Software Alignment/Confirmation Mode - Standard Horizon Matrix GX3000S Service Manual

Alignment

Software Alignment/Confirmation Mode

The "Software Alignment/Confirmation Mode" has been
build in the microprocessor in order to adjust and con-
firm the performance of transceiver.
The purpose is to adjust transceiver simply and to con-
firm the performance of transceiver smoothly.
S S A
TARTING OFTWARE LIGNMENT
 Confirm that the transceiver's power is turned off.
 Short the TEST points (JP1001).
 Press and hold the VOL/PWR knob until the radio
turns on while press and holding the [ CALL ( MENU )]
and [ DISTRESS ] keys. The LCD
will be as shown in the illustration
at the right.
Squelch Adjustment
 Setup the test equipment as shown below.
RF Signal
Generator
 Press the [ SCAN ( MEM )] key to re-
call the Alignment Item "04:
THRESHOLD THRESHOLD THRESHOLD." THRESHOLD THRESHOLD
 Set the RF Signal Generator output to 156.800 MHz,
at a level of –10 dBμV, ±3.0 kHz deviation with a 1
kHz audio tone.
 Press the [ DW ( IC )] key.
 Press the [ ENT ] key to save the new setting.
 Press the [ SCAN ( MEM )] key to re-
call the Alignment Item "05: TIGHT
 Set the RF Signal Generator output
to 156.800 MHz, at a level of +2 dBμ ±3.0 kHz devia-
tion with a 1 kHz audio tone.
 Press the [ DW ( IC )] key.
 Press the [ ENT ] key to save the new setting.
 Press the [ SCAN ( MEM )] key to re-
call the Alignment Item "07: DC
VOLT." VOLT VOLT VOLT VOLT
 Set the DC Power Supply to 13.8 V.
 Press the [ DW ( IC )] key.
 Press the [ ENT ] key to save the new setting.
This completes the Software Alignment Mode. To save
all settings and exit, press and hold the [ DISTRESS ] key
for 2 seconds.
14
M
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GX3000S/E
ANT
04: 04:
04: 04:
05: TIGHT 05: TIGHT." 05: TIGHT
05: TIGHT
07: DC 07: DC
07: DC 07: DC
S S C
TARTING OFTWARE ONFIRMATION
 Confirm that the transceiver's power is turned off.
 Short the TEST points (JP1001).
 Press and hold the VOL/PWR knob until the radio
turns on while press and holding the [ DW ( IC )] and
[ DISTRESS ] keys. Release the
keys, the LCD will be as shown for
one second in the illustration at the
right.
DSC Encoder Confirmation
 Setup the test equipment as shown below.
Sampling
Coupler
50-ohm
Dummy Load
Deviation
Meter
 Set the channel to CH70.
 Press the PTT switch, confirm that the first tone de-
viation is 4.2 kHz ±0.3 kHz.
Note: In CH70 while Software Confirmation Mode,
ever time you are in transmit mode, (every time you
press PTT), the following test tone can be outputted:
1st transmission: Synthetic tone of 1300 Hz and 2100 Hz
2nd transmission: 1300 Hz
3rd transmission: 2100 Hz
4th transmission: No Modulation
5th transmission: Return to 1st transmission
This completes the Software Alignment/Confirmation
Mode. Turn the transceiver's power off, then disconnect
the Jumper from the TEST points (JP1001).
M
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GX3000S/E
ANT