Options: Customizing The Modem Setup; Methods For Selecting Options; Front-Panel Options; Pushbuttons And The Lcd - Black Box 32144 Manual

Table 1-1. Pin Assignments—EIA Interface Connector
Pin Designation Function
1 AA
2 BA
3 BB
4 CA
5 CB
6 CC
7 AB
8 CF
9 +P
10 -P
15 DB
17 DD
18 CN
20 CD
21 CN
Frame ground—not connected
Transmit (send) data (TD)
Received data (RD)
Request to send (RTS)
Clear to send (CTS)
Data set (modem) ready (DSR)
Signal ground (SG)
Carrier detect (CD)
Testing voltage, +10V
Testing voltage, -10V
Transmit clock (TC)
Receive clock (RC)
Analog loopback control (ALBT)
Data terminal ready (DTR)
Remote digital loopback control
CHAPTER 1: Specifications
LCD Indicator Source
TD
RD
RS
CS
MR
CD
TR
DTE
Modem
DTE
Modem
Modem
Ground
Modem
Modem
Modem
Modem
Modem
DTE
DTE
DTE
11