Hioki PQ3198 - Page 235

13.6 Interface Specification
229
10
13
Chapter 13 Specifications
External control Connector 4-pin screwless terminal block
Rated voltage -0.5 V to +6.0 V
Rated voltage -0.5 V to +6.0 V
External event input
External event
input item setting
Operation Pulse width
ON Events occur at TTL low or short between the
[GND] and [EVENT IN] terminals.
Low level for 30 ms
or more
START/STOP Recording starts and stops at TTL low or short be-
tween the [GND] and [EVENT IN] terminals.
When a START (or STOP) event is detected, the
instrument accepts no STOP (or START) events
for one second. Using the external control to start
recording data causes the instrument to reset data
forcibly.
Low level for 50 ms
or more
External event output
External event
output item setting
Operation Pulse width
Short pulse output TTL low output at event generation between
[GND] terminal and [EVENT OUT] terminal
Low level for 10 ms
or more
Long pulse output TTL low output at event generation between
[GND] terminal and [EVENT OUT] terminal
No external event output at START event and
STOP event.
Low level for
2.5 s
ΔV10 alarm
TTL low output at ΔV10 alarm generation between
[GND] terminal and [EVENT OUT] terminal
Low level while
alarm occurring;
reverts to high at
data reset
Pin assignment
Pin Signal name I/O Function Operation
1 EVENT IN IN Event-in Level
2 EVENT OUT OUT Event-out Level
3GND ― Ground ―
4GND ― Ground ―
HIOKI PQ3198A961-02