Calibration Procedures 1
Keysight U3606B Service Guide 53
6 Configure the oscilloscope as follows:
a Set the time/div range to 5 ms/div.
b Set the oscilloscope to acquire every single sample at the maximum
sampling rate but retain only the minimum and maximum values in a
sampling region.
c Set a 20 MHz cut-off frequency for better high frequency cut-off.
d Enable AC coupling.
e Enable auto-triggering.
7 Allow the oscilloscope to run for a few seconds to generate enough
measurement points.
8 Obtain the maximum peak-to-peak voltage measurement as indicated in the
oscilloscope. Divide the value by 10 to get the constant voltage peak-to-peak
noise measurement. The result should not exceed 0.03 V
pp
as shown in
Table 1-15.
9 Disconnect the oscilloscope and connect an RMS voltmeter in its place. Do
not disconnect the 50 Ω feed-thru termination.
10 Configure the RMS voltmeter as follows:
a Set the high-pass filter to 10 Hz.
b Enable AC coupling.
11 Obtain the maximum RMS voltage measurement as indicated in the RMS
voltmeter. Divide the value by 10 to get the constant voltage RMS noise
measurement.
12 Repeat step 3 to step 11 for the S2 (8 V/3 A) and S2m (1000 mV /3 A) ranges.
All the result should not exceed 0.002 V
rms
as shown in Table 1-16.
Table 1-15 Constant voltage peak -to-peak noise verification test
Output voltage Range (parameter) Error from nominal 1-year
30 V with 30 Ω S1 (30 V)
±0.03 V
pp
8 V with 2.67 Ω S2 (8 V)
±0.03 V
pp
1 V with 0.33 Ω S2m (1000 mV)
±0.03 V
pp
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