Integrity Voice Alarm Routing Matrix
FMIC Manual
Page 1 of 8 DocNo.DCP0002986 ADS 11/12/05 rev0
IMPORTANT
THIS SECTION MUST BE READ PRIOR TO THE INSTALLATION / MAINTENANCE OF THIS PRODUCT
This equipment must only be installed and maintained by a suitably skilled and technically competent
person.
No responsibility can be accepted by the manufacturer or distributors of this product for any
misinterpretation of an instruction or guidance note or for the compliance of the system as a whole.
Voice alarm system design is beyond the scope of this document. An understanding of system
components and their use is assumed.
Errors and omissions excepted. The manufacturer’s policy is one of continuous improvement and we
reserve the right to alter product specifications at our discretion and without prior notice.
FMIC Overview
The FMIC comprises a wall-mounted red steel case with a glazed door that contains a close-talking
noise-cancelling fist microphone plus ancillary electronics.
It is designed to be used with SigNET’s Integrity voice alarm system and is fully monitored for faults. The
internal electronics comprise two parts, a 1ZPR pre-amplifier and monitoring unit and an FMX fault
monitoring expansion and message control unit.
Up to four FMICs may be connected in a daisy-chain format to one voice alarm input.
When used with the Integrity VA system, it is connected to a one 1LS card and, in most applications, is
required to operate as an all-call microphone, even in case of microprocessor failure. In this case, the
1LS card must be installed in slot 1 of the Integrity mainframe.
The microphone is designed for use in noisy environments and incorporates a lip-guide to help the user
position the microphone close, but not too close, to his mouth.
The FMIC is normally connected to the mainframe via two four-core 1.5mm
2
`fire-rated cables although in
non-life-safety applications, Cat 5 cable may be used.
The front door is normally secured by a cam lock and key, but a ‘T-bar’ handle may be specified if
required.
Integrity Voice Alarm Routing Matrix
FMIC Manual
Page 2 of 8 DocNo.DCP0002986 ADS 11/12/05 rev0
1ZPR Overview
The 1ZPR has an OK indicator to show that power is connected and there are no local faults. If a fault is
detected with the microphone or 1ZPR the OK light goes out and the FAULT light illuminates.
It also has a speak button which incorporates a Busy indicator/VU level meter.
The audio section features a compressor to cope with varying speech levels, a noise-gate to reduce
background noise, three-band equalization and a selectable chime module (0, 1, 2 or 3 chimes).
In order to page, the microphone’s PTT thumb switch or the 1ZPR’s speak button is pressed and,
provided the system is not busy at a higher priority (shown by the Speak bar flashing solid green), the
speak bar will light solid green and the announcement can be made. The VU meter follows the chime
sound and the operator should not speak until it has finished.
If the system is busy at an equal or higher priority pressing the PTT will have no effect.
FMX Overview
The FMX has a Power indicator that is lit when power is connected and a Fail indicator that lights if the
FMX or 1ZPR detects a fault.
The FMX’s controls and indicators work as follows when connected to a correctly configured Integrity VA
system:
Press the Message 1 “PLAY” button and the associated LED lights briefly. The message (normally
“Evacuate”) plays once and will stop when it reaches the end.
The message 2 controls and indicators are the same except that a “Test” message is normally
controlled.
Technical description
Speech is picked up by the microphone and the signals are passed to a voltage controlled amplifier
under control of a signal derived from rectifying the stage output signals, providing a 3:1 compression
ratio.
The output of this stage is fed to an LED output level display and a three-band equalizer (100 Hz, 1 kHz
and 10 kHz).
The audio line is monitored for faults by means of a 15 V phantom voltage that is injected from the 1LS
card.
Fault Monitoring
The electret microphone capsule is monitored for impedance and current absorption. Any deviation
outside a pre-set window is detected as a fault which turns off the OK LED and lights the Fault LED. At
the same time, the monitor circuit disconnects a 6k8 end of line resistor in the PTT circuit, causing the
PTT line voltage to rise. This is detected as a fault by the 1LS card.
