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activate operational features and functions. A summary list of the
various AutoDome commands is included in the Appendix
section of this manual for your reference. Refer to the AutoDome
user manual for complete information.
15.4.5 Clearing a Pre-Position
A stored pre-position may be cleared using the following steps:
1.
Press the SET key and verify the indicator lights.
2.
Press 9 followed by the pre-position number.
3.
Press ENTER.
EXAMPLE: SET 905 ENTER
The above example will clear pre-position number 5 from the
receiver/driver of the camera currently being viewed. Note that
this capability can only be used with newer LTC 8560 Series
receiver/drivers that are compatible with this feature. If the
AutoDome series of dome cameras is being used, certain pre-
position commands are also used to activate operational features
and functions. A summary list of the various AutoDome
commands is included in the Appendix section of this manual
for your reference. Refer to the AutoDome user manual for
complete information.
15.4.6 Set Auxiliary Functions On
Users can activate certain auxiliary functions provided by the
receiver/driver of a so-equipped camera by performing the
following steps:
1.
Press ON and verify the ON indicator lights.
2.
Key in the auxiliary function number using the numeric
keypad.
3.
Press ENTER.
EXAMPLE: ON 3 ENTER
The above example will activate receiver/driver auxiliary number 3
on the camera currently being viewed. Note that the first 4
auxiliaries correspond to relay outputs in the LTC 8560 Series of
receiver/drivers (Aux 1 in the LTC 8560 Series are solid state relays
strapped to the same voltage as the pan/tilt output). These can be
configured by option switches in the receiver/driver as either
'latching' or 'momentary' type functions. If configured for the
'latching' type, the auxiliary will stay on once activated until turned
off. If configured as 'momentary', the auxiliary remains on only as
long as the ENTER key is held down. The auxiliary outputs 2
through 4 can also be configured as a contact closure, 24 volts AC,
or as line voltage. Auxiliary number 5 controls the DITHER
function, which is explained in more detail later in this section.
Auxiliary number 6 corresponds to an internal receiver/driver
AUTO-PANNING feature which must be previously enabled by
an option switch inside the receiver/driver. If the AutoDome series
of dome cameras is being used, certain auxiliary commands are also
used to activate operational features and functions. A summary list
of the various AutoDome commands is included in the Appendix
section of this manual for your reference. Refer to the AutoDome
user manual for complete information.
15.4.7 Set Auxiliary Functions Off
To deactivate an auxiliary currently latched 'on', perform the
following steps:
1.
Press OFF and verify the OFF indicator lights.
2.
Key in the auxiliary function number to be turned 'off' using
the numeric keypad.
3.
Press ENTER.
EXAMPLE: OFF 2 ENTER
The above example will deactivate auxiliary number 2 in the
receiver/driver of the camera currently being viewed. If the
AutoDome series of dome cameras is being used, certain auxiliary
commands are also used to activate operational features and
functions. A summary list of the various AutoDome commands is
included in the Appendix section of this manual for your
reference. Refer to the AutoDome user manual for complete
information.
15.4.8 Dither Control
The DITHER function is a LTC 8560 Series receiver/driver
operation intended for applications where very low-light level
cameras are used. Its function is to prevent bright lights in the
scene from burning a spot on the camera imager. If the pan/tilt is
not moved for a period of about 2 minutes, the receiver/driver
will automatically pan right for approximately 0.5 seconds. Two
minutes later, a pan left will occur and the cycle will continue
until disabled. The feature is selected by an option switch in the
receiver/driver and is controlled by the auxiliary 5 function. To
control the DITHER function, perform the following steps:
1.
Press ON or OFF and verify the indicator lights.
2.
Key in number 5 using the numeric keypad.
3.
Press ENTER.
EXAMPLE: ON 5 ENTER
The above example will turn on the DITHER function on the
camera currently being viewed. Note that the option switch in the
receiver/driver must be enabled for this feature to work. On
newer versions of the receiver/driver, the pan/tilt unit will make
one short Left/Right cycle to indicate that the dither function has
been activated. Note that a camera in the DITHER mode will
accumulate a viewing error if left unattended for a long period of
time, so occasionally a manual adjustment of the pan/tilt may be
required.
15.5 Alarm Control Commands
15.5.1 General
Alarm commands are used to control the system's automatic
video switching capabilities in response to alarm signals from the
Alarm Interface Unit. The camera activated by an alarm is
normally the same as the alarm number, but this relationship can
be changed using the optional Master Control Software for
Windows or the optional Graphical User Interface software
package. The optional LTC 8059/00 Master Control Software
for Windows and the LTC 8850/00 Graphical User Interface
software packages even permit up to 4 cameras to be alarmed by a
single alarm input.
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