Owner's manual

Vinten Broadcast Ltd
free-d™ Installation Manual V1.4.4
Page 36 of 46
<EH><EL> EEPROM Address
<D0>....<DF> 16 bytes of EEPROM data
<CK> Checksum
The EEPROM can only be programmed or read 16-bytes at a time. The
EEPROM Address within the message corresponds to the address of the first
byte of data transferred.
A.3.8 Type D9 - request EEPROM data
The D9 message is used to request the transfer of EEPROM data from the
free-d™ unit. The free-d™ unit replies with a D8 message containing 16 bytes of
EEPROM data.
The message contains 5 bytes as follows:
<D9> Message type
<CA> Camera ID
<EH><EL> EEPROM address
<CK> Checksum
The EEPROM Address determines the address of the first data byte to be
transferred.
A.3.9 Type DA - camera calibration data
The DA message is used for transferring Camera Calibration data from the
free-d™ unit. The data corresponds to the camera currently in use. If a valid
camera is not connected to the free-d™ unit, or if the camera has only recently
been connected, the data is invalid.
The message contains 30 bytes as follows:
<DA> Message type
<CA> Camera ID
<CH><CM><CL> Lens X-Centre
<DH><DM><DL> Lens Y-Centre
<SH><SM><SL> Lens X-Scale
<TH><TM><TL> Lens Y-Scale
<AH><AM><AL> Lens Distortion A (radial, square term)
<BH><BM><BL> Lens Distortion B (radial, fourth power)
<XH><XM><XL> X-Offset from auxiliary camera to studio camera
<YH><YM><YL> Y-Offset from auxiliary camera to studio camera
<ZH><ZM><ZL> Z-Offset from auxiliary camera to studio camera
<CK> Checksum