SEL-3022 Transceiver
Instruction Manual
Date Code 20050615
Introduction & Specifications
Connections, Reset Button, and LED Indications
1.8
Cryptographic Manual—Do Not Copy
Figure 1.4
Typical Alarm Output Installation
Serial Port Pin-Out Connection
The SEL-3022 has a fully compliant DCE serial port. SEL offers many cable
configurations for use between the SEL-3022 and other devices.
The serial port pin-out descriptions for the DCE port are as follows.
Table 1.1
DCE (Female DB9)
Pin
Description
1
Data Carrier Detect (Output)
2
Transmitted Data (Output)
3
Received Data (Input)
4
Data Terminal Ready (Input)
5
Ground
6
Data Set Ready (Output)
7
Request to Send (Input)
8
Clear to Send (Output)
9
Ring Indicator (Output)
SEL-3022
Alarm Output Contact
Do not apply 125 Vdc
directly to the SEL-3022
power supply connections
Typical SEL contact
inputs draw 4 mA of
nominal wetting source voltage
SEL-2030
Contact Input
Wetting Voltage
125 Vdc
0.5 A, 250 V
Fast Blow Fuse
Optional Load
Resistor
+
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Summary of Contents for SEL-3022
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