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BE-3110
4.2 Adjusting the Clamp Voltage
1. Connect the digital voltmeter to TP1 of the RF ASSY as shown
in Connection Diagram 1.
2. Adjust control VR9 (RV9) of the RF ASSY so that the voltage
value on the digital voltmeter becomes within DC+2.7 to 2.9V.
4.3 Adjusting the Video Output
1. Connect the devices as shown by the dotted in Connection
Diagram 2.
2. Set the devices as follows.
¶ Oscilloscope
¶ Video SG
Video SG
All white signal (1 Vp-p/75Ω)
22
Video SG
Video in
TP1
BE-3110
Fig. 4-2 Connection Diagram 1
0.1 V/div
5 µs/div
H-SYNC TRG.
All white signal (1 Vp-p/75Ω)
Video in
Fig. 4-3 Connection Diagram 2
Fig. 4-4 Video Adjustment Waveform Diagram
Digital voltmeter
3. Adjust the oscilloscope using the VARIABLE level knob, etc.
so that the p-p value of the signal is at the 6th mark on the
oscilloscope screen. (Refer to the video adjustment waveform
diagram in Fig. 4-4.)
4. Connect the devices as shown by the solid line in Connection
Diagram 2.
5. Adjust control VR8 (RV8) of the RF ASSY so that the p-p value
(within 0.97 to 1.03 Vp-p) set in step 3 is obtained.
BE-3110
Video out
1 Vp-p/75Ω
V: 5µs/div
Oscilloscope
Terminated at 75Ω
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