Owner's manual

Vinten Broadcast Ltd
free-d™ Installation Manual V1.4.4
Page 37 of 46
A.3.10 Type DB - diagnostic mode
The DB message is used to switch the free-d™ unit into a diagnostic mode, or
to return the diagnostic mode currently set.
The message contains 4 bytes as follows:
<DB> Message type
<CA> Camera ID
<DM> Diagnostic mode
<CK> Checksum
Only the two most-significant bits of Diagnostic Mode are defined. The
possible modes are as follows:
00 Normal operation
40 Set video data to 0x55
80 Set video data to 0xAA
C0 Set video data to test pattern
The free-d™ unit acknowledges receipt of a DB message by replying with a DB
message containing the new mode.
A.3.11 Type A4 - poll / command (Radamec compatibility mode)
The A4 message is used to poll the Free-d unit for data, or to send a
command to the free-d™ unit, in a way compatible with the Vinten Radamec
RP2VR robotic pedestal.
The message contains 4 bytes as follows:
<A4> Message type
<CA> Camera ID
<CD> Command
<CK> Checksum
Commands presently defined are:
00 Stop Radamec-compatible stream mode
01 Start Radamec-compatible stream mode
02 Request camera ID
FF Poll for Radamec-compatible position update
For commands 00 and 01 the free-d™ unit acts on the message but does not
reply.