3 offset accuracy, 4 sine distortion – B&K Precision 4078 - Manual User Manual
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- Select OUT ON
8. CHECK that the measured voltages on the DVM at 10Vp-p, 5Vp-p, 3Vp-p, 1Vp-p, 100 mVp-p and
50mVp-p are in the accuracy range:
Amplitude
setting
Minimum reading
RMS
Maximum reading RMS DVM reading RMS
10Vp-p
3.499V
3.572V
5Vp-p
1.749V
1.786V
3Vp-p
1.049V
1.072V
1Vp-p
0.349V
0.358V
100mVp-p
34 mV
37 mV
50mVp-p
17 mV
19 mV
5.3.3 Offset Accuracy
Specification: ±1% of programmed value ±10mV, into 50 ohm
Procedure:
1. Connect the OUTPUT connector to the input of the DVM using a 50 ohm coaxial cable and the
50 ohm 0.1% termination.
2. Set the DVM to measure DC volts.
3. Set the unit to generate a SINE wave signal with 1 KHz frequency. Set the unit amplitude to
10mVp-p
4. Set the unit offset to +4V.
7 CHECK that the measured voltages on the DVM at offsets of +4Vp-p, +2Vp-p, 0Vp-p, -2Vp-p,
-4Vp-p are in the accuracy range:
Offset
setting
Minimum reading
Maximum reading
DVM reading
+4V
3.950V
4.050V
+2V
1.970V
2.030V
0V
-10mV
+10mV
-2V
-1.970V
-2.030V
-4V
-3.950V
-4.050V
5.3.4 Sine Distortion
Specification: - 65 dB to 20 KHz.
Procedure: