Ericsson MDX SERIES, Service Manual, Page: 6 / 14

Generate Pseudo Random HS Data (9600 PRD)
This command causes the radio to begin generating pseudo
random data using its modem chip. This data will be sent at 9600
baud. To modulate the transmitter with this data, the transmitter
must have been keyed using the "key transmitter" command.
Select the "9600 PRD" menu selection. Press the MNU
button to begin test. The display flashes indicating the signal is
being generated. The pattern will continue until another button
is pressed.
Encode Channel Guard Tone (150 CPS)
This command causes the radio to generate a subaudible CG
tone at 150 cps. To modulate the transmitter with this tone, the
transmitter must have been keyed using the "key transmitter"
command.
Select the "150 CPS" menu selection. Press the MNU button
to begin the test. The display flashes indicating the signal is being
generated. Press any button to terminate the test tone.
Report Receiver Carrier Sense (CAS TEST)
This command causes the radio to indicate opening/closing
squelch on its display.
Select the "CAS TEST" menu selection. Press the MNU
button to display the state of the CAS signal, either "RCV SIG"
or "NO SIG". The radio monitors the signal and displays any
changes in the CAS signal. Pressing any button terminates the
test.
Across Band Switching (BAND SWT)
This command causes the radio to switch the synthesizer
between personality channels 1 and 4 at approximately 2 second
intervals.
Select the "BAND SWT" test from the menu. Press the MNU
button and the display will alternate between "CHAN 1" and
"CHAN 4" as the channels are changed. Press any button to
terminate the test.
Generate Alert Tone (ALERT TN)
This command causes the radio to sound a beeping 528 Hz
tone to test the alert tone audio paths.
Select the "ALERT TN" test from the menu. When the MNU
button is pressed, the display flashes indicating the tone is active.
Pressing any button terminates the test.
External RAM Test (RAM TEST)
This test causes the radio to conduct a test of its 8K RAM
chip.
Select the "RAM TEST" command from the menu. Press the
MNU button; the display indicates either "RAM PASS" or
"RAM FAIL", depending on the test results.
Software Version Number (UPR)
This command displays the software version number.
Checksum Test (PROG TS)
This command causes the radio to conduct a checksum test
of its program memory.
Select "PROG TS" from the menu. Press the MNU button to
execute the test. The display shows either "PRG PASS" or "PRG
FAIL" based on the results.
Default Set-up (DEFAULT)
This command causes the radio to revert to the default
settings. The radio turns off the transmitter, disables the transmit
audio, and sets the ASP back to its power-up state.
Select the "DEFAULT" command. Press the MNU button
and the display changes to "TESTMODE" indicating the default
set-up has occurred.
Set Channel (SET CHAN)
This command causes the radio to select one of the channels
on the test mode frequency set that is in the current personality.
Select the "SET CHAN" command from the menu. Press the
MNU button to display the channel selection. Pressing the
GROUP UP/DOWN buttons scroll through the channel selec-
tions. Pressing any button terminates the test.
Volume Control (VOLUME)
This command enables you to adjust the volume control of
the ASP (audio signal processor IC).
Select the "VOLUME" command from the menu. Press the
MNU button and the display flashes, indicating the test is in
progress. Pressing the Volume Up/Down buttons increments or
decrements the volume level by one step. Press the MNU button
to terminate the test.
11 Hertz Test (11 HERTZ)
This command generates an 11 Hz square wave on the low
speed data (Channel Guard) output. To modulate the transmit-
ter with this data, the transmitter must have been keyed using
the "key transmitter" command.
Select the "11 HERTZ" test from the menu. Press the MNU
button; the display flashes indicating the signal is being gen-
erated. Press any key to terminate the test.
TX Standard Busy Tone (TX BSYTN)
This command generates a standard GE-MARC busy tone.
To modulate the transmitter with this data, the transmitter must
have been keyed using the "key transmitter" command.
Select the "TX BSYTN" command from the menu. Press
the MNU button; the display will begin flashing to indicate a
standard busy tone is being generated. Press any key to termi-
nate the test.
TX Alternate Busy Tone (TX ABTON)
This command is used to generate an alternate GE-MARC
busy tone. To modulate the transmitter with this data, the
transmitter must have been keyed using the "key transmitter"
command.
Select the "TX ABTON" command from the menu. Press
the MNU button; the display will begin flashing to indicate an
alternate busy tone is being generated. Press any key to termi-
nate the test.
TX GE-MARC Tone (TX GMARC)
This command causes the radio to transmit the user speci-
fied GE-MARC tone.
Select the "TX GMARC" command from the menu. Press
the MNU button to display the GE-MARC tone. Pressing the
GROUP UP/DOWN key scrolls through the possible GE-
MARC tone selections. To modulate the transmitter with this
data, the transmitter must have been keyed using the "key
transmitter" command. See Appendix A for a listing of the
GE-MARC tones.
Tone Set Select (TONE SEL)
This command causes the radio to select a channel in the
user specified GE-MARC test mode tone set.
Select the "TONE SEL" command from the menu. Press
the MNU button to display the tone set. Pressing the GROUP
UP/DOWN button scrolls through the tone set selections.
Press the MNU button to terminate the selection. This selec-
tion is then retained until a new tone set is selected (not
retained once test mode is exited). To modulate the transmitter
with this data, the transmitter must have been keyed using the
"key transmitter" command.
DTMF Tone (TX DTMF)
This command causes the radio to transmit the selected
DTMF tone (0-9,*,#).
Select the "TX DTMF" command from the menu. Press
the MNU button to display the selected DTMF tone. Pressing
the GROUP UP/DOWN button scrolls through the possible
selections. Press the MNU button to terminate the test. To
modulate the transmitter with this data, the transmitter must
have been keyed using the "key transmitter" command.
Decode Test (DECODE T)
This command causes the radio to attempt to decode a
GE-MARC tone set. The call is looked for on the currently
selected channel (SET CHAN) using the currently selected
tone set (TONE SEL).
Select the "DECODE T" command from the menu. Press
the MNU button; the radio immediately begins attempting to
decode the selected tone set and continues until either it is
decoded (at which time "DEC COMP" is displayed) or the user
terminates the function by pressing any key.
Encode Test (ENCODE T)
This command causes the radio to transmit a tone set. The
call is originated on the currently selected channel (SET
CHAN) using the currently selected tone set (TONE SEL).
Select the "ENCODE T" command from the menu. Press
the MNU button; the radio will initiate the test and once
completed "ENC COMP" will be displayed. To modulate the
transmitter with this data, the transmitter must have been
keyed using the "key transmitter" command.
Relay Switch (RELAY)
This command causes the relay (external alarm) line to
toggle once each second.
Select the "RELAY" command from the menu. Press the
MNU button; the display begins flashing to indicate the relay
line is being pulsed. Press any key to terminate the test.
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