Software Alignment/Confirmation Mode - Standard Horizon QUEST-X GX1500S 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."
Set the RF Signal Generator output to 156.800 MHz,
at a level of –10dBµV, ±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 +4dBµ ±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."
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
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S S C
TARTING OFTWARE ONFIRMATION
Confirm that the transceiver's power is turned off.
Short the TEST points (JP1001).
Press and hold the PWR key until the radio turns on
while press and holding the [ DW ( IC )] and [ DIS-
TRESS ] keys. Release the keys, the
LCD will be as shown for one sec-
ond 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 4.0 kHz ±0.3 kHz.
: 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).
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