Ericsson MASTR IIe Maintenance Manual
- Category
- Two-way radios
- Type
- Maintenance Manual
Ericsson MASTR IIe is a mobile communications utility handset that provides simple programming and diagnostic functions to aid the service technician when servicing the equipment. It offers the following capabilities:
- Local Microphone and Speaker: Allows for local communication and intercom functionality.
- Adjustment of Digital Potentiometers: Enables precise control of audio input and output levels.
- Station Metering: Provides real-time monitoring of various station parameters.
- Channel Selection: Facilitates quick and easy selection of desired channels.
- Function Enable/Disable: Allows for customization of station functions, such as repeat disable, CG encode/decode disable, and scan enable/disable.
Ericsson MASTR IIe is a mobile communications utility handset that provides simple programming and diagnostic functions to aid the service technician when servicing the equipment. It offers the following capabilities:
- Local Microphone and Speaker: Allows for local communication and intercom functionality.
- Adjustment of Digital Potentiometers: Enables precise control of audio input and output levels.
- Station Metering: Provides real-time monitoring of various station parameters.
- Channel Selection: Facilitates quick and easy selection of desired channels.
- Function Enable/Disable: Allows for customization of station functions, such as repeat disable, CG encode/decode disable, and scan enable/disable.
LBI-38599E
Mobile Communications
MASTR
®
IIe
UTILITY HANDSET
Maintenance Manual
TABLE OF CONTENTS
Page
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Control Shelf . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Auxiliary Backplane (MASTR IIe) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Utility Handset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Power On . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Operating Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
System Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Function Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Potentiometer Adjust Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Metering Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Channel Select Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Remote Station Adjustments Via Modem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
APPENDIX A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
Copyright © March 1991, Ericsson GE Mobile Communications, Inc.
SPECIFICATIONS
POWER SUPPLY
Nominal 12.5 Vdc
Range 10 to 16 Vdc
No failure or lack of function within this range.
CURRENT DRAIN
On (rated Audio) 100 mA
OPERATING TEMPERATURE RANGE
Nominal 24
o
C
Operating Range -30
o
C to +60
o
C
Vcc VOLTAGE
At 25
o
C 5.0 Vdc to 5.4 Vdc, typical
At 30
o
C 5.5 Vdc to 5.9 Vdc, typical
At 70
o
C 5.0 Vdc to 4.6 Vdc, typic
LBI-38599
2
INTRODUCTION
The MASTR III/MASTR IIe Utility Handset
19A705965P1 or 19A705870P2 and handset cable
19D901619P2 are used to provide simple programming and
diagnostic functions to aid the service technician when servic-
ing the equipment.
This manual may be used with all versions of software. For
equipment using group 1 through 5 software, refer to Appendix
1 in the back of this manual. For MASTR III and MASTR IIe
with group 6 or later software, continue on in this section.
DESCRIPTION
In MASTR IIe applications the auxillary backplane
(B3MB1B) contains the handset interface circuitry and the
handset connector. The backplane allows the service techni-
cian to do some programming and to perform various diagnos-
tic functions using the Utility Handset. In MASTR III appli-
cations, all interface circuitry is housed in the Transmitter/Re-
ceiver shelf. The handset provides the following functions:
• Local Microphone and Speaker
• Adjustment of Digital Potentiometers
• Station Metering
• Channel Selection
• Function Enable/Disable
CONTROL SHELF (MASTR IIe)
The Control Shelf hardware includes a EEPROM contain-
ing the operating characteristics (or personality) of the Control
Shelf. The contents of the EEPROM can be changed only with
the use of the Utility Handset or with a personal computer.
All audio input and output levels for the Control Shelf are
controlled by electronic potentiometers. These potentiometers
must be adjusted by the Utility Handset or by a personal
computer. There are
NO
manual adjustments on the Control
Shelf!
A complete description of the Control Shelf EEPROM
personality settings is contained in the programming software,
TQ3353. A complete listing of all lines and signals as well as
a discussion of Level Adjustments is contained in Control
Shelf Maintenance Manual, LBI 38430.
AUXILIARY BACKPLANE (MASTR IIe)
The Auxiliary Backplane plugs into the standard MASTR
IIe Backplane through a 96-pin DIN connector (see Figure 1).
The backplane contains the necessary hardware to convert TTL
levels of the handset to RS232 data understood by the MASTR
IIe Control Module.
A mounting bracket and TORX® T15 screws secure the
Auxiliary Backplane to the station frame. The Utility Handset
cable connects to the RJ45 jack (J2) on the Auxiliary Back-
plane board.
Figure 1 - Backplane and Auxiliary Backplane Boards
LBI-38599
3
UTILITY HANDSET
In MASTR IIe applications, the Utility Handset Cable
plugs into the RJ45 jack (J2) on the Auxiliary Backplane board.
