Precautions to Observe When Performing Measurement
If a voltage exceeding the specified value is input, the semiconductor relay in the
input section will be damaged. Never input a voltage exceeding the specified value
even for a moment.
< B/– terminals(A) >
• Maximum input voltage: 60Vp-p (Range of 20mV to 2V)
110Vp-p (Range of 5V to 100V)
< Between input terminal/input terminal (B) >
• Maximum input voltage: 60Vp-p
• Withstand voltage: 350Vp-p/1 minute
< Between input terminal/GND (C) >
• Maximum input voltage: 60Vp-p
• Withstand voltage: 350Vp-p/1 minute
Maximum input voltage of Withstand High Voltage high-precision terminal (B-565)
Maximum input voltage of standard terminal (B-564) and screwless terminal (B-564SL)
If a voltage exceeding the specified value is input, the semiconductor relay in the
input section will be damaged. Never input a voltage exceeding the specified value
even for a moment.
Warming-up
GL840 requests to have approximately 30 minutes warm-up in order to have the
specified performance.
Unused channels
The analog input section of the GL840 contains a capacitor to improve the noise
removal capability.
Therefore, when the input terminal is open, the measurement result may be
affected by the signals of other channels. In such a case, set the input setting to
"Off" or short the +/- terminal. If the signal is input properly, there is no effect of
other channels.
< B/– terminals(A) >
• Maximum input voltage: 60Vp-p (Range of 20mV to 2V)
110Vp-p (Range of 5V to 100V)
< Between input terminal/input terminal (B) >
• Maximum input voltage: 600Vp-p
• Withstand voltage: 600Vp-p
< Between input terminal/GND (C) >
• Maximum input voltage: 300Vp-p
• Withstand voltage: 2300VACrms/1 minute
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