Testing Performance 2
5000 Series Oscilloscopes Service Guide 45
4 Verify the trigger sensitivity at maximum frequency for
trigger range of 8.0 V.
a Press the Mode/Coupling key, press the External softkey,
then press the Range softkey and use the Entry knob to set
the range to 8.0 V.
b Adjust the signal generator output for reading on the
power meter of 625µW. (500mV
pp
= 176.78mV rms, Power =
Vin
2
/50Ω = 176.78 mV
2
/50Ω = 625µW.)
c Check for stable triggering and adjust the trigger level if
necessary. Triggering is indicated by the Trig’d indicator at
the top of the display. When it is flashing, the oscilloscope
is not triggered. When it is not flashing, the oscilloscope is
triggered.
d Record the results as Pass or Fail in the Performance Test
Record (see page 48).
Test External Trigger Sensitivity (4-channel models)
The following test is optional because External Trigger
Sensitivity is a characteristic, not a specification.
This test applies to 4-channel models only.
Verify the external trigger sensitivity at this setting:
• 100 MHz, 500 mV
pp
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