Technical data

50 4000 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 within - 3.0 dB. Record
the result in the Performance Test Record (see page 61).
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.
response(dB) = 20 log
10






mV 211.2mV/ 210.4
mV 185.3 / mV 161.6
= -1.16 dB