Point Grey Flea3 USB 3.0 Technical Reference 7 Imaging Parameters and Control
7.3.1 GAIN: 820h
The value field in this register can be set in three ways:
Method Description
Absolute
The user sets the value is set via the absolute register. The Value field becomes read only and reflects
the converted absolute value.
Manual
The user sets the value in the Value field. The absolute register becomes read only and contains the
current value.
Automatic
The value is set automatically by another register and both the Value field and the absolute register
become read only.
Formulas for converting the fixed point (relative) values to floating point (absolute) values are not
provided. Users wishing to work with real-world values should refer to Absolute Value CSRs (page
148).
Field Bit Description
Presence_Inq [0]
Presence of this feature
0: Not Available, 1: Available
Abs_Control [1]
Absolute value control
0: Control in the Value field, 1: Control in the Absolute value CSR.
If this bit = 1, the value in the Value field is read-only.
[2-4] Reserved
One_Push [5]
One push auto mode (controlled automatically only once)
Read: 0: Not in operation, 1: In operation
Write: 1: Begin to work (self-cleared after operation)
If A_M_Mode = 1, this bit is ignored
ON_OFF [6]
Read: read a status
Write: ON or OFF for this feature
0: OFF, 1: ON
If this bit = 0, other fields will be read only
A_M_Mode [7]
Read: read a current mode
Write: set the mode
0: Manual, 1: Automatic
[8-19] Reserved
Value [20-31]
Value.
A write to this value in ‘Auto’ mode will be ignored.
Format:
Revised 9/27/2012
Copyright ©2011-2012 Point Grey Research Inc.
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