawebbrowserandisusedtomonitor
andadjusttheloopdriver.
YouwillbeaskedfortheUserNameandPasswordforthedriverasadeterrenttounauthorised
parties.Thesevaluesarecasesensitiveandneedtobeenteredoncepersessiontoaccessthe
driver.
Fourlevelsofaccessareavailable:
User name Access to
(not logged in) Status page only (default on rst connection)
audioadmin Audio settings page & Status page
netadmin Network settings page & Status page
superadmin all settings
For all user names, the default password = ampetronic (all lower case)
Youcanchangethepasswordforeachuserfromthewebinterface.
Superadmin can change all passwords, other users can only change their own password.
Considerationsforexternalnetworkconguration
TheT14-1driverscommunicateusinganumberofnetworkportnumbers.Ifyouwishto
communicate to/from the loop driver across a wider network (e.g. including routers, gateways, etc),
Ampetronic T14-1 Installation Handbook & User Guide Page 11
you may need to ensure these ports are open for communication.
Thewebinterfaceoperatesonthestandardport80.Theemailerrormessageservicesends
throughport587.Port80islikelytoalreadybeopenforoutboundtracbutyournetwork
administratormayneedtoallowinboundconnectionstotheloopdriveronthisport.587maybe
openbutifyouhaveproblemsyoumayneedasktheadministratortoallowoutboundtractothe
internet(theloopdriverwillusethe‘SendGrid’servicetoroutealloutboundemailalerts).Seethe
T14-1 Protocol Guide for more details of ethernet communication protocols.
Web Interface Structure
TheWebinterfaceissplitintothreetabs:AudioSettings,NetworkCongandStatus.Clickingon
thetabheadingwillchangetothecontentsofthattab.
Atthebottomofthescreenaremetersforthelevelofinputaudiocompressionandtheoutput
current.
Information icons are shown alongside section headers, clicking or tapping on these will display a
tooltip to help explain the relevant settings or information. Click or tap anywhere outside the tooltip
todismissit.Thedisplayedvaluesareupdatedonceasecondtoallconnectedusersandwillreect
changesmadebyallusersandprotocols.
Ampetronic T14-1 Installation Handbook & User GuidePage 12
Audio Settings Tab
Input 1, 2 and 3 Settings:
Input State: Canbe‘AlwaysOn‘,‘AlwaysO’or‘Remoteenable’(‘remote’
allowsinputon/ostatetobecontrolledviathefrontpanel 
hardware connections).
Lowcutlter: Canbe‘o’or‘250Hz’.Appliesaltertoremoveinputsignal
 frequenciesbelow250Hz.Thiscanimproveintelligibilityofspeech.
Attenuation (dB): Controls the attenuation of the input 1 channel. Values of 0 to
-80dB in 0.1dB steps are allowed.
Input 2 Priority: Turns on the priority input option, which attenuates other inputs
when signal level on input 2 exceeds AGC threshold.
Ducking Level (dB): Adjuststheattenuationappliedtotheotherinputs,whenpriorityis
active.
Test Signals:
Signal Type: Dropdownboxtoselectthetestsignal–optionsareOFF,Pink
 Noise,‘SineWave’,‘Combi1kHz’,‘Combi1.6kHz’,‘Combi2.5kHz’
 and‘LoopOutputDisabled’.Thelastoptionmutestheloopoutput,
 e.g.toallowbackgroundnoisemeasurementstobemade.
Frequency: Controlsthefrequencyof thecontinuoussinewavetest
signal. Only shown when Sine Wave selected.
Timeout: Controls the time for which test signals remain on. 10, 30, 60 and
 120(default)minutesareavailable.
Current: Controls the output current to the loop. 0 dB is maximum output,
-80 dB is minimum output.
Metal Loss Compensation:
Slope: Correctssystemfrequencyresponsewhenaectedbymetal
structures. Options are OFF, Custom or a slope of 0.25dB/
Octaveto4.00dB/Octave.SeeTechnicalSpecicationsin 
section 15 for further details.
