tda5670-5x ETC-unknow, tda5670-5x Datasheet - Page 15

• Manufacturer Part Number: tda5670-5x
• Description: Video Modulator Fm/am-audio With Pll-output
• Manufacturer: ETC-unknow

Test Circuit 5
Description of the Measurement Configuration to Measure the Video and/or Noise
in Audio
Calibration:
Measuring:
Semiconductor Group
AF-signal of
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.
1) The AF-signal is switched off and the FuBK-video signal is connected to the video
input with
level is measured as ratio
2) AF- and video signal 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
.
V
vid
f
= 1 Vpp. The audio level in relation to the AF-reference calibration
= 1 kHz, corresponding with a nominal deviation of 30 kHz, is
a
V/A
.
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TDA 5670-5X