Exposure Modes In Detail - Teledyne Piranha4 User Manual

Piranha4 8K Color Camera User's Manual
Description
Internal line rate and exposure tim e
External line rate and exposure tim e
EXSYN C pulse controlling the line
rate. Program m ed exposure tim e.
The p aram eters u sed to select the im aging m od es—trigger sou rces (sync), exp osu re tim e, and line rate—
are grou p ed together as the Cam era Controls.
Parameter
Line Rate (in H z)
Exp osu re Mod e
Exp osu re Tim e

Exposure Modes in Detail

1. Internally Programmable Line rate and Internally Programmable Exposure Time (Default)
Line rate is the d om inant factor w hen ad ju sting the line rate or exp osu re tim e. When setting the line rate,
exp osu re tim e w ill d ecrease, if necessary, to accom m od ate the new line rate. When ad ju sting the
exp osu re tim e the range is lim ited by the line rate.
:
Note
The cam era w ill not set line p eriod s shorter than the read ou t p eriod .
GenICam parameters to set:
I / O Controls > Trigger Mode > Off
2. External Line Rate and External Exposure Time (Trigger Width)
In this m od e, EXSYN C sets both the line p eriod and the exp osu re tim e. The rising ed ge of EXSYN C m arks
the beginning of the exp osu re and the falling ed ge initiates read ou t. N ote:
maximum line rate =
*Exposure time must be greater than 6 µs and low time greater than 1,500 ns
Teledyne DALSA
Line Rate
Internal, program m able
Controlled by EXSYN C
pulse
Controlled by EXSYN C
pulse
Figure 20. Exposure controls
Camera Controls
Cam era line rate in H z. Only available w hen the start line trigger p aram eter
is d isabled (Trigger Mod e off).
Set the op eration m od e for the cam era's exp osu re.
Trigger Wid th or Tim ed . Trigger Wid th is only available w hen Trigger
Mod e is enabled .
Trigger Width
Uses the w id th of the cu rrent line trigger signal p u lse to control the
exp osu re d u ration.
Timed
The exp osu re d u ration tim e is set u sing the Exp osu re Tim e featu re and the
exp osu re starts w ith the Line Start event.
Sets the exp osu re tim e (in m icrosecond s). Exp osu re Mod e featu re m u st be
set to Tim ed
1
(exposure time + low time*)
Exposure Time
Internal program m able
External (EXSYN C)
Internal program m able
Description
41
Trigger Source
(Sync)
Internal
External
External
03-032-20156-02