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Control Bits
X<ControlBits>0<CR>
Where:
ControlBits =
 Status control bits. This is a bitmapped value, given in decimal.
0
Reserved, always set to 0.
IR
0=Normal IR (default), 1=IR control disabled.
KB
0=Normal Keyboard (default), 1=Keyboard selection disabled.
AS
0=Auto-status off (Polled Mode), 1=Auto-status transmissions enabled.
X?<CR>
Request current ControlBits setting
The DVS5.1 can be set to send a status message when any of the following occur (outside of an RS-232 command):
• A new channel is selected. 
Sends a Channel Status string
• The power state changes.
Sends a Power Status string
• The state of the lamp intensity changes.
Sends a Lamp Status string
• A front panel button is pressed.
Sends a Button Status string (Note 1)
The responses are identical to the responses you receive when you request the information using the “?” parameter 
for each of the above commands.
When ‘X0<CR>’ is issued, these above actions will not automatically be sent, but will be buffered.
When ‘X1<CR>’ is issued, any pending status messages will be sent, and from then on, any of the above actions 
will cause a status message to be immediately sent.
Status changes made through the RS-232 will not cause the above status strings to be automatically sent. For in-
stance, a button press will send a Channel Status string, an IR remote Channel change will send a Channel Status 
string, however the command ‘C+<CR>’ will only be followed by the ‘+<CR><LF>’ acknowledgement string.
See the section on DVS5.1 status strings for the syntax of the status strings.
Note 1: The Button Status string is only sent automatically when the DVS5.1 front panel is disabled and the ’AS’ 
bit is set to ‘0’.
Query Command Status
Q<CR>
Request information on DVS5.1 command states
If the command ‘X0<CR>’ has been issued then command statuses will not be immediately sent but instead buff-
ered. This command returns a bitmap that indicates what statuses are buffered and need to be read.
See the section on DVS5.1 status strings for the syntax of the returned string.
Save Current State As Power On Default
S<CR>
Save DVS5.1’s current state as the power on default
Request Version
V<CR>
Request the DVS5.1’s version
Bit
7
6
5
4
3
2
1
0
0
0
0
0
0
IR
KB
AS