Physical Overview
35
Serial Interfaces
COM 1 and COM 2
: These interfaces are used to connect an RS-232C (serial) cable
with a D-Sub 9 pin connector.
Serial interface COM1 and COM2
Connector
D-Sub 9 pin plug
Type
RS-232C, modem-
capable, not electrically
isolated
UART
16650-compatible, 16-
byte FIFO
Transfer rate
Max. 115 kBit/s
Cable length
Max. 15 meters (49.21
feet)
Interfit Bracket #4-40 (UNC)
Pin
Assignment
1
DCD
2
RXD
3
TXD
4
DTR
5
GND
6
DSR
7
RTS
8
CTS
9
RI
1
5
6
9
Summary of Contents for PS-4000B Series
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Page 95: ...Hardware Modifications 95 The following figure shows the dimensions of the UPS battery unit...
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