In MASTR III applications, the Utility Handset Cable
plugs into the MIC jack located in the upper right hand corner
of the Transmitter/Receiver shelf. See Figure 2.
OPERATION
POWER ON
While pressing either VOLUME button on the side of the
handset, toggle the RESET switch on the front of the MASTR
IIe Power Module. This tells the Control Module there is a
handset present.
Successful power-up will cause the display to show:
On the initial handset power-up the invalid key flag may
appear in the display. It should be disregarded. Pressing any
key will cause it to disappear.
The handset will not operate if there is a PC connected
to the DB9 serial port of the MASTR IIe backplane or
to the MASTR III T/R shelf.
NOTE
Figure 2 - MASTR III Control Shelf
MENU
LBI-38599
4
OPERATING FUNCTIONS
The handset operating functions are shown in Figure 3.
These functions are in addition to the operating characteristics
listed below:
Local Push-to-Talk is a toggled (press On-press Off) func-
tion. When active, the handset’s microphone may be used
and the "IN USE" flag on the display will be illuminated.
Also the Tx LED on the System Module will light if Tx is
active.
END Button always returns the handset to the top MENU
display.
CLR Button always moves the handset back one level.
Volume Keys may be held continuously to change any
potentiometer setting.
Handset Speaker is active and may be used as an intercom
speaker.
Scan Active Indicator will light the ROAM light on the
display when Scan is active.
SYSTEM FUNCTIONS
The Utility Handset may be used to toggle special func-
tions in the station (see Figure 4).
To enter the Function Select Mode from the main menu,
press the FNC key. While in the various Function Modes
(select/display), the handset will show FCN on the display.
To clear an unwanted entry in the Function Select Mode,
press CLR. Pressing CLR a second time will return the
handset to "MENU" display.
If an invalid function number is entered and either START
or STOP is pressed, the handset will display the INVALID key
flag.
To make another selection from the Function Display
Mode, press the CLR key. The handset will return to the
Function Select Mode and display "F SEL".
Figure 3 - Handset Operations
MASTR IIe - Make sure the RF equipment has been
properly aligned before making ANY adjustments to
the control shelf.
NOTE
LBI-38599
5
The state of the control shelf after starting or stopping
functions is dependent upon the function in question and
external control shelf signals (e.g., keying/unkeying a local
mic). Refer to the Function Description section for specific
details.
Select a specific function as listed in Figure 5 and enter the
corresponding number. Then press the "A" key to start (acti-
vate) the function.
To stop the selected function, press the "C" key.
To reset the station’s programmed personality defaults,
toggle the RESET switch located on the front of the Power
Module.
FUNCTION DESCRIPTIONS
(See Figure 5)
Repeat Disable
Start: Disable the repeater function.
Stop: Restore the original EEPROM setting.
Tx Disable
Start: Disable the transmitter.
Stop: Restore the original EEPROM setting.
Function Key Display
Power up
handset
None
Enter function
select mode
Input desired
function; e.g. 7
for CGD Enable
To start function
To stop function
To return to
function
select mode
F SEL 7
MENU
START 7
F SEL
F SEL
STOP 7
CLR
PRS
7
C
A
FNC
Figure 4 - System Functions
If the function was programmed to be active, starting it
will have no effect.
NOTE
In some functions, the stop key will actually reset the
station to its originally programmed state rather than
stop the selected function. Consult the detailed expla-
nations of the function to determine its actual opera-
tion. END will return the handset to the top menu, and
like the CLR function, will leave the station in the
condition set by the different function commands.
NOTE
NUMBER FUNCTION
30 Repeat Disable
32 Tx Disable
34 CG Encode Disable
36 CG Decode Disable
37 RUS Mute
38 CG Monitor
39 Remote PTT
40 Local PTT
41 External PTT
42 Morse Code
44 Battery Alarm Disable
45 Test Tone
46 System Reset
47 CCT Disable
48 RUS Disable
49 Scan Enable
50 Scan Disable
58 Main Rx Enable
59 Main Rx Disable
60 Aux Rx Enable
61 Aux Rx Disable
64 Aux Control 1 On
65 Aux Control 1 Off
71 Priority Scan Disable
75 Scan Inhibit
96 Voting Tone Enable/
Voting Tone Disable
Figure 5 - Function Chart
LBI-38599
6
CG Encode Disable
Start: Disable channel guard encode.
Stop: Restore the original EEPROM setting.
CG Decode Disable
Start: Disable channel guard decode.
Stop: Restore the original EEPROM setting.
RUS MUTE
Start: Disable the main receiver.
Stop: Restore the original EEPROM setting.
CG Monitor
Start: Enable the Channel Guard monitor function.
Stop: Restore the original EEPROM setting.
Remote PTT
Start: Key remote push-to-talk.
Stop: Unkey remote push-to-talk.
Local PTT
Start: Key local push-to-talk.
