Guardian Technologies Home Security System DFT 150 175 User Manual
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DVST Installation Guide  
January 1996  
DFT-0150  
INSTALLATION GUIDE  
Dedicated Micros UK Ltd.  
11, Oak Street, Swinton, Pendlebury.  
Manchester.  
M27 4FL.  
United Kingdom.  
Direct Telephone: 0161 727 3241 Direct Fax: 0161 794 4464  
Outside UK. Telephone: Int +(44) 161 727 3241 Fax: Int +(44) 161 794 4464  
Dedicated Micros U.S.A. Inc.  
11515 Sunset Hills Road, Reston, Virginia 22090, U.S.A.  
Telephone: Int +(703) 904 7738 Fax: Int +(703) 904 7743  
Dedicated Micros (Australia) PTY.  
Unit 1, 30 Leighton Place, Hornsby NSW2077, Australia.  
Telephone: Int +(612) 482 1857 Fax: Int +(612) 482 1647  
Dedicated Micros (Asia) Ltd.  
1 Tannery Road, #05-04/05 Cencon 1, Singapore 1334.  
Telephone: Int +(65) 741 0138 Fax: Int +(65) 741 0221  
Dedicated Micros (Belgium) Ltd.  
Interleuvenlaan 64, B-3001 Leuven, Belgium  
Telephone: Int +(32) 16 40 12 28 Fax: Int +(32) 16 40 02 43  
©
Dedicated Microcomputers Group Ltd. 1995  
All rights reserved. No part of this publication may be  
reproduced or distributed in any form or by any means  
without the prior written permission of the publisher.  
Dedicated Micros Ltd  
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6 April 1995  
DVST InstallationGuide  
Microcom ® is a registered trademark of:  
Microcom Systems, Inc.  
Gandalf ® is a registered trade mark of:  
Gandalf Digital Communications Ltd.  
Page ii  
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DVST InstallationGuide  
Safety  
Safety  
Read Instructions - All the safety and operatinginstructionsshould be read before the unit is operated.  
Retain instructions - The safety and operatinginstructionsshould be retained for future reference.  
Heed warnings - All warnings on the unit and in the operating instructions should be adhered to.  
Follow instructions - All operating and user instructions should be followed.  
Cleaning - Unplug the unit from the outlet before cleaning. Do not use liquid cleaners or aerosol  
cleaners. Use a damp cloth for cleaning.  
Attachments - Do not use attachments not recommended by the product manufacturer as they may  
cause hazards.  
Water and Moisture - Do not use this unit near water - for example, near a bath tub, wash bowl,  
kitchen sink, or laundry tub, in a wet basement, near a swimming pool, in an unprotected  
outdoor installation, or any area which is classified as a wet location.  
Accessories - Do not place this unit on an unstable stand, tripod, bracket, or mount. The unit may fall,  
causing serious injury to a person and serious damage to the unit. Use only with a stand,  
tripod, bracket or mount recommended by the manufacturer, or sold with the product.  
Any mounting of the unit should follow the manufacturer’s instructions, and should use a  
mounting accessory recommended by the manufacturer.  
An appliance and cart combination should be moved with care. Quick stops, excessive  
force, and uneven surfaces may cause the applianceand cart combinationto overturn.  
Ventilation - Openings in the enclosure are provided for ventilation and to ensure reliable operation of  
the unit and to protect it from overheating. These openings must not be blocked or  
covered. This unit should not be placed in a built-in installation unless proper ventilation  
is provided.  
Power Sources - This unit should be operated only from the type of power source indicated on the  
manufacturer’s label. If you are not sure of the type of the power supply you plan to use  
consult your appliance dealer or local power company. For units intended to operate  
from battery power, or other sources, refer to operating instructions.  
Grounding or Polarization - This unit may be equipped with a polarized alternating-current line plug  
(a plug having one blade wider than the other). This plug will fit into the power outlet only  
one way. This is a safety feature. If you are unable to insert the plug fully into the outlet,  
try reversing the plug. If the plug should still fail to fit, contact your electrician to replace  
your obsolete outlet. Do not defeat the safety purpose of the polarized plug.  
Alternately this unit may be equipped with a 3-wire grounding-type plug, a plug having a  
third (grounding) pin. This plug will only fit into a grounding-type power outlet. This is a  
safety feature. If you are unable to insert the plug into the outlet, contact your electrician  
to replace your obsolete outlet. Do not defeat the safety purpose of the grounding- type  
plug.  
