48NDT
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-9444-A Rev.9 P. 8 / 8
• How to Cancel LL and L Alarms
1) Press [UP] or [DOWN] buttons until the indicator comes
to the lower limit (digital indicator shows “----”), and
press [SET].
LL indicator must be set before L as the L setpoint can-
not go below the LL setpoint.
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LL (or L, H, HH, 1, 2) ALARM ON TIME DELAY
1) Hold down [M] for 3 seconds* and push [M] to choose
[LL].
2) Press [UP] and [DOWN] buttons at once. Current setting
value in seconds is shown at the right end of the digital
indicator, with ‘d.’ at the left end.
Factory default setting is “0”.
3) Press [UP] or [DOWN] buttons until the meter shows the
desired value, and press [SET]. (The range between 0 to
15 sec. can be set.)
(Same procedure for L, H, HH, 1, 2 setpoints)
■
MOVING AVERAGE SAMPLE NUMBER
1) Hold down [M] for 3 seconds* and push [M] to choose [P].
2) Press [UP] and [DOWN] buttons at once. Current setting
value is shown at the right end of the digital indicator,
with ‘A.’ at the left end.
Factory default setting is “4”.
3) Press [UP] or [DOWN] buttons until the indicator shows
the desired value (1, 2, 4, 8 or 16), and press [SET].
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LED BRIGHTNESS ADJUSTMENT
1) Hold down [M] for 3 seconds* and push [M] to choose [P].
2) Press [UP] and [DOWN] buttons at once for two times.
Current setting value is shown on the digital indicator,
with ‘c.’ at the left end. Factory default setting is ‘7,’ the
brightest.
3) Press [UP] or [DOWN] buttons until the indicator shows
the desired setting (1 through 7), and press [SET].
■
RESET TO FACTORY SETTING
1) Hold down [M] for 3 seconds* and press [M] to choose [P].
2) Press [UP] and [DOWN] buttons at once for three times.
‘RSET’ starts blinking on the digital indicator.
3) Press [SET] and [DOWN] buttons at once.
* The [M] button remain activated for 1 minute after it has
been used to choose a indicator LED (programming mode).
During this period, pressing the [M] button briefly is enough
to choose another indicator. After 1 minute, it turns to deac-
tivated state.
CALIBRATION 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 indication to a receiving instrument or in
case of regular calibration, adjust the output as explained
in the following.
■
HOW TO CALIBRATE THE OUTPUT INDICATION
Use a signal source and measuring instruments of sufficient
accuracy level. Turn the power supply on and warm up for
more than 10 minutes.
1) ZERO: Apply 0% input and adjust bargraph and digital
indicator to 0% following the procedure explained in “AD-
JUSTMENT PROCEDURE.”
2) SPAN: Apply 100% input and adjust bargraph and digi-
tal indicator to 100% following the same procedure.
3) Check ZERO adjustment again with 0% input.
4) When ZERO value is changed, repeat the above proce-
dure 1) – 3).
MAINTENANCE
Regular checking procedure is explained below:
■
CHECKING
Warm up the unit for at least 10 minutes. Apply 0%, 25%,
50%, 75% and 100% input signal. Check that the bargraph
and digital indicator for the respective input signal remains
within accuracy described in the data sheet. When the bar-
graph and digital indicator are out of tolerance, recalibrate
the unit according to the “CALIBRATION PROCEDURE”
explained earlier.
WIRING INSTRUCTIONS
■
SCREW TERMINAL
Torque: 0.6 N·m
■
SOLDERLESS TERMINAL
Refer to the drawing below for recommended ring tongue
terminal size. Spade tongue type is also applicable.
Applicable wire size: 0.25 to 1.65 mm
2
(AWG 22 to 16)
Recommended manufacturer: Japan Solderless Terminal
MFG.Co.Ltd, Nichifu Co.,ltd
6 (.24) max
3.3 (.13) max
mm (inch)
LIGHTNING SURGE PROTECTION
M-System offers a series of lightning surge protectors for
protection against induced lightning surges. Please contact
M-System to choose appropriate models.
