Remote Control - YOKOGAWA WT1800 User Manual

Remote Control

Through external control, you can hold values; perform single measurements; start, stop, and reset
integration; and print.
Only apply voltages that are within the range of 0 V to 5 V to the remote control input pins. Do
not short or apply external voltages to the output pins. Doing so may damage the WT1800.
Item
Input signal
Output signal
Input level
Remote Control I/O Circuit
Input circuit
10 kΩ
10 kΩ
0.01 μF
L level: 0 V to 1 V
H level: 4 V to 5 V
Controlling Integration Remotely
Apply signals according to the following timing chart.
EXT START
EXT STOP
EXT RESET
INTEG BUSY
Holding the Updating of Displayed Data (The same functionality
as pressing HOLD)
Apply an EXT HOLD signal as shown in the following figure.
EXT HOLD
IM WT1801-03EN
4.6 D/A Output and Remote Control (D/A OUTPUT; option)
CAUTION
Specifications
EXT START, EXT STOP, EXT RESET, EXT HOLD,EXT SINGLE, EXT PRINT
INTEG BUSY
0 V to 5 V
+5 V
L level: 0 V to 1.5 V (8 mA)
H level: 2.8 V to 5 V (–8 mA)
Start Stop
40 ms or more
40 ms or more
100 ms or less
1 s or less
The INTEG BUSY output signal is set to low level during integration.
Use this signal when you are observing integration.
40 ms or more
Output circuit
+5 V
100 Ω
0.01 μF
Reset Start Stop
40 ms or
more
100 ms or less
1 s or less
1
2
3
4
5
6
App
Index
4-9