Preliminary Display Adjustments Setup - HP 8568B Performance Tests And Adjustments Manual

Procedure
X and Y Deflection
Amplifier Pulse
Response Adjustments
Note
3. Preliminary Display Adjustments (SN 3004A and Above)
1. Connect a 1O:l (10 MQ) divider probe to the oscilloscope's channel
1 input and a 1O:l divider probe to the channel 4 input.
2. On the oscilloscope, press (RECALL) (CLEARI) to perform a soft reset.
channel 1, and use the front-panel knob to select a 10: 1 probe.
4. Select channel 4, and use the front-panel knob to select a IO:1
probe.
5. Press ml.
the
6. Connect channel 1 probe to the oscilloscope's rear panel
PROBE COMPENSATION AC CALIBRATOR OUTPUT connector.
Press Adjust the channel 1 probe for an optimum
).
SCALE
square wave display on the oscilloscope.
7. Connect the channel 4 probe to the oscilloscope's rear panel
PROBE COMPENSATION AC CALIBRATOR OUTPUT connector.
Press Adjust
[ - ].
AUTO SCALE
square wave display on the oscilloscope.
Each probe is now compensated for
is connected. Do not interchange probes without recompensating.
8. Connect the channel 1 IO:1 divider probe to AlA2TP204, and
the channel 4 probe to AlA2TP205, as shown in Figure 3-23.
Connect the probe ground leads to AlA2TP106. See Figure 3-24
and Figure 3-25 for the location of the assemblies and test points.
Figure 3-23. Preliminary Display Adjustments Setup
9. Remove the cover over A3 Digital Storage Section and remove
PC board (HP part number 85662-60088) into
Figure 3-24 for the location of the A3A2 assembly.
the
channel 4 probe for an optimum
the
oscilloscope input to which it
W
the
Adjustments 3-53