6
Noise countermeasures
If measured values fluctuate due to extraneous noise, conduct the following
countermeasures.(Results may differ according to noise type.)
Ex 1 : Connect the GL840's GND to ground.
Ex 2 : Connect GL840's GND to measurement object's GND.
Ex 3 : Operate GL840 with batteries (Option: B-568).
Ex 4 : In the AMP settings menu, set filter to any setting other than "OFF".
Ex 5: Set the sampling interval which enables GL840’s digital filter
(see table below).
*1 Number of Measuring Channels is the number of channels in which input settings are
NOT set to “OFF” .
*2 Temperature cannot be measured when the sampling interval is set to 10 ms/20 ms or
50 ms.
In the "OTHER" menu, the commercial power frequency to be used must be
set.
Set the AC power frequency to be used.
Device to be
measured
Z3
GL840
Z1 Z2
Thermocouple Input terminals
Vin
R1
R2
Select items
50 Hz
60 Hz
Area where the power frequency is 50 Hz
Area where the power frequency is 60 Hz
Description
Number of Measuring
Channels
*1
1 chahnnel or less
5 chahnnels or less
2 chahnnels or less
10 chahnnels or less
11 to 20 chahnnels
21 to 50 chahnnels
51 to 100 chahnnels
101 to 200 chahnnels
10 msec or slower
*2
50 msec or slower
*2
20 msec or slower
*2
100 msec or slower
200 msec or slower
500 msec or slower
1 sec or slower
2 sec or slower
50 msec or slower
250 msec or slower
125 msec or slower
500 msec or slower
1 sec or slower
2 sec or slower
5 sec or slower
10 sec or slower
Allowed Sampling
Interval
Sampling Interval which
enables Digital Filter
To Next Page
Loading...
