44 2000/3000 X-Series Oscilloscopes Service Guide
2 Testing Performance
Then after converting the values from the power meter to Vrms:
15 The result from step 14 should be between +3.0 dB and -3.0 dB. Record the
result in the Performance Test Record (see page 53).
16 Move the power splitter from the channel 1 to the channel 2 input.
17 Turn off the current channel and turn on the next channel using the channel
keys.
18 Repeat steps 3 through 17 for the remaining channels, setting the parameters
of the channel being tested where appropriate.
mV211.2mV/ 210.4
mV 185.3 / mV 161.6
= -1.16 dB