Tonghui TH2840 Series - Page 211

203
Compare output signal: /FAIL1 - /FAIL12, /PASS, /FAIL.
Control output signal: /INDEX (analog measurement end signal)
/EOM (measurement end and comparison data valid signal)
/ALARM (instrument power down signal).
Control input signal: /EXT.TRIG (external trigger signal)
/Keylock.
See Table 10-9 for the signal assignment and brief description of the above pins.
Table 10-9 The signal assignment of
Pin
Signal
Signal direction
Description
1
2
3
4
5
6
7
8
9
10
11
/FAIL1
/ FAIL2
/ FAIL3
/ FAIL4
/ FAIL5
/ FAIL6
/ FAIL7
/ FAIL8
/ FAIL9
/ FAIL10
/ FAIL11
Output
Sorting result
All /FAIL (failure signal) outputs are open
collector outputs.
12
13
/EXT.TRIG
Input
External trigger:
When the trigger mode is set to single, the
TH2840 is triggered by the falling edge pulse
signal applied to this pin.
14
15
EXT.DCV2
Input
External DC voltage 2:
The DC provider pin for the optoelectronic
coupling signal(/EXT_TRIG, /KeyLock,
/ALARM，/INDEX，/EOM)
16
17
18
+5V
Output
The internal power +5V: to use the internal
power is not recommended. If you use the
internal power, please ensure that the current
is lower than 0.3A and the signal line is far
from the disturbance source.
19
/PASS
Output
As long as the measurement result is in any
one of /FAIL1-/FAIL12, it will be /PASS
20
/FAIL
Output
If the measurement result is not in any one of
/FAIL1-/FAIL12, it will be /FAIL
21
/ FAIL 12
Output
Sorting result of the 12th parameter
22
23
24
Undefined
Output
Factory test signal, please do not connect
25
/KEY LOCK
Input
When this single is effective, all the front