Table of Contents
Advertisement
Serial Port Connectors (A, B, C, D)
The Motherboard includes four external RS‐232 ports with the following
characteristics:
• Standard 9 pin D‐shell
• Ports have a shunt to select between +12 V and normal RI functionality. The default
is 12 V. These ports are marked with the lightning bolt symbol to signify its
powered capability.
• Maximum power capability is 1.5 A from any one port with a maximum combined
capability of 3.0 A for all ports. Total +12 V power peripheral current (RS‐232 and
USB) must NOT exceed 3.0 A.
• The +12 V outputs from the powered ports are protected by a self healing fuse.
• If a port does not have +12 V connected to pin 9, that port can be used to wake up
the terminal from Standby via activity on the RI pin.
• COMA and COMMB ports are provided in a DB9 dual stack configuration. Color:
Teal or Turquoise
• COMC and COMD are individually mounted on the Back Panel and connected to
the Motherboard with cables. Color: Black
PIN No.
Signal Description
1
DCD (Data Carrier Detect)
2
RXD (Receive Data)
3
TXD (Transmit Data)
4
DTR (Data Terminal Ready)
5
GND (Ground)
6
DSR (Data Set Ready)
7
RTS (Request to Send)
8
CTS (Clear to Send)
9
RI (Ring Indicator) or +5V or +12V
Circuit Boards
7
Hide quick links:
Advertisement
Table of Contents
