DVC DVC-1412 - Camera Controls; Gain; Offset (or Black Level); Table 9.4-1: Gain Table

9.4 CAMERA CONTROLS
The camera has the following parameters that can be controlled or queried via the serial port:
9.4.1 Gain
The camera gain is controlled by means of an analog voltage (0-to-3VDC). This parameter is
supplied by the host PC as a two digit hex data argument to the command GAI and converted
to an analog voltage using an 8-bit Digital-to-Analog converter (DAC). A gain command with
the syntax "GAI 9A" would set the gain to the maximum value.
1) The power on Gain value is 29 "Hex", corresponding to the 0dB point.
2) Software designers may wish to design a “Gain Slider bar” based on the following
table:
Hex Gain (dB)
00 -8.2
29 0.0 (power-on default)
9A +22.6
Table 9.4-1: Gain Table
9.4.2 Offset (or black level)
The camera offset is controlled by means of an analog voltage (0-to-3VDC). This parameter is
supplied by the host PC as a two digit hex data argument to the command OFS and converted
to an analog voltage using an 8-bit Digital-to-Analog converter (DAC). An offset command
with the syntax "OFS 9A" would set the offset to the maximum value.
1) The power on offset value is 18 “Hex” corresponding to the 0% point.
2) Software designers may wish to design an “Offset Slider bar” based on the following
tables:
Hex Offset (%)
00
-7.5%
18 (power-on default) 0% (rev 6.0 or higher; includes all 1412)
9A 40%
Hex Offset (%)
00
-15%
18 (power-on default) 0% (prior to rev 6.0)
9A 32%
Table 9.4-2: Offset Table
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