Stop: Unkey local push-to-talk.
External PTT
Start: Key external push-to-talk.
Stop: Unkey external push-to-talk.
Morse Code
Start: Send Morse code ID if one is programmed.
Stop: Disable Morse code ID function.
Comments: If no ID is present, START will have no effect. If
STOP is selected while station is transmitting ID, ID will be
interrupted and terminated.
Battery Alarm Disable
Start: Disable battery Alarm Tone.
Stop: Restore the original EEPROM setting.
Test Tone
Start: Begin sending test tone.
Stop: Stop sending test tone.
Comment: The test tone frequency is 1000 Hertz.
Soft Boot
Start: Toggles software reset.
Stop: No function.
Carrier Control Timer Disable
Start: Disable the carrier control timer.
Stop: Restore the original EEPROM setting.
RUS Disable
Start: Enable Receiver Unsquelched Push to Talk.
Stop: Restore the original EEPROM setting.
Scan Enable
Start: Enable SCAN.
Stop: Restore original EEPROM setting.
Scan Disable
Start: Disable SCAN.
Stop: Restore original EEPROM setting.
Main Rx Enable
Start: Enable the main receiver.
Stop: Restore the original EEPROM setting.
Main Rx Disable
Start: Disable the main receiver.
Stop: Restore the original EEPROM setting.
Aux Rx Enable
Start: Enable the auxiliary receiver and toggle Aux Rx Mute.
Stop: No function.
Aux Rx Disable
Start: Disable the auxiliary receiver and toggle Aux Rx Mute.
Stop: No function.
Aux Control 1 On
Start: Activate Auxiliary 1 output.
Stop: Restore the original EEPROM setting.
Aux Control 1 Off
Start: Deactivate Auxiliary 1 output.
Stop: Restore the original EEPROM setting.
Priority Scan Disable
Start: Disable Priority SCAN.
Stop: Restore EEPROM setting of Priority SCAN Enable.
LBI-38599
7
Scan Inhibit
Start: Suspend scan operation (if enabled).
Stop: Restore the original EEPROM setting.
Voting Tone Enable
Start: Enable Voting Tone
Stop: Disable Voting Tone
ADJUSTMENTS
POTENTIOMETER ADJUST MODE
The System Module contains up to 13 digital potentiome-
ters (10 in MASTR IIe applications) to set various operational
levels. These potentiometers must be adjusted properly to
ensure optimum station performance. The potentiometers,
their key, and function are listed on one of three pot pages. The
pages and associated potentiometers are listed below. Page 3
applies to MASTR III only. The adjustment range for each
potentiometer is given in Table 1.
Page 1.
1. Line Output Level (P LO)
2. Transmit Level (P TX)
3. Line Input Level (P LI)
4. Channel Guard Level (P CG)
5. DSP Line Cancellation Level (P DC)
6. DSP Line Input Level (P DI)
7. Compressor Level (CP)
Page 2.
1. Voting Tone Gain (VTG)
2. Compressor Threshold (CT)
3. Morse ID Transmit (MCTX)
Page 3.
1. PA Power (PA)
2. Repeater Gain (RG)
3. Squelch Pot (SQ)
Table 1 - Potentiometer Adjustment Range
PAGE ADJUSTMENT KEY* RANGE
1. P LO
P TX
P LI
P CG
P-DC
P-DI
1 0-255
2 0-255
3 0-255
4 0-255
5 0-255
6 0-255
2. VTG
CT
MCTX
1 0-127
2 0-32767
4 0-255
3. PA
RG
SQ
1 0-99
2 0-32767
3 0-99
* On each Pot Page the unused key numbers will have
no effect.
To enter the Adjust Potentiometer Mode from the main
menu, press the "A" key. The handset will display "POT
P1"for page 1. To select additional pages, press the "A" key
again while "POT P1" is still displayed. Toggle it again to
select page 3.
Select a specific potentiometer by selecting the appropriate
page and then pressing the corresponding number key shown
in Figure 6.
Ramping switches for these adjustments are shown in
Figure 7.
Note: the "0" key is applicable
only to the CP, CT and RG
potentiometers (key 7 pg 1, and keys 1,2 pg 2and with MASTR
III key 2 pg 3.), and is a toggled (Press On-Press Off) function.
It is not necessary to back up 1 level to the POT P1 display
to select another pot on the same page. Just press the
desired number corresponding to the next pot to be
adjusted. To select a pot from another page, press CLR
to return to Pot Px display and toggle the "A" key to the
desired page. Now, press the desired number key shown
in Figure 6.
Subsequent pressing of the "A" key will display the last
selected page. Pressing the "CLR" key while in the
process of actually adjusting a pot will return to the "POT
Px" display where "x" was the last page selected.
NOTES
LBI-38599
8
The handset adjusts potentiometers in real time. These
adjustments are recorded in the personality of the System
Module.