Power-Cord Protection - Power-supply cords should be routed so that they are not likely to be  
walked on or pinched by items placed upon or against them, paying particular attention  
to cords at plugs, convenience receptacles, and the point where they exit from the  
appliance.  
Overloading - Do not overload outlets and extensioncords as this can result in a fire or electric shock.  
Object and Liquid Entry - Never push objects of any kind into this unit through openings as they may  
touch dangerous voltage points or short-out parts that could result in a fire or electric  
shock. Never spill liquid of any kind on the unit.  
Dedicated Micros Ltd  
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Safety  
DVST InstallationGuide  
Servicing - Do not attempt to service this unit yourself as opening or removing covers may expose  
you to dangerous voltage of other hazards. Refer all servicing to qualified service  
personnel.  
Damage Requiring Service - Unplug the unit from the outlet and refer servicing to qualified service  
personnel under the following conditions:  
(a)When the power-supply cord or plug is damaged.  
(b)If liquid has been spilled, or objects have fallen into the unit.  
(c)If the unit has been exposed to rain or water.  
(d)If the unit does not operate normally by following the operating instructions. Adjust  
only those controls that are covered by the operating instructions as an improper  
adjustment of other controls may result in damage and will often require extensive work  
by a qualified technician to restore the unit to its normal operation.  
(e)If the unit has been dropped or the cabinet has been damaged.  
(f)When the unit exhibits a distinct change in performance this indicates a need for  
service.  
Replacement Parts - When replacement parts are required, be sure the service technician has used  
replacement parts specified by the manufacturer. A replacement lithium battery is  
available from Dedicated Micros Ltd.  
Safety Check - Upon completion of any service or repairs to this unit, ask the service technician to  
perform safety checks to determine that the unit is in proper operating condition.  
Coax Grounding - If an outside cable system is connected to the unit, be sure the cable system is  
grounded.  
UNPACKING - The shipping carton is the safest container in which the unit may be transported. Save  
it for possible future use.  
WARNING - TO PREVENT FIRE OR SHOCK HAZARD, DO NOT EXPOSE THIS EQUIPMENT TO  
RAIN OR MOISTURE.  
The lightning flash with arrowhead symbol within an equilateral triangle is intended to  
alert the user of this equipment that there are dangerous voltages within the enclosure  
which may be of sufficient magnitude to constitute a risk of electric shock.  
The exclamation point within an equilateral triangle is intended to alert the user to the  
presence of important operating and maintenance (servicing) instructions in the  
literature accompanying the appliance.  
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DVST InstallationGuide  
RegulatoryNotes  
Regulatory Notes  
FCC AND DOC INFORMATION  
(U.S.A. and Canadian Models Only)  
WARNING  
This equipment has been tested and found to comply with the limits for a Class A digital  
device, pursuant to part 15 of the FCC rules. These limits are designed to provide  
reasonable protection against harmful intereference when the equipment is operated in  
a commercial enviroment. This equipment generates, uses, and can radiate radio  
frequency energy and, if not installed and used in accordance with the instruction  
manual, may cause harmful interference to radio communications. Operation of this  
equipment in a residential area is likely to cause harmful interference in which case the  
user will be required to correct the interference at his own expense.  
If necessary, the user should consult the dealer or an experienced radio/television  
technician for corrective action. The user may find the following booklet prepared by the  
Federal Communications Commission helpful: “How to identify and Resolve Radio-TV  
Interference Problems”. This booklet is available from the U.S. Government Printing  
Office, Washington, DC20402, Stock No. 004-000-00345-4.  
This reminder is provided to call the CATV system installer’s attention to Art. 820-40 of  
the NEC that provides guidelines for proper grounding and, in particular, specifies that  
the cable ground shall be connected to the grounding system of the building, as close to  
the point of cable entry as practical.  
CE Mark  
This product is marked with the CE symbol and indicates compliance with the European  
Community EMC directive 89/336/EEC.  
This mark indicates that this product meets the following technical standards.  
• EN 55022 1987 - “Limits and Methods of Measurement of Radio Interference  
Characteristics of information Technology Equipment”.  
• BSEN 50082-1 - “Electromagnetic compatibility - Generic immunity standard  
Part 1: Residential, commercial, and light industry”.  
• IEC 801-2 1984, IEC 801-2 1991 - “Electromagnetic compatibility for  
industrial process measurement and control equipment Part 2: Electrostatic  
discharge requirements”.  
