參數(shù)資料
型號(hào): MGM3000X
廠(chǎng)商: SIEMENS A G
元件分類(lèi): 消費(fèi)家電
英文描述: Video Modulator for FM/AM-Audio
中文描述: SPECIALTY CONSUMER CIRCUIT, PDSO20
文件頁(yè)數(shù): 18/23頁(yè)
文件大?。?/td> 1016K
代理商: MGM3000X
Semiconductor Group
18
MGM 3000X
Test Circuit 6
Description of the Measurement Configuration to Measure the Modulation Depth
for Positive and Negative Modulation
Calibration:
A zero reference signal with the TV measuring receiver is given to the video signal. A
video signal with
V
Video
= 1 Vpp is connected to the video input.
Measuring:
1. Modulation depth
m
D/N
for negative modulation: pin 14 open, range peak white
value-sync level in relation to range zero reference-sync level gives
m
D/N
.
2. Modulation depth
m
D/P
for positive modulation: pin 14 to ground, range peak white
value-sync level in relation to range zero reference-peak white value gives
m
D/P
.
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