Extron electronic CrossPoint 124 manual Reference Information, cont’d, Closing the switcher

Ribbon cable

Connector

Self-latching receptacle

Ribbon cable

Self-latching receptacle

Reference Information, cont’d

Closing the switcher

1.	Reinstall any cables removed. To plug a self latching cable into the desired
	Ribbon cable	receptacle, align the holes in the connector with the pins in the
		receptacle, and press evenly until the receptacle tabs lock into
		place.
Self-latching receptacle
2.	Place the top cover (CrossPoint 84, 88, 124, and 128) and/or front cover (all
	models) in place and replace all the screws removed in Opening the switcher on
	page B-2.

Swapping the serial ports

The CrossPoint switchers are factory configured for RS-232 use. If you want to use RS-422 and the switcher is configured for RS-232, or if you want to use RS-232 and the switcher is configured for RS-422, do the following:

1.Follow the appropriate instructions in Opening the Switcher on page B-2 to gain access to the interior of your switcher.

2.Locate the switcher’s front panel board (figure B-3).

Label includes

Key Extron part number &

Software version (Vx.xx)

	Pin 1 (red stripe on ribbon cable )
19-965-01
Vx.xx
	J1 RS-422
Slots for removing IC	receptacle
	J2 RS-232
with PLCC IC puller
	receptacle
U7
	19-965-01
	Vx.xx

Figure B-3 — Front panel board

3.On the side of the front panel board that faces the rear of the switcher, locate the RS-232 ribbon cable. On any CrossPoint model, the RS-422 ribbon cable receptacle, which is normally empty, is located to the left of the RS-232 ribbon cable receptacle.

4.To remove the cable from the current receptacle, press the two receptacle tabs

outward as shown at the left, and pull up gently on the cable connector to remove it from the receptacle.

5. To plug the cable into the desired receptacle, align the holes in the connector with the pins in the receptacle, and press evenly until the receptacle tabs lock into place.

6. Reinstall the switcher’s cover. See Closing the switcher, above.

7. Attach the power cord to the switcher and to the AC power source. Make sure the switcher is working properly.

B-4 CrossPoint Matrix Switchers • Reference Information