User manual

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Bosch Security Systems | March 17, 2009
LTC 8900 | User Manual | Keyboard Operation
5.6 Sequence Control
5.6.1 Load/Clear a Sequence
To load a previously programmed sequence to run on
your monitor, press Load Sequence [Seq], enter the
desired sequence number (1 to 256), then press ENTER.
Note that loading a sequence does not automatically start
the sequence.
Since sequences may be programmed to use more than
one monitor, all required monitors must be available. If a
sequence is already on a monitor, the originating operator
(or an operator with a higher priority) can load a new
sequence on the monitor(s). Others will receive an error
message.
To clear a monitor sequence, press Load sequence
[Seq], then press ENTER. Only the originating operator
(or an operator with a higher priority) can clear a monitor
sequence. Others will receive an error message.
If enabled, the status display area of the monitor indicates
the sequence number in the appropriate location. If no
sequence is currently loaded, 00 is displayed.
5.6.2 Run a Sequence
To run a sequence currently loaded on a monitor, press
Start Sequence [Run]. If the sequence was stopped, the
command starts sequencing. Direction of the sequencing
is indicated in the monitor status display (if enabled), by a
directional arrow and the letter R to the right of the
sequence number. If Start Sequence [Run] is pressed
while a sequence is already running, the switcher goes
immediately to the next step in the sequence. Holding
down Start Sequence [Run] produces a quick-scan effect.
If Start Sequence [Run] is depressed when no sequence
is loaded, an error results. If the monitor is in alarm,
Start Sequence [Run] controls switching of alarm video
rather than a loaded sequence.
5.6.3 Stop a Running Sequence
To stop a sequence that is currently running, press Hold
Sequence [Hold]. The monitor status display now shows
S to the right of the sequence number. If the sequence is
already stopped, pressing Hold Sequence [Hold] has no
effect. If no sequence is currently loaded, pressing Hold
Sequence [Hold] results in an error condition. If the
monitor is in alarm, Hold Sequence [Hold] stops the
alarm switcher rather than a loaded sequence.
5.6.4 Controlling Sequence Direction
The direction of a sequence can be set to either forward
or reverse. It is also possible to manually step forward or
reverse through a stopped sequence. These actions work
as follows:
If Next Sequence Step [Next] is pressed with the
sequence in the stop state, the sequence switches forward
and remains stopped. If the sequence is running when
Next Sequence Step [Next] is pressed, it immediately
goes to the next step and continues to run. The same is
true for the Previous Sequence Step [Prev] button, but
in the reverse direction. If either Next Sequence Step
[Next] or Previous Sequence Step [Prev] is held down,
quick-scan switching will take place (at a rate of
approximately two steps per second). When sequences
are first loaded, direction defaults to forward.
If Previous Sequence Step [Prev] is pressed while a
camera sequence is running, it reverses the sequence. If
Previous Sequence Step [Prev] is pushed while in a
hold mode, and the display is showing the forward
prompt, the first push changes the direction only; a
second push switches to the previous step. The same is
true for Next Sequence Step [Next], in the opposite
direction. The monitor status display shows an arrow
pointing either up/down to indicate the sequence
direction. The arrow will be to the right of the sequence
number, either above or below the sequence run R or
stopped S indicator. If the monitor is in alarm, Previous
Sequence Step [Prev] and Next Sequence Step [Next]
control the alarm switcher rather than the loaded
sequence.
If no sequence is loaded, pressing Next Sequence Step
[Next] or
Previous Sequence Step [Prev] automatically
steps the switcher through the camera numbers in
numerical order.