49
4) Look at the four 10 MHz outputs on the scope with 50 W
termination. The outputs should be sine waves with an amplitude
between 0.75 and 2 V peak-to-peak.
Phasemeter Check
This test checks the functionality of the FS700's phasemeter and
internal frequency synthesizer.
1) Use the frequency counter to measure the frequency of the
FS700's frequency output. Measure the output with the frequency
set to 10 MHz, 5 MHz, 100 kHz, 1 kHz, and 10 Hz. In all cases the
frequencies should be within 1 x 10
-5
of their setting. Record the
results.
2) Set the synthesizer to 100.1 kHz, 0.5 V pk-pk, and attach to the
FS700's OSC IN BNC.
3) Set the FS700's FREQUENCY OUTPUT to 100 kHz. Look at
the PHASE OUTPUT on the scope. The output should be a
positive sawtooth wave at 100 Hz going from 0 to +3.6 V (±300
mV). Read the FS700's front panel frequency offset reading. The
offset should read 1 ±0.1 x 10
-3
. Record the results.
4) Set the synthesizer to 99.9 kHz. The PHASE OUTPUT should
be a 100 Hz negative sawtooth going from 0 to -3.6 V (±300 mV).
Read the FS700's front panel frequency offset reading. The offset
should read -1 ± 0.1 x 10
-3
. Record the results.
****THIS COMPLETES THE PERFORMANCE TESTS****
