Model 1000R EIA/TIA-561 8 Position Interface:
Pin No. Function
1 --------------------------------DSR
2 --------------------------------DCD
3 --------------------------------DTR
4 --------------------------------SG
5 --------------------------------RD
6 --------------------------------TD
7 --------------------------------CTS
8 --------------------------------RTS
3.3 OPERATING THE MODEL 1000R
Once the Model 1000R is properly installed, it should operate
transparently—as if it were a standard cable connection. Operating
power is derived from the EIA/TIA-561 data and control signals; there is
no “ON/OFF” switch.
RJ-1
1
SIGNAL
RJ-45
SIGNAL
1 ----------------GND
†
1 ----------------N/C
2 ----------------RCV- 2 ----------------GND
†
3 ----------------XMT+ 3 ----------------RCV-
4 ----------------XMT- 4 ----------------XMT+
5 ----------------RCV+ 5 ----------------XMT-
6 ----------------GND
†
6 ----------------RCV+
7 ----------------GND
†
8 ----------------N/C
When connecting two Model 1000Rs, it is necessary to use a
“crossover” cable. The diagram below shows how a crossover cable
should be constructed for an environment where both Model 1000Rs
use a 4-wire RJ-11 connector. Similar logic should be followed when
using an RJ-45 connector or a combination of the two.
SIGNAL
PIN# COLOR
‡
COLOR
PIN# SIGNAL
GND
†
1 Blue---------------------White 6 GND
†
RCV- 2 Yellow ------------------Red 4 XMT-
XMT+ 3 Green ------------------Black 5 RCV+
XMT- 4 Red ---------------------Yellow 2 RCV-
RCV+ 5 Black -------------------Green 3 XMT+
GND
†
6 White -------------------Blue 1 GND
†
†
Connection to ground is optional
‡
Standard color codes—yours may be different
3.2 CONNECTION TO THE EIA/TIA-561 SERIAL PORT
Every serial device connected to the Model 1000R must have a
special interface cable that conforms to the EIA/TIA-561 standard. On
one end, this cable must have a male RJ-45 plug, on the other end, it
must have a connector that fits into your serial device. The diagram on
the following page shows the pin connections for the Model 1000R.
Connect each pin to the appropriate connection on your serial device.
6
5