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5.6 COMMUNICATION
This was discussed briefly in the section under “REGISTER SELECT” and will be fully explained here. When you
choose your register type under the REGISTER SELECT menu, this automatically formats the VSI-Pro to the
appropriate settings needed to communicate with your register. There may be times when you will need to amend
these settings for a specific register.
To access the Communication menu, press the “Up” or “Down” button to move the cursor to “COMMUNICATION”
and press “Set”. The following menu will appear:
INTERFACE TYPE
Choices: RS-232, PASSIVE TAP, RS-485
To set the interface type for your particular device, press the “Up” or “Down” button to move the cursor to “INTERFACE
TYPE” and press and release “Set”. The cursor will start flashing. You can now use the “Up” or “Down” button to
make your selection. When your selection appears, press “Set” again. The cursor will stop flashing and you can
proceed to the next menu item for programming. RS-232 and RS-485 are defined by IEEE standards, however, the
Passive Tap is a high impedance (100K) input with full diode protection. Refer to Table 1 and 1A for respective pin-
outs of RS-232 or RS-485.
RX BAUD RATE
Choices: AUTO, 150, 300, 600, 1200, 2400, 4800, 9600, 14.4K, 19.2K, 28.8K, 38.4K
To set the baud rate for your particular device, press the “Up” or “Down” button to move the cursor to “RX Baud
Rate” and press “Set”. The cursor will start flashing. You can now use the “Up” or “Down” button to make your
selection. When your selection appears, press “Set” again. The cursor will stop flashing and you can proceed to the
next menu item for programming.
TX BAUD RATE
Choices: AUTO, 150, 300, 600, 1200, 2400, 4800, 9600, 14.4K, 19.2K, 28.8K, 38.4K
This is a new feature that allows you to set the transmit baud rate to a separate device if you are looping the data
back out of the VSI-Pro.
To set the TX Baud Rate for your particular device, press the “Up” or “Down” button to move the cursor to “TX BAUD
RATE” and press “Set”. The cursor will start flashing. You can now use the “Up” or “Down” buttons to make your
selection. When your selection appears, press “Set”. The cursor will stop flashing and you can proceed to the next
menu item for programming.
VSI-Pro VIDEO SERIAL INTERFACE
PROGRAMMING
NOTE ?
When selecting 38.4K, the TX and RX Baud rate must both be 38.4K. However, with any
lower baud rate the TX and RX can be any different baud rate.
Figure 57: COMMUNICATION Sub-Menu
INTERFACE TYPE RS-232
RX BAUD RATE AUTO
TX BAUD RATE AUTO
PARITY
NONE
DATA BITS 8
HANDSHAKE ON
AUTO LINEFEED ON
EXIT