HF Boost: OnlyshownwhenasingleMLCSlopeisselected.Providesa
 presetdual-slopecongurationintendedtobetteroptimise 
frequencyresponseinsystemswithmoresignicanthigh 
 frequencylosses.Inmostcasesusingacustomdualslopewill
 allowabetterfrequencyresponse.
NB: the following items are only shown when “Custom MLC” is selected
Custom LF:  ControlstheslopeoftheLowFrequency(LF)sectionofthe
 customMLC.Valuesmaybebetween0to4dB/octavein0.1dB
steps.
Custom Knee:  ControlsthefrequencywheretheLFcustomslopestopsandthe
HF slope starts.
Ampetronic T14-1 Installation Handbook & User Guide Page 13
Custom HF:  ControlstheslopeoftheHighFrequency(HF)sectionofthe
 customMLC.Valuesmaybebetween0to4dB/octavein0.1dB
steps.
Output Phase
90° Shift: Turnson90degreephaseshifttousemultipledriversina 
 multilooporphasedarrayconguration.LeaveinthedefaultOFF
 positioninmostinstallationsunlessexplicitlyrequiredbysystem
design.
Power Saving Options
Sleep mode: Enablesalowpowerstatewhichisappliedafterauser 
(afternosignal) congurableperiodwithnoaudiosignalsaboveathreshold.
Normal operation resumes on application of an audio signal that
 triggerstheAGC,orbyuserinterventiontoturn‘standby’o.
 OptionsareO(default),10,30or60mins.
Standby: Standbyisalowpowerstate,selectedbyswitchingthecontrol
 to‘On’.Onlychangingthiscontrolto‘O’canreturntheunit
to normal operation. In the low power state, the loop output
 isdisabled.Nocurrentisdeliveredtotheloop,andtheloopdriver
will only draw the Quiescent power.
NetworkCongTab
ThenetworkcongtaballowsyoutoconguretheEthernetandmanagementsettingsofthe
driver.
Ampetronic T14-1 Installation Handbook & User GuidePage 14
EthernetConguration:
MAC Address: MediaAccessControl(MAC)address-auniquenumberthat
 identieseachEthernetconnecteddevice.Thiseldisread
only.
Driver Name: The name of the loop driver reported in the Email reports, on
 thewebpageheading,andinnetworkfunctions.
DHCP Client: DynamicHostCongurationProtocol(DHCP).Whenenabled,
afteritisturnedontheloopdriverwillobtainallnetwork 
 congurationeldsfromtheDHCPserveronthenetwork.
DHCP Option 61: EnablesDHCPOption61.ThistransmitsacongurableDHCP
 Option61ClientIDtotheDHCPserver,whichcanbeusedfor
increased security and/or to allocate the same IP address to a
device role even if the actual unit is replaced.
DHCP Option 61 Client ID: TheclientIDtobetransmittedtotheDHCPserver.Defaultsto
 modelnamepluslast6digitsofMACaddress,editablewhen
 Option61isenabled.Leaveblankthensaveandrestartdriverto
reset to default client ID.
SaveEthernetCong PressthisbuttonifyouhavechangedanyoftheEthernet
and Restart: parameters. It will save any changed settings and restart the driver
 toimplementallpendingcongurationchanges.
NB:thefollowingitemisonlyshownwhenDCHPis“O”
IP Address: The IP address that the driver is currently using. If DHCP is
 enabled,theDHCPsystemwilloverridetheenteredvalue.
Gateway: TheIPaddressoftheGatewayusedforroutingcommunication
outside the local network.
Subnet Mask: TheSubnetMaskwhichdenesthescopeofthelocalIPrange
 tobeused.
Primary DNS: The IP address of the primary domain name server that will resolve
canonical names to IP addresses.
Secondary DNS: The IP address of the secondary domain name server which will
 beusediftheprimaryDNSserverdoesnotrespond.
Status Reporting:
Reporting Email Address: Ifenabledbelow,anemailwillbesenttothisaddress(via 
Sendgrid) whenever an event selected in the reporting options
page occurs.
Email Error Reports: On/Ocontrolforemaileventandregularintervalstatusreporting.