• IEC 801-3 1984 - “Electromagnetic compatibility for industrial-process  
measurement and control equipment Part 3: Radiated electromagnetic field  
requirements”.  
Dedicated Micros Ltd  
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RegulatoryNotes  
DVST InstallationGuide  
• IEC 801-4 1988 - “Electromagnetic compatibility for industrial-process  
measurement and control equipment Part 4: Electrical fast transient/burst  
requirements”.  
A “ Declaration of Conformity ” in accordance with the above standards has been made  
and is recorded at: Dedicated Micros Ltd., Pendlebury, Manchester, England.  
Page vi  
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DVST InstallationGuide  
Table of Contents  
Table of Contents  
1 Introduction  
1
1
1
1
1
1.1  
1.2  
1.3  
1.4  
DFT-0150 Transmitter  
Telemetry  
Event monitoring (Alarm) option  
Audio option  
2 Unpacking the unit  
3
3
3
2.1  
2.2  
Items in packing  
Packing the DVST  
3 Operation  
5
5
5
6
6
6
6
3.1  
3.2  
3.3  
3.4  
3.5  
3.6  
Callback  
Alarms feature  
Freeze all alarms  
No frozen images  
Offline frozen alarm  
Track last alarm  
4 Installation  
7
7
4.1  
Rear Panel connections  
Fig: 1 Rear panel layout  
Key to Fig: 1  
4.2  
4.3  
Power inputs  
8
8
37 way alarm connecton  
Fig: 2 Alarm input/output connections  
5 Setup  
9
9
9
10  
10  
5.1  
5.2  
5.3  
5.4  
What you require  
Setup using a PC  
Remote setup  
DVST commands  
HELP  
QUIT  
RESET  
VIEW  
5.5  
Define camera inputs  
MAX=nn  
11  
COL=nn  
MON=nn  
5.6  
5.7  
Auxiliary port C3AMnn=  
AUX=  
Define auxiliary ports 1,2,3  
PORT=  
11  
12  
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Table of Contents  
DVST InstallationGuide  
6 Demonstration Mode  
13  
6.1  
Demonstration mode  
DEMO=  
13  
EXTCLK=  
6.2  
6.3  
Demo cable  
14  
Fig: 3 Wiring details for demo cable  
Connecting the demo cable  
Single cable operation  
15  
Fig: 4 Demo Cable Connections  
7 Modems  
17  
7.1  
7.2  
PSTN connection (modem)  
MODEM commands  
MODEM=  
17  
17  
MODEM  
MBAUD=  
MODEM2  
PORT=  
7.3  
Modem configuration strings  
MODSTR=  
19  
MOD2STR=  
USER=...  
SEND  
DIAL=  
7.4  
7.5  
Modem operation  
Connecting a modem in direct mode  
Call request  
21  
22  
Call answer request  
Call disconnect.  
Configuration of modem in direct mode  
Using a modem in ATMODE  
Call request  
Call answer request  
Call disconnect  
General settings for modems in ATMODE 23  
All modems:  
Synchronous modems:  
Asynchronous modems:  
MOTOROLA VFAST  
Country specific settings  
No dialtone  
7.6  
7.7  
7.8  
7.9  
23  
25  
27  
Transmission speed  
Microcom V3242  
Syncronous mode :  
DIP switch settings synchronous operation  
DIP switch settings asyncronous operation  
7.10 Trailblazer  
Async mode  
7.11 OCTOCOM OSI 8196A  
28  
29  
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DVST InstallationGuide  
Table of Contents  
8 Terminal Adapters  
31  
8.1  
ISDN connection (Terminal Adapter)  
DUALISDN=  
31  
ISDN=  
8.2  
Connecting a terminal adapter in direct mode  
Making a Call  
32  
Answering a Call  
Call disconnection  
Configuring a terminal adapter for direct mode operation  
Gandalf TA1  
Direct mode  
ASCOM 5000 / CITAM  
ATMODE  
8.3  
8.4  
33  
34  
Fig 5: ASCOM internal dip switch settings (ATMODE)  
X21  
Fig 6: ASCOM internal dip switch settings (X21)  
8.5  
Dataflex TA  
38  
9 Leased Line Transmission  
39  
39  
39  
40  
41  
9.1  
9.2  
9.3  
9.2  
Leased line terminology  
DVST set up for leased line operation  
Lleased line operation  
ASCOM 64000 baseband modem  
10 Calls  
43  
43  
10.1 Passwords  
PASSWORD=  
PASSn=  
SPASSWORD=  
10.2 On screen titling  
44  
45  
46  
SYSTEM=  
TIME=  
DATE=  
TLPOS=  
TDPOS=  
10.3 Telephone number entries / connection commands  
TELn=  
TELn  
TYPEn=  
TIMER=  
DIALCLR=  
10.4 Callback  
CALLBACK=  
11 Images and Transmission  
Screen display - periscope mode  
11.1 Image size  
47  
47  
Target image size =  
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Table of Contents  
