-48 VDC Remote Power Manager
Appendices
155
Installation and Operations Manual
Data Connections
RS-232 port
Units are equipped standard with an RJ45 DTE RS-232c serial port. This connector can be used for direct local access
or from other serial devices such as a terminal server. An RJ45 crossover cable is provided for connection to an RJ45
DCE serial port.
Pin
DTE Signal Name
Input/Output
1
Request to Send
RTS
Output
2
Data Terminal Ready DTR
Output
3
Transmit Data
TD
Output
4
Signal Ground
5
Signal Ground
6
Receive Data
RD
Input
7
Data Set Ready
DSR
Input
8
Clear to Send
CTS
Input
RJ45 to DB9F serial port adapter
Additionally, an RJ45 to DB9F serial port adapter is provided for use in conjunction with the RJ45 crossover cable to
connect to a PC DB9M DCE serial port. The adapter pin-outs below reflect use of the adapter with the provided RJ45
crossover cable.
Pin
DCE Signal Name
Input/Output
1
2
Receive Data
RD
Output
3
Transmit Data
TD
Input
4
Data Terminal Ready DTR
Input
5
Signal Ground
6
Data Set Ready
DSR
Output
7
Request to Send
RTS
Input
8
Clear to Send
CTS
Output
Modem Port
Units are equipped standard with a DB9-male RS-232C DTE Modem serial port. This connector is typically used to
connect to an external modem, but can also be used to connect to any RS-232C device. A 9-pin female to 25-pin male
cable is included for connecting the -48 VDC Remote Power Managers to an external modem.
Pin
DTE Signal Name
Input/Output
1
Data Carrier Detect
DCD
Input
2
Receive Data
RD
Input
3
Transmit Data
TD
Output
4
Data Terminal Ready DTR
Output
5
Signal Ground
6
Data Set Ready
DSR
Input
7
Request to Send
RTS
Output
8
Clear to Send
CTS
Input
NOTE:
To connect to a PC serial port, a null-modem adapter and a female-to-female gender changer are required in addition to the included
cable.
6
7 54321
8
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
