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Q. When a teller selects a particular lane, the teller monitor either doesn't lock in on that lane camera or
it will lock in initially but then start cycling between lanes again. The problem may be intermittent
and not all lanes may be affected. What causes this?
A. The termination switches, labeled TERM, are probably not set properly for each lane camera and the
driveway camera on the video matrix. These switches terminate the cable at 75 ohms which is
required for the end of the run for any CCTV signal. If the cable from the camera "terminates" at the
video matrix, the switch should be ON. If there is a t-tap at the video matrix to send the camera
signal on to some other device, such as a DVR, the switch should be OFF because the end of the run
is now the DVR and the termination should happen there. Keep in mind that the video signal will
still be reduced any time a t-tap is used. If the DVR has true looping outputs, meaning the signal is
regenerated, it may be best to run the cables from the lane cameras to the DVR first and then
terminate them at the video matrix. When troubleshooting this type of problem on a system that has
t-taps, and the termination switches are set properly, try removing the t-taps temporarily and
terminate the cables at the matrix. If the system works properly at this point, the problem may be
weak outputs from the cameras or signal loss from long cable runs. It is also possible that the DVR
was not terminating the cable properly. A final word about t-taps – if the t-tap does not happen
directly at the matrix it will be necessary to use distribution amps since there is no single end-of-line.
Also make sure that the coax cable is intended for CCTV and that 75 ohm BNC connectors are being
used. Belden 1426A is a very good cable to use for this application and should work for cable runs
up to about 800 feet.
Q. I just installed one or more 5517 Remote Video Units and the monitors won't work. What could be
wrong?
A. The power supply for each 5517 connects to a relay module near the top of the video unit. The
camera power is pre-wired to the unswitched output and the monitor power is pre-wired to the
switched output of the relay module. An E0885 Video Power Control Kit is normally used to control
the relays from inside the facility so the monitors can be turned off after hours. If this kit is not being
used, or not yet installed, simply move the monitor power wires to the unswitched output of the relay
board. See the section "E0885 Video Power Control Kit Installation" for more information.
Q. I just installed 5517 Remote Video Units and the monitors always show the camera from that unit.
What could be wrong?
A. The most likely cause is the service switch inside the unit being in the service position. In this mode
the video cables leaving the unit are disconnected and the camera is internally connected directly to
the monitor.
Q. The monitors in 5550 Teller Video Units or 5517 Remote Video Units were working but now I
cannot get a picture. What could be wrong?
A. If a blue box appears on the screen with a message that says "AV No Signal", the monitor is
working but it is not receiving a video signal. If the message says "SV No Signal" or "VGA No
Signal" the video input source has been changed. The left red button on the menu board, which is
mounted in the top left of the unit, changes the source. Press this button to cycle through the choices
to get the input set for AV. Note that other monitors have been used in 5550 / 5517 units and will
not experience this symptom. Only monitors that have the menu board at the top left of the unit have
the capability of multiple input sources.
Q. Condensation appears sometimes on the inside of the glass of 5517 Remote Video Units. What can
prevent this?
A. Remove the front cover from the video unit. If there is foam insulation on all four sides of the LCD,
remove the insulation from the top and bottom. Leave the insulation on the sides.
08-315 (3/6/12)
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