IM 253401-01E
14-3
14
Adjustment, Calibration and Trouble-Shooting
14.1 Adjustments
Adjusting the D/A Output
• Preparations
1 Connect the pin No. of the output connector corresponding to the channel to be adjusted to
the H terminal of the DMM, and connect pin No. 12 and 24 of the output connector to the L
terminal.
2 Set the range of the DMM to 20V.
3 After “dA” appears on display C (using the ∧ or ∨ key), press the ENTER key.
• Adjusting
After having carried out the above described preparations, the displays will show the following.
Display A will be blinking.
display A: ch 1
display B: 5.000
display C: 5.0000
1 Select the channel to be adjusted on display A by pressing the ∧ or ∨ key, and then press the
ENTER key. The head digit of display C will start blinking. From that point a voltage of
approx. +5V will be output from the connector.
2 Press the V RANGE or A RANGE key to move the blinking digit of display C. Then, using
the ∧ or ∨ key, adjust the blinking value to the value displayed at the DMM.
3 After having adjusted all digits of display C, press the ENTER key. “–5.000V” will appear on
display C, and a voltage of approx. –5 V will be output from the connector.
4 Carry out step 2 once again.
5 After having adjusted all digits of display C, press the ENTER key.
6 Change the channel indication on display A from “ch1” to “ch2”. Carry out steps 1 to 5 to
adjust channel 2.
7 Carry out steps 1 to 5 to adjust all channels.
8 Press the SHIFT key and display C will change to “dA”. This completes the D/A output
adjustments. When you press the RESET key instead of the SHIFT key, the carried out
adjustments will become invalid.
After Finishing Adjustments
After having finished all adjustments, turn the power OFF and ON again.
Communication Commands to Carry Out Adjustments
Command Description
CAL1 Enters the range adjustment mode
CAL2 Enters the external input range adjustment mode
CAL3 Enters the D/A output adjustment mode
CAL0 Finishes adjustment (and returns to normal measurement mode)
CR0 Switches to 30V range in range adjustment mode
CR1 Switches to 300V range in range adjustment mode
CR2 Switches to 1A range in range adjustment mode
CR1 Switches to 10A range in range adjustment mode
CHm Switches the channel in D/A output adjustment mode m = 1 to 12
CDm,n Enters the actual output value in D/A output adjustment mode
m = 1 to 12, n = actual output value
DO0 Outputs +5V in D/A output adjustment mode
DO1 Outputs –5V in D/A output adjustment mode
OD Requests the output of measurement data, and sets the output format to normal
measurement default
ENT Corresponds to the ENTER key operation, confirming the adjustment value.
CAN Corresponds to the RESET key operation, ignoringthe adjustments.
END Corresponds to the SHIFT key operation, keeping the adjustments.
Note
• In case of D/A adjustment, change the channel using the CHm command, then carry out DO0 or DO1
command, and the request output using the CDm,n command. After the CDm,n command is being
executed by +5V or –5V, make sure to confirm by the ENT command.
• After the display has been stabilized in the range adjustment mode or external input range adjustment
mode, execute the ENT command.
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