GRAPHTEC MT100 - Internal Equivalent Circuit of the Input;Output Circuit

2-13
Checks and Preparation
Internal Equivalent Circuit of the Input/Output Circuit
Pulse/Logic Input
External Trigger Input
Alarm Output
* COM and NO is connected when an alarm is generated (COM and NC will be open).
+5V
Comparato
r
PULSE/LOGIC(n)
GND
10KΩ
68KΩ
220KΩ
+5V
+5V
Comparato
r
0.1μ
EXTTRIG
GND
10KΩ
68KΩ
220KΩ
+5V
NC
ALARM(n)
NO
CO
M