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CSG14K_CSG8K

Functional Description

Datasheet

• PUBLIC

DS000571

• v1-00 • 2020-Dec-15

112

│ 45

●

The frame rate will not change: the first GLOB of the new sequence will be exactly 'frame

time' after the last GLOB of the active sequence.

●

If (1) > (2)

●

The new EXPOSURE will start immediately.

●

Because (1) is larger than (2), this EXPOSURE will end after the last frame would have

finished.

●

This causes a temporary drop in frame rate.

The figure below shows the following cases (in all cases, the requested sequence is 2 frames long):

Figure 47:

Timing Diagram: Special Control Timing in Triggered Internal Mode

(a)

Normal timing

→ Capture 2 frames and go back to idle

when done

(c)

TI_s1, (1) < (2)

→ New EXPOSURE delayed to

guarantee programmed frame rate

(b)

TI_s0

→ New request before last frame is active;

extend sequence length to 4

(d)

TI_s1, (1) > (2)

→ Temporary frame rate decrease to

guarantee complete exposure time

Programmed External vs Triggered Internal

The attentive reader may have noticed that the Triggered Internal mode with a sequence length of 1 is

quite similar to the Programmed External mode. This is mainly true, yet both differ in the way they

handle new REQ_EXP requests if the sensor is not IDLE.

EXPOSURE (2)

EXPOSURE (3)

EXPOSURE (1)

REQ_EXP

SENSOR STATE

EXPOSURE (0)

IDLE

GLOB

READOUT (0)

GLOB

READOUT (1)

IDLE

> Frame time

(a)

EXPOSURE (1)

REQ_EXP

SENSOR STATE

EXPOSURE (0)

IDLE

GLOB

READOUT (0)

GLOB

READOUT (1)

(b)

GLOB

READOUT (2)

GLOB

READOUT (3)

IDLE

EXPOSURE (2)

EXPOSURE (3)

EXPOSURE (1)

REQ_EXP

SENSOR STATE

EXPOSURE (0)

IDLE

GLOB

READOUT (0)

GLOB

READOUT (1)

(c)

GLOB

READOUT (2)

GLOB

READOUT (3)

IDLE

EXPOSURE (2)

EXPOSURE (3)

EXPOSURE (1)

REQ_EXP

SENSOR STATE

EXPOSURE (0)

IDLE

GLOB

READOUT (0)

GLOB

READOUT (1)

(d)

GLOB

READOUT (2)

GLOB

READOUT (3)

IDLE

CSG14K_CSG8K Datasheet(PDF) 46 Page - ams AG

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