DVST InstallationGuide  
12 Alarms & Events  
49  
12.1 Purpose & intended use  
49  
49  
49  
12.2 Alarm connections  
12.3 ALARM settings  
ASYS=  
AON=n  
AOFF=n  
ANOnn  
ANCnn  
Images transmitted on alarm  
ATYPEn=  
AOUT=  
ALMODE=  
ADIAL=n  
13 Audio  
53  
53  
13.1 Equipment required but not supplied  
Fig: 7 End Panel Layouts  
13.2 Connectint the DAL100  
Microphone  
54  
Speaker  
Power supply  
DVST connections  
Set port usage  
Fig: 8 Microphone Connection  
14 Cable Assemblies  
55  
56  
57  
58  
59  
60  
14.1 X21 to V35 cable assembly  
14.2 X21 cable assembly  
14.4 V24 SYNC cable assembly  
14.5 RS232 cable assembly (DVST-PC)  
14.6 RS232 cable assembly (DVST-DAL)  
15 Glossary  
16 Returns Procedure  
61  
63  
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DVST InstallationGuide  
Introduction  
1
Introduction  
DVST is the generic name for a range of products designed to store and transmit digital  
pictures at a higher quality and speed than previously possible.  
1.1  
1.2  
1.3  
DFT-0150 Transmitter  
The DFT-0150 (Digital Fast Transmission) transmitter will process the images from up  
to sixteen cameras for transmission or reception over ISDN or PSTN telephone lines.  
Telemetry  
The DFT 0150 can control telemetry cameras at the local site using built in telemetry  
equipment.  
Event monitoring (Alarms)  
The internal alarm verification system for DFT0150 transmitter allows the unit to monitor  
and act on external events. This can freeze a picture from the camera that corresponds  
to a specific alarm input. The unit will then transmit this picture to the receiving station  
where the operator can acknowledge the event and take relevant action.  
This versatile alarm interface is a light duty 16 input / 2 output unit.  
1.4  
Audio option  
Audio transmission is available allowing two way, half duplex, (one way at a time)  
communication. (Transmission medium must be 19200baud or faster)  
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Introduction  
DVST InstallationGuide  
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DVST InstallationGuide  
Unpackingthe unit  
2
Unpacking the unit  
2.1  
Items in packing  
The unit should be carefully unpacked and the packing materials retained. Check that all  
the contents on the following checklist are present:  
DVST Unit  
q
Power Lead with molded IEC connector  
q
Rack mount conversion kit  
q
Installation Guide  
q
2.2  
Packing the DVST  
If the DVST is to be returned for repair or transported to another location the original  
packing should be used.  
The unit should first be wrapped in the polythene bag. The preformed end pieces are  
then placed at either side of the unit which can then be placed inside the cardboard box.  
The box should be firmly sealed using appropriate tape.  
If the unit is to be returned for repair ensure a valid returns note is clearly written  
on the side of the box.  
Dedicated Micros Ltd  
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Unpackingthe unit  
DVST InstallationGuide  
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DVST InstallationGuide  
Operation  
3
Operation  
3.1  
Callback  
The callback feature allows an operator at a monitoring station to call a DFT0100  
transmitter on site and configure the unit to automatically call them back, ensuring that  
the telephone call is charged to the transmitting and not the receiving site.  
On sending a callback request, the monitoring station disconnects and waits for the  
transmitting site to call back. With callback enabled, connection time is approximately  
twice that of normal connection time.  
3.2  
Alarms Feature  
The alarm system for the DFT0150 transmitter allows the unit to freeze the pictures from  
cameras that correspond with the alarm inputs that have been triggered. These pictures  
are then transmitted to a receiving station where they can be acknowledged and the  
relevant action taken.  
On an alarm the transmitter will automatically call the telephone number stored in  
telephone entry 0.  
