e2v ELIIXA+ 16K CXP COLOR, User Manual

Page: 27 / 55

U
SER
M
ANUAL
16
K
/8
K
CXP C
OLOR
– R
EV
G – 09/2016 P
A G E
| 27
When the User selects a synchronization mode which requires the control of the exposure, the
camera enters a specific mode:
The Line Period (measured) is
Tper , its minimum value is TPer
mini
(10µs on this camera) and the
exposure time set by the User is Prog_Tint.

Zone 1 : If Tper < Prog_Tint

Not relevant. Prog_Tint has to be smaller than Tper. The Camera can’t be use in that area


Zone 2 : If Tper < 4 x Max (TPer
mini
, Prog_Tint) + 10µs

The Sensor works in Full Exposure during the whole Line Period (LP) and the gain applied on the
output is variable (max x 4), set by User =
G
stb

The Output is multiplied by the following Gain = G
stb
x Prog_Tint / Tper

Zone 3 : If Tper >= 4 x Max (TPer
mini
, Prog_Tint) + 10µs

The risk is the sensor saturates then the calculation above is no more valid : after showing an
incorrect white balance, the image level will decrease down to 0 as the Line Period is increasing.

=> The Camera can’t be use in that area
Gain for the “Full Exposure Control Mode”
G
stb
: The User Can set this Gain with a value up to x4 (Gain Section). The value recommended is the one which
allows to cover the variation of the line period : 10% of variation requires a Gain at least of x1.2 (+/- 10%).
By default this value is set at x4.