Operating instructions

sentuser Command Reference
The following section describes the commands available within the sentuser (or
sentuser2) application.
reset
This sends a reset pulse to the Video Sentinel Box. The response should be "Reset sent",
followed by the command prompt.
init
This initializes and loads control codes into the video circuitry. After several seconds,
the response should be "Video initialized", followed by the command prompt.
capture image.dat
This captures a single gray-scale image to the file "image.dat"
mask mask.dat
This sends the mask file "mask.dat" to the Video Sentinel box. After about one second,
the response is the command prompt.
threshold 37
This modifies the image mask in the Video Sentinel box in the following way: All pixels
that are set to 255 are unchanged but all other pixels are set to the specified value (in this
case 37). This allows us to adjust the threshold in the image mask without forcing us to
create a new image mask. This command would normally be issued after the mask
command but before the trigger command. After about one second, the response is the
command prompt.
timeon 18:30:00
This sets the daily turn-on time of the Video Sentinel box, in this case to 6:30 PM.
Normally, we want to turn on in the evening and turn off in the morning. The default
turn-on time is 6:00 PM. You may want to change the turn-on time as the seasons change
and when changing to or from Daylight Savings Time. The response is "Time On:
18:30:00" followed by the command prompt.
timeoff 05:30:00
This sets the daily turn-off time of the Video Sentinel box, in this case to 5:30 AM.
Normally, we want to turn on in the evening and turn off in the morning. The default
turn-off time is 6:00 AM. You may want to change the turn-off time as the seasons