MC44BS373CADR2 datasheet(20/52 Pages) FREESCALE

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MC44BS373CA Data Sheet

Characterization Measurement Conditions

Unweighted Video Signal to Noise

Same as above with CCIR filter disabled

Same as above

Video Differential Phase

Video: 5-step grey scale, 1 Vp-p

No audio signal

This is measured using a Rohde & Schwarz

AMFS UHF demodulator in B/G (using a

CCIR Rec. 567 weighting network),

100-kHz to 5-MHz band with sound trap

and envelope detection, and a Rohde &

Schwarz UAF video analyzer.

On line CCIR 330, the video analyzer DP measure consists of calculating

the difference of the chroma phase at the black level and the different

chroma subcarrier phase angles at each step of the grey scale. The

largest positive or negative difference indicates the distortion.

The video analyzer method takes the worst step from the first 4 steps.

Video Differential Gain

Video: 5-step grey scale, 1 Vp-p

No audio signal

This is measured using a Rohde & Schwarz

AMFS UHF demodulator in B/G (using a

CCIR Rec. 567 weighting network),

100-kHz to 5-MHz band with sound trap

and envelope detection, and a Rohde &

Schwarz UAF video analyzer.

On line CCIR 330 shown below, the video analyzer DG measure consists

of calculating the difference of the chroma amplitude at the black level

and the different amplitudes at each step of the grey scale. The largest

positive or negative difference indicates the distortion.

The video analyzer method takes the worst step from the first 4 steps.

Video Modulation Depth

No audio signal

Video: 10-step grey scale

This is measured using an HP8596E spectrum analyzer with a TV trigger

option, allowing demodulation and triggering on any specified TV line.

The analyzer is centred on the maximum peak of the video signal and

reduced to 0 Hz span in linear mode to demodulate the video carrier

The modulation depth is calculated as (A – B) / A x 100 in percent.

Same measurement method for L standard, with inverted video.

Table 24. Measurement Conditions (continued)

Device and Signal Set-Up

Measurement Set-Up

Diff Phase =

× 100%

Phase at position 0

Largest positive or negative difference

5-Step Grey Scale with Chroma Subcarrier Superimposed

(Not to Scale), Line CCIR 330

Diff Gain =

× 100%

Amplitude at position zero

Largest positive or negative difference

A ( 6-10mV)

B (0.6 - 3mV)

TV Line Demodulated by Spectrum Analyzer—BG Standard

A(mV)

B(mV)

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