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SIGNAL PIN# PIN# SIGNAL
GND* 1.........................6 GND
RCV- 2.........................4 XMT-
XMT+ 3.........................5 RCV+
XMT- 4.........................2 RCV-
RCV+ 5.........................3 XMT+
GND* 6.........................1 GND
*Connection to Ground is Optional
3.1.2 TERMINAL BLOCK TWISTED PAIR CONNECTION
If your application requires you to connect one or two pairs of bare
wires to the Model 222N9, you will need to access the internal terminal
blocks. The instructions on the following pages will tell you how to
open the case, connect the bare wires to the terminal blocks, and
fasten the strain relief collar in place so that the wires won't pull loose.
Note: The terminal block configurations are different for the
222N9M (male) and 222N9F (female).
1. Open the unit by gently inserting a screw driver between the DB-9
connector and the lip of the plastic case (See below). You don't have to
worry about breaking the plastic, but be careful not to bend the D-sub
connector.
(Continued)
5
1
2
3
4
5
6
1
2
3
4
5
6
7
8
+- -+
XMT G RCV
+- -+
XMTGRCV
222N9M 222N9F
Once the unit has been opened, you will be able to see the
terminal block located at the rear of the PC board.
2. Strip the outer insulation from the twisted pairs about one inch
from the end.
3. Strip back the insulation on each of the 2 twisted pair wires
about .25".
4. Connect
one pair
of wires to XMT+ and XMT- (transmit positive
and negative) on the terminal block, making careful note of which color
is positive, and which color is negative.
6