B
NOTE: The Tx pin on the switcher connects to the Rx connector on the PC; the Rx pin on the switcher connects to the Tx connector on the PC.
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| NOTE: Connect a ground wire between the switcher | |
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Tx Rx |
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| use cable that has a drain wire, tie the drain |
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| wire to ground at both ends. |
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| Green | Ground |
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| Rx Receive | Transmit (Tx) 3 | |||
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Connector
To Computer
Figure 4. RS-232 Connector Wiring
This port has the following
•9600 baud
•1 stop bit
•No parity
•8 data bits
See “Command and Response Table for SIS Commands” on page 19 for the SIS commands used to communicate with the MSW switcher with
CONTACT
1 | 2 | 3 | 4 |
CContact connector — Connect a remote contact closure device to the MSW for remote control of the switcher. You can also daisy chain the unit to other MSWs using this
NOTE: The switcher must be in normal (manual) mode for contact closure to work (see “Mode Selection” on page 8).
To select an input using a contact closure device, such as an Extron CCR 204 Contact Closure Remote Control or a locally constructed device, momentarily short the pin for the desired input number to logic ground (pin 5). To force one of the inputs to be always selected, leave the short in place. The short overrides any front panel input selections.
You can also daisy chain multiple MSWs by using the contact connector. This allows for front panel control of all switchers (for example, touch the input button on one MSW to switch all MSWs). Wire pin 1 to pin 1, pin 2 to pin 2, and so on.
D
E
MSW 4V rs and MSW 4SV rs • Panel Features | 5 |