LA76835NM
VIF Block Input Signals and Test Conditions
1. Input signals must all be input to the PIF IN (pin 79) in the Test Circuit.
2. All input signal voltage values are the levels at the VIF IN (pin 79) in the Test Circuit.
3. Pin 34 = 5V
4. Signal contents and signal levels.
Input signal
SG1
Waveform
45.75MHz
CW
Conditions
SG2
42.17MHz
CW
SG3
41.25MHz
CW
SG4
Frequency variable
CW
SG5
45.75MHz
87.5% Video Mod.
10-stairstep wave
(Subcarrier: 3.58MHz)
SG6
5. Before measurement, adjust the DAC as follows.
Parameter
Video
Level DAC
Test point
56
Input signal
SG6, 80dBµ
45.75MHz
fm = 15kHz, AM = 78%
Adjustment
Set the output level at pin 56 as close to 1.4Vp-p as possible.
No.7962-11/50