Safety Guide For Using Gl260 - GRAPHTEC midi LOGGER GL260 Quick Start Manual

Safety Guide for using GL260

Maximum input voltage
If a voltage exceeding the specified value goes into the instrument, the electrical
relay in the input will be damaged. Never input a voltage exceeding the specified
value at any moment.
< Between +/– terminals(A) >
• Maximum input voltage: 60Vp-p (Range of 20mV to 1V)
< Between Channel to channel (B) >
• Maximum input voltage: 60Vp-p
• Withstand voltage: 350 Vp-p at 1 minute
< Between Channel to GND (C) >
• Maximum input voltage: 60Vp-p
• Withstand voltage: 350 Vp-p at 1 minute
Warm-up
GL260 requires approximately 30 minutes warm-up time to deliver the optimum
performance.
Unused channels
The analog input section can frequently have cases of impedance.
Left open, measured value may fluctuate due to noise.
To rectify, set unused channels to "Off" in the AMP setting menu or short the + and
– terminals for better result.
Noise countermeasures
If measured values fluctuate due to extraneous noise, run the following
countermeasures. (Results may vary according to noise type.)
Ex 1 : Connect the GL260's GND input to ground.
Ex 2 : Connect GL260's GND input to measurement object's GND.
Ex 3 : Operate GL260 with batteries (Option: B-573).
Ex 4 : In the AMP settings menu, set filter to any setting other than "Off".
Ex 5 : Set the sampling interval which enables GL260's digital filter (see table below).
Number of Measuring
Channels
*1
1 Channel or less
2 Channel or less
5 Channel or less
10 Channel or less
*1 Number of Measuring Channels is the number of active channels in which input settings are
NOT set to "Off".
*2 Temperature cannot be set when the active sampling interval is set to 10 ms, 20 ms or 50 ms.
110Vp-p (Range of 2V to 100V)
Allowed Sampling
Interval
10 msec or slower
20 msec or slower
50 msec or slower
100 msec or slower
6
Sampling Interval which
enables Digital Filter
50 msec or slower
*2
125 msec or slower
*2
250 msec or slower
*2
500 msec or slower