HP 75000 SERIES C - Page 145

OUTPUT Vxi ; It : PHAS :UNIT DEG"
OUTPUT Vxi ; It : PHAS : REF"
6. Set the counter display rate close to the "hold" position, then
reset the counter. Record the counter reading in nanoseconds (to
2 decimal places)
on the Performance Test Record in the space
for Zero-Phase Time-Reference.
7. Set the HP E1440A phase to -lo.
OUTPUT Vxi ; It : PHAS - 1 "
8. Reset the counter. Record the counter reading in nanoseconds
(to
2 decimal places) in the space for 1" Increment Time Interval.
9. Determine the time difference between the counter readings
,nd the Zero-Phase Time-Reference and record it in the Time
Difference column. This difference reperesents
lo at the test
frequency.
10. Set the
HP E1440A phase to -10".
OUTPUT Vxi ; 'I : PHAS - 10"
11. Reset the counter. Record the counter reading in the space for
10" Increment Time Interval.
12. Enter the time difference between the Zero-Phase Time-Reference
and this reading in the Time Difference column. This represents
10' at the test frequency.
13. Set the HP
E1440A phase to -100'.
OUTPUT Vxi;":PHAS -100"
14. Reset the counter. Record the counter reading in the space for
100" Increment Time Interval.
15. Enter the time difference between the Zero-Phase Time-Reference
and this reading in the Time Difference column. This represents
100' at the test frequency.
Performance tests C-2 1
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