Agilent Technologies 1670G Series, Service Manual

Page: 108 / 224

Connect the logic analyzer
Using the N-to-BNC adapter and the BNC cable, connect the signal generator output
to the channel 1 input of the oscilloscope.
Acquire the data
1
Test the upper bandwidth trigger sensitivity.
a Set the signal generator to provide a 225 MHz signal with 70 mV rms amplitude.
b Press the blue shift key, then press the Run key. Press the Trigger key.
c If the Auto triggered message appears (oscilloscope doesn’t trigger), move the cursor
to the Level field and use the RPG knob to adjust the trigger level until the
oscilloscope triggers (Auto triggered message goes away).
d If the oscilloscope triggers, record a pass in the performance test record.
e Press Stop to halt the acquisition. Read the Vp-p field and record the voltage in the
performance test record.
2
Test the lower bandwidth trigger sensitivity.
a Use the RPG knob to dial in s/Div of 20 ns.
b Set the signal generator to provide a 50 MHz signal with 35 mV rms amplitude.
c Press the blue shift key, then press the Run key.
d If the oscilloscope doesn’t trigger, move the cursor to the Level field and use the RPG
knob to adjust the trigger level until the oscilloscope triggers (Auto triggered message
goes away).
e If the oscilloscope triggers, record a pass in the performance test record.
f Press Stop to halt the acquisition.
3
Remove the signal generator output from channel 1 and connect the BNC cable to
channel 2. Repeat from "Set up the logic analyzer" for channel 2, replacing channel 1
with channel 2 where appropriate.
Testing Performance
To test the trigger sensitivity (oscilloscope)
3–84