Chroma 66200 Series - Current Measurement Calibration

Appendix F Calibration Procedure
20
8
2
0.2
AUTO AUTOAUTO
150
300
500
VOLTAGE
CURRENT
SHUNT
2
0.4
0.1
0.01
LH
SYSTEM
Cali
Setup
Trig /
Enter
ON
OFF
I
O
GO/NG
PASS
Shunt
Limit
Meas
RMT
FAIL
Is/Trig
PF F
E
CF
THDv
THD
V
Vpk+
Vpk-
mA
I
Ipk+
Ipk-
Is
W
PF
VA
VAR
Chroma
DIGITAL POWER METER
MODEL
66202
k
(4) Set the Fluke 5500A output to OFF and press Trig/Enter to go to voltage
measurement for offset and noise calibration.
3. Offset and Noise Calibration for Current Measurement:
(1) Short-circuit the I+ and I- on 66202 rear panel (using short circuit wire). The
screen blinks as shown below:
V
Vpk+
Vpk-
mA
I
Ipk+
Ipk-
Is
(2) Press Trig/Enter the W measurement window shows the uncalculated measurement
and run I offset and I noise Calibration. (During process the current range LED
0.01, 0.1, 0.4 and 2 will be on accordingly.) Once the calibration is done, the W
measurement window will show the calibrated value (as shown below in example
figures), and the measurement window will show the message “done”. The meter
will beep concurrently.
20
8
2
0.2
AUTO AUTOAUTO
150
300
500
VOLTAGE
CURRENT
SHUNT
2
0.4
0.1
0.01
LH
SYSTEM
Cali
Setup
Trig /
Enter
ON
OFF
I
O
GO/NG
PASS
Shunt
Limit
Meas
RMT
FAIL
Is/Trig
PF F
E
CF
THDv
THD
V
Vpk+
Vpk-
mA
I
Ipk+
Ipk-
Is
W
PF
VA
VAR
Chroma
DIGITAL POWER METER
MODEL
66202
k
(3) When finished, remove the short circuit wire and press Trig/Enter to go to next
procedure.
F-7