Symmetricom 59552A, User Manual

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Chapter 3 Operational Verification
59552A/59553A Operational Verification
User’s Guide 3-5
Digital Out (1 PPS) and Analog (IRIG) Out Waveform
Tests
1 Set the HP 33120A (the one that connects to the 59552A’s
Digital In (1 PPS)
input) to provide a 1 PPS signal by setting its
controls as follows:
a. Press Square Wave function key.
b. Press
Freq
key, then
Enter Number
key.
c. Using the appropriate number keys, enter in the value
1 Hz
.
d. Press the blue
Shift
, then
%Duty
key.
e. Press the
∨
(decrease) key until 20% is displayed.
f. Press
Ampl
key, then
Enter Number
key.
g. Enter in the value
5.0 Vpp
.
h. Press
Offset
key, then
Enter Number
key.
i. Enter in the value
2.5 V
.
2 Set the other HP 33120A to output a 1 kHz sine wave with a 1 Vp-p
amplitude by setting its controls as follows:
a. Press Sine Wave function key.
b. Press
Freq
key, then
Enter Number
key.
c. Using the appropriate number keys, enter in the value
1 KHz
.
d. Press
Ampl
key, then
Enter Number
key.
e. Enter in the value
1.0 Vpp
.
3 Set the Channel 2 input of the HP 54600B Oscilloscope to dc coupled,
vertical 1 Volt/div, sweep 10 µsec/div, and positive trigger.
4 Verify the presence of a 1 PPS signal on Channel 2.
5 Set the Channel 1 input of the HP 54600B Oscilloscope to dc coupled,
vertical 1 Volt/div, and sweep 100 msec/div.
6 Verify the presence of a 1 kHz sine wave on Channel 1.
7 Connect the next fiber-optic output of the 59552A to the 59553A and
repeat steps 4 and 6 until all 8 ports on the 59552A have been verified.