To Test The Time Interval Accuracy - HP 16555A Service Manual

To test the time interval accuracy

Testing the time interval accuracy does not check a specification, but does check the
following:
•
125 MHz oscillator
Multicard modules must be reconfigured as one-card modules for this test.
This test verifies that the 125 MHz timing acquisition synchronizing oscillator is
operating within limits.
Equipment Required
Equipment Critical Specifications
Pulse Generator 100 MHz 3.5 ns pulse width, <600 ps rise time
Accuracy ≤ (5)(10
Function Generator
SMA Cable
Adapter BNC(m)-SMA(f)
BNC Test Connector,
6x2
Set up the equipment
Turn on the equipment required and the logic analyzer. Let them warm up for
1
30 minutes if you have not already done so.
Set up the pulse generator according to the following table.
2
Pulse Generator Setup
Channel 1 Period
5 µs
Delay: 0 ps
Width: 2.5 µs
High: −0.9 V
Low: −1.7 V
COMP: Disabled
(LED off)
−6
) × frequency
Mode EXT TRIG
TRIG Slope: Positive
THRE: 1.0 V
Recommended
Model/Part
HP 8131A Option 020
HP 3325B Option 002
HP 8120-4948
HP 1250-2015
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