MC44BS374T1D-R2 datasheet(19/34 Pages) FREESCALE

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Characterization Measurement Conditions

MC44BS374T1/374T1A Advance Information

Video Differential Gain

Video: 5 step Grey Scale- 1Vpk-pk.

No Audio signal

This is measured using a Rohde &

Schwarz AMFS UHF Demodulator in B/G

(using a CCIR Rec. 567 weighting

network, 100kHz to 5MHz 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 greyscale.

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 a 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 zero Hertz span in Linear mode to demodulate

the Video carrier.

The Modulation Depth is calculated as (A-B)/A x 100 in%

Picture to Sound ratio

No Video signal

No Audio Signal

PS” bit set to 0 and 1

Measure in dBc sound carrier in reference to picture carrier

(TVout_Ref) for PS” bit=0 (PS=12dB typical) and for PS” bit=1

(PS=16dB),

Table 7. Measurement Conditions

Device and Signals Set-up

Measurement Set-up

5-step Greyscale with Chroma subcarrier superimposed

(not to scale), line CCIR 330.

DIFF GAIN

* 100%

the amplitude at position 0

the largest positive or negative difference

A ( 6-10mV)

B (0.6 - 3mV)

TV Line Demodulated by Spectrum Analyzer-BG standard

A(mV)

B(mV)

Picture carrier

Sound carrier

+5.5Mhz

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

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