YOKOGAWA WT110 User Manual page 125

14.1 Adjustments
14-2
4 Press the ENTER key after the value on display C stabilizes. (Even in a stabilized condition,
drifting within ± 2 digits limit may occur.)
5 Display B will change to "300.0" V.
6 Set the output voltage of the standard to 300.0V.
7 Press the ENTER key after the value on display C stabilizes. (Even in a stabilized condition,
drifting within ± 2 digits limit may occur.)
8 Turn the output of the standard OFF.
This completes the adjustment of the voltage range. The current range will be adjusted next.
If the current range is not to be adjusted, press the SHIFT key here.
Adjusting the Current Range
1 After having completed adjusting the 300V voltage range, display B will show "1.000" A.
2 Connect the current output of the AC voltage/current standard to the current input terminal of
this instrument. Connect the H terminal of the standard to the A terminal of this instrument,
and connect the L terminal of the standard to the ± terminal of this instrument. In case of the
WT130, connect the current terminal of each input element horizontally. That is connect the
H terminal of the standard to the A terminal of element 1, the ± terminal to the A terminal of
element 2, the ± to the A terminal of element 3, followed by connecting the ± terminal to the
L terminal of the standard.
3 Set the output of the standard to 1.000A and output this current.
4 Press the ENTER key after the value on display C stabilizes. (Even in a stabilized condition,
drifting within ± 1 digit limit may occur.)
5 Display B will change to "10.00" A.
6 Set the output of the standard to 10.000A.
7 Press the ENTER key after the value on display C stabilizes. (Even in a stabilized condition,
drifting within ± 1 digit limit may occur.)
8 Turn the output of the standard OFF.
9 Press the SHIFT key and display C will change to "rAnGE". This completes the range
adjustments. When you press the RESET key instead of the SHIFT key, the carried out
adjustments will become invalid.
In case the External Input Option is installed (/EX1 or /EX2)
1 Select "Ein" in step 2 of Preparing this instrument (see previous page) and press the ENTER
key.
2 Display B will change to "10.00" V (or "200.0" mV).
3 Connect the voltage output of the AC voltage/current standard to the voltage input terminal of
this instrument. Connect the H terminal of the standard to the EXT terminal of this
instrument, and connect the L terminal of the standard to the ± terminal of this instrument. In
case of the WT130, bundle all EXT terminals together and bundle all ± terminals together.
4 Set the output voltage of the standard to 10.000V (or 200.00mV) and output this voltage.
5 Press the ENTER key after the value on display C stabilizes. (Even in a stabilized condition,
drifting within ± 2 digits limit may occur.)
6 Press the SHIFT key and display C will change to "Ein". This completes the external input
adjustments. When you press the RESET key instead of the SHIFT key, the carried out
adjustments will become invalid.
Note
The displayed value of the external input will become 50.000A by the rated range.
IM 253401-01E