If this number is busy then it will call the number stored in telephone entry 1. The  
maximum number of telephone entries can be set between 1 and 16.  
If the fall back numbers are busy the transmitter will automatically keep calling between  
telephone entries 0 and 1 until one becomes free. However the user can configure the  
DFT0150 to automatically call upto four numbers unitl one becomes free.  
Depending on how the transmitter has been configured, incoming alarms are handled in  
different ways.  
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Operation  
DVST InstallationGuide  
3.3  
Freeze All Alarms  
Each alarm activation stores the corresponding camera image and transmits the frozen  
image to the receiver.  
The frozen pictures with a record of the time, date and camera number will be stored in  
memory until the alarms have been acknowledged.  
3.4  
No Frozen Images  
No frozen images are sent on alarm. If several alarms ocour to trigger the machine to  
dial, one shot from each will be sent in quick successionwithout any operator control.  
Any alarms present whilst on line will be indicated on the receive unit display baseline.  
3.5  
3.6  
Offline Frozen Alarm  
The first alarm activation stores the corresponding camera image and transmits the  
frozen image to the receiver.  
Track Last Alarm  
With this mode no frozen images are sent.  
If several alarms ocour to trigger the machine to dial, one shot from each alarm will be  
sent in quick succession without any operator control, following an intruder. Any alarms  
present whilst on line will be displayed full screen and un frozen.  
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DVST InstallationGuide  
Installation  
4
Installation  
The DVST Transmitter is supplied as a wall mounted unit.  
4.1  
Rear Panel connections  
The DVST Transciever uses BNC connectors for all video inputs and outputs. Other  
data connections are made via standard D type connectors. The optional keyboard is  
connected by a 9 pin D type female plug.  
Fig: 1 Rear panel layout  
WARNING: DO NOT CONNECT THE UNIT TO OTHER EQUIPMENT WITH POWER ON.  
Key to Fig: 1  
1
2
3
Cmaera Inputs  
ISDN 1  
ISDN 0  
4
5
6
Modem  
AUX 1  
AUX 2  
7
8
9
AUX3  
IIc Socket  
10 Alarm Inputs  
11 Power Connection  
13 ISDN  
Connection  
Telemetry Out 12 Integral Dataflext TA Unit  
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Installation  
DVST InstallationGuide  
4.2  
Power Inputs  
The DVST Transmitter is powered via a standard mains IEC cable which plugs into the  
rear panel. Power cable retaining clip prevents the cable from dropping out.  
The power supply is self adjusting to the mains input and can accept a voltage from 90 to  
260 volts.  
Mains supply frequency can be either 50 or 60 cycles.  
4.3  
37 Way Alarm Connections  
Fig: 2 Alarm input/output connections  
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Setup  
5
Setup  
5.1  
What you require  
Setup of the DVST DFT-0150 is undertaken using a PC (Personal Computer)  
connected to the AUX0 port on the front panel.  
To set up the DVST using a PC you will need the following:  
A personal computer with an RS232 port.  
A connection cable between the serial port of the computer and the serial port  
(AUX3) of the DVST unit. (Details are in the cable section of this manual)  
A suitable communicationsprogram for your PC that can operate at 9,600 baud.  
i.e. Procomm.  
5.2  
Setup using a PC  
Procedure:  
Turn off the power supply to the DVST and the PC.  
Connect the two units together using a serial cable.  
Power up both DVST and the PC then start the communication program.  
Make sure that the speed and protocol of the communications program are as  
follows:  
Baud Rate=9,600  
Parity=None  
Data Bits=8  
Stop Bits=1  
Local setup mode can be entered by typing “ +++<ret>” or for MCI commands <ESC>  
M\Setup on the keyboard. The DVST commandswill appear on the screen of the PC.  
If a password has been set the screen will go blank and the prompt PASSWORD> will  
appear on the screen and a valid password must be entered followed by pressing the  
<ENTER> key. If this entered correctly the prompt CMD> will appear on screen. More  
details on the operation of passwords appear later in this manual.  
Typing HELP and pressing the <ENTER> or return key will list all the available DVST  
commands. These are listed with brief descriptions to assist users familiar with set up of  
the DVST. All these commands are explained in detail within the manual, and have been  
grouped in a logical order to make set up of the DVST easy.  
Typing VIEW and then pressing <ENTER> will list the present settings of the DVST. To  
exit the SETUP mode type QUIT then <ENTER>.The DVST will then return to normal  
operation.  
