MegaPlus ES 1020
User’s Manual
Redlake MASD, Inc.
Page
17
91000134-001 Rev. A
Trigger Exposure Modes
The ES 1020 triggered exposure modes (TEM) work differently from the free run mode in that the TEM is
based on the pixel clock (divided by 64) as opposed to the line timing. There are separate exposure
registers for the TEM and FRM.
NOTE:
Externally triggering the camera may only be done via the Camera Link interface. The Strobe
and Trigger cables provide OUTPUT signals only.
Trigger Programmed Exposure (TPE)
The TPE mode is used when a predetermined triggered exposure is required. The exposure time is
programmed into the TPD (Transfer Pulse Delay) register and the TPE mode is set. In this mode, the
camera enters a continuous flush mode (CFM) while waiting for the external trigger line to be activated.
The external trigger line is sampled and if active, the camera begins an exposure as set by the TPD
register. After the exposure period is complete, the image is clocked out. As the exposure is started, the
external strobe signal is asserted. The external strobe signal can be used to activate a strobe light.
Trigger Programmed Exposure Mode
Trigger Manual Exposure (TME)
This
mode works exactly as the TPE mode with the following exception; The exposure may be extended
by keeping the external trigger line asserted. Once the external trigger is de-asserted the ES 1020
completes the programmed exposure (PE) as defined by the TPD register value. To control the exposure
in this mode it is recommended that the TPD register be set as small as possible (0x006) so that the
camera executes only a very short-programmed exposure after the de-assertion of the external trigger.
Manual Shutter Mode
•
Note that the trigger polarity can be set via command
Manual Exposure
Trigger*
FVAL
Data
Trigger*
Strobe
FVAL
(PE)
Data
Strobe
Programmed Exposure (PE)
Summary of Contents for MegaPlus ES 1020
Page 1: ......
