Patton electronic 1004ABRC Switching the Power Supply On and Off, 4.3 RS-232 CONNECTION, Signal

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 Supplies for fuse and power card replacement information.

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:

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

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.

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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.

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.

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

a2-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
†Connection to ground is optional		8	N/C
	1		1
			2
	2		3
	3		4
	4		5
	5		6
	6		7
			8
		16