Performance Tests
1–52
TDS 500D, TDS 600C, TDS 700D & TDS 714L Performance Verification and Specifications
m. Add the first CH1 to CH3 (AX1 on some TDS models) skew measure-
ment to the second CH1 to CH3 skew measurement and divide the result
by 2. Use Table 1–5.
n. Add the first CH1 to CH4 (AX2 on some TDS models) skew measure-
ment to the second CH1 to CH4 skew measurement and divide the result
by 2. Use Table 1–5.
o. Check against limits: CHECK that the largest of the three results from
steps l, m, and n is between –100 ps and + 100 ps for the TDS600C or
between –50 ps and + 50 ps for the TDS500D, TDS694C, TDS700D,
and TDS714L.
p. Enter time on the test record.
Table 1–5: Delay between channels worksheet
Coupling
First
measurement
Second
measurement
Add first and
second
measurements
Divide sum
by 2
CH1 to CH2
skew
CH1 to CH3
skew
CH1 to CH4
skew
3. Disconnect the hookup: Disconnect the cable from the generator output at
the input connectors of the channels.
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