Dalsa Piranha 2 Series, Руководство пользователя

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34 Piranha 2 User’s Manual
03-032-00493-14 Teledyne DALSA
3.13 Setting Gains
Op tim izing gain in the an alog d om ain allow s you to achieve a better signal -to-n oise ratio
(d yn am ic range) than you w ou ld achieve by trying to op tim ize the gain in the d igital
d om ain.
To set the an alog gain m od e, u se the com m and :
Syntax: sg t f
Syntax Elem ents:
t
Tap selection. Allow able range is 1 to 4, or 0 for all tap s.
f
Gain setting. A gain valu e of 0 sets the cam era to its
nom inal gain (0d B). The sp ecified gain valu e range is
from –10 to 10d B.
Exam p le: sg 0 5.2
To set the d igital gain, follow ing a backgrou n d su btraction, u se the com m and :
Syntax:
ssg t i
Syntax Elem ents: t
Tap selection. Allow able range is 1 to 4, or 0 for all tap s.
i
Gain setting. The gain ranges are 0 to 511 (equ al to a gain
from 1 to 1.999). Use this com m and in conju nction w ith
the
ssb
com m and .
Related Com m and s:
ssb
Exam p le: ssg 1 15
Calibrating Gains
Instead of setting the analog gain to a sp ecific valu e, you can have the cam era d eterm ine
the gain valu e by p rovid ing the cam era w ith an average ou tp u t level to u se.
Note:
This fu nction requ ires a constant light inp u t w hile it execu tes. This featu re is
beneficial for achieving a com m on ou tp u t level for m u ltip le cam eras in a system .
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