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Reference Information, cont’d
Matrix 50 Series Switchers • Reference InformationB-8
9. If not already done, reconnect the AC power, input, and output cables.
Swapping the serial ports
The Matrix 50 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 instructions in Opening the switcher on page B-2 to remove the top
cover.
2. Locate the switcher’s front panel board (figure B-7).
J1 RS-422
receptacle
Slots for removing IC
with PLCC IC puller
Label includes
Extron part number &
Software version (Vx.xx)
J2 RS-232
receptacle
Pin 1 (red stripe on ribbon cable )
19-965-01 Vx.xx
19-965-01 Vx.xx
U7
Key
JMP9
JMP8
JMP7
JMP6
JMP5
JMP4
JMP3
JMP2
Figure B-7 — Front panel board, Matrix 50 Series switcher
3. On the side of the front panel board that faces the rear of the switcher, locate
the RS-232/RS-422 ribbon cable. The RS-422 ribbon cable receptacle, which is
normally empty, is located to the left of the RS-232 ribbon cable receptacle.
4. Remove the RS-232/RS-422 ribbon cable by pressing the two RS-232/RS-422
receptacle tabs outward as shown at the left, and pull up evenly
on the cable connector to remove it from the current
receptacle.
5. Plug the cable in to the desired receptacle by aligning
the holes in the connector with the pins in the RS-232 or
RS-422 receptacle, and pressing evenly until the
receptacle tabs lock into place.
6. Reinstall the switcher’s cover. See Closing the switcher
on page B-3.
If you choose to check for proper operation before putting the cover back
on, ensure that tools and hands are outside the switcher, and then connect
the power cord to the unit and to an AC source. The switcher should
power up normally. Unplug the AC power cord, and reinstall the
switcher.
7. Attach the power cord to the switcher and to the AC power source. Ensure
the switcher is working properly.
8. If the switcher was removed from a rack, remove its power cord, reattach the
switcher to the rack, and reconnect the power cord.
9. Reconnect the input and output cables.
Ribbon cable
Self-latching receptacle
Ribbon cable
Connector
Self-latching receptacle