JVC TK-1280E - Page 41

TK-1280E/-N180E/-1281EG
4. Adjusting the signal system
[No] tem | tnstrument ie saul
1 | MAX GAIN
VOLTAGE
adjustment
IN DOOR
W/B
VOLTAGE
adjustment
CCD OUT
adjustment
OdB GAIN
adjustment
2
3
4
5
DL YH GAIN
adjustment
Digital
voltmeter
Digital
voltmeter
Oscilloscope,
Gray scale
Oscilloscope,
Gray scale
Oscilloscope,
Gray scale
TP-1
(MAX GAIN)
{CDS/TG
board]
TP-101
(R CTL)
TP- 102
(B CTL)
[FEATURE
board]
TP-1
(CCD OUT)
(IMEGER
board]
TP-3 (Y out)
(CDS/TG
board]
TP -1
(Y1 - YQ)
(MAT /ENC
board]
R5 (MAX GAIN)
[(CDS/TG board]
R141 (RCTL)
R142 (B CTL)
(FEATURE board]
Lens iris
R8 (0dB GAIN)
{CDS/TG board]
R46
(DL YH GAIN)
[MAT /ENC
board]
. Connect a digital voltmeter to TP -~ 1
(MAX GAIN).
. Set the voltage to 4.5V with RS
(MAX GAIN).
. Connect a digital voltmeter to TP— 101 (R
CTL).
2. Set the TP— 101 voltage to 4.00V with
R141 (RCTL).
. Connect the digital voltmeter to TP — 102
(B CTL).
. Set the TP- 102 voltage to 4.20V with
R142 (BCTL).
. Connect an oscilloscope to TP —- 1
(CCD OUT).
2. Set the CCD OUT to 170mVp-p (TK-1280),
200 mVp-p (TK1180) with the lens iris VR.
1170mVoOB - W
@ CCD OUT: 170mvV (TK-1280), 200mV (TK-1 180)
1. Connect an oscilloscope to TP-3 (Y OUT).
2. Adjust the voltage to 200mV with R8
(OdB GAIN).
200mVp-p
@ CCD OUT: 170mV (TK-1280), 200mvV (TK-1180}
1. Connect an oscilloscope to TP - 1
(Y1 - YO).
2. Use R46 (DL YH GAIN) to adjust the
waveform so that it may become fiat.
(No. $647) 15