Agilent Technologies 1670G Series Service Manual page 77

To test the time interval accuracy (logic analyzer)
Testing the time interval accuracy does not check a specification, but does check the
following:
•
125-MHz oscillator
This test verifies that the 125-MHz timing acquisition synchronizing oscillator is
operating within limits.
Equipment Required
Equipment Critical Specifications
Pulse Generator 150 MHz, 3.0 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
Timebase
Mode: Ext
Period: 25.000 ns
−6
) × frequency
Channel 1 Trigger
Divide: Divide ÷ 1
Mode: Square
Delay: 0.000 ns Ampl: 0.50 V
High: −0.90 V
Offs: 0.00 V
Low: −1.70 V
COMP: Disabled
(LED off)
Recommended
Model/Part
8133A Option 003
3325B Option 002
8120-4948
1250-2015
3–53