Agilent Technologies 1680 series, Service Manual

Page: 52 / 174

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Chapter 3: Testing Performance
To test the multiple-clock state acquisition
b On the oscilloscope, select [Shift] + width: channel 1, then select
[Enter] to display the data signal pulse width (+ width (1)).
c If the pulse width is outside the limits, adjust the pulse generator
channel 2 width until the pulse width is within limits.
Check the setup/hold with single clock edges, multiple
clocks
The following setup/hold combinations will be tested.
Setup/Hold Combinations
1 Disable the pulse generator channel 1 COMP (LED off).
2 Using the Delay mode of the pulse generator channel 1, position the pulses
according to the setup time of the setup/hold combination selected,
+0.0 ps or
−
100 ps as measured on the oscilloscope:
a On the Oscilloscope, select [Define meas] Define
∆
Time - Stop edge:
rising, Edge number 2.
Test
Combination Setup/Hold
Times Setup/Hold
Window Sample Position
(in middle of Window)
1 5.0/-2.0 ns 3.0 ns -3.5 ns
2 -1.5/4.50 ns 3.0 ns +3.0 ns