HBZMXSIB/10/16SD-PR-1
Page 43
Playback
To enter PLAY mode, press the PLAY mode key
.
When playback is first started, the unit will automatically select a multi-screen display
on Monitor-A, which can show all the cameras which were recorded on that tape.
PLAY mode will always stop any LIVE mode multi-screen displays on Monitor-A.
Note
On the simplex multiplexers, PLAY mode will also cause RECORD mode to stop.
Your video multiplexer can display video played back from a VCR whether it was
originally recorded from a valid multiplexer, or whether it was recorded off a normal
video input, i.e. not multiplexed. Tapes that were not recorded on a multiplexer will
automatically be played back without attempting to separate the fields.
The multiplexer can also correctly interpret tapes encoded on Dedicated Micros
multiplexers, by changing a user-selectable option in the menu system. This is useful
in installations which already have other multiplexers in use (see Decoding Tape
Formats From Different Multiplexers, page 44.
On playback, you can select one of several multi-screens on Monitor-A to display the
recorded images which are being played back from the VCR. During playback, all on-
screen text on Monitor-A will show the status, time and date at the time of recording.
Monitor-B will always display live analogue signals. No playback images are shown
on Monitor-B. During playback, the text LIVE is displayed on Monitor-B so that you
can clearly see that the signal on Monitor-B is live, while that on Monitor-A is a
playback signal.
How Playback Works
When playing back multiplexed recordings which were originally recorded from a
multiplexer, time-stamped video fields are received from a VCR connected to the
VCR IN connector or YC input on the multiplexer’s rear panel, each field being
uniquely identified by its own digital data packet. These embedded digital data
packets are decoded, and the video field is linked to its original input camera. You
can select which cameras to display during playback, and so the video field for that
camera is displayed (or skipped) according to your playback selection. All the
associated status information, including titles, time and date of recording, as well as
the alarm or video loss status of the camera is reconstructed from the digital data
packet and displayed as on-screen text during playback. Because the on-screen text
is re-constructed and generated for on-screen display (as opposed to being recorded
on the VCR as part of the video display) you are assured of very clear and legible
status and titles during playback.
Summary of Contents for ZMX/BD/10
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