Videoswitch VCM - Manual (Page 14)

Duplex Multiplexers
User Manual Page 14
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Videoswitch
VCM614d.doc
5. Trouble-Shooting
If you are experiencing problems with the multiplexer, the following may help locate the cause:
5.1 Things to check
Check that the cables are correctly connected.
Check that power is applied to the multiplexer (at least one red LED will be illuminated at all times
on the front panel), to the cameras, monitors and VCR.
5.2 No Images in Record mode
Check that some text is visible on the screen. If not, is the monitor correctly connected and turned
on? With the multiplexer and the VCR both in RECORD mode, press the “VCR VIEW” key.
Check that rapidly changing images are displayed on monitor “A”. If not, check record and play
cables.
5.3 Missing Images in Record mode
Check that all cameras are correctly wired and are powered up.
5.4 Missing Cameras in Auto Sequence
Program the auto sequence set-up as detailed in sections 2.4 and 4.3.
5.5 Washed Out Images
Check that, if camera inputs are not looped through, the termination switches are ON.
5.6 Dark Images
Check that, if camera inputs are looped through, the associated termination switches are OFF on
either the multiplexer or the equipment that the cameras loop through to..
5.7 Flashing Images
You may be in “VCR VIEW” mode, in which case press the “VCR VIEW” key to turn OFF the
VCR VIEW light. Alternatively, check that the cables are correctly connected.
5.8 No Images in Play mode
Check that both the multiplexer and VCR are in PLAY mode.
5.9 Missing Images in Play mode
Check that, if a step cable is not being used, the correct recording mode has been set. Fit a step
cable if in doubt. If a step cable is fitted, check that the multiplexer is correctly detecting the VCR
mode (see top right of screen).