Extron Electronics Matrix 12800 Series User Guide - Manual (Page 33)

Installation, cont’d
Matrix 12800 Switchers • Installation 2-18
PRELIMINAR
Y
Other Settings
Serial port protocol switches
The controller card has a DIP switch that allows you to select between the RS-232
and RS-422 protocol for the rear panel RS-232/RS-422 ports. RS-232 is the default
setting. See “ Swapping the serial port protocol (RS-232/RS-422) ” in chapter 6,
“Upgrades and Maintenance”, to select a different serial port protocol.
Baud rate switches
The controller card has two DIP switches that allow you to select among 9600,
19200, 38400, and 115200 baud for the rear panel RS-232/RS-422 ports. 9600
baud is the default setting. See “ Changing the serial port baud rate ” in chapter 6,
“Upgrades and Maintenance”, to select a different baud rate.
Sync termination switches
Each input card supports 32 (two columns on the back panel) physical inputs. In
a sync BME, the first eight physical inputs on each input card are equipped with
sync termination DIP switches. Each switch provides the option of selecting
either 510 ohms or 75 ohms. See “ Changing the Sync Termination ” in chapter 6,
“Upgrades and Maintenance”, to tailor the sync termination for non-TTL input
sync.
The physical inputs with sync termination switches are:
• Inputs 1 through 8 on input card 1
• Inputs 33 through 40 on input card 2
• Inputs 65 through 72 on input card 3
• Inputs 97 through 104 on input card 4
The 75 ohms position is required only for an input with non-TTL sync, greater than
5V p-p. The normal position is 510 ohms. The switches provide a way to condition
non-TTL sync levels greater than 5V p-p, enabling the sync to be properly passed
from the input to all selected outputs.
N An input that produces an out-of-sync display, a display that is rolling
vertically, tearing horizontally, or both, could indicate a non-TTL sync input.
A device that is known to output non-TTL sync levels (greater than 5V p-p)
should be connected to one of the inputs with sync termination switches, and the
switches for that input should be set to the 75 ohm position. If you’re not sure,
check the specifications in the user guide for the input device.
IP parameters initialization
The Matrix 12800 System Virtualization/Control software, which runs in a
Windows-type computer and communicates with the matrix switcher via the
RS-232/RS-422 ports or the Ethernet port on BME 0, provides an easy way to create
or edit the IP parameters required for WAN or LAN control of the switcher.
See “
Ethernet protocol settings ” in chapter 3, “Virtualization/Control Software”.
N If your Matrix 12800 switcher was previously set up for RS-232, and your
computer comm port uses RS-422, you must change an internal DIP switch.
See chapter 6, “
Upgrades and Maintenance ”, for details.