STC-A33A
User Guide
32
Rev 1.0
Command No.
Command Descriptions
31H:
DGB[7…0]
[The digital gain] Initial data: DGB[7…0] = The value in the address 0EH, data range: 0 to 255.
This sets the digital gain.
The video output level is defined by the following formula:
Video output level = (Input video level
–CLAMP[7…0] x (1 + (DGB[7…0] / 128) + CLAMP [7…0])
Notes:
1. GOFS[7…0]: The gain offset, which is the value in the address 32H.
2. CLAMP[7…0]: The clamp level, which is the value in the address 38H.
32H:
GOFS[7…0]
[The gain offset] Initial data: GOFS[7…0] = The value in the address 0FH, data range: 0 to 63
This sets the gain offset.
38H:
CLAMP[7…0]
[The clamp level] Initial data: CLAMP[7…0] = The value in the address 0FH, data range: 0 to 63.
This sets the gain offset.
60H:
SW COM[7…0]
[Control selection (Rear panel / communication)] Initial data: SWCOM[7…0] = 0
This sets the following control selections.
D[7…0]
D7
D6
D5
D4
D3
D2
D1
D0
D7 to D2:
No function
Alwa
ys set “000000”
D1:
Control selection
0: DIP switch on the camera
1: Communication
D0:
Gain switch
0: Enable
(Gain mode is selectable by the switch on the rear panel)
1: Disable
(Fixed gain is adjustable by the communication)
61H:
DA_VREF[7…0]
[DAC reference voltage]
Initial data: DA_VREF[7…0] = the value of the address 0DH, data range: 0 to 255
This sets the reference voltage for the DAC.
62H:
FIX_GAIN[7…0]
[Fixed gain for the rear panel] Initial data: FIX_GAIN[7…0] = 16, data range: 0 to 255
This sets the gain for the fixed gain on the rear panel.
0:6.544 dB, 255: 40,204 dB
63H:
VR_MAX[15…8]
64H:
VR_MAX[7…0]
[Maximum setting of the pot on the rear panel]
Initial data: VR_MAX[15…0] = 422, data range: 0 to 65535
This sets the maximum gain for the pot on the rear panel for the manual gain.
70H:
GAIN[15…8]
71H:
GAIN[7…0]
[The current gain selection on the rear panel / the current pot position on the rear panel]
This obtains the status of the gain selection and manual gain on the rear panel.
D[15…0]
D15 D14 D13 D12 D11 D10 D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
D15:
Gain mode
0:Manual gain
1: Fixed gain
D14 to D0:
Manual gain