Service Notes:
1. Potentiometers 5, 6 and 7 (page 1.), 1, 2 and 3 (page 2)
and 1 and 2 (page 3.) apply to System Modules with the Digital
Signal Processing (DSP) board.
2.The Channel Guard Level, TX, and PA pots are channel
specific. To correctly set the level associated with a channel,
first select a channel using the Channel Select Mode described
on this page. Then return to the Adjust Potentiometer Mode
and adjust the Channel Guard level pot. (Only applicable to
multiple frequency stations.)
3. Also, changing the SQ Pot will have an affect only on
those ststions that have been programmed to use the digital
squelch pot instead of the manual pot.
(The station software must be group 12 or higher, and the
MASTR III interface board must have the digital squelch pot
on it.)
METERING MODE
The Utility Handset can monitor station performance by
providing a readout of various DC voltages in a properly
configured station.
To enter the Metering Mode from the main menu, press the
B key.
Select a specific parameter to measure by pressing the
corresponding number key shown below:
Parameter MIIe function MIII base station function Analog Range
1
2
3
4
PWR
Rx
Tx
Ext
Not Used
Rx Meter
Tx Meter
Not Used
Circulator Power Sensor
RSSI, Receiver Sensitivity
External Metering Point
External Metering Point
0-5V
0-5V
0-5V
0-10V
FUNCTION KEY DISPLAY
Power up
handset
None
Enter adjust
pots mode
PAGE 1
Line output
pot
Tx level pot
Line input pot
Channel Guard
pot
DSP line
cancellation
pot
DSP line
input pot
Compressor
Gain pot
PAGE 2
Voting Tone
Gain
Compressor
Threshold
Morse ID
Transmit
PAGE 3
PA Power
Repeater Gain
Back up
one level
Return to
top level
P DC XXX
MENU
P DI XXX
MENU
POT P1
CP XXXXX
END
PRS
7
A
CLR
PA
RG
P CG XXX
MCTX
POTP1
MNO
6
JKL
5
GHI
4
DEF
3
ABC
2
QZ
1
P LO XXX
QZ
1
P TX XXX
ABC
2
P LI XXX
DEF
3
VTG
QZ
1
CT
ABC
2
Figure 6 - Potentiometer Adjust Switches
Down 10 Up 10
Down 100 Up 100
10x
(only applicable with pot 7)
RCLSTO
#
OPR
O
*
Figure 7 - Ramping Switches
LBI-38599
9
The Rx Meter and Tx Meter functions in the MASTR IIe
are used with the Meter Switching kit, 19B226293G1. See
LBI-4848.
In the MASTR III, PWR returns a voltage proportional to
the reflected power in the circulator. Rx is the RSSI line from
the IF module. Tx and EXT are external metering points on
the MASTR III and are brought to a header on the MIII
backplane for use in special functions. Otherwise, they are
available for the operator to use in various metering applica-
tions.
The display provides the appropriate abbreviations and
current level. These readings are updated every 2 seconds (see
Figure 8).
The Handset can also present these data in decimal format.
By pressing the "B" key while in the metering mode, the
handset will toggle from volts to decimal. The decimal meas-
urement range is 0 to 255.
Decimal data are presented with no spaces between the
numbers. The default is analog voltages.
CHANNEL SELECT MODE
In multi-frequency stations, the Utility Handset can change
the selected channel.
To enter the Channel Select Mode from the main menu,
press the "C" key.
The display will show the current channel. To change
channels press the channel number desired (1-4). Assuming a
two channel station with channel 1 as the current channel,
pressing the 2 key will result in the handset displaying "C SEL
2". In order to complete this channel selection, the C key must
be pressed. Now the handset will display "CHAN 2".
If desired, adjustments to the Channel Guard Level settings
for channel 2 may now be made. It should be noted that when
the handset is in the Channel Select Mode ("C SEL x"), any
entry may be discarded by pressing the CLR key. Pressing the
CLR key a second time will return the handset to the "MENU"
display.
The Channel Select Mode may also be entered from the
Channel Display Mode ("CHAN x") by using the "C" key. The
resulting display is "C SEL". Channel selection may proceed
as described above. Also note that when in the Channel Select
Mode, the previously selected channel may be redisplayed by
entering an invalid channel number (which includes a blank
selection).
REMOTE STATION ADJUSTMENTS VIA
MODEM
Function Key Display
Power up
handset
None
Enter metering
mode
To select
power
To select
Rx
To select
Tx
To select
external
To toggle to
decimal display
Numbers read with no spaces
in decimal:
XXX
B
GHI
4
MENU
EXT X XX
TX X XX
RX X XX
PWR X XX
METER
DEF
3
ABC
2
QZ
1
B
Figure 8 - Metering Switches
Function Key Display
Power up
handset
None
Display Current
channel
To select new
channel
GHI
4
MENU
C SEL X
CHAN X
DEF
3
ABC
2
QZ
1
C
C
Figure 9 - Channel Select Switches
LBI-38599
10
Remote station adjustments and diagnostics are available
using the MASTR IIe/III Utility Program (LBI-38540).
