Owner's manual

Vinten Broadcast Ltd
free-d™ Installation Manual V1.4.4
Page 29 of 46
A.3 Message structures
A.3.1 Type D0 - poll / command
The D0 message is used to poll the Free-d unit for data, or to send a
command to the free-d™ unit.
The message contains 4 bytes as follows:
<D0> Message type
<CA> Camera ID
<CD> Command
<CK> Checksum
Commands presently defined are:
00 Stop stream mode
01 Start stream mode
02 Stop freeze mode
03 Start freeze mode
D1 Poll for position update (and stop stream mode)
D2 Request system status
D3 Request system parameters
D4 Request first target data
D5 Request next target data
D6 Request first image point
D7 Request next image point
D8 Request next EEPROM data
DA Request camera calibration values
DB Request diagnostic mode