Standard Horizon HX600S, Service Manual

Page: 12 / 30

12
Alignment
Squelch Threshold and Tight Squelch Adjustment
N-FM Squelch Level Adjustment
Set the transceiver to CH 12.
Press and hold in the PTT , SQL , [
] and [ ] key while
turning the transceiver on to enter the Alignment
Mode.
Press the [
] or [ ] key to select the display to
“
FMHS
.“ The transceiver now is in the N-FM Squelch
Hysteresis Alignment Mode.
Press the [ MEM ] key to enable adjustment of the N-
FM Squelch Hysteresis.
Press the [
] or [ ] key to select the display to “
00
.“
Press the [ MEM ] key.
Set the RF signal generator output to 156.600 MHz, at
a level of –12 dBµV with ±3 kHz deviation with a 1
kHz audio tone.
Press the [
] or [ ] key to select the display to
“
FMTH
.“ The transceiver now is in the N-FM Squelch
Threshold Alignment Mode.
Press the [ MEM
] key twice.
Set the RF signal generator output to 156.600 MHz, at
a level of –4 dBµV with ±3 kHz deviation with a 1
kHz audio tone.
Press the [
] or [ ] key to select the display to “
FMTI
.“
The transceiver now is in the N-FM Squelch Tight
Alignment Mode.
Press the [ MEM
] key twice.
AM Squelch Level Adjustment
Set the transceiver to 1100 kHz.
Press and hold in the PTT , SQL , [
] and [ ] key while
turning the transceiver on to enter the Alignment
Mode.
Press the [
] or [ ] key to select the display to
“ AMHS .“ The transceiver now is in the AM Squelch
Hysteresis Alignment Mode.
Press the [ MEM ] key to enable adjustment of the AM
Squelch Hysteresis.
Press the [
] or [ ] key to select the display to “
00
.“
Press the [ MEM ] key.
Set the RF signal generator output to 1100 kHz, at a
level of –8 dBµV with 30 % modulation with a 1 kHz
audio tone.
Press the [
] or [ ] key to select the display to
“
AMTH
.“ The transceiver now is in the AM Squelch
Threshold Alignment Mode.
Press the [ MEM
] key twice.
Set the RF signal generator output to 1100 kHz, at a
level of +3 dBµV with 30 % modulation with a 1 kHz
audio tone.
Press the [
] or [ ] key to select the display to “
AMTI
.“
The transceiver now is in the AM Squelch Tight Align-
ment Mode.
Press the [ MEM
] key twice.
Squelch Threshold and Tight Squelch Adjustment
W-FM Squelch Level Adjustment
Set the transceiver to 98.000 MHz.
Press and hold in the PTT , SQL , [
] and [ ] key while
turning the transceiver on to enter the Alignment
Mode.
Press the [
] or [ ] key to select the display to
“
WFMHS
.“ The transceiver now is in the W-FM
Squelch Hysteresis Alignment Mode.
Press the [ MEM ] key to enable adjustment of the W-
FM Squelch Hysteresis.
Press the [
] or [ ] key to select the display to “
00
.“
Press the [ MEM ] key.
Set the RF signal generator output to 98.000 MHz, at
a level of +5 dBµV with ±22.5 kHz deviation with a 1
kHz audio tone.
Press the [
] or [ ] key to select the display to
“
WFMTH
.“ The transceiver now is in the W-FM
Squelch Threshold Alignment Mode.
Press the [ MEM
] key twice.
Set the RF signal generator output to 98.000 MHz, at
a level of +15 dBµV with ±22.5 kHz deviation with a 1
kHz audio tone.
Press the [
] or [ ] key to select the display to
“ WFMTI .“ The transceiver now is in the W-FM Squelch
Tight Alignment Mode.
Press the [ MEM
] key twice.
Exit from the Alignment Mode
To close the Alignment mode, just press and hold in the
POWER switch for 2 seconds (to turn the power off).
The next time the transceiver is turned on, normal opera-
tion may resume.