48NDR
P. 8 / 8
EM-9443 Rev.5
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: +81(6)6659-8201 Fax: +81(6)6659-8510 E-mail: [email protected]
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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 set
-
ting value in seconds is shown at the right end of the
digital indicator, with ‘d.’ at the left end.
3) Press [UP] or [DOWN] buttons until the meter shows the
desired value, and press [SET].
(Same procedure for L, H, HH, 1, 2 setpoints)
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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 set
-
ting value is shown at the right end of the digital indica-
tor, with ‘A.’ at the left end.
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].
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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 de
-
activated state.
CALIBRATION PROCEDURE
This unit is calibrated at the factory to meet the ordered
specifications, therefore you usually do not need any cali-
bration.
The reading can be finely adjusted to match it to a receiving
instrument, or to compensate input wire resistance when
the unit is combined with a zenor barrier. Follow the regu
-
lar calibration procedure explained below:
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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 the reading to 0%
following the procedure explained in “ADJUSTMENT
PROCEDURE.”
2) SPAN: Apply 100% input and adjust the reading 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:
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CHECKING
Warm up the unit for at least 10 minutes. Apply 0%, 25%,
50%, 75% and 100% input signal. Check that the reading
for the respective input signal remains within accuracy de-
scribed in the data sheet. When the reading is out of toler-
ance, recalibrate the unit according to the “CALIBRATION
PROCEDURE” explained earlier.
