Patton electronic 1004ABRC User Manual

Page 9

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.

4.2 INSTALLING THE MODEL 1004ABRC INTO THE CHASSIS

The Model 1004ABRC 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 1004ABRC into the
Model 1000R16 rack chassis:

Slide the rear card into the back of the chassis along the metal
rails.

Secure the rear card using the metal screws provided.

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.

Push the front card

gently

into the card-edge receptacle of the rear

card. It should “click” into place.

Secure the front card using the thumb screws.

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 Patton's Modified Modular
Interface Standard (based on the EIA/TIA-561Standard). For specific
interface pin-outs, please refer to the diagrams in Appendix D.

(continued)

The Model 1004ABRC 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 (such as a DB-25 to modular cable). If your
RS-232 output device is DCE, you will require a null modem connec-
tion. Call Patton Technical Support at (301) 975-1007 for specific
installation instructions.

4.4 TWISTED PAIR CONNECTION

The Model 1004ABRC operates half or full duplex over one or two

twisted pair. 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.

4.4.1 POINT-TO-POINT TWISTED PAIR CONNECTION

The 6-position RJ-11 and 8-position RJ-45 jack options for the

Model 1004ABRC (always the

upper

jack on the rear interface card)

are prewired for a standard TELCO wiring environment. Connection of
a 2-wire or 4-wire twisted pair circuit between two or more Model
1004ABRCs requires a

crossover cable

as shown in the following

charts.

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

†

Connection to ground is optional

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.

NOTE:

Since the Model 1000R16 chassis allows “hot swap-

ping” of cards, it is not necessary to power down the rack when
you install or remove a Model 1004ABRC.

NOTE:

The Model 1004ABRC can only communicate in a

closed data circuit with another Model 1004ABRC. Dial-up ana-
log circuits, like those in a standard Hayes-type modem, are

not

acceptable.

For further information, see Appendix B.

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