Allied Vision Technologies MF-145B2 Manuel d'instructions télécharger pdf (Page 95)

Configuration of the camera

MARLIN Technical Manua

Page 87

11 Configuration of the camera

All camera settings are made by writing specific values into the corresponding registers. This

applies to both values for general operating states such as video formats and modes, exposure

times, etc. and to all extended features of the camera that are turned on and off and controlled

via corresponding registers.

11.1 Camera_Status_Register

The interoperability of cameras from different manufacturers is ensured by IIDC, formerly DCAM

(Digital Camera Specification), published by the IEEE-1394 Trade Association.

IIDC is primarily concerned with setting memory addresses (e.g. CSR: Camera_Status_Register)

and their meaning.

In principle all addresses in IEEE-1394 networks are 64 bits long.

The first 10 bits describe the Bus_Id, the next 6 bits the Node_Id.

Of the subsequent 48 bits, the first 16 are is always FFFFh, leaving the description for the

Camera_Status_Register in the last 32 bits.

If in the following, mention is made of a CSR F0F00600h, this means in full:

Bus_Id, Node_Id, FFFF F0F00600h

Writing and reading to and from the register can be done with programs such as “FireView” or by

other programs that are developed using an API library(e.g. FirePackage).

Every register is 32 bit (Big Endian) and implemented as follows:

Bit

...

Bit

MSB LSB

Most Left

Figure 47: 32-bit register

This requires, for example, that to enable ISO_Enabled mode (ISO_Enable / Free-Run), (bit 0 in

1 2 ... 90 91 92 93 94 95 96 97 98 99 100 ... 130 131

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Allied Vision Technologies MF-145B2 Manuel d'instructions Page 95