Cables
The FMIC is designed to use two four-core fire-rated cables that enter the case via two 20 mm knock-
outs in the top or bottom of the case. In non life-safety applications, Cat 5 cable can be used instead. Up
to four FMICs can be daisy-chained on up to 1000 metres if cable (fire rated or Cat 5).
Integrity Voice Alarm Routing Matrix
FMIC Manual
Page 3 of 8 DocNo.DCP0002986 ADS 11/12/05 rev0
Installation
Open the door and remove the eight screws holding the back plate. If only two screws are fitted, the
other screws will be provided in a plastic bag.
Unplug the Cat 5 lead from the terminal block, remove the back plate and keep it safe.
The FMIC should be located in an area that will be as quiet as possible in an emergency.
Fix the box to the wall, normally between 1.2 and 1.4 metres from the final floor position using suitable
fasteners.
In the UK, standard or enhanced fire-rated cables (BS 5839-1 2002) should be used.
FMX
1ZPR
Eight back
plate screws
VU meter
unplug
Terminal block
DIP
it h
Mounting holes
20 mm knockouts
Mic holder
Integrity Voice Alarm Routing Matrix
FMIC Manual
Page 4 of 8 DocNo.DCP0002986 ADS 11/12/05 rev0
Remove the 20 mm knock-outs, fill any unused holes with a suitable metal blank. Install the cables and
fit cable glands. Strip and connect the cables to the terminal block as shown below. If you are fitting
more than one FMIC, joint the cables in a separate connection block and then use connect to the FMIC
using short tails.
FMIC Connections
+24 V
0 V
PTT
Bus
y
Switch 1
Switch 2
A
udio +
A
udio -
+24 V
0 V
PTT
Bus
y
Switch 1
Switch 2
A
udio +
A
udio -
FMIC #1
FMIC #2
FMIC #3
FMIC #4
1
2
3
4
OFF ON OFF ON OFF ON
Mic
control
SW1
control
SW2
control
= ON
FMX switch settings
One FMIC fitted
Two FMICs fitted
Three FMICs fitted
Four FMICs fitted
These switch settings are IDENTICAL in
each FMIC that is connected
Integrity Voice Alarm Routing Matrix
FMIC Manual
Page 5 of 8 DocNo.DCP0002986 ADS 11/12/05 rev0
Second Fix
Connect the cables at both ends – DO NOT plug the CAT5 lead back into the FMX board yet.
With the rack powered up, check the voltages on the FMIC terminals.
0 to 24 Volts = 31.8 V DC
0 to PTT 24 V DC
0 to Busy 0
0 to Audio + 14.7 V DC
0 to Audio - 14.7 V DC
The polarity of audio + and audio – is unimportant
0 to SW1 24 V DC
0 to SW2 24 V DC
If cables are OK, plug the cat 5 lead into the FMX and test the microphone and chimes. Adjust the tone,
chime level and master levels as necessary.
Refit the back plate and close the door.
Check that the FMX POWER light is lit and the FAIL light is off.
Check that the 1ZPR POWER light is lit and the FAULT light is off.
Finally, test the MIC PTT switch and the message play controls.
Locks
All FMICs are provided with the same key (to pass).
A ‘T-Bar’ option is available at extra cost, however, this is not recommended for public places.
Consider keeping the key in a “break glass” box adjacent to the FMIC.
Connecting to Integrity
For information on installing Integrity cards in an Integrity Mainframe, see the Integrity Voice Alarm
Routing Matrix manual, document number DCS0003214.
Configuration
For information on configuring Integrity cards see the Integrity Editor User Guide, document number
DCM0003212.
Integrity Voice Alarm Routing Matrix
FMIC Manual
Page 6 of 8 DocNo.DCP0002986 ADS 11/12/05 rev0
Internal adjustments
Chime selection (1)
The unit can be set so that a chime is transmitted when the PTT switch is first operated, Move the links
as shown below.
Mic Monitor (2)
This link should be set in the “enable” position so that the fist mic fault monitoring is operational.
The Equalization (Tone) controls (3)
Bass (100 Hz), Mid (1 kHz) and Treble (10 kHz) tone controls with ±12 dB of adjustment are provided.
They can be used to improve intelligibility and reduce the effects of feedback.
Start by setting the bass and treble to minimum (fully anti-clockwise) and the mid control at maximum.
Then adjust to get the best results.
Master and Chime levels (4)
Adjust the chime control to balance it against the speech level.
Adjust he master level control to set up the overall output level.
No chime 1 note chime
2 note chime
3 note chime
Integrity Voice Alarm Routing Matrix
FMIC Manual
Page 7 of 8 DocNo.DCP0002986 ADS 11/12/05 rev0
Specifications
Dimensions: 350 mm h x 200 mm w x 100 mm d
Weight: 3.5 kilogram
Supply voltage 20 – 32 Vd.c. (from 1LS card)
Current consumption: 50 mA
Case colour – red (RAL 3000)
1ZPR
Internal indicators – none
Internal controls – master level (sets the overall output level), chime level (sets chime level relative to
master level); equalization, 100 Hz ± 12 dB, 1 kHz ± 12 dB, 10 kHz ± 12 dB; chime select, 0, 1, 2 or 3
chimes;
External indicators – OK (lit when power is applied and there are no faults with the 1ZPR or its
associated microphone); FAULT (lit when a fault is detected in the 1ZPR or its associated microphone);
Combined VU/BUSY indicator (Lights solid green to say that another mic on the same line is busy. LEDs
follow the sound picked up by the microphone)
External controls Push to Talk button (SPEAK)
EQ filters 100 Hz ±12 dB, 1 kHz ±12 dB, 10 kHz ±12 dB
Compression ratio 3 : 1
Noise gate threshold – 30 dB
Master and chime levels -
∞ to ±4 dB
Output level Line level (0dB = 775 mV)
FMX
Internal indicators – none
Internal controls – three 4 way DIP switch adjusted to suit number of connected FMICs
External indicators – POWER – lights when power is applied; FAIL – lights when a fault is detected in
the FMX board; Message 1 PLAY, Message 2 PLAY – light to show that the message(s) are selected to
play.
External controls
Push buttons to select Message 1 and 2 PLAY.
Integrity Voice Alarm Routing Matrix
FMIC Manual
Page 8 of 8 DocNo.DCP0002986 ADS 11/12/05 rev0
Microphone
The microphone is a noise-cancelling dynamic microphone designed for close-talking, hand-held
applications in quality sound installations where background noise is a problem. The frequency
response, especially tailored for voice communications, provides a crisp, clear, highly intelligible sound
with 360 degrees minimization of background noise. A soft lip guard is positioned to assure proper close
talk voice spacing by the operator. It offers extreme reliability, convenient handling, rugged construction
and high performance for years of dependable service. The dynamic cartridge has a rugged polyester
diaphragm which resists moisture, temperature extremes, most acids, alkalis and solvents. Molded in
high impact Cycolac, it comes with a permanently attached, heavy duty, four-conductor, two shielded,
coil cord and a simple to operate DPDT long life, trouble free switch. It has a low-impedance output and
is factory wired normally open.
Element: Dynamic noise cancelling
Frequency Response: 100 to 5000 Hz
Output Level: -58 dB (0 dB = 1mw / 10 microbars); -80 dB (0 dB = 1 volt / microbar); 1.0 mV/PA
Impedance: 200 ohms, matches 50 to 1000 ohms
Cable: Four conductor, two shielded, permanently attached, heavy duty, coil cord that extends to 1.8m
Switch: Operated by press-to-talk lever, DPDT long life, trouble free switch with spring return, has
smooth feel.
Housing: Durable moulded black Cycolac
Dimensions: 100mm (3-15/16") high x 75.4mm (2-3/32) wide x 66.7mm (2-5/8") deep
Weight: 284 grams
SigNET AC Limited
6 Tower Road,
Glover Estate,
Washington,
Tyne & Wear,
NE37 2SH.
Tel: 0191 417 4551
Fax: 0191 417 0634
+10
0
-10
50 100 200 500 1K 2k 5k 10k 20k
Response in dB
Frequency in hertz
-
1
-
2
-
3
-
4
-
5
-
6
-
7
-
8
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