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Setup  
DVST InstallationGuide  
5.3  
Remote Setup  
Remote DVST units can also be set up in the same manner as a local DVST. The same  
procedure should be followed when the DVST is on line to a remote unit. When the  
SETUP key is pressed the screen will go blank and the command prompt REM> will  
appear on screen.  
Proceed as for the local system.  
Note:  
A PC cannot initiate remote set up with the “+++” command.  
5.4  
DVST Commands  
Most commands are typed in direct and terminated by pressing the <ENTER> key on a  
PC.  
HELP  
Lists all commands available.  
Note:  
Paragraphs 4.6 onwards detail the command information listed by the help option and  
have been grouped together in the logical order that should be used when setting up a  
DVST system.  
QUIT  
Exits the SETUP mode.  
This returns the DVST to normal operation. If a MODEM is connected  
and the DVST is set to MODEM=ON the initialisation strings will be  
sent to the MODEM.  
RESET  
Resets DVST to factory defaults  
This command is used to completely reset the DVST system.  
(All values are reset to their default values.)  
Note:  
These values are stored in an integrated circuit called an EEPROM. This is not  
dependent on a battery backup and will retain its settings indefinitely without a power  
supply.  
VIEW  
Display current DVST settings  
This will display all the current DVST settings.  
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DVST InstallationGuide  
Setup  
5.5  
Define Camera Inputs  
MAX=nn  
Sets maximum number of cameras  
(default, 8)  
Range is 1 to 16.  
Correct settings of this ensures that any receiving station does not  
spend time trying to collect invalid camera inputs.  
COL=nn  
MON=nn  
Set camera to Colour  
Set camera to Monochrome  
(default, all cameras set to colour)  
Format is COL=01, COL=05 etc.  
Format is MON=06, MON=15 etc.  
It is important that camera inputs are correctly defined as colour or  
monochrome.  
CAMnn=  
Set camera title nn to ...  
(default, Camera 01=CAMERA 01 etc.)  
Format is CAM01=FRONT DOOR  
5.6  
Auxiliary Port 3  
The auxiliary port 3 on the DVST can be used for programming the DVST with a PC or  
for generating printer reports. Protocol is RS232 8 characters, no parity, one stop bit,  
default at 9,600 baud.  
AUX=  
Set AUX port usage:  
TERM, PRINT, MCI, DTMF, ENG, NULL  
(default, ENG)  
TERM is for terminal operation, control by PC.  
PRINT operates as a printer connection.  
MCI is for machine control interface.  
DTMF is used to echo telemetry codes at the port.  
ENG is used to display debug.  
NULL turns the port off.  
Note:  
Altering this command from a PC is valid, but after changing the setting the PC it will no  
longer communicate with the DVST. The reason is that the port has now been assigned  
a different task. .  
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Setup  
DVST InstallationGuide  
5.7  
Define Auxiliary Ports 1,2, 3  
The auxiliary ports 1, 2, 3 on the DVST can be configured to operate with additional  
equipment i.e. printers, telemetry equipment and PC based conrol systems (MCI).  
PORT=  
Set PORT usage,  
(Each field entry is separated by a space. If the  
commands are entered correctly the new settings will  
be displayed):  
<AUX PORT> <BAUD RATE> <PARITY>  
<DATA BITS> <STOP BITS> <FORMAT>  
(default settings )  
AUX1 N 8 1 38400 PKT  
AUX2 N 8 1 38400 DATA  
AUX3 N 8 1 9600  
ENG  
AUX PORTAUX1, AUX2, AUX3  
BAUD RATE1200, 2400, 4800, 9600, 19200, 38400  
PARITYN (None) O (Odd) E (Even)  
DATA BITS5, 6, 7, or 8  
STOP BITS1 or 2  
FORMAT  
Aux1DATACharacter based data operation  
PKTPacket based operation  
BLKBlock data operation  
NULLTurn off port  
Aux2DATACharacter based data operation  
NULLTurn off port  
Aux3TERMTerminal operation  
PRINTSerial printer connection  
MCIMachine control interface  
DTMFSend telemetry codes to port  
ENGDisplay debug messages  
NULLTurn off port  
Example  
PORT = Aux3<space>9600<space>N<space>8<space>1<space>Term <return>  
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DVST InstallationGuide  
DemonstrationMode  
6
Demonstration Mode  
This is provided to allow two DVST units to be connected back to back without the need  
for connection to MODEMs or Terminal Adapters.  