The Utility Handset must be used to adjust the baud rate of
a remote station. The default settings are:
Baud rate 9600 bps
Parity NONE
Word length 8 bits
Stop bits 2
Only the baud rate is programmable. The procedure below
allows you to select the baud rate required by your modem.
Power up the station. Successful power up will cause the
display to show "MENU". From the "MENU" display, press
the "#" key.
The display will show:
BRxxxxx
where xxxxx is the current baud rate right-justified in the
8 character display.
Numeric keys used to select the baud rates are given below.
Keys other than those identified below are invalid and are not
operable.
1. 300 baud 4. 4800 baud
2. 1200 baud 5. 9600 baud
3. 2400 baud
After selecting the desired baud rate, press the STO key to
actually change the baud rate in the System Module.
MAINTENANCE
Refer to Maintenance Manual LBI-38509 for complete
maintenance information for the Utility Handset
(19A705965P1) or LBI-38412 for Utility Handset
(19A705870P2).
• Circuit Analysis
• Test Specifications
• Handset Self-Test
• Outline and Schematic Diagrams
• Parts List
• IC Data
Printed in U.S.A.
LBI-38599
11
LBI-38599E
APPENDIX A
MASTR IIe
UTILITY HANDSET OPERATION
FOR
STATIONS USING GROUP 5 OR EARLIER SOFTWARE
A-1
Copyright © March 1991, Ericsson GE Mobile Communications Inc.
TABLE OF CONTENTS
Page
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3
Control Shelf . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3
Auxiliary Backplane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3
Power On . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3
Operating Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4
System Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4
Function Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-5
ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-7
Potentiometer Adjust Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-7
Metering Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-8
Channel Select Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-9
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-10
SPECIFICATIONS
POWER SUPPLY
Nominal 12.5 Vdc
Range 10 to 16 Vdc
No failure or lack of function within this range.
CURRENT DRAIN
On (rated Audio) 100 mA
OPERATING TEMPERATURE RANGE
Nominal 24
o
C
Operating Range -30
o
C to +60
o
C
Vcc VOLTAGE
At 25
o
C 5.0 Vdc to 5.4 Vdc, typical
At 30
o
C 5.5 Vdc to 5.9 Vdc, typical
At 70
o
C 5.0 Vdc to 4.6 Vdc, typical
LBI-38599
A-2
DESCRIPTION
The MASTR IIe Utility Handset 19A705965P1 or
19A705870P2 and handset cable 19D901619P2 are used with
the Auxiliary Backplane (B3MB1B) to provide simple, port-
able programming and diagnostic functions for the MASTR
IIe Control Shelf. Information contained in this section is
applicable to MASTR IIe stations using Group 5 or earlier
software.
The Control Shelf auxiliary backplane contains the handset
interface circuitry and the handset connector. This backplane
allows the service technician to perform some programming
and diagnostic functions using the MASTR IIe Utility Hand-
set. The Handset provides the following:
• Local Microphone & Speaker
• Adjustment of Digital Potentiometers
• Station Metering
• Channel Selection
• Function Enable/Disable
CONTROL SHELF
The Control Shelf hardware includes a EEPROM contain-
ing the operating characteristics (or personality) of the Control
Shelf. The contents of the EEPROM can be changed only with
the use of the Utility Handset (and cable) connected to the
Auxiliary Backplane board, or with a personal computer.
All audio input and output levels for the Control Shelf are
controlled by electronic potentiometers. These potentiometers
must be also be adjusted by the Utility Handset and cable, or
by a personal computer. There are NO manual adjustments on
the Control Shelf!
A complete description of the Control Shelf EEPROM
personality settings is contained in the programming software,
TQ3353. A complete listing of all lines and signals as well as
a Level Adjustments Discussion is contained in the Control
Shelf Maintenance Manual, LBI 38430.
AUXILIARY BACKPLANE
The Auxiliary Backplane plugs into the standard MASTR
IIe Backplane through a 96-pin DIN connector (see Figure 1).
The backplane contains the necessary hardware to convert
TTL levels of the handset to RS232 data understood by the
MASTR IIe Control Module.
A mounting bracket and TORX
®
T15 screws secure the
Auxiliary Backplane to the station frame. The Utility Handset
cable connects to the RJ45 jack (
J2
) on the Auxiliary Back-
plane board.
OPERATION
POWER ON
While depressing either VOLUME button on the side of
the handset, toggle the RESET switch on the front of the
MASTR IIe Power Module. This tells the Control Module
there is a handset present.
