NTI VEEMUX VIDEO MATRIX SWITCH
Scan Mode
Scan Mode causes an output port to automatically switch from one input port to the next consecutive input port after a specified period of time (referred to as the dwell time). Port switching will continue indefinitely and no ports will be skipped, whether there are video sources connected to them or not. If desired, the VEEMUX can be configured to skip the scanning of specific ports using the RS232 Command Protocol (page 9) or Telnet (page 13).
Dwell time settings can be any value from 0 seconds (000) to 255 seconds. A setting of 000 seconds (the default setting) disables Scan Mode for that output port. If Scan Mode is disabled for a specific port, then the video to that output will only change as decided by the administrator.
To configure Scan Mode from the front panel LCD:
Press MENU, the following lines will be displayed:
1)Set Baud Rate
2)Set Unit Addr
Press MENU again, the following line will be displayed:
3)Set Scan Mode
Press 3 to select that menu item. The following request will be displayed:
Select Port
Select the output to be programmed using the numeric keys, then press ENTER. The display will show the current Dwell Time value for that output and ask for a new value.
Current Time: 16
New Time:
Using the numeric keys, enter a value between 0 and 255 and press ENTER. Leading zeros are allowed (000) but the number should not exceed 3 digits. The Scan Mode dwell setting value 0 will disable Scan Mode for that output port.
Scan Mode settings can also be configured through the RS232 Command Protocol (page 10), Telnet commands (page 13), or through the Web Interface (page 18).
NOTE: Scan Mode configuration settings can only be saved if they are assigned a memory location via the Keypad Control (page 7). Otherwise when the power is cycled to the VEEMUX, all Scan Mode settings will be erased.
TIP: If the Scan mode settings are stored as memory location 0, they will be loaded each time the VEEMUX is powered ON.
RS232 Control
RS232 enables the VEEMUX to be remotely controlled via RS232. To control the VEEMUX via RS232 the user has three options:
•write a program that runs on a PC using the Command Protocol (page 9)
•use the Matrix Switcher's Control Program (page 11) provided on the CD
•use the SerTest program (page 11) provided on the CD
Remote Connection
The RS232 Interface is designed to control the switch via serial (RS232) daisy chain connection from any host computer or other controller with an RS232 communications port. There is, however, a restriction that must be followed:
The pin outs for the
RS232 Connector
PIN | SIGNAL | FUNCTION | PIN | SIGNAL | FUNCTION | |
1 | None | no connection | 6 | DTR | Data Terminal Ready | |
2 | TXD | Transmit Data (RXD at host) | 7 | CTS | Clear to Send | |
3 | RXD | Receive Data (TXD at host) | 8 | RTS | Request to Send | |
4 | DSR | Data Set Ready | 9 | none | no connection | |
5 | GND | Signal Ground |
|
|
|
8
