Sony XC-EU50 - Manual (Page 11)

11
Mode Setting
Restart/Reset
To set Restart/Reset mode
The information on one screen can be extracted at any
time by externally inputting a restart/reset signal (HD/
VD). To enter this mode, set DIP switches 6, 7, and 8
on the rear panel of the camera as shown in the figure
below. The setting is especially effective for the
operation explained below.
The Restart/Reset function extends the CCD
accumulation time, resulting in a highly sensitive
image. This function is effective when you cannot gain
satisfactory sensitivity under normal operating
conditions, or when you want to observe a moving
object. Extend the VD interval (T) period between
external VD pulses.
Long exposure
Note
Some white spots may appear after a long exposure.
EXT HD
T T T
EXT VD
Odd and even fields are determined by the phase of the EXT HD/VD signal input from the outside.
Sample input timing chart 1
Continuous signal: 15.734 kHz (XC-EU50) Allowable frequency value ±1%,
15.625 kHz (XC-EU50CE) Allowable frequency value ±1%
VD interval (T): 262.5 H or more (XC-EU50) and less than 1 second (Recommended),
312.5 H or more (XC-EU50CE) and less than 1 second (Recommended)
Four or more VD pulses are required.
Exposure time for the Odd field
Exposure time for the Even field
Frame Accumulation (Factory setting)
Video output
Invalid image
Odd image Even image
Valid frame image