Figure 1 - Backplane and Auxiliary Backplane Boards
LBI-38599
A-3
Successful power-up will cause the display to show:
On the initial handset power-up, the invalid key flag may
appear in the display, and should be disregarded. Pressing
any key will cause it to disappear.
OPERATING FUNCTIONS
The handset operating functions are shown in Figure 2.
These functions are in addition to the operating charac-
teristics of the handset as follows:
Local Push-to-Talk is a toggled (press On-press Off)
function. When active, the handset’s microphone may be
used and the "IN USE" flag on the display will be
illuminated. Also the Tx LED on the Control Module
will light if Tx is enabled.
END Button always returns the handset to the top
MENU display.
CLR Button always moves the handset back one level.
Volume Keys may be held continuously to change any
potentiometer setting.
Handset Speaker is active and may be used as an inter-
com speaker.
Scan Active Indicator will light the ROAM light on the
display whenever Scan is active.
SYSTEM FUNCTIONS
Function Mode
The Utility Handset may be used to toggle special func-
tions in the MASTR IIe station (see Figure 3).
To enter the Function Select Mode from the main menu,
press the FNC key. While in the various Function Modes
(select/display), the handset will show FCN on the display.
To clear an unwanted entry in the Function Select Mode,
press CLR. Pressing CLR a second time will return the
handset to "MENU" display.
If an invalid function number is entered and either START
or STOP is pressed, the handset will display the INVALID key
flag.
To make another selection from the Function Display
Mode, press the CLR key. The handset will return to the
Function Select Mode and display "F SEL".
The state of the control shelf after starting or stopping
functions is dependent upon the functions in question and
external control shelf signals (e.g., keying/unkeying a local
mic). Refer to the Function Description section for specific
details.
Select a specific function as listed in Figure 4 and enter the
corresponding number. Then press the "A" key to start (Acti-
vate) the function.
To stop the selected function, press the "C" key.
END will return the handset to the top menu, and like the
CLR function, will leave the station in the condition set by the
different function commands.
To reset the station’s programmed personality defaults,
toggle the RESET switch located on the front of the MASTR
IIe Power Module.
Make sure that the station RF equipment has been
properly aligned before making ANY adjustments to
the control shelf.
NOTE
The handset will not operate if a PC is connected to the
DB9 serial port of the MASTR IIe backplane.
NOTE
MENU
If the function was programmed to be active, starting it
will have no effect.
NOTE
In some functions, the stop key will actually reset the
station to its originally programmed state rather than
stop the selected function. Consult the detailed expla-
nations of the function to determine the actual operation
of each function.
NOTE
LBI-38599
A-4
FUNCTION DESCRIPTIONS
Repeat Enable
Start: Enable the repeater function.
Stop: Restore the original EEPROM setting.
Comment: Since the repeat enable/disable function is pro-
grammable by channel, changing the channel may negate this
function.
Repeat Disable
Start: Disable the repeater function.
Stop: Restore the original EEPROM setting.
Comment: See Repeat Enable.
Tx Enable
Start: Enable the transmitter.
Stop: Restore the original EEPROM setting.
Comment: Since the Tx enable/disable function is program-
mable both by channel and PTT type, changing the channel or
PTT may negate this function. (See Remote, Local and Exter-
nal PTT).
Figure 2 - Handset Operations
Function Key Display
Power up
handset
None
Enter function
select mode
Input desired
function; e.g. 7
for CGD Enable
To start function
To stop function
To return to
function
select mode
F SEL 7
MENU
START 7
F SEL
F SEL
STOP 7
CLR
PRS
7
C
A
FNC
Figure 3 - System Functions
LBI-38599
A-5
NUMBER FUNCTION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Repeat Enable
Repeat Disable
Tx Enable
Tx Disable
CG Encode Enable
CG Encode Disable
CG Decode Enable
CG Decode Disable
Intercom
CG Monitor
Remote PTT
Local PTT
External PTT
Morse Code
Battery Alarm Enable
Battery Alarm Disable
Test Tone
Soft Boot
CCT Disable
RUS Disable
Main Rx Enable
Main Rx Disable
Aux Rx Enable
Aux Rx Disable
Aux Control 1 On
Aux Control 1 Off
Scan Enable
Scan Disable
Priority Scan Enable
Priority Scan Disable
Figure 4 - Function Chart
Tx Disable
Start: Disable the transmitter.
Stop: Restore the original EEPROM setting.
Comment: See Tx Enable.
CG Encode Enable
Start: Enable channel guard encode.
Stop: Restore the original EEPROM setting.
Comment: Since the CG Encode/decode enable/disable func-
tion is programmable both by channel and key, changing the
channel or key may negate this function.
CG Encode Disable
Start: Disable channel guard encode.
Stop: Restore the original EEPROM setting.
Comment: See CG Encode Enable.
