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CCU-590/P/V1(E)
4-33
CN902
S1
S2
S363
E1
E101
E102
E300
E701
E801
LV101
LV201
LV301
LV302
LV401
LV402
LV601 LV602
LV901
LV902
RV101
RV201
RV301
RV401
RV41
RV601
RV701
RV801
RV901
RV902
TP1
TP101
TP201
TP202
TP21
TP301
TP302
TP401
TP402
TP41
TP701
TP801
TP901
A
B
C
D
E
F
G
1
2
3
4
TR-133B BOARD (SIDE A)
LV41
LV21
LV1
Adjustment procedure:
1.
Adjust temporarily
1
LV902 (PROMPT TUNE) on the
TR-133B board so that a video waveform appears on
the waveform monitor.
2.
Adjust
1
LV901 (PROMPT FREQ)/TR-133B board to
minimize the frequency response around 6 MHz.
3.
Switch the video signal generator signal to 10 STEP
signal.
––––––– This adjustment continues to next page. –––––––
6 MHz
4-7-3. RX PROMPT VIDEO Demodulation
Adjustment
Adjustment category:
C
Notes:
.
Perform this adjustment only after replacing IC903,
1
LV901 (PROMPT FREQ) or
1
LV902 (PROMPT
TUNE) on the TR-133B board.
Use a TRIAX cable of 300 m or less for this adjustment.
.
The CA-590/590P shall have been adjusted properly.
Measuring instruments:
Waveform monitor, Video
signal generator (sweep signal,
10 STEP signal)
Extended board:
TR-133B board
Preparation:
n
The RX PROMPTER output terminal must be output from
RET-2/PROMPTER BNC on the CCU rear panel.
.
S2 (TX
←
REM
→
RX)/TR-133B board (CCU)
→
“RX”
.
S301/DM-139B board (CA-590/590P)
→
“TX”
.
S1 (Cable Length)/DM-140 board (CCU)
→
“F” (AUTO)
.
Input sweep signal from the video signal generator to the
PROMPTER terminal on the CA-590/590P rear panel.
Measuring instrument:
RET-3/PROMPTER terminal
(CCU rear panel)
Adjustment point:
1
LV901 (PROMPT FREQ)/
TR-133B board
1
LV902 (PROMPT TUNE)/
TR-133B board