B&K Precision 4078 - Manual - Manual (Page 97)

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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: