YOKOGAWA WT210, User Manual, Page: 139 / 316

9-3
IM 760401-01E
External In/Output Function
9
9.2 Remote Control (Option)
Controlling Integration
To control integration, apply timing signals according to the timing chart below.
EXT START
EXT STOP
EXT RESET
INTEG BUSY
Stop Start Reset Stop Start
5 ms min.
5 ms min.
5 ms min.
Approx.
15 ms Approx.
15 ms Approx.
15 ms Approx.
15 ms
As shown in the timing chart, the INTEG BUSY output
signal level goes low while integration is in progress.
The signal can be used to monitor integration, etc.
Holding Display Data Update (same function as HOLD key)
5 ms min.
Display hold
EXT. HOLD
To hold the display update, apply the EXT. HOLD signal according to the timing chart below.
Updating Display Data which has been held (same function as TRIG key)
Measurement start
EXT. TRIG
5 ms min.
250 ms or more and display
update interval or more
Display update
EXT. TRIG
5 ms min.
Display update
5 ms min.
Display update interval or
more
Measurement start
⋅
Update timing during normal measurement/integration
⋅
Update timing while harmonic analysis function is in progress
Applying an EXT.TRIG signal when the display is on hold updates the display data.
Note
If the period of the EXT. TRIG signal does not meet the conditions of the figure above, the
signal may not be identified by the WT210/WT230.
CAUTION
Do not apply a voltage which exceeds the TTL level to the remote controller pin.
Also, do not short the output pins nor apply a voltage to them. The instrument
might be damaged.