Metrix CX 1651

146
29. Disconnect cable adapter Option 60 and connect distortion meter to the voltage output terminals of the
calibrator. Set output voltage 10 VAC, frequency 1000 Hz and sin waveform.
30. Check harmonic distortion of output signal. It should not exceed 0.05%.
If calibrator is out of limits is in some points of this test, appropriate function and range should be recalibrated.
It is not necessary to recalibrate all functions, but only this one, which does not meet specification. See chapter
Calibration mode, where recalibration procedure is described.
24.5. Tables of limits
20 V DC Basic range with linearity test
Function
Range
Value (V)
Frequency (Hz)
Deviation
allowed(%value)
V-DC
20.0 V
2.0
0.008
V-DC
20.0 V
4.0
0.006
V-DC
20.0 V
6.0
0.005
V-DC
20.0 V
8.0
0.004
V-DC
20.0 V
10.0
0.004
V-DC
20.0 V
12.0
0.004
V-DC
20.0 V
14.0
0.004
V-DC
20.0 V
16.0
0.004
V-DC
20.0 V
18.0
0.004
V-DC
20.0 V
19.0
0.004
V-DC
20.0 V
-2.0
0.008
V-DC
20.0 V
-4.0
0.006
V-DC
20.0 V
-6.0
0.005
V-DC
20.0 V
-8.0
0.004
V-DC
20.0 V
-10.0
0.004
V-DC
20.0 V
-12.0
0.004
V-DC
20.0 V
-14.0
0.004
V-DC
20.0 V
-16.0
0.004
V-DC
20.0 V
-18.0
0.004
V-DC
20.0 V
-19.0
0.004
Table I
DC voltage test
Function
Range
Value (V)
Frequency (Hz)
Deviation
allowed(%value)
V-DC
2.0 V
1.9
0.004
V-DC
2.0 V
-1.9
0.004
V-DC
240.0 V
190.0
0.004
V-DC
240.0 V
240.0
0.003
V-DC
240.0 V
-190.0
0.004
V-DC
240.0 V
-240.0
0.003
V-DC
1000.0 V
1000.0
0.010
V-DC
1000.0 V
-1000.0
0.010
Table II