CG Decode Enable
Start: Enable channel guard decode.
Stop: Restore the original EEPROM setting.
Comment: See CG Encode Enable.
CG Decode Disable
Start: Disable channel guard decode.
Stop: Restore the original EEPROM setting.
Comment: See CG Encode Enable.
Intercom
Start: Enable the intercom function.
Stop: Restore the original EEPROM setting.
Comments: Intercom does not allow remote PTT or local PTT
to transmit. The station will continue to repeat.
CG Monitor
Start: Enable the Channel Guard monitor function.
Stop: Restore the original EEPROM setting.
Remote PTT
Start: Key remote push-to-talk.
Stop: Unkey remote push-to-talk.
Local PTT
Start: Key local push-to-talk.
Stop: Unkey local push-to-talk.
External PTT
Start: Key external push-to-talk.
Stop: Unkey external push-to-talk.
Comment: This is a new function intended for future use.
Morse Code
Start: Send Morse code ID if one is programmed.
Stop: Disable Morse code ID function.
Comments: If no ID is present, START will have no effect. If
STOP is selected while station is transmitting ID, ID will be
interrupted and terminated.
Battery Alarm Enable
Start: Disable battery Alarm Tone.
Stop: Restore the original EEPROM setting.
LBI-38599
A-6
Battery Alarm Disable
Start: Disable battery Alarm Tone.
Stop: Restore the original EEPROM setting.
Test Tone
Start: Begin sending test tone.
Stop: Stop sending test tone.
Comment: The test tone frequency is 1000 Hertz.
Soft Boot
Start: Toggles software reset.
Stop: No function.
Comments: Soft Boot will cause the Control Module to reset
to its originally programmed parameters. Immediately after
Soft Boot, either volume key must be depressed to reestablish
communication between the Utility Handset and the Control
Module. The same is true if the RESET switch on the Power
Module is used.
Carrier Control Timer Disable
Start: Disable the carrier control timer.
Stop: Restore the original EEPROM setting.
RUS Disable
Start: Enable Receiver Unsquelched Push to Talk.
Stop: Restore the EEPROM setting of RUS PTT Enable.
Main Rx Enable
Start: Enable the main receiver.
Stop: Restore the original EEPROM setting.
Main Rx Disable
Start: Disable the main receiver.
Stop: Restore the original EEPROM setting.
Aux Rx Enable
Start: Enable the auxiliary receiver and toggle Aux Rx Mute.
Stop: No function.
Aux Rx Disable
Start: Disable the auxiliary receiver and toggle Aux Rx Mute.
Stop: No function.
Aux Control 1 On
Start: Activate Auxiliary 1 output.
Stop: Restore the original EEPROM setting.
Aux Control 1 Off
Start: Deactivate Auxiliary 1 output.
Stop: Restore the original EEPROM setting.
Scan Enable
Start: Enable SCAN.
Stop: Restore EEPROM setting of SCAN Enable.
Scan Disable
Start: Disable SCAN.
Stop: Restore EEPROM setting of SCAN Enable.
Priority Scan Enable
Start: Enable Priority SCAN.
Stop: Restore EEPROM setting of Priority SCAN Enable.
Priority Scan Disable
Start: Disable Priority SCAN.
Stop: Restore EEPROM setting of Priority SCAN Enable.
ADJUSTMENTS
POTENTIOMETER ADJUST MODE
The MASTR IIe Control Module can contain up to 7 digital
potentiometers to set different levels. These potentiometers
must be adjusted properly to ensure optimum station perform-
ance.
To enter the Adjust Potentiometer Mode from the main
menu, press the "A" key.
Select a specific potentiometer by pressing the correspond-
ing number key shown below (see Figure 5):
1 = Line Output Level
2 = Transmit Level
3 = Line Input Level
4 = Channel Guard Level
5 = DSP Line Cancellation Level
6 = DSP Line Input Level
7 = Compressor Level
Ramping switches for these adjustments are shown in
Figure 6.
LBI-38599
A-7
Note that the "0" key is only applicable to the Compressor
Level Potentiometer (7), and is a toggled (Press On-Press Off)
function.
The adjustment range for the Compressor Potentiometer is
0 to 32767. The range for all other potentiometers is 0 to 255.
The handset adjusts potentiometers in real time. These
adjustments are recorded in the personality of the Control
Module.
Service Notes:
1. Potentiometers 5, 6 and 7 apply to Control Modules
with the Digital Signal Processing (DSP) board.
2. Also, the Channel Guard Level is now
channel spe-
cific. To correctly set the level associated with a
channel, first select a channel using the Channel
Select Mode described on page A-11. Then return to
the Adjust Potentiometer Mode and adjust the Chan-
nel Guard level pot. (Only applicable to multiple
frequency stations.)
METERING MODE
The Utility Handset can monitor station performance by
providing a readout of various DC voltages in a properly
configured MASTR IIe.
