Output Level Adjustment; Checking The Video Level - Sony DXC-325P Service Manual

Output Level
Adjustment
If a clear picture cannot be obtained because of insufficient
lighting, set the GAIN selector to the appropriate position.
Normally set the GAIN selector to "O".
The video output level can be raised by 9 dB by setting the
GAIN selector to "9" and by 18 dB by setting the selector to
"41g"
1-24
Checking the Video
Level
When the ZEBRA switch is set to ON, a zebra pattern will
appear on the part of the viewfinder screen when the video
output level of the picture is 70 to 80 IRE (for NTSC) or 490 to
560 mV (for PAL). You can use this zebra pattern as a
reference when adjusting the iris manually. Adjust the iris so
that the zebra pattern appears over the subject being shot
(for example, the face of a back-lit person).
If it is not necessary to use the zebra pattern to adjust the
iris, set the ZEBRA switch to OFF.
DXC - 325 (UC)
DXC - 325P (EK)