is ground). Configure the SD020EVK to operate in the NTSC

colour bars, BIST mode. Configure the VM700T to make the

jitter measurement in the jitter FFT mode at the frame rate

with 1kHz filter bandwidth and Hanning window. Configure

the setup as shown in Figure 9. Switch the test equipment on

(from standby mode) and allow all equipment temperatures

stabilize per manufacturer’s recommendation. Measure the

jitter value after allowing the instrument’s reading to stabilize

(about 1 minute). Consult the VM700T Video Measurement

Set Option 1S Serial Digital Measurements User Manual

(document number 071-0074-00) for details of equipment

operation.

The VM700T measurement system’s jitter floor specification

actual components from 50Hz to 1MHz and 200ps +60%,

-30% of actual components from 1MHz to 10MHz. To obtain

the actual residual jitter of the CLC020, a root-sum-square

adjustment of the jitter reading must be made to compensate

for the measurement system’s jitter floor specification. For

example, if the jitter reading is 250ps, the CLC020 residual

jitter is the square root of (250

accuracy limits of the reading as given above apply.

10091710

FIGURE 9. Jitter Test Circuit

10091713

FIGURE 10. ECL-to-TTL/CMOS level converter/amplifer

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