Technical data

3 Calibration
36 U2761A Service Guide
7 Use the DMM to perform the AC voltage measurement at
the output terminal for each setup shown in the table
below.
8 Enter the measured value to the U2761A as described in
“Calibration Procedure” on page 30.
1 Calibration constant is stored after completing this setup.
9 Proceed to AC amplitude flatness (–20 dB range)
adjustment or exit the calibration mode when necessary.
Table 3-16 Configuration for 50% pulse AC amplitude adjustment
U2761A DMM
Setup Function Period Amplitude Lower margin Measurement Upper margin
29 50% Pulse 1.00000 ms 44 mVrms 41.8 mVrms Vrms 46.2 mVrms
30 50% Pulse 1.00000 ms 90 mVrms 85.5 mVrms Vrms 94.5 mVrms
31 50% Pulse 1.00000 ms 110 mVrms 102.3 mVrms Vrms 117.7 mVrms
32 50% Pulse 1.00000 ms 900 mVrms 837 mVrms Vrms 963 mVrms
33 50% Pulse 1.00000 ms 1.100 Vrms 1.023 Vrms Vrms 1.177 Vrms
34
1
50% Pulse 1.00000 ms 4.500 Vrms 4.185 Vrms Vrms 4.815 Vrms