Status report Interval: Anemailreportcanbesentattheselectedinterval–defaultis‘O’
SNMP:  Enablessimplenetworkmanagementprotocol.Onceenabled,
 remoteSMNPmanagerscanconnecttotheloopdriverto
readparametersandcanrequeststatus‘traps’tobesent 
 accordingtotheconguredstatusreportingoptions.Theunitmust
 bemanuallyrestartedtoimplementthechangeafterenablingor
 disablingSNMP.
Ampetronic T14-1 Installation Handbook & User Guide Page 15
NB: The following items are only visible when SNMP is enabled:
SNMP manager list: ShowsallSMNPmanagersthathaverequestedstatus 
 trapsbesenttothem.YoumayaddorremoveSMTPmanagers
 manually.Pressthe‘updatemanagerlist’buttontoimplement
changes. This will restart the unit (and any other pending changes
 willbeapplied)
Status Reporting Options: Link to a separate page where you can choose which status
 reportsaresentviathevariousmethodsavailable.
Voice-over-Internet-Protocol:
VOIP: Controls the Voice-over-Internet-Protocol, which allows standard
SIP/RTP servers to send audio over Ethernet to the loop driver.
 Seebelowformoredetailsofsupportedformats,etc.
Licence Status:  Showswhetheravalidlicenceleisloaded.
Choose Licence File:  Thebrowsebuttonallowsyoutoselectthelecontainingan
 encryptedkey(whichmaybepurchasedformAmpetronic)to
 enableVOIPcommunication.Oncealeisselected,pressthe
 ‘LoadLicenceFile’buttontouploadit.Thelicencestatuswill
 changetoshow‘ValidLicence’onceavalidlicencekeyleis
loaded.
 AVOIPlicencekeymayalsobeloadedfromaUSBmemory
 deviceuponstartup/rebootoftheunit.SeeFirmwareUpdatesand
 Conguration/LicenceUploadbelow.
Control Protocol Selection:
Telnet: EnablesordisablesTelnetprotocol.Theunitmustbe 
restarted to implement this change.
Firmware Upgrades: When connected to a network clicking this control takes you to
 awebpageshowingcurrentlyavailableupgrades.
Saveandrestoreconguration:
Thissectionallowsthecompletecongurationofthedriver(includingpasswords,butnot
includingVOIPlicenceles)tobesavedtoanXMLleonthebrowsingdevice.ThisXMLle
canthenbeloadedintoaT14-1loopdrivertosettheparameterstobeidenticaltheunitfrom
whichthecongurationlewassaved.
Acomplete’default’congurationlecanberequestedfromAmpetronicincaseaunitneeds
restoringtodefaultsettings,e.g.ifEthernetparametershaveinadvertentlybeensetsuchthat
the unit cannot communicate.
AsavedcongurationlemayalsobeloadedfromaUSBmemorydeviceuponstartup/reboot
oftheunit.SeeseparatedocumentfordetailsofhowtousetheUSBportforrmwareupdates,
congurationupload,andVOIPlicenceupload.
Ampetronic T14-1 Installation Handbook & User GuidePage 16
Status reporting options page:
AllowsselectionofreportinglevelsanddeliveryviaEmail,thestatusrelaycontact,orSNMP
protocol.Foreachprotocol,selectthetickboxesfortheeventswhereareportisneededforthat
event.
Notethatsomecriticaleventscannotbedisabledandwillbesentwheneverthatreportingroute
is in use.
Toexitthispagewithoutsavingchanges,pressthe‘back’linkattheTOPofthepage.Tosave
changes and restart the unit,pressthe‘UpdateStatusReporting’buttonattheBOTTOMofthe
page.
Status Tab:
Thestatuscongtab
allows you to see the
status of the driver.
Software version:  Theversionofthebootloader,thermwareinthedriverand
theversionofthewebsite.Inordertoupdatermware, 
please refer to Section 12 and a separate guidance document for
uploading via the USB port.
Ampetronic T14-1 Installation Handbook & User Guide Page 17
Power Mode: Shows the current status of the driver, either Active, Sleep or
 Standby.
