4-27
CCU-TX7 (E)/V1
4-7-3. PGM Deviation Adjustment
Equipment
:
Spectrum analyzer, Oscilloscope,
Audio generator
To be extended :
AA-90 board
Preparetions :
1. S2081 (0 dB/
_
20 dB)/AA-90 board (CCU-7X7/TX7P)
→
"0 dB"
2. Input the 350 Hz sine wave signal of the audio generator
to pin 94 (X), pin 93 (Y) and pin 92 (GND)/extension
board (AA-90 board).
• Fig-2 (Refer to 4-1-5. Audio connection.)
3. Adjust the output level of audio generator so that the level
at TP44 (GND : E12)/AA-90 board is 220 mV p-p.
Test point
:
TP5 (GND : E1)/AA-90 board
Adjustment point :
1
RV81 (PGM DEV)/AA-90 board
Specifications
:
A = B = 7.0
±
0.4 kHz
A
B
CENT FREQ : 4.3 MHz
FREQ SPAN : 20 MHz
Wave form image
4-7-2. INCOM Deviation Adjustment
Equipment
:
Spectrum analyzer, Oscilloscope,
Audio generator
To be extended :
AA-90 board
Preparations :
1. INTERCOM CH1/CH2 switch (CA-TX7/TX7P side panel)
→
"CH-1"
2. INTERCOM LINE (CH1/PR1V/CH2)
(CCU-TX7/TX7P) front panel
→
"CH-1 or CH-2"
3. S2002 (2W/RTS/4W)/AA-90 board (CCU-TX7/TX7P)
→
"4W"
4. Input the 400 Hz sine wave signal of the audio generator
to pin 84 (X), pin 83 (Y) and pin 82 (GND)/extension
board (AA-90 board).
• Fig-2 (Refer to 4-1-5. Audio connection.)
5. Adjust the output level of audio generator so that the level
at TP43 (GND : E10)/AA-90 board is 220 mVp-p.
Test point
:
TP3 (GND : E1)/AA-90 board
Adjustment point :
1
RV41 (INCOM DEV)/
AA-90 board
Specifications
:
A = B = 6.0
±
0.2 kHz
CENT FREQ : 3.6 MHz
FREQ SPAN : 20 MHz
Wave form image
A
B
AA-90
PGM IN
MIC 1 LEVEL
MIC 2 LEVEL
MIC TEST
LEVEL IND
INTER COM
CLEAR
COM
( )
2W
RTS
4W
RTS
CLEAR
COM
OFF
CH-2
CH-1
0dB
–20dB
0dB
–20dB
0dB
–20dB
S2081
PGM IN
TP10
TP13
TP9
TP15
TP12
S201
MIC-1-LEV
S301
MIC-2-LEV
S2004
MIC TEST
INCOM
LEV
RV401
RV101
RV81
PGM
DEV
INCOM
DEV
S2006
RTS 200
OHM
OFF
ON
S2003
INCOM MODE
2CH
1CH
RV41
RV301
MIC 2
LEV
RV201
MIC 1
LEV
INCOM SELECT
S2002
RTS/CLEAR-COM
S2005
RV2000
SIDE TONE
LV1 3.0M
H CONT
LV21
2.5M CCU DATA
TONE TUNE
LV101
5.6M TUNE
T201
T301
T401
LV41
3.6M
LV61
4.3M
AA-90 Board
(A SIDE)
TP46
TP3005
TP3002
TP3004
TP3003
TP3001
TP43
TP7
TP2
TP5
TP6
E2
TP14
TP11
TP8
TP3
TP1
TP44
E12
E1
E11
E10
E3001
