Trigger Sensitivity Test - HP 54501A Service Manual

3-7. TRIGGER SENSITIVITY TEST
Specification :
Equipment Required:
Procedure :
5 mV/div do - 20 MHz 0.1 X full-scale
20 MHz - 100 MHz 0 .25 X full-scale
All other do - 20 MHz 0.05 X full-scale
20 MHz - 100 MHz 0 .125 X full-scale
1 .
Connect Signal Generator to HP 54501A Channel 1 input.
2 . Set Channel 1 vertical sensitivity to 5 mV/div .
a.
Press front-panel CHAN key .
b.
Select 5 mV/div with knob, softkey, or ENTRY keys .
4.
Set HP 54501 A DISPLAY menu for 2048 averages .
a .
Press front-panel DISPLAY key.
b .
Select avg with softkey .
c .
Enter 2048 with knob or ENTRY keys .
NOTE
The display of the HP 54501A is improved by using averaging
mode, however, the rate of display refresh is slowed con-
siderably because of the averaging process.
HP 54501A PERFORMANCE TESTS
Signal Generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HP 8656B
Type N Cable . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HP 11500B
3 .
Set Signal Generator for 10 MHz output, adjusting output level for approximately 8 divisions
of vertical deflection on HP 54501 A . Use HP 54501A AUTOSCALE as necessary .
5.
Press HP 54501A front-panel TRIG key and adjust trigger level as necessary for stable
display .