relatively short length (<500-ft) of coaxial cable, typically RG-59/U.
NOTE:
A variety of coaxial cables are available with the RG-59 designation. Many of
these cables are intended for RF (radio frequency) applications such as the
distribution of RF carriers in a commercial home cable TV network. These RF
cables are not suitable for baseband video of the type generated by the CE-X, 36:1
camera. The GOOD QUALITY RG-59 cables for this camera must be selected with
good performance in video transmission. Please consult ROS if additional
assistance in selecting optimum cables is desired.
For cases where the camera is going to be operated over extended lengths of coaxial or
twisted pair cabling, long-line amplifier driver circuits are included within the camera. This
circuitry can compensate for video loss.
NOTE
: The Long Line Amplifier may be disabled by adjusting Mode Selection DIP
switches. Refer to Section 2.9, Camera Mode Selection. This option requires
temporarily removing the camera electronics from the housing to access the control.
3.9.1 Adjust LLA in Bipolar/Unipolar/Differential mode
Adjusting the LLA is a simple 3-step procedure:
Step 1:
Enter the LLA adjust mode.
This is performed by simultaneously actuating Zoom Tele and Focus Near. Entering
this mode, will display the current LLA setting on the television monitor screen in the
following format:
LLA XX:100
Where XX is a number from 00 to 99, representing the current LLA setting as a
percentage of its maximum value. At the minimum (for short cables) numbers
corresponds to 00:100 and at the maximum (for long cables) numbers corresponds
to 100:100.
100:100 will not be displayed it will actually display: LLA MAX
Having the LLA setting displayed on the television display as described above
verifies that the camera is in the LLA setting mode.
Step 2
: Adjust the LLA by increasing or decreasing the LLA setting.
Once the camera is in LLA setting mode, actuating Focus and/or Exposure has no
effect on the camera. And actuating the Zoom control has no effect on the
Zoom
, it
will instead increase or decrease the LLA setting. The overlay will display the new
setting in real-time.
When the zoom control is actuated in Tele or Wide position, the LLA setting will
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