Bk-precision 4078 - Manual Manual de usuario descargar pdf (Pagina 97)

- 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

-10mV

+10mV

-2V

-1.970V

-2.030V

-4V

-3.950V

-4.050V

5.3.4 Sine Distortion

Specification: - 65 dB to 20 KHz.

Procedure:

1 2 ... 92 93 94 95 96 97 98 99 100 101 102 103

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Bk-precision 4078 - Manual Manual de usuario Pagina 97

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