To enter the Metering Mode from the main menu, press the
B key.
Select a specific parameter to measure by pressing the
corresponding number key as shown below:
Parameter MIIe function MIII base station function Analog Range
1
2
3
4
PWR
Rx
Tx
Ext
Not Used
Rx Meter
Tx Meter
Not Used
Circulator Power Sensor
RSSI, Receiver Sensitivity
External Metering Point
External Metering Point
0-5V
0-5V
0-5V
0-10V
Function Key Display
Power up
handset
None
Enter adjust
pots mode
Line output
pot
Tx level pot
Line input pot
Channel Guard
pot
DSP line
cancellation
pot
DSP line
input pot
Compressor
gain pot
Back up
one level
Return to
top level
P DC XXX
MENU
P DI XXX
MENU
POT SEL
CP XXXXX
END
PRS
7
A
CLR
P LO XXX
P TX XXX
P CG XXX
P LI XXX
POT SEL
MNO
6
JKL
5
GHI
4
DEF
3
ABC
2
QZ
1
Figure 5 - Potentiometer Adjust Switches
It is not necessary to backup 1 level to the
display in order to select another pot. Just press the
desired number which corresponds to the next pot for
adjustment.
NOTE
POT SEL
Down 10 Up 10
Down 100 Up 100
10x
(only applicable with pot 7)
RCLSTO
#
OPR
O
*
Figure 6 - Ramping Switches
LBI-38599
A-8
The Rx Meter and Tx Meter functions in the MASTR IIe
are used with the Meter Switching kit, 19B226293G1. See
LBI-4848.
In the MASTR III, PWR returns a voltage proportional to
the reflected power in the circulator. Rx is the RSSI line from
the IF module. Tx and EXT are external metering points on
the MASTR III and are brought to a header on the MIII
backplane for use in special functions. Otherwise, they are
available for the operator to use in various metering applica-
tions.
The display will provide the appropriate abbreviations
and current level. These readings are updated every 2 sec-
onds (see Figure 7).
The Handset can also present these data in decimal format.
By pressing the "B" key while in the metering mode, the
handset will toggle from volts to decimal. The decimal meas-
urement range is 0 to 255.
Decimal data are presented with no spaces between the
numbers. The default is analog voltages.
CHANNEL SELECT MODE
In multi-frequency MASTR IIe stations, the Utility Hand-
set can change the selected channel.
To enter the Channel Select Mode from the main menu,
press the "C" key (see Figure 8).
The display will show the current channel. To change
channels press the channel number desired (1-4). Assuming a
two channel station with channel 1 as the current channel,
pressing the 2 key will result in the handset displaying "C SEL
2". In order to complete this channel selection, the C key must
be pressed. Now the handset will display "CHAN 2".
If desired, adjustments to the Channel Guard Level settings
for channel 2 may now be made. It should be noted that when
the handset is in the Channel Select Mode ("C SEL x"), any
entry may be discarded by pressing the CLR key. Pressing the
CLR key a second time will return the handset to the "MENU"
display.
The Channel Select Mode may also be entered from the
Channel Display Mode ("CHAN x") by using the "C" key.
The resulting display is "C SEL". Channel selection may
proceed as described above. Also note that when in the Chan-
nel Select Mode, the previously selected channel may be
redisplayed by entering an invalid channel number (which
includes a blank selection).
Function Key Display
Power up
handset
None
Enter metering
mode
To select
power
To select
Rx
To select
Tx
To select
external
To toggle to
decimal display
Numbers read with no
spaces in decimal:
XXX
B
GHI
4
MENU
EXT X XX
TX X XX
RX X XX
PWR X XX
METER
DEF
3
ABC
2
QZ
1
B
Figure 7 - Metering Switches
Various DC voltages may be selected by pressing the
appropriate number without having to back up 1 level
(same as POT selection.)
NOTE
Function Key Display
Power up
handset
None
Display Current
channel
To select new
channel
GHI
4
MENU
C SEL X
CHAN X
DEF
3
ABC
2
QZ
1
C
C
Figure 9 - Channel Select Switches
LBI-38599
A-9
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Ericsson MASTR IIe Maintenance Manual
- Category
- Two-way radios
- Type
- Maintenance Manual
Ericsson MASTR IIe is a mobile communications utility handset that provides simple programming and diagnostic functions to aid the service technician when servicing the equipment. It offers the following capabilities:
- Local Microphone and Speaker: Allows for local communication and intercom functionality.
- Adjustment of Digital Potentiometers: Enables precise control of audio input and output levels.
- Station Metering: Provides real-time monitoring of various station parameters.
- Channel Selection: Facilitates quick and easy selection of desired channels.
- Function Enable/Disable: Allows for customization of station functions, such as repeat disable, CG encode/decode disable, and scan enable/disable.
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