Specifications

98 ST-133/ST-133A Controller Manual Version 2.H

Images

EXT. SYNC.

Mechanical

Shutter

8 ms

SCAN

Laser Output

Image 1 Image 2

5 µs 5 µs

Laser 1 Laser 2

>200 ns

200 ns

READY

Figure 53. Timing diagram for IEC experiment with two lasers

Example 2: As shown in Figure 54, the

signal from the controller can be used

to trigger the controller by connecting it back into the EXT SYNC connector. At

the same time, it can be used to trigger a DG535.

Delay Generator

(i.e.,DG535)

Camera

Head

Controller

Ext.

Laser 2

Laser 1

Computer

EXT SYNC

READY

Figure 54. Another hardware setup for an IEC measurement

Note: This setup will not work in the EEC mode or the ESABI mode.

Summary of IEC Timing mode

• Gives the user the ability to capture two images before readout.

• Requires that the switch on the back of the DIF camera be set to INACTIVE.

• The Exposure Time set in software on the Experiment Setup Main tab page becomes

the exposure time of the first image and also the wait before closing the mechanical

shutter.

• An external trigger is required to initiate the imaging process. The

goes low

when the system is ready. Once

is low, an external trigger applied to the

EXT SYNC connector initiates the double image capture.