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4.4 TWISTED PAIR CONNECTION
The Model 2017RC operates half or full duplex over two twisted
pairs. In
all
applications, the twisted pair wire must be 26 AWG or
thicker, unconditioned, dry, metallic wire. Both shielded and unshielded
wire yield favorable results.
Note:
The Model 2017RC can only
communicate in a closed data circuit with another Model 2017RC or a
compatible 20mA device. Dial-up analog circuits, like those in a
standard Hayes-type modem, are
not acceptable.
For further
information, see Appendix B.
4.4.1 POINT-TO-POINT TWISTED PAIR CONNECTION
The 6-position RJ-11 and 8-position RJ-45 jack options for the
Model 2017RC (always the
upper
jack on the rear interface card) are
prewired for a standard TELCO wiring environment. Pin descriptions of
the RJ-11 and RJ-45 modular jacks.
RJ-11
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
Switching the Power Supply On and Off
The power switch is located on the front panel. When plugged in
and switched on, a red front panel LED will glow. Since the Model
1000R16 is a “hot swappable” rack,
it is not necessary for any cards to
be installed before switching on the power supply
. The power supply
may be switched off at any time without harming the installed cards.
NOTE:
Please refer to the Model 1000RP Series User Manual
AC
and DC Rack Mount Power Supplie
s for fuse and power card
replacement information.
4.2 INSTALLING THE MODEL 2017RC INTO THE CHASSIS
The Model 2017RC is comprised of a front card and a rear card.
The two cards meet inside the rack chassis and plug into each other by
way of mating 50 pin card edge connectors. Use the following steps as
a guideline for installing each Model 2017RC into the Model 1000R16
rack chassis:
1. Slide the rear card into the back of the chassis along the metal rails.
2. Secure the rear card using the metal screws provided.
3. Slide the front card into the front of the chassis. It should meet the
rear card when it's almost all the way into the chassis.
4. Push the front card
gently
into the card-edge receptacle of the rear
card. It should “click” into place.
5. Secure the front card using the thumb screws.
Note: Since the Model 1000R16 chassis allows “hot swapping” of
cards, it is not necessary to power down the rack when you
install or remove a Model 2017RC.
4.3 RS-232 CONNECTION
The RS-232 ports are always the
lower
ports on the interface card.
The 10-pin RJ-45 is pinned according a modified modular interface
standard. For specific interface pin-outs, please refer to the diagrams
in
Appendix D
.
The Model 2017RC is wired as a DCE (Data Communications
Equipment). Therefore, it wants to connect to a DTE (Data Termination
Equipment). If your RS-232 output device is a DTE, you may need to
use a special cable. If your RS-232 output device is DCE, you will
require a null modem connection. Call Patton Technical Support at
(301) 975-1007 for specific installation instructions.