A special demonstrationcable is used, details of this are explainedlater in the chapter.  
6.1  
Demonstration mode  
DEMO=  
Turn the demonstration mode ON / OFF  
Turns the demonstration mode on or off. The demonstration mode is  
quit if the power to the DVST is turned off.  
Note: ISDN must be set to Direct Mode  
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DemonstrationMode  
DVST InstallationGuide  
6.2  
Demo Cable  
This cable allows two DVST units to be connected back to back without the need for  
connection to MODEMs or Terminal Adapters.  
Fig: 3 Wiring details for demo cable  
Tech Note:  
This is a synchronous balanced transmission. Transmit and receive lines therefore  
cross yet maintain polarity. The flying lead is used to source a clocking signal from the  
MODEM port.  
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DVST InstallationGuide  
DemonstrationMode  
6.3  
Connecting the demo cable  
Single cable operation  
The cable connects PORT 0 on the transmit unit to PORT 0 on the receive unit. The  
small flying lead connects to the MODEM port on the receive unit.  
Fig: 4 Demo cable connections  
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DemonstrationMode  
DVST InstallationGuide  
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DVST InstallationGuide  
Modems  
7
Modems  
7.1  
7.2  
PSTN Connection (Modem)  
Connection to a PSTN telephone line is via a modem and modem port.  
MODEM Commands  
MODEM=  
Sets MODEM operation, three parameters:  
The MODEM= command controls three distinct parameters.  
OFF  
(default, OFF)  
Tech note: The reason is as follows; if set to ATMODE the DVST attempts to communicate with the  
MODEM when starting up, exiting set up mode etc. The DVST will wait a set period of  
time for replies before giving up. This will considerably slow the system if no MODEM is  
attached.  
DIRECT, ATMODE  
(default, ATMODE)  
The DIRECT mode is used if the MODEM has its telephone numbers  
stored internally and the DVST does not pass telephone numbers for  
dialling.  
The ATMODE is most often used. The DVST passes numbers from  
the dial menu to the MODEM which then initiates a call.  
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Modems  
DVST InstallationGuide  
SYNC  
The sync or synchronous mode relies on the modem generating clock  
signals to the DVST.  
MODEM  
Modem switches from the command mode CMD> to allow direct  
control of a connected MODEM. The speed of communication with the  
MODEM will be as set with the MBAUD= command.  
This is called transparent MODEM mode and is terminated by  
pressing the ESCAPE or ESC key.  
MBAUD=  
Set MODEM port ASYNC baud rate.  
(default, 19200)  
9600, 19200, 38400  
This command sets the speed of communication between the DVST  
and the MODEM when AUX 1 is used for asynchronous mode. The  
speed of communication in the Synchronous mode is determined by  
the clock signal supplied by the MODEM.  
ASYNC  
In the asynchronous mode the MODEM controls the flow of data using  
RTS/CTS signals.  
MODEM2  
PORT=  
Modem switches from the command mode CMD> to allow direct  
control of a connected MODEM through AUX 1. The speed of  
communication with the MODEM will be as set with the PORT=  
command.  
This is called transparent MODEM mode and is terminated by  
pressing the ESCAPE or ESC key.  
AUX1, 19200, N 8 1, MODEM2  
Refer Chapter Setup (Basic).  
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DVST InstallationGuide  
Modems  
7.3  
Modem configuration strings  
All MODEMs need special configuration, depending on how the MODEM is to be used  
and how the DVST will interact with it.  
Standard MODSTR set ups configure the MINIT and SREG strings, the USER string is  
left free for any extra configuration that may be needed.  
MODSTR=  
Set type of modem: FAST or SYNC  
(default, FAST)  
This setting (shortened form of MODem STRings) automatically sets  
up the DVST to operate with one of the three recommended  
MODEMs.  
