MV-D752-28 User’s Manual
REV: 1.0
Page 24/61
9
Camera function test
Two test modes are implemented in the camera. The functionality of the sensor can be
tested by activating the dummy line by means of the flag EN_DUMMY bit 4 register 7.
The lowest line (1023) is then replaced by a fixed gray level pattern, consisting
essentially of a sequence of light insensitive light and dark pixels. The Flip Image option,
bit 2 register 12, can be used to output the dummy line at the top of the image.
An Linear Feedback Shift Register (LFSR), activated by flags ENABLE2 = 1 and ENABLE3
= 1 (bits 2 und 3) register 6, was implemented to test the camera interface to the frame
grabber. Appendix F contains a detailed description of the LFSR.
10
Description of the camera sensor registers
The operating modes and functions of the camera are defined and set by internal
registers. The internal camera registers are initialized at camera boot up, which occurs
either when the camera is switched on or following a camera reset from the software
interface. The contents of the camera registers are copied into the registers from a non-
volatile re-writable memory (Boot-EEPROM). After camera boot up, the camera is fully
operational and the operating modes and functions correspond to the loaded initial
values.
Factory settings are free-running mode, 8-bit resolution and linear response. An example
of initial sensor control values is summarized in Table 27. Since every camera is
individually set up before delivery, parameters will vary from those shown in Table 27.
For that reason the user should back up the factory settings of the new camera
to a storage medium at the beginning of the hardware installation. This enables
the restoration of factory settings by the user in the event of incorrect
programming or storing of camera parameters by the user. Programs and
software routines supplied by Photonfocus AG should be used for backup and
restoration of the factory settings!
The basic settings of the camera can be changed by the user and stored in the Boot-
EEPROM. It is advisable, in the first instance, to set the camera functions or parameters
via the software interface and to test them in the application. Once the parameters have
been successfully tested, they can be stored as user settings. Photonfocus AG provides
programs and software routines for this purpose [SOFT], [PFREMOTE].
Low level
programming of the module hardware independently of the API function library
will not be supported by Photonfocus!
It is advisable to back up the user settings in
the same manner as that for the factory settings.
The internal modules for camera configuration work independently of the modules for
image acquisition. For ROI and exposure time, both modules are separated by shadow
registers, which are updated at the end of the image (falling edge of FRAME_VALID).