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another group. Each output is rated to handle up to 8
receiver/drivers as in a daisy chain configuration to a maximum of
1.5 km (5000 ft). Select and maintain a wire color convention to
avoid confusion at the various camera sites.
Example: White to "+", Black to "-", and Shield to "S"
The CODE OUT LED located on the Allegiant front panel will
flash when either the joystick, a lens control, or a video switching
action is activated in the system. The CODE OUT LED will also
flash occasionally when status information is being generated by
the system.
6.8
External Alarm Connections
The LTC 8100, LTC 8200, and LTC 8300 Series contains
integral alarm input and output connections. These alarm inputs
provide the units with the ability to automatically display video
under alarm conditions. The units accept up to 32 (LTC 8300)
16 (LTC 8200), 8 (LTC 8100) contact closures or logic level
inputs from remote sensing devices such as door contacts, PIRs,
etc. The alarm inputs are designed to generate alarm conditions
upon closure of the external contacts (normally open contacts).
The units also provide 6 (LTC 8300) 5 (LTC 8200), 2 (LTC
8100) relay closure outputs upon alarm conditions.
Alarm input connections are made to 12 contact removable screw
terminal blocks located on the rear panel. Each terminal block
provides eight individual alarm input connections.
Connect any 2 conductor shielded wire (the shield and ground
wire are both connected to the connector pins labelled "G")
between the alarming device (contact closure or logic level) and
the appropriate Allegiant input. The alarm input numbers are
marked on the removable connector block. Note that every two
alarm inputs share a common ground connection. The total wire
'loop resistance' should not exceed 1,000 ohms. Input #1
corresponds to camera #1 in the factory default settings, but this
relationship can be changed via programming with the optional
LTC 8059/00 Master Control Software for Windows package or
LTC 8850/00 Graphical User Interface software package.
The Allegiant units also provide isolated alarm relay outputs. An
alarm output is typically used to activate the alarm input of a
security type VCR or other alerting device. A VCR is normally
programmed to change recording speeds from a slower time
lapse mode to a faster real time mode upon alarm activation.
Operation of the relay outputs depends upon how the system has
been configured to respond to alarm events. The alarm output
relays activate accordingly under the following conditions:
1. Relay 1 will activate if the system is set to use the Basic alarm
response mode and an alarm occurs on any system monitor.
Relay 1 will deactivate after all alarms have been removed
from the inputs. Relay 1 will also deactivate if the system is
disarmed (either the monitor being disarmed or the alarm(s)
being disarmed) by an operator from the keyboard. Pressing
the Acknowledge key on the system keyboard will not
deactivate Relay 1 since the alarm video follows the contact
applied to the unit in this alarm response mode. Other relays
are not used in this mode.
2. Relay 1 will activate if the base system is set to use the
Sequence & Display alarm response mode and an alarm
occurs on any system monitor. Relay 1 will deactivate after all
alarm videos have been acknowledged (pressing the keyboard
Acknowledge key) by the system operator(s) from all system
monitors. Relay 1 will also deactivate if the system is disarmed
(either the monitor being disarmed or the alarm(s) being
disarmed) by an operator from the keyboard. Removal of the
alarm input will not deactivate Relay 1 since the alarm
video(s) are not dependent upon the duration of the contact
applied to the unit in this alarm response mode. Other relays
are not used in this mode.
3. If the base system is set to use the Autobuild alarm response
mode and an alarm occurs on system monitors, the relay
corresponding to the monitor number will activate for the
duration that the corresponding alarm input is applied to the
unit. The relay will deactivate if the monitor associated with
the relay or if the alarm(s) being displayed on the monitor is
disarmed by an operator from the keyboard. Pressing the
Acknowledge key on the system keyboard will not deactivate
the relays since the alarm video follows the contact applied to
the unit in this alarm response mode.
4. If the VersAlarm Group Table screen in the PC based LTC
8059/00 Master Control Software for Windows package or
the LTC 8850/00 Graphical User Interface software package
contains an alarm group where Monitors are included and the
'Monitor' option has been selected in the 'Relay Action'
column, the relay corresponding to the monitor number will
activate for the duration that the alarm video remains on the
monitor. The relay will deactivate if the monitor associated
with the relay or if the alarm(s) being displayed on the
monitor is disarmed by an operator from the keyboard.
Pressing the Acknowledge key on the system keyboard will
not deactivate the relay unless this feature has been selected for
the associated alarm group. If the 'Monitor' option has been
set to '1' in the Group Table, only Relay 1 will activate when
monitors in that alarm group become alarmed.
Typically any 2 conductor wire can be used between the rear
panel terminal block containing the relay outputs and the VCR
alarm input. If some other external device is to be controlled, do
not exceed the relay ratings of 1 A, 40 V AC/DC.
6.9
Satellite Configuration Installations
Due to the many variations possible, only general guidelines can
be covered for installing satellite systems. Refer to the appendix
section of this manual and either the LTC 8059/00 Master
Control Software for Windows or LTC 8850/00 Graphical User
Interface software package manual for additional configuration
and programming information on satellite systems.
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