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3-2-2. Overall Characteristics Check
Perform the overall characteristics check according to the
following procedure.
Procedure
1. Output level check
↓
2. S/N check
↓
3. Frequency characteristic check
↓
4. Distortion check
↓
5. RF Level indicator check
↓
6. AF Level indicator/AF indicator check
↓
7. Muting level/RF indicator check
↓
8. BATT indicator check
↓
9. Tone squelch check
Connection
Oscilloscope
MIC amp
600 Z
balance
input
Audio analyzer
DC power supply
DC IN 9 V
+9 Vdc
Signal generator
ANTENNA
A IN
Function generator
3-8
Equipment and Tools
. DC power supply: +9 Vdc
. Signal generator
. Function generator
. Audio analyzer
. Mic amp (Noise mete) with A-weighted filter
. Oscilloscope
. DC current meter
1. Output level check
Procedure
(1) Set the WRR-802A as follows;
(2) Connect the audio analyzer to the TUNER OUTPUT
(3) Connect the signal generator to the ANTENNA A IN
(4) Set the signal generator as follows:
(5) Check that the TUNER OUTPUT (XLR type) connec-
TUNER OUTPUT
(6) Connect the audio analyzer to the TUNER OUTPUT
(7) Check that the TUNER OUTPUT (TRS type) connec-
WRR-802A
(8) Connect the signal generator to the ANTENNA B IN
ANTENNA
(9) Perform the procedures (5), (6), and (7).
B IN
Channel setting:
U64 model; Group 00, 6501 channel (776.125 MHz)
U66 model; Group 00, 6701 channel (788.125 MHz)
U68 model; Group 00, 6901 channel (800.125 MHz)
VOL. control: MAX
Muting:
OFF
TUNER OUTPUT LEVEL switch: LINE (_20 dBm)
(XLR type) connector via MIC amp (Amplification
gain 0 dB).
connector.
Signal generator setting
FREQUENCY(carrier frequency)
U64 model; 776.125 MHz
U66 model; 788.125 MHz
U68 model; 800.125 MHz
RF OUTPUT (Output level): 60 dBuV
MODULATION (Modulation frequency): 1 kHz
DEVIATION (Frequency deviation): ± 5 kHz
tor output level is _21 dBm ± 1.5 dB (at 600 Z loaded).
(TRS type) connector via the MIC amp (Amplification
gain 0 dB).
tor output level is _21 dBm ± 1.5 dB (at 600 Z loaded).
connector.
EMF
(= _53 dBm)
WRR-802A (U)
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