Technical data

56 7000 Series Oscilloscopes Service Guide
2 Testing Performance
2 Set up the oscilloscope.
a Press the Save/Recall key, then press the Default Setup
softkey.
3 Change the signal generator output frequency to 500 MHz.
4 Set the power meter Cal Factor % to the appropriate value
(500 MHz) on the calibration chart on the power sensor. If
necessary, do a linear interpolation if a 500 MHz factor is not
included in the power meter’s calibration chart.
5 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.)
6 Press the Trigger Edge key, then press the Source softkey to
set the trigger source to External.
7 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.
8 Record the results as Pass or Fail in the Performance Test
Record (see page 57).
If the test fails, see the “Troubleshooting” chapter. Then
return here.
7000 service guide.book Page 56 Thursday, October 16, 2008 12:18 PM