Photon Focus MV-D752-28, User Manual, Page: 30 / 61

MV-D752-28 User’s Manual
REV: 1.0 Page 30/61
Before you modify register 1 (bits 0 to 3), please contact Photonfocus Ltd. because of a
possible malfunction or limited function of the sensor after modifying these values.
With the help of the dummy line, the transfer of data from the sensor to the frame
grabber card can be easily tested.
When the bits 5 to 7 are switched on (or off), a possible bias re-tuning of the video
amplifier is required.
10.2.4 Register Addresses 8 and 9: DAC interface
The registers 08H and 09H are used for the DAC access and for adjustments to the
camera in the various operating modes. To access the DAC, please refer to Appendix E.
Please do not modify these values unless you really need to change some specific values.
A wrong value can cause a malfunction of the camera!
The DAC has 8 channels (Channels 0 – 7), corresponding to the functions listed in Table
16. To avoid malfunctioning of the camera, voltages outside the stated ranges should not
be used.
Table 16: Assignments of the DAC channels
Channel Name Description Voltage range/V
0 VB1 External force VB1, pixel bias 0.6 – 0.8
1 VB2 External force VB2, column bias 2.0 – 2.4
2 VB3 External force VB3, output bias 0.7 – 0.9
3 VSH Shutter voltage 0.0 – 4.0
4 VLOG LinLog voltage 0.0 – 4.0
5 Global_offset Offset voltage for video output amplifier 1.3 – 1.5 Low Gain
2.0 – 2.2 High Gain
6 Video_black Not used at the moment -
7 Sync_offset Not used at the moment -
10.2.5 Register Addresses 12-14: Mode register extended functions
The registers 12 – 14 contains further bits for camera adjustment. Register 12 contains
further basic settings for the camera. Register 13 contains the control bits for the
extended trigger modes and functions to deactivate the pre-load of the sensor column
addresses. Register 14 contains the flag for switching communication to the ADC module.
Table 17: Mode register 2 (register address REGADDR = 12D = 0CH)
Register address 12 - MODE2_REG
bit Name
Description Default
0 SYNC_EXTERN = 1
Î
external synchronization 0
1 CONST_FRAMERATE = 1
Î
constant frame rate 1
2 FLIP_IMAGE = 1
Î
output picture upside-down 0
3 Not used - 0
4 EN_LINE_HOPPING = 1
Î
switch on line hopping 0
5 Not used - 0
6 EN_GLOBAL_RESET = 1
Î
switch on global reset of the sensors 1
7 EN_MCLK = 1
Î
activate external pixel clock 0