Technical data

3 Calibration
22 U2761A Service Guide
3 Set the U2761A to each output listed in the table below.
1 1 kHz: Based upon ±1% of setting ±5 mVpp (50 Ω) converted to Vrms for
High-Z.
100 kHz: Based upon ±0.2 dB (2.3%) of setting ±5 mVpp (50 Ω) converted to
Vrms for High-Z.
4 Compare the measured voltage with the test limits shown
in above table, and fill in Table 3- 6 using the following
equation.
Table 3 - 5 Configuration for AC amplitude verification
U2761A Measurement
Function Frequency Amplitude Nominal Error
1
Sine 1.00000 kHz 70 mVrms 70 mVrms ±4.236 mVrms
Sine 100.000 kHz 70 mVrms 70 mVrms ±5.146 mVrms
Sine 1.00000 kHz 700 mVrms 700 mVrms ±10.54 mVrms
Sine 100.000 kHz 700 mVrms 700 mVrms ±19.64 mVrms
Sine 1.00000 kHz 3.500 Vrms 3.500 Vrms ±38.54 mVrms
Sine 100.000 kHz 3.500 Vrms 3.500 Vrms ±84.04 mVrms
50% Ramp 1.00000 kHz 50 mVrms 50 mVrms ±3.387 Vrms
50% Ramp 1.00000 kHz 500 mVrms 500 mVrms ±7.887 mVrms
50% Ramp 1.00000 kHz 2.500 Vrms 2.500 Vrms ±27.89 mVrms
50% Square 1.00000 kHz 90 mVrms 90 mVrms ±5.900 mVrms
50% Square 1.00000 kHz 900 mVrms 900 mVrms ±14.00 mVrms
50% Square 1.00000 kHz 4.500 VRms 4.500 Vrms ±50.00 mVrms
Vrms100 kHz
Vrms1 kHz
⎝⎠
⎛⎞
20 × log
Offset =