Standard Horizon HX851, Руководство по обслуживанию

Страница: 15 / 34

15
Alignment
08: Squelch Threshold Adjustment
Set the RF signal generator output to channel fre-
quency, at a level of –8 dBµ with ±3.0 kHz deviation
with a 1 kHz audio tone.
Click the left mouse button on the [ 08: Threshold
]
button. The transceiver now is in the Squelch
Threshold Alignment Mode.
Press the [ Get
] key to read the Squelch Threshold
data.
Click the left mouse button on the [ 08: Threshold
]
button to exit the the Squelch Threshold Alignment
Mode.
09: Squelch Tight Adjustment
Set the RF signal generator output to channel fre-
quency, at a level of 0 dBµ with ±3.0 kHz deviation
with a 1 kHz audio tone.
Click the left mouse button on the [ 09: Tight
] but-
ton. The transceiver now is in the Squelch Tight
Alignment Mode.
Press the [ Get
] key to read the Squelch Tight data.
Click the left mouse button on the [ 08: Tight
] button
to exit the the Squelch Tight Alignment Mode.
10: CH70 Squelch Threshold Adjustment
Set the RF signal generator output to 156.525 MHz,
at a level of –5 dBµ with ±3.0 kHz deviation with a 1
kHz audio tone.
Click the left mouse button on the [ 10: CH70 SQL
]
button. The transceiver now is in the CH70 Squelch
Threshold Alignment Mode.
Press the [ Get
] key to read the Squelch Tight data.
Click the left mouse button on the [ 10: CH70 SQL
]
button to exit the the CH70 Squelch Threshold Align-
ment Mode.
11: DC Voltmeter
Reduce the DC power supply voltage to 7.4 V.
Click the left mouse button on the [ 11: DC Voltage
]
button. The transceiver now is in the DC Voltmeter
Alignment Mode.
Press the [ Get
] key to read the Squelch Tight data.
Click the left mouse button on the [ 10: CH70 SQL
]
button to exit the the DC Voltmeter Alignment Mode.