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參數(shù)資料
| 型號： | MGM3000X |
| 廠商： | SIEMENS A G |
| 元件分類： | 消費家電 |
| 英文描述： | Video Modulator for FM/AM-Audio |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PDSO20 |
| 文件頁數(shù)： | 17/23頁 |
| 文件大?。?/td> | 1016K |
| 代理商： | MGM3000X |
MGM 3000X
Semiconductor Group
17
Test Circuit 5
Description of the Measurement Configuration to Measure the Video and or Noise
in Audio
Calibration:
AF-signal of
f
= 1 kHz, corresponding with a nominal deviation of 30 kHz, is connected
to the audio input, and the demodulated AF-reference level at the audio measurement
device is defined as 0 dB. No video signal is present.
Measuring:
1. The AF-signal is switched off and the FuBK-video signal is connected to the video
input with
V
Video
= 1 Vpp. The audio level is relation to the AF-reference calibration
level is measured as ratio
a
V/A
.
2. AF-and video signals are switched off. The noise ratio in relation to the AF-reference
calibration level is measured as signal-to-noise ratio in the audio signal
a
N/A
.
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