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External Input/Output Connector and Signals
8
External Control
The EXT I/O connector on the rear of the instrument can control the instrument by providing output of the
end-of-measurement and comparator decision signals, as well as accepting input of measurement trigger
and panel load signals.
All signals are isolated by optocouplers. (Common connector (ISO_COM) is shared by input and output.)
Check the input and output ratings, understand the safety precautions for connecting a control system,
and use correctly.
Connect the EXT I/O
connector of this instrument
to the signal output or input
device.
Make instrument
settings
Rear
Signal input/output
8.1 External Input/Output Connector and Signals
WARNING
To avoid electric shock or damage to the equipment, always observe the following
precautions when connecting to EXT I/O terminals.
•
Always turn off the power to the instrument and to any devices to be connected
before making connections.
•
During operation, a wire becoming dislocated and contacting another
conductive object can be serious hazard. Use screws to secure the EXT I/O
terminals.
•
Ensure that devices and systems to be connected to the EXT I/O terminals are
appropriately isolated.
CAUTION
Observe the following to avoid damage to the instrument.
• Do not apply voltage or current that exceeding the ratings to the EXT I/O terminals.
• Do not short-circuit ISO_5V with ISO_COM.
Refer to “Signal pinouts (instrument)” (p. 196)
• Install diodes to absorb counter-electromotive force when relays are used.
8 External Control
8
External Control
Содержание IM7580
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