5.1 Overview
79
5
Chapter 5 External Control (EXT I/O)
External Control
Input Functions
• External trigger input (TRIG)
• Select Panel No. to load (LOAD0 to LOAD6)
• Zero-adjust signal input (0ADJ
)
• Print Signal input (PRINT
)
• Self-calibration signal input (CAL)
• Manual comparator judgment input (MANU
)
External Output
Terminal Func-
tions
• End-of-Conversion signal output (EOM)
• Reference signal output (INDEX
)
• Measurement Fault signal output (ERR)
• Comparator decision signal output (R-Hi
, R-IN, R-Lo, V-Hi, V-IN, V-Lo, PASS,
FAIL
)
External Control
(EXT I/O)
Chapter 5
5.1 Overview
To avoid electric shock or damage to the equipment, always observe the
following precautions when connecting to the 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. Make sure that connections
are secure and use screws to secure the external connectors.
• Ensure that devices and systems to be connected to the EXT I/O ter-
minals are properly isolated.
To avoid damage to the instrument, observe the following cautions:
• Do not apply voltage or current to the EXT I/O terminals that exceeds their
ratings.
• When driving relays, be sure to install diodes to absorb counter-electromo-
tive force.
•
Be careful not to short-circuit ISO_5V to ISO_COM.
See: "5.2 Signal Descriptions" (p.80)
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