To Test Trigger Sensitivity - HP 54520 Series Service Manual

To test trigger sensitivity
To test trigger sensitivity
This test checks channel and external triggers for sensitivity at rated bandwidth.
Specification dc to 100 MHz 100 MHz to 500MHz
Internal 0.5 div 1.0 div
External 0.0225 x signal range 0.045 x signal range
Auxiliary dc to 50 MHz, 250 mVp.p
Equipment Required
Equipment Critical Specifications Recommended
Model/Part
Signal Generator 100 and 500 MHz, 30-80 mVrms output HP 8656B
Power Splitter outputs differ by <0.15 dB HP 11667A
Termination BNC feedthrough, 50 Q HP 10100C
Cable Type N (m) 24 inch HP 11500B
Cable 50 Q BNC 36 inch HP 10503A
Adapter Type N (f} to BNC (m) HP 1250-0077
Adapter Type N {m) to BNC {m) HP 1250-0082
Adapter Type N (m) to BNC {f) HP 1250-0780
Adapter BNC tee (mi(f(f) HP 1250-0781
Internal Trigger Test
Perform this test on all vertical channels.
Press Recall ,thenpress Cir to set the oscilloscope to default conditions.
Set the following parameters
Menu (hardkey) Function/Parameter Setting
Vertical 1 on
{channel key) others off
{all} (sensitivity) 200 mV/div
{input R) 50 0C
Horizontal {time/div) 5 ns/div
(Setup) (mode) repetitive
Display (mode) avg
# of avg 16
(graticule) grid
With an N cable and N-to-BNC adapter, connect the signal generator to the channel 1
input.
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