Nortek DQ94 User manual

MAN-0803-1298-1 Product Manual: DQ94 1
8 7 6 5 4 3 2 1
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BRN AL3
BRN-W AL4
GRN RET
BLU-W AL2
BLU AL1
GRN-W RLY COM
ORG RLY N/C
ORG-W RLY N/O
1.
1.1.
1. Introduction
IntroductionIntroduction
Introduction
The Nortek DQ94 real-time colour quad is presented as a desktop unit with loop-through connections to offer
not only a stand-alone quad function to display four cameras simultaneously on a CCTV monitor but also to
provide an auxiliary display in conjunction with multiplexers or PC based CCTV systems.
The DQ94 will accept up to four non-synchronous video inputs and offers a choice of live displays to suit
most applications for 4 , 3, or even 2 cameras. The on-screen menu is easy to follow and provides variable
alarm alert and auxiliary sequence periods, audible alert on/off, flashing borders ( in alarm state ) and
numeric camera identifier on/off.
The auxiliary (spot monitor) output may be used for either quad or full-screen sequencing display and can be
programmed to react in a number of different ways to an alarm alert. Alarm contacts are either all normally
open or normally closed with an alert period of 4 to 120 seconds with an audible alarm alert sounder on/off
option.
2.
2.2.
2. Installation
InstallationInstallation
Installation
Video and Alarm Connections
Connect your alarm contacts (floating, voltage free) to AL1-AL4 and connect their commoned returns to
RET. See section Specifications for alarm relay contact details.
A supplementary earth (screw) connection is provided, located below the alarm connector.
Video Terminators
If you are looping your camera signals through the DQ94 then you need to remove the associated 75Ω
terminations; this is done by opening the DQ94 case and adjusting the termination jumpers.
3.
3.3.
3. Configuring the DQ94
Configuring the DQ94Configuring the DQ94
Configuring the DQ94
Entry into Set-up Mode
Hold down and together for 4 seconds, you’ll then hear a double beep which confirms that the
unit is now in set-up mode and you will see something like this …
Nortek Electronic Circuits Ltd., Bridge Mill, Royle Street, Congleton, Cheshire, CW12 1HR, UK. T: [phone] www.nortek.co.uk [email protected]
Nortek
Product Manual
DQ94

 

ALERT PERIOD
4 SECS
menu item
current selection
Jumpers
Unterminated (Hi-Z)
Terminated (75-Ohm)
4321
Nortek
Product Manual – DQ94
Main Output
Auxiliary Output
Camera 1 Camera 2 Camera 3 Camera 4
21 3 4
Power
Alarms

MAN-0803-1298-1 Product Manual: DQ94 2
Menu Items
You step through the various menu items by using the and keys, if you step past the last item
then you’ll simply wrap around to the first (a short beep occurs when this happens).
You change a menu item’s setting by using the SELECT key.
If no key is touched during a 2 minute period the unit will time-out and revert back to its normal operating
mode, any configuration changes are discarded.
The default settings can be loaded by holding down the SELECT key for 4 seconds, after which the factory
set defaults will be restored.
Exiting Set-up Mode
Tap either STORE or CANCEL, the latter will discard any changes and revert back to the original settings.
Setting the Default Layout
Before executing the above set-up procedure - first select your preferred split-screen layout (see section
Operation), completion of the set-up procedure results in this layout being stored as the new default.
Subsequently this layout will automatically be selected at power-up.
Description of Each Menu Item
Alert Period
4, 8, 10, 20, 30, 40, 60, 120 seconds defines the length of an alert in response to an alarm event.
Alarm Type
Normally Open alarm contacts are of type: ‘Normally Open’
Normally Closed alarm contacts are of type: ‘Normally Closed’
Main Output
Split-Screen Alert split-screen is displayed during an alert; the border of alarmed
segments flash; returns to original state when alert ends.
Full-Screen Alert alarmed cameras displayed full-screen during an alert; the most recently alarmed camera will be displayed; returns to its
original state when alert ends.
Ignore Alerts alarms are ignored.
Auxiliary Output
Full-Screen Alert alarmed cameras are displayed full-screen during an alert; the most recently alarmed camera will be displayed; returns to
split-screen display when alert ends.
Always Sequencing full-screen sequencing of cameras; missing cameras are
skipped; alarms are ignored.
Always Split-Screen split-screen is displayed, alarms are ignored.
Auxiliary Sequence Period
4, 8, 10, 20, 30, 40, 60, 120 seconds defines the dwell period for the auxiliary channel’s auto- sequencer; this is only relevant if ‘Auxiliary Output’ behaviour
is set to ‘Always Sequencing’.
Sound During Alert
Yes / No defines whether beep tones are made at the start of an alert.
Flash Borders
Yes / No defines whether segment borders are flashed when alarmed.
Show Identifiers
Yes / No defines whether camera identifiers are displayed in each
segment of the split-screen display.
Lock Layout
Yes / No when set to YES the layout is locked into the ‘classic’ quad style; when set to NO the operator is allowed to select the
layout via the keyboard.

MAN-0803-1298-1 Product Manual: DQ94 3
4.
4.4.
4. Operation
OperationOperation
Operation
Camera Selection
You tap a number key to view the corresponding camera at full screen and tap to view all cameras
simultaneously in a split screen format.
Selection of Layout
Tap one of the following key combinations to step through the available layouts.
Circles have been drawn to illustrate aspect
ratio distortion in the displayed image.
Note that the layout can only be altered if the
unit has been configured such that the ‘LOCK
LAYOUT’ option is set to ‘NO’.
Status Lamp
Lamp State Indication
on main channel is showing a split-screen display
off main channel is showing a full-screen display
flashing the unit is in an alert state
select 3-way layout
1 2 3 4
HOLD TAP
select 4-way layout
1234
HOLD TAP
select 2-way layout
1 2 3 4
HOLD TAP

MAN-0803-1298-1 Product Manual: DQ94 4
5.
5.5.
5. Specifications
SpecificationsSpecifications
Specifications
Video
Camera Inputs: 4; loop-through for each; jumpers for 75Ωterminators
Video Outputs: 2
Format: composite 625-line PAL video, 75Ωterminated, 1Vpk-pk
Connectors: 10 x BNC
Main Video Output
Basic Behaviour: full-screen / split-screen selected via keyboard
Configurable Behaviour: full-screen on alarm, or …
split-screen on alarm, or …
ignore alarms
Auxiliary Video Output
Configurable Behaviour: permanent split-screen, or …
normally split-screen, but full-screen on alarm, or …
permanent full-screen sequencing (for a spot monitor)
Keyboard
Keys: 5; tactile switches flush with panel; panel covered with a membrane
Alarms
Alarm Inputs: 4; programmable as either ‘all N/O’ or ‘all N/C’
Alert Period: programmable - from 4 seconds up to 2 minutes
AlertTone: can be silenced
AlertRelay: single-pole changeover; contacts are floating;
max. ratings: 24V, 200mA, 2W
Connector: RJ-45 connector
Power
SupplyRequirements: 12V; < 5W
Connector: D.C. Socket 2.1mm
Power Adapter
Input: 230Vac +/- 10%; 50Hz
Output: 12Vdc @ 500mA; unregulated; class II
Dimensions
L x D x H: 254 x 150 x 43 (mm)