Heatsink Temperature: This is the temperature of the driver’s internal heatsink. If it
 exceeds75°Cthedrivercurrentwillbereduced.Ifitexceeds85°C
 thedriverwillbemuted.
Current Amps:  Thecurrentbeingdrawnfromthetransformer.Ifthisexceeds
 themaximumlimitforlongerthanadenedtimethenthedriver
 currentwillbereduced.Theamountofadditionalattenuationwill
 beshowninthederatesection.
Protection Derating: This is the amount of additional attenuation that is added to the
current setting when the transformer is overloaded or the heatsink
is too hot.
Loop Parameters: The measured value of the resistance and inductance of the loop
when the driver was last restarted or switched on.
Uptime: This shows the time since the driver was last restarted or
switched on.
Start Up Tests: This shows if the driver has stopped on a start-up test failure
 (thetestthatfailedwillbedisplayedinred)orifthestart-uptests
all passed (start-up tests completed).
Error(s): Either No Error if the driver is running correctly or a list of the error
 messagesinred.Seechapter10Troubleshootingforacomplete
description of the error codes, what causes them and how to
resolve reported issues.
Ampetronic T14-1 Installation Handbook & User GuidePage 18
10. EMAIL NOTIFICATIONS
ThedrivercanbeconguredtosendEmailstoaspeciedaddressundercertainconditions.
These Emails contain a list of any errors that are present and the settings of the driver at the time
thattheEmailwassent.AsampleEmailisshownbelow:
ThisisanautomaticallygeneratednoticationEmailsenttothecontactaddressconguredbytheinstaller/
administrator of an Ampetronic Loop Driver. Please do not reply to this Email.
YourHearingLoopDrivernamedT14-1withMACaddress30:0A:60:A0:52:F1,haseitherdevelopedafaultorthe
settingshavebeenmodiedwithoutauthorisation.Theamplierrmwareversionisv0.15.Theamplierorloop
mayrequireattention.
Thecongurationpageoftheampliercanbereachedbyclickingthislink:T14-1ifyouareonthesamenetwork
domainastheamplier
ThesystemerrorspresentontheamplierwhenthisEmailwassentarelistedbelow:
------------------------------------
Errors have cleared. No faults at present
------------------------------------
Thecurrentsettingsoftheamplierarelistedbelow:
Input 1 level is -30.0dB
Input 2 level is -80.0dB
Current level is -12.0dB
MLCselectedis0
MLCcustomslope1is1.0dB/Oct
MLCchangefrequency1000Hz
MLCcustomslope2is1.0dB/Oct
ThemeasureloopparametersonchannelAare539mRand190uH
Theamplierhasbeenrunningfor8089millisecondssinceitlastrebooted
End of Email
TheEmailcanbesentwhenthedriverisrestarted,whenanerroroccursorperiodicallytomonitor
thestateoftheloopdriver.Thesesettingsareonlycontrolledthroughthewebinterface–there
is no menu on the front panel that alters these settings. The controls for the Email system can
befoundontheNetworkCongtabofthewebinterface.Seesection9Ethernetinterfaceofthis
manual for further information.
Ampetronic T14-1 Installation Handbook & User Guide Page 19
11. TROUBLESHOOTING
Incaseoferror,thewebsiteStatustabcolourwillchangeanderrormessageswillbedisplayedon
the Status page.
Startup test messages
DIAGNOSTICS IN PROGRESS Thismessageisdisplayedwhilststart-uptestsarebeing
performed. Not an error.
LOOPR<200mRFIXAND
RESTART
Thedrivermeasured<200mΩfortheloopimpedance.
Thisistoolowforthedriverandmustbexedbeforethe
driverwillnishthestart-updiagnostics.Switcho,xthe
fault and switch on again.
LOOP > 10R LOOP COULD CLIP Theloopisnotopencircuitbuthasaresistanceof>10Ω.
This is too high – the output will clip on signal peaks. This is
a warning and the driver will continue to operate.
HEATSINK TOO HOT PLS
SWITCH OFF
The heatsink is at a critical temperature and thermal
protectionhasactivatedatstartup.Switcho,xthefault
and switch on again.
