Agilent Technologies 54657A Specifikace stáhnout pdf (Strana 109)

External Trig

Sensitivity

6 Verify the external trigger sensitivity at 500 MHz, 150 mV p-p and at

100 MHz, 75 mV p-p.

a Press Source , then press the Ext softkey.

bc Press External Trigger

, then toggle Input softkey to 50 .

c Press 1

then toggle Input softkey to 50 .

d Using the power splitter, connect one power splitter to output to the

channel 1 input and the other power splitter output to the power

sensor.

e Set the power meter Cal Factor to the 500 MHz value from the chart

on the power sensor.

f Set signal generator frequency to 500 MHz and adjust the output

amplitude to achieve a power meter reading of 0.075 mW. (This

corresponds to 150 mV p-p.)

g Set Time/div to 1 ns/div.

h Disconnect power meter from the power splitter and connect the

power splitter output to External Trigger Input.

i Check for stable triggering, adjusting trigger level if necessary.

j Record results in the Performance Test Record as Pass or Fail.

If the test fails, refer to "Troubleshooting the Oscilloscope" on page

4-32.

k Change the signal generator frequency to 100 MHz at output amplitude of

75 mV p-p, as measured with the 54615B/16B/16C (channel 1). Press

Voltage , then the softkey Vp-p

l Set Time/div to 10 ns/div.

m Check for stable triggering, adjusting trigger level if necessary.

n Record results in the Performance Test Record as Pass or Fail.

If test fails, refer to "Troubleshooting the Oscilloscope" on page 4-32.

Service

Verifying Oscilloscope Performance

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Agilent Technologies 54657A Specifikace Strana 109