Avoid electrical shock and short circuit accidents
• Do not apply voltage of AC33 Vrms or 60 VDC or above between the analog
input section and main unit (GND terminal), or to between each analog
channel.
• Do not apply voltage exceeding the rated voltage to analog input section
(between + and – terminals).
Range 20mV to 1V : maximum 30Vp-p
Range 2V to 500V : maximum 500Vp-p
Warming-up
The GL900 should be allowed to warm up with the power turned on for
approximately 30 minutes to achieve operation according to the specified
performance.
Connection Precautions
Do not input signals to the BNC and screw-type terminals of the same
channel at the same time.
It may cause damage to the measurement device.
Unused channels
The analog input section has high impedance.
If it is open, measurement signals may not be visible due to noise.
In such a case, set input setting of unused channels to "Off" or short circuit
the + and – terminals.
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 GL900's GND to ground.
Ex 2 : Connect GL900's GND to measurement object's GND.
Ex 3 : In the AMP settings menu, set filter to any setting other than "OFF".
Ex 4 : Operate GL900 with batteries (Option: B-517).
Precautions to Observe When Performing Measurement
4
Use correctly
and safely !
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