Sony WRR-800A Service Manual page 28

8. BATT (Battery) indicator check
Procedure
(1) Set the WRR-800A as follows;
Channel setting: Group 00, 6701 channel
(799.250 MHz)
VOL. control: MAX
Muting: ON (Normal mode)
(2) Connect the signal generator to the ANTENNA A IN
connector.
(3) Set the signal generator as follows:
Signal generator setting
FREQUENCY (Carrier frequency): 799.250 MHz
RF OUTPUT (Output level): 60 dBuV
MODULATION (Modulation frequency):
DEVIATION (Frequency deviation): ± 2.1 kHz
(4) Turn on and off the MODULATION (modulation
frequency) of the signal generator as follows, and
check that BATT Indicator change also as follows:
MODULATION setting BATT indicator
of signal generator
ON BATT indicator (LCD):
Turn the signal
generator on and BATT
indicator starts blinking
after 3 seconds.
BATT indicator (LED):
Turn the signal
generator on and BATT
indicator starts blinking
after 3 seconds.
OFF BATT indicator (LCD):
Blinking is stop.
BATT indicator (LED):
Goes out.
(5) Connect the signal generator to the ANTENNA B IN
connector, and perform the procedures (3) and (4)
above.
3-12
EMF
(= _53 dBm)
32.782 kHz
(32.782 kHz must be set
by connecting Function
generator)
LCD:
BATT
LCD:
BATT
9. Tone squelch check
Procedure
(1) Set the WRR-800A as follows;
Channel setting: Group 00, 6701 channel
(799.250 MHz)
VOL. control: MAX
Muting: ON (Normal mode)
(2) Connect the signal generator to the ANTENNA A IN
connector.
(3) Set the signal generator as follows:
Signal generator setting
FREQUENCY (Carrier frequency): 799.250 MHz
RF OUTPUT (Output level): 60 dBuV
MODULATION (Modulation frequency):
DEVIATION (Frequency deviation): ± 1.4 kHz
(4) Turn on and off the MODULATION (modulation
frequency) of the signal generator as follows, and the
LCD indication changes also as follows.
MODULATION ON/OFF
on signal generator
ON
OFF
(5) Connect the signal generator to the ANTENNA B IN
connector, and perform the procedures (3) and (4)
above.
EMF
(= _53 dBm)
32.768 kHz
(32.768 kHz must be set
by connecting Function
generator)
LCD indication
GP/CH indication (LCD):
"00. 6701" appears.
GP/CH indication (LCD):
"NO TONE" appears.
WRR-800A