參數(shù)資料
型號(hào): TDA5666-5
廠商: SIEMENS A G
元件分類: 消費(fèi)家電
英文描述: Video Modulator for FM-Audio
中文描述: SPECIALTY CONSUMER CIRCUIT, PDIP18
文件頁(yè)數(shù): 16/22頁(yè)
文件大?。?/td> 1020K
代理商: TDA5666-5
Semiconductor Group
16
TDA 5666-5
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
vid
= 1 Vpp is connected to the video input.
1) Modulation depth
m
D/N
for negative modulation: pin 12 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 12 to ground, range peak
white value – sync level in relation to range zero reference – peak white value gives
m
D/P
.
Measuring:
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