Attenuator Compensation Ajustments - HP 54501A Service Manual
100 mhz digitizing oscilloscope
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Also See for 54501A:
- Programming reference manual (386 pages) ,
- Operation reference (146 pages) ,
- Service manual (90 pages)
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HP 54501A ADJUSTMENTS
4-15 . Attenuator Compensation Adjustments
Equipment Required :
Square Wave Generator . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HP 8116A
50 Ohm Termination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HP 101000
BNC Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HP 10503A
Procedure :
1 .
Connect Square Wave Generator to HP 54501A Channel
1
input, using the 50-ohm termina-
tion and BNC cable .
2.
Set Square Wave Generator for output of 100 Hz with approximately 300 mVp-p amplitude .
3.
AUTOSCALE and then set channel 1 vertical sensitivity to 50mV/div .
4.
Adjust System Board Assembly R315 for displayed signal with flat top and baseline . Refer to
figure 4-4 for adjustment location .
5 .
Connect Square Wave Generator to HP 54501A Channel 4 . AUTOSCALE .
6 .
AUTOSCALE and set channel 4 vertical sensitivity to 50mV/div .
7 .
Adjust System Board Assembly R15 for flat top and baseline on displayed signal .
8 .
Connect Square Wave Generator to Channel 2 and increase output to approximately 1 V
9 .
AUTOSCALE and set channel 2 vertical sensitivity to 200 mV/div .
10 .
Adjust System Board Assembly R215 for flat top and baseline on displayed signal.
11 .
Connect Square Wave Generator to Channel 3 .
12 .
AUTOSCALE and set channel 3 vertical sensitivity to 200 mV/div .
13 . Adjust System Board Assembly R115 for flat top and baseline on displayed signal .
14.
Connect Square Wave Generator to Channel 1 . AUTOSCALE .
15.
AUTOSCALE and set channel 1 vertical sensitivity to 200 mV/div .
16.
Adjust System Board Assembly C305 for flat top and baseline on displayed signal .
17 .
Connect Square Wave Generator output to Channel 2.
18 .
AUTOSCALE and set channel 2 vertical sensitivity to 200 mV .div .
19 .
Adjust System Board Assembly C202 for flat top and baseline on displayed signal .
20 .
Connect Square Wave Generator to Channel 3 .
4-10
P-P .
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