Technical data

38 U4154A Logic Analyzer Service Guide
3 Testing U4154A Performance
Verify and adjust the pulse generator DC offset
1 From the oscilloscope’s main menu, choose Measure >
Markers....
2 In the Markers Setup dialog, select the Manual Placement
mode; then, set marker “Ay” to 475 mV, and set marker
“By” to 725 mV.
3 Observe the waveforms on the oscilloscope display. If they
are not centered within the “Ay” and “By” markers, adjust
the pulse generator’s Channel 2 OFFSET until the
waveforms are centered as well as possible.
(The resolution of the 8133A pulse generator is 20 mV,
and the resolution of the 81134A pulse generator is 10
mV.)