GRAPHTEC midi LOGGER GL240 User Manual page 28

CHAPTER 2 Checks and Preparation
Internal equivalent circuit of I/O circuit
•
Alarm output
+5 V
10K Ω
2SC2411K
•
Logic/Pulse input
LOGIC/PULSE
GND
•
Trigger input/External sampling input
TRIGGER/SAMPLE
GND
2-8
Maximum ratings of the transistor for alarm output
VCEO (Collector-emitter voltage)
IC (Collector current)
PC (Collector dissipation)
* The maximum ratings must not be exceeded.
Example of external connection
ALARM
Load
GND
+ 5V
10 K Ω
68 K Ω
2 20 K Ω
+ 5V
10K Ω
68 K Ω
: 30 V
: 0.5A
: 0.2W
Required for an inductive
load such as a relay
DC
(5 to 24V)
+ 5V
Comparator
+ 5V
22 0K Ω
0. 0 1μF
Comparator