4-25
CCU-TX7 (E)/V1
Note :
After this adjustment is completed, set the switches
as follows.
• S1 (AUX/PROMPT)/YD-25 board (CA-TX7/TX7P)
→
"PROMPT"
• S6 (AUX/PROMPT)/YD-25 board (CA-TX7/TX7P)
→
"PROMPT"
• Connect CN7 and CN3 on the CT-181 board. (CCU-TX7/
TX7P)
• S2002 (TX
↔
RX)/CT-181 board (CCU-TX7/TX7P)
→
"TX"
4-6-3. RX PROMPT VIDEO RF AGC
Adjustment
Note :
When performing this adjustment, the TRIAX cable
50 m to 150 m should be used.
Adjustment of CA-TX7 /TX7P must be completed.
Equipment
:
Oscilloscope,
Video signal generator (10 STEP signal)
To be extended :
CT-181 board
Preparation :
• S1 (AUX/PROMPT)/YD-25 board (CA-TX7/TX7P)
→
"AUX"
• S6 (AUX/PROMPT)/YD-25 board (CA-TX7/TX7P)
→
"AUX"
• Connect CN8 and CN3 on the CT-181 board. (CCU-TX7/
TX7P)
• S2002 (TX
↔
RX)/CT-181 board (CCU-TX7/TX7P)
→
"RX"
• S1 (MODE AUTO/MAN)/YD-26 board (CCU-TX7/TX7P)
→
"AUTO"
• Input the 10 STEP (sub-carrier :
ON) signal of the video
signal generator to PROMPTER connector on the CA-TX7/
TX7P rear panel.
Test point :
PROMPTER VIDEO IN connector
(CCU-TX7/TX7P rear panel)
Note : To measure the video level, make 75
Z
termination on the waveform monitor side.
Adjusting point :
1
RV22 (RF AGC DLY)/CT-181 board
Adjustment Procedure :
• Turn
1
RV22 (RF AGC DLY)/CT-181 board fully in the
clockwise direction, and then turn it slowly in the
counterclockwise direction so that the V SYNC position
of waveform becomes flat. (Take care not to over-turn.)
CT-181
MIC GAIN
PANEL
R TALLY
CONTACT
POWER
DC24V
TTL
CT-181 Board
(A SIDE)
G TALLY
CONTACT
POWER
DC24V
REMOTE
LOCAL
CONTROL MODE
NORMAL
SLAVE
TTL
CH-1
CH-2
NORM
MIN
MAX
NORM
MIN
MAX
R TALLY
S1002
SW1001
MIC 2 GAIN
MIC 1 GAIN
SW1000
S1004
S2002
LV3
LV2
RV20
RET DIV
RV19
RET MIX
RV22
RF AGC DLY
CV1
RET FREQ
RV21
RV23
PROMPT LEVEL
PROMPT TUNE
PROMPT FREQ
S1000
S2012
S2014
S2013
CONTACT
CONTACT
POWER
POWER
DC24V
DC24V
TTL
TTL
R TALLY
G TALLY
G TALLY
NORM
SLAVE
CONT MODE
S1001
PANEL
SELECT
RS232C-2
IF BOARD
RX
TX
PROMPT
S2011
LOCAL REMOTE
CN7
CN2
CN3
CN8
PROMPT RF RX
PROMPT RF TX
RET RF
PROMPT RF
PROMPT DEV
TP2006
TP1000
E1000
E1001
E12
E13
E11
E16
TP1002
TP21
TP22
TP23
TP1001
TP2000
TP20
TP2005
E2000
TP2003
TP2002
TP2004
TP2001