Kramer Electronics VP-411DS - Manual (Page 11)

Connecting the VP-411DS 4x1 Automatic UXGA / Audio Switcher
9
5.2 Setting the PRIORITY DIP-switches
Figure 4 and Table 3 describe the VP-411DS unit DIP-switches and the priority setup
respectively.
Figure 4: VP-411DS DIP-switches
Table 3: DIP-switch Priority Setup
DIP-switch Position
Priority sequence 1 2 3 4
Manual operation OFF OFF OFF OFF
1, 2, 3, 4 ON OFF OFF OFF
2, 3, 4, 1 OFF ON OFF OFF
3, 4, 1, 2 OFF OFF ON OFF
4, 1, 2, 3 OFF OFF OFF ON
When all the DIP-switches are set to OFF, switching is manual and the inputs are
switched to the output via the front panel INPUT SELECTOR buttons.
The priority is always set from the lowest number to the highest. For example, if input
2 is set to be the primary input (DIP-switch 2 is set to ON and DIP-switches 1, 3 and 4
are set to OFF), the secondary input is IN 3. IN 4 is the third in the sequence, and IN 1
will be last in priority. In this case, if the signal on IN 2 is cut off, the switcher
automatically switches IN 3 to the output, and if that is also disconnected, IN 4 is
automatically switched to the output (followed by IN 1, if necessary). If, in the
meantime, the IN 2 signal is restored, IN 2 will take priority once again.
When sending a serial switching command while the VP-411DS is in Priority Mode,
the VP-411DS checks for an active signal on the selected input for a user-defined
period of time (the default is 30 seconds). Once an active signal is detected, the
selected input will be switched to the output. If no active signal is detected during the
set time period, the previously selected input will remain switched to the output
according to the priority setup, and the VP-411DS will send an appropriate RS-232
command to indicate its current switching status or an “all inputs invalid” command if
there is no valid input.