YOKOGAWA WT210, User Manual, Page: 281 / 316

15-3
IM 760401-01E
Maintenance and Troubleshooting
15
Adjusting the Current Range
1. Connect the current output terminal of the AC voltage/current standard to the
current input terminal of the WT210/WT230 and the current terminal of the
standard power meter.
V
±
C
±
EUT
V
±
C
±
V
±
C
±
V
±
A
±
Standard power
meter
EUT: Equipment under Test
H
L
AC voltage/
current standard
Voltage
Output
Terminal
2. In step 8 of “Adjusting the Voltage Range” described earlier, the current range
on display B is set to “500.0” mA. On the WT210, the current range is set to
“100.0” mA. The following procedure primarily describes the steps for the WT230.
Display A CAL
Display B 500.0 mA (100.0 mA on the WT210)
Display C Measured value (The measured value is displayed using 5 digits.)
3. Set the output current of the generator so that the standard power meter reads
0.5000 A.
4. Wait for the measured value on display C to stabilize. Even in stable condition,
the value fluctuates up to approximately
±
1 digit.
5. Press the ENTER key. The adjustment value is confirmed. Display B shows
the next current range.
Display A CAL
Display B **.**A
Display C Measured value (The measured value is displayed using 5 digits.)
6. Set the output current of the standard according to the current range shown on
display B and output the signal.
7. Repeat steps 4 to 6 to adjust the current range shown in the table below. The
type and the order of the current ranges that are displayed are fixed.
Current Range Output Current of the Standard
(Shown on display B)
100.0 mA 100.00 mA
(Applies only to the WT210)
500.0 mA 500.00 mA
1.000 A 1.0000 A
2.000 A 2.0000 A
5.000 A 5.0000 A
F 1.000 A 1.0000 A
(F indicates that the line filter is ON)
8. Turn OFF the output of the standard.
15.1 Adjustments