M2MST
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: +81(6)6659-8201 Fax: +81(6)6659-8510 E-mail: [email protected]
EM-5080 Rev.2 P. 3 / 3
CHECKING
1) Terminal wiring: Check that all cables are correctly con-
nected according to the connection diagram.
2) Power input voltage: Check voltage across the terminal
13 – 14 with a multimeter.
3) Output: Check that the load resistance meets the de-
scribed specifications.
ADJUSTMENT PROCEDURE
This unit is calibrated at the factory to meet the ordered
specifications, therefore you usually do not need any cali-
bration.
For matching the signal to a receiving instrument or in case
of regular calibration, adjust the output as explained in the
following.
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HOW TO CALIBRATE THE OUTPUT SIGNAL
Use measuring instruments of sufficient accuracy level.
Turn the power supply on and warm up for more than 10
minutes.
1) ZERO: Set the output to 0% and adjust output signal to
0%.
2) SPAN: Set the output to 100% and adjust output signal
to 100%.
3) Check ZERO adjustment again with 0% setpoint.
4) When ZERO value is changed, repeat the above proce-
dure 1) – 3).
MAINTENANCE
Regular calibration procedure is explained below:
■
CALIBRATION
Warm up the unit for at least 10 minutes. Set to 0%, 25%,
50%, 75% and 100% output. Check that the output signal
for the respective setpoint remains within accuracy de-
scribed in the data sheet. When the output is out of toler-
ance, recalibrate the unit according to the “ADJUSTMENT
PROCEDURE” explained earlier.
LIGHTNING SURGE PROTECTION
M-System offers a series of lightning surge protector for
protection against induced lightning surges. Please contact
M-System to choose appropriate models.