OUT IDLE OVERCURRENT
OUT FUNC TEST HIGH
OVERCURRENT
Error in the internal circuitry of the driver. Please contact
Ampetronic technical support if any of these errors are
seen,quotingtheerrormessagetext.
Error messages during operation
OUTPUT OPEN CIRCUIT This message is displayed if the loop is disconnected whilst
the driver is operating (e.g. if the loop is cut). This is a
critical state and the output will not operate.
LOOP > 10R LOOP COULD CLIP Theloopisnotopencircuitbuthasaresistanceof>10Ω.
(Seenotesaboveforstartuperror)
POWERLIMIT-DERATED Thedriverisoverloadedandthedrivecurrenthasbeen
reduced
POWERLIMIT-SHUTDOWN The driver is seriously overloaded and the loop output has
beenshutdown
TEMPLIMIT-DERATED Theinternalheatsinkishotandthedrivercurrenthasbeen
reduced.
TEMPLIMIT-MUTED Theinternalheatsinkistoohotandtheoutputhasbeen
turnedo.
OUTPUT CLIPPING Thedriveroutputmaximumvoltageisbeingexceededand
theloopsignalisbeingclipped
OUTPUT CLIP - ATTENUATED Thedriveroutputmaximumvoltageisbeingexceededand
theloopsignalisbeingattenuatedtopreventclipping
Ampetronic T14-1 Installation Handbook & User GuidePage 20
Instability or high frequency noise
1. Itispossiblefortheloopcablestobegroundedunderfaultconditions,resultingininstability
whichmaysoundlikehighfrequencynoise,buzzorwhistling.Theresultsofthistypeoffault
areunpredictableandmayappearasanycombinationofthefrontpanelindicationerrors
2. Thisfaultiseasytodetermine.Simplyunplugtheloopcablesfromtheamplierandtestwitha
resistancemeterbetweeneitheroftheloopwiresandagoodearthpoint.Thereshouldbean
innitelyhigh(opencircuit)reading.Anyreadingindicatesafailureoftheloopcableinsulation
andyouwillneedtoeitherrepairorreplacetheloopcable.
3. Instabilitycanbecausedbyusingpoorqualitysignalcables,longunbalanced(2-wire)signal
runstotheinputs(includingelsewhereintheaudiosystem),orbyrunninginputcablesin
closeproximitywiththeloopwireoveranappreciabledistance(>5m).Loopampliersare
capableofdeliveringhighcurrentsataudiofrequencies.Iftheloopcablesareruncloseto
sensitivesignalcablesitmaybepossibletoinduceasignalbackintotheinputoftheamplier
causingfeedback.Cablerunsandloopwiresshouldbekeptwellapartfromeachother.To
avoid interference maintain a separation of at least 300mm.
4. InstabilitycancausethedrivertorunhotandmayresultintheSTATUSLEDashingREDand
thePROTECTLEDashingREDslowly.
Interference
1. Hum, Buzz or tones heard through a loop receiver: Backgroundmagneticeldsor
interferencemaybepresentinanylocationandareunlikelytobecausedbyortransmittedby
theloopsystem.Monitorthiswithaloopreceiver(suchasanILR3).Iftheinterferenceisstill
presentwiththeloopsystemswitchedo,thenyouneedtolocateandeliminatethesourceof
theinterferencebeforeswitchingtheloopsystembackon.
2. Interference to other systems (typically video or audio):Magneticeldscaninduce
currents into any low impedance electrical path or loop. Audio or video systems with multiple
earths may experience pick up of the loop signal. Check entire sound system for evidence of
loopsignal(mostobviouswithatestsignal),andtracesourceofpickup.
3. Jagged lines or “hum bars” on a video picture: Under certain circumstances, the loop
signalmayappearasinterferenceinavideosignal.Thiscouldbeduetorunningunbalanced
analoguevideocablesincloseproximitytotheloopcable,oranearthloopinthevideo
system.Separatetheloopcablesfromthevideocablesorresolvetheearthlooptoreducethe
eect.
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Ampetronic T14-1Rail User guide

Ampetronic
Brand
Ampetronic
Model
T14-1Rail
Category
Musical Equipment
Type
User guide
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