Tonghui TH2840 Series - Page 197

189
7
8
9
10
/BIN7
/BIN8
/BIN9
/BIN10
11
Undefined
Output
Factory test signal, please do not
connect
12
13
/EXT.TRIG
Input
External trigger: when the trigger
mode is Single, TH2840 will be
triggered by the positive-edge in
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 /BIN1-/BIN10, it
will be /PASS (see Figure 10-2).
20
/FAIL
Output
If the measurement result is not in
any one of /BIN1-/BIN10, it will be
/FAIL (see Figure 10-2).
21
22
23
24
Undefined
Output
Factory test signal, please do not
connect
25
/KEY LOCK
Input
When this single is effective, all the
front panel function keys and touch
screen of TH2840 are locked and
no longer work.
27
28
EXT.DCV1
Input
The external DC voltage 1：
the pull-up DC power provider pin
for optoelectronic coupling signal
(/BIN-/BIN10, /PASS,/FAIL).
29
/ALARM
Output
When circuit is interrupted,
/ALARM is effective.