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4.2 INSTALLING THE MODEL 1080ARC INTO THE CHASSIS
The Model 1080ARC 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 1080ARC into the rack chassis:
1. Slide the rear card into the back of the chassis along the metal rails
provided.
2. Secure the rear card using the metal screws provided.
3. Slide the 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 1000R16P chassis allows “hot swapping” of
cards, it is not necessary to power down the rack when you
install or remove a Model 1080ARC.
4.3 WIRING THE MODEL 1080ARC
Each of the rear interface cards compatible with the Model 1080ARC has
one RS-232 port and one 4-wire (twisted pair) port. These cards provide
a female DB-25 for RS-232 connection.
RS-232 Connection
The Model 1080ARC uses a DB-25 female to connect the RS-232 inter-
face to your computing hardware. It is pinned according to the RS-
232C/V.24 interface standard. For specific interface pin-outs, please
refer to the diagrams in Appendix D on page 37 of this manual.
The Model 1080ARC is wired to connect to a DTE. If your RS-232 out-
put device is a DTE, use a straight though cable to connect to the Model
1080ARC. If your RS-232 output device is DCE, call Technical Support
at (301) 975-1007 for specific installation instructions.
Twisted Pair Connection
The Model 1080ARC operates over one or two twisted pair. In all appli-
cations, the twisted pair wire must be 26 AWG or thicker, unconditioned,
dry, metallic wire. Both shielded and unshielded wire yield favorable
results.