MTD PS Spezifikationen PDF herunterladen (Seite 12)

CONFIGURATION MODES

The following modes of operation are available to the user:

LINE/SWITCHES MODES

The Line/Switches Jumper (SW5) Selects whether some of the board settings will be controlled externally through the J6

connector (Line), or via the on-board switches (Switches). If this switch is set to Line, then the integration time and the

binning mode must be set remotely via digital I/O. The still/free-run mode switch (SW3, 3-position switch) can also be set

externally when the Line mode is selected. Set SW3 to the middle position if it is desired to control this line externally.

STILL/FREE-RUN MODES

The “Still/Free-Run” switch (SW3) is a three-position switch that selects whether the board will operate in the still mode,

or a free-running mode.

If SW3 is placed in the middle position (“LINE”), the image capture mode is determined by the voltage on the STILL/FREE-

RUN pin on the input connector (J6-27). Setting this line LOW selects the free-run mode, and setting it HIGH selects the

still mode.

In still mode, the Image_Acquire control line must be strobed in order to acquire a single image. This is accomplished by

either pressing the on-board acquire button (S4) or, remotely, by bringing the Image_Acquire line low and then back high.

The detection of the falling edge of this signal starts the image acquisition process.

The still mode acquisition process is as follows:

1. The CCD is flushed of all accumulated charge.

2. The CCD is exposed to light during the integration time.

3. The image is clocked out of the CCD. The system then waits for the next Image_Acquire signal.

In the Free-Run mode, the system will continuously capture images and clock them out. No flushing is done, as the

clocking out of the previous image serves this same purpose.

See Figure 2: Clocking State Machine for the Clocking State Machine Diagram.

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 ... 55 56

Keine Kommentare

MTD PS Spezifikationen Seite 12