Ericsson LBI-39101A manual Interconnecting The Equipment, Cable 19B804083P3 Color Coding

INTERCONNECTING THE EQUIPMENT LBI-39101

Table 4 – Cable 19B804083P3 Color Coding

PC		WIRE	TYPICAL
RS-422	CONSOLE		CEC/IMC
		COLOR
PORT	RS-422		CONNECTION
		(Also see
DB-25	SIGNAL		IDENTIFI-
		page 36)
PIN NO.			CATION *
1	cable shield	n/a	none **
2	TX-	white/blue	CRT 01	RX- DATA
14	TX+	blue	CRT 01	RX+ DATA
3	RX-	white/orange	CRT 01	TX- DATA
16	RX+	orange	CRT 01	TX+ DATA
7	ground	white/green	none **

*CEC/IMC Data Concentrator Card identification. See customer-specific system documentation print-outs for specific pin/terminal numbers.

**Wire not terminated at CEC/IMC punch block. Insulate and tie back at punch block.

NOTE

Cable 19B804083P3 is not compatible with earlier plug-in RS-422 boards used with the C3 Maestro console system. These earlier plug-in boards are manufactured by ICS and included model numbers RS422AT-P and RS422I-P. They can be easily identified by the presence of two LED indicators visible on the rear plate. In addition, the cable is also not compatible with earlier C3 Maestro console PCs equipped with main board RS-422 COM ports such as the Dasher PCs manufactured G￿by Data General.

If cable 19B802083P3 is not used for RS-422 hook-ups, see Figures 4 and 6A and/or the manufacturer's documentation for COM port connector pin-out details. Fabricate a cable as required and then use it to interconnect the C3 Maestro's RS-422 control data COM port to the appropriate CEC/IMC Data Concentrator Card as required. Shielded cabling is recommended. Per RS-422 specifications, cable length should be limited to 4000 feet (1219 meters) or less.

RS-422 TX-

(WHITE/BLUE)

RS-422 RX-

(WHITE/ORANGE)

SHIELD					SIGNAL GROUND
					(WHITE/GREEN)
1	2	3	4	5	6		7	8	9	10	11	12	13
14	15		16	17	18	19	20	21		22	23	24	25

NOTES:

1.VIEWED FROM BACK OF COMPUTER (MALE DB-25) OR WIRING SIDE OF MATING CONNECTOR (FEMALE DB-25).

2.TX LINES MUST CONNECT TO "CRT" RX LINES AT

RS-422 RX+	CEC/IMC CONCENTRATOR CARD OR PUNCH BLOCK, +
(ORANGE)	TO + AND - TO -.
	RX LINES MUST CONNECT TO "CRT" TX LINES AT
	CEC/IMC CONCENTRATOR CARD OR PUNCH BLOCK, +
RS-422 TX+	TO + AND - TO -.
	3. COLOR CODING INDICATES CABLE 19B804083P3 WIRE
(BLUE)
	COLORS.

Figure 4 – Plug-In RS-422 Board DB-25 Connector Pin-Out (B&B Electronics 3PXOCC1A Board)

NOTE

Do not over-tighten the screws on the DB-style connectors.

RS-232 Interfacing (Remote Console Hook-Ups Via 4-Wire Modems And RS-232 Interconnections)

When the C3 Maestro is installed at a remote location from the CEC/IMC, a serial control data link must be established via RS-232 connections and 4-wire full-duplex 9600 baud data modems. Since the C3 Maestro requires a dedicated or continuous serial link (non-dial-up), a 4-wire leased line (or equivalent) meeting 3002 data grade specifications must be employed between the CEC/IMC and the C3 Maestro in a remote console installation.

Figure 6B shows typical control data interconnections for a remote console installation using RS-232 connections and full-duplex 4-wire modems. At the CEC/IMC Data Concentrator Card, RS-232 connections are made at J13, not J12. Observe all notes listed in the figure if wiring an installation of this type. Recommended modem settings are:

∙Modem Options DCE Rate = 9600

Originate/Answer = Originate (CEC/IMC modem) Originate/Answer = Answer (C3 Maestro modem)

V.32 Fast Train = Enabled Auto Retrain = Enabled Internal/External Clock = Internal Dial-Up/Leased Line = Leased

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