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4.6 Alarm Inputs and Output
(Accessory Output)
4.6.1 TC8277 Series and TC8278 Series
The 609 mm (24 in) cable, with 15 pin connectors provided
with the VidQuad
®
units, are for use with the mating alarm
input, output and accessory connectors. These cables can
be cut to desired length, and the end insulation stripped off
for connecting external devices.
4.7 Alarm Inputs
4.7.1 TC8277 Series and TC8278 Series
The alarm inputs are defaulted to be normally open. These
can be individually changed to normally closed via the Alarm
menu.
CAUTION: Do not apply external voltages to
the alarm inputs.
Belden 8760 twisted shielded cable (or
equivalent) should be used for wiring to the
alarm connector and the total length of
unshielded cable should not exceed 10 cm
(3.9 in) on each connector port to maintain
compliance with Directive 89/336/EEC.
Use only isolated closures or open collector logic.
Precautions should be taken, particularly on long runs, to
prevent pickup of spurious signals from associated wiring
which may give false inputs or damage the unit. Refer to
the Alarm/Accessory Connector - Pin-Out under
ILLUSTRATIONS.
4.8 Alarm Output
4.8.1 TC8277 Series and TC8278 Series
The alarm output is a relay which is configured to be
normally open. The relay contacts can handle up to 1
ampere at 40 volts AC/DC and will close upon alarm input
to the unit. The video loss output is a logic low. Refer to
the Alarm/Accessory Connector - Pin-Out under
ILLUSTRATIONS.
5 OPERATION
5.1 Menu Operation
In setup mode, the user has access to on-screen menus for
programming system settings and installation data such as:
Titles
Alarm Operation
Sequencing Operation
Time/Date Setup
Password Setup
Remote Configurations
For an overview of operator programmable menu options,
refer to Menus Flow Chart under ILLUSTRATIONS.
Menu operation is password protected to prevent
unauthorized access, and can be set by the user.
Although the menus include "EXIT" selections, the MENU
button can be pressed at any time while in the menus to
immediately exit the setup mode and return to normal
operation. Any programming made up to the "menu" exit
time will be saved.
5.1.1 Initiating Menu Programming
To start a menu programming session, press the MENU
button.
The operator will be prompted to enter a password,
consisting of a three button sequence of the front panel
buttons. The password can be programmed by the
operator.
The factory setting for the password is SELECT, SELECT,
SELECT.
Note that the SELECT button is not normally a valid
password button and cannot be used in a new password
when it is set by the operator. The only time that this
button is used in the password is as a factory default on
new units. Buttons which are used in normal MENU
operation - the MENU, SELECT and ARROW buttons - are
not valid as password buttons. All others are valid.
Once the correct password has been entered, a main menu
will be displayed, showing each of the major sections that
can be programmed by the operator. In general, the on-
screen prompts will be all that are needed to guide the
operator through the steps to select and program the
options.
Each screen prompts the operator on the correct buttons
to use for various options and functions.
5.1.2 Selecting Menu Items
Move up and down through the menu by using the up and
down arrow buttons, and choose a menu item by pressing
the SELECT button. This will bring up a new screen which
allows the operator to select options or enter data related
to the menu item which was chosen.
Option Selection
In menu screens where items in a list must be turned ON
or OFF, use the left or right arrow buttons to toggle the
status of the current entry, then press the down arrow
button to move on to the next entry. The up or down
arrow buttons are used to skip over or select entries on
the screen. When there are more entries than can be
displayed on one screen, the screen will scroll automatically
when the down arrow is pressed on the bottom entry. The
up arrow can be used to scroll up to preceding entries if
needed. Press SELECT when done to exit the screen.
5.1.3 Data Entry
Some menu screens provide a means for the operator to
enter numeric or alpha-numeric data. In these menus, a
current cursor indication is provided by means of the "Up-
Arrow" character below the position at which data is to be
entered. The up and down arrow buttons will then cycle
through the displayable character set, while the left and
right arrow buttons are used to move to subsequent or
preceding character locations. Once all characters have
been set up correctly, the SELECT button will confirm the
data entry and call up the subsequent camera, if applicable. If
there is no subsequent camera, then SELECT will return the
operator to the main menu.
5.1.4 Terminating Menu Programming
Menu programming can be terminated at any point by
pressing the MENU button again.
All changes are automatically saved by the system as they
are made. Settings are retained even on loss of power.