Auto Iris Adjustment - Sony DXC-325P Service Manual

3-7-3. Auto Iris Adjustment
Object: Grayscale chart
Equipment: Waveform monitor
To be extended: AT-53 board
Preparation: Set the BARS WB switch on the
side of the camera to 3200°K.
Set the iris control to AUTO.
Rotate @RV2 (IRIS MODE)/AT-53
board fully clockwise ().
Adjustment:
l. Adjust the zoom control so that the gray-
scale chart frame touches the underscanned
picture frame on the monitor.
UUTTATTIT
at Jc
Monitor Screen
2. Adjust QRV3 (IRIS SET)/AT-53 board so that
the white peak level "A" is 700+15mv.
3. Adjust @RV2 (IRIS MODE)/AT-53 board so that
the white peak level "A" is 760+15mv.
4. Adjust @RV3 (IRIS SET)/AT-53 board so that
the white peak level "A" is 700+15mv.
DXC-325P (EK) 3-25
AT-53 Board
UTUVIUVE
3. ALIGN