3
3-11
IM 701830-01E
Before Starting Observation and Measurement of Waveforms
3.7
Connecting a Input Cable
(For High-Resolution, High Voltage, Isolation/High-Resolution, Isolation Modules)
Connecting a measurement cable
Connect the measurement cable to any of the input terminals of the High-Resolution, High-
Voltage, Isolation/High-Resolution, Isolation Module.
WARNING
• When connecting the item to be measured, make sure to turn OFF the power on
the item. Connecting or disconnecting the measurement cable while the item being
measured is turned ON is very dangerous.
• To prevent electric shock, make sure to use the measurement cable suitable for
the voltage range being measured on the input terminals of the High-Resolution,
High-Voltage, Isolation/High-Resolution, Isolation Module.
CAUTION
• Applying a power above the value indicated below may cause damage to the input
section. At a frequency above 1 kHz, damage may occur even when the voltage is
lower than this voltage.
For High-Resolution, High-Voltage, Isolation Module (701852)
Maximum input voltage (across the input terminals, H and L*
1
, at a frequency of 1
kHz or less)
850 V (DC+ACpeak)(CAT I and II, 600 Vrms)
Maximum allowable common mode voltage (across the input terminal, H or L, and
earth*
2
, at a frequency of 1 kHz or less)
400 Vrms (CAT I and II)
(Specification when the EN61010-1 standard does not need to be satisfied: 600
Vrms)
For High-Resolution, Isolation Module (701853)
Maximum input voltage (across the input terminals H and L*
3
, at a frequency of 1
kHz or less)
100 V (DC+ACpeak)(CAT I and II, 70 Vrms)
Maximum allowable common mode voltage (across the input terminal, H or L, and
earth*
4
, at a frequency of 1 kHz or less)
400 Vrms (CAT I and II)
(Specification when the EN61010-1 standard does not need to be satisfied: 600
Vrms)
• Do not connect a plug-in type terminal with exposed conducting parts to the input
terminal to be used as a measurement lead. It is very dangerous, if the connector
happens to come off.
H
L
*2
*1
H
L
*4
*3
701852
Input
terminal
earth
701853
Input
terminal
earth
For measuring voltages
of 42 V or less
For measuring voltages
of 42 V or more