Power Connector; Rs-232 Serial Connector - Black Box 202T User Manual

MODEM 202T

4.2 Power Connector

The two-position screw terminal connector is left pin negative (-) and right pin
positive (+). DC negative is not connected to the chassis.

4.3 RS-232 Serial Connector

Pin Number
1
2
3
4
5
6
7
8
9
*DCD via factory jumper to pin 1.
14
Table 4-1. RS-232 serial connector.
Name
DCD*
TX
RX
DTR
Gnd
DSR*
RTS*
CTS
RI
Function
Received carrier detect out
RS-232 Data Out of Modem
RS-232 Data In to Modem
Not connected in unit
Signal Ground
Data Set Ready (connected to CTS)
Ready to Send (transmit enable)
Clear to Send [may be connected to
RTS or DCD] (connected to DSR)
Not connected in unit