FAST  
This sets the MINIT and SREG strings for correct synchronous  
operation with the MOTOROLA 326x VFAST MODEM. The MODEM  
configuration strings are set up as follows:  
MINIT=AT&M1 &D2 &C1 *FLO *AA1 *DTO *OC1  
SREG=ATS10=30S25=0  
SYNC  
This sets the MINIT and SREG strings for correct synchronous  
operation with the MICROCOM 4232bis MODEM. The MODEM  
configuration strings are set up as follows:  
MINIT=AT&M1 &D2 \GO \EO E1 &C1 \JO  
SREG=ATSO=1  
MOD2STR=  
Set type of modem: FAST, SYNC, ASYNC or ZYXEL  
(default, )ASYNC  
FAST  
This sets the MINIT and SREG strings for correct synchronous  
operation with the MOTOROLA 326x VFAST MODEM. The MODEM  
configuration strings are set up as follows:  
M2INIT=AT&M1 &D2 &C1 *FLO *AA1 *DTO *OC1  
SREG2=ATS10=30S25=0  
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Modems  
DVST InstallationGuide  
SYNC  
This sets the MINIT and SREG strings for correct synchronous  
operation with the MICROCOM 4232bis MODEM. The MODEM  
configuration strings are set up as follows:  
M2INIT=AT&M1 &D2 \GO \EO E1 &C1 \JO  
SREG2=ATSO=1  
ASYNC  
This sets the MINIT and SREG strings for correct asynchronous  
operation with the Trailblazer MODEM. The MODEM configuration  
strings are set up as follows:  
M2INIT=ATSO=1 &C1 &K3 E1 V1 &MO  
SREG2=ATS7=60 S10=7 S37=7  
~S50=255 ~S51=5 ~S52=1 ~S110=0 ~S104=0  
ZYXEL (US Modems Only)  
This sets M2INIT and SREG2 for the correct synchronous operation  
with the ZYXEL modem. The modem configuration strings are set up  
as follows:  
M2INIT=AT&M1&D2&C1&H0  
SREG2=ATS10=30 S0=1  
USER=...  
SEND  
Available for user configuration  
(Default, blank)  
The USER string is for any extra commands that the user may need to  
send to the modem in addition to the MINIT and SREG settings.  
Send current modem configuration  
This transmits the information contained in the MINIT, SREG and  
USER strings to the MODEM.  
Although this command can be issued from the command mode at any  
time, it is also invoked at the termination of any call and when the  
command mode is exited with the QUIT command.  
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DVST InstallationGuide  
Modems  
DIAL=  
Modem dial string  
(default, ATDT)  
This is the command that must precede all numbers that the MODEM  
has to dial. Typically the MODEM will dial using either pulse or tone  
dialling. This is dependent on the telephone exchange the MODEM is  
connected to, most modern exchanges are able to accept tone dialling  
which is faster than the older pulse dialling method.  
For tone dialling: DIAL=ATDT  
For pulse dialling: DIAL=ATDP  
Tip:  
Extra information can be linked to the above commands, internal exchanges that  
require a “9" to be dialled to access outside lines can have this added to the dial string,  
typically ATDT9.  
7.4  
Modem Operation  
All modern modems respond to a set of “Hayes” commands. There are several  
differences in these commands from manufacturer to manufacturer. It is important to  
use the correct commands with each modem and not to attempt to use one  
manufacturer’s set up with another manufacturer’s modem.  
If possible modems should be linked to DVST in the synchronous mode. Some  
modems, for example those using PEP (Packet Ensemble Protocol), can only be used  
in the asynchronous mode.  
Cables for connection to synchronous and asynchronous modems are different and are  
not interchangeable. Refer to the Cable Assemblies chapter for further details.  
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Modems  
DVST InstallationGuide  
7.5  
Connecting a modem in direct mode  
This mode uses a modem in a ‘dumb’ mode, and purely relies on the hardware control  
lines. Telephone number selection, and all other configuration must be performed at the  
modem.  
The modem is controlled using DTR (Data Terminal Ready), and indicates it’s status  
using DCD (Data Carrier Detect).  
Note:  
This mode is not recommended, easier operation is achieved in ATMODE.  
Call request  
A call is requested by making DTR active (high). At this point the MODEM dials it’s  
stored number, and attempts to establish the call with the remote end. When the call  
connect has been completed the modem raises it’s DCD line, confirming it is connected  
with the remote location.  
A call already being active is indicated by the DCD line being active (high) from the  
MODEM.  
Call answer request  
If a call is incoming, the modem answers the call, establishes the physical link, and then  
raises DCD to inform the DVST unit that a call is present. The DVST unit responds to this  
by taking DTR active (high).  
Call disconnect.  
This is requested by dropping the DTR signal. A successful disconnect is confirmed by  
the DCD line being dropped by the MODEM. In this mode the DTR line remains low.  
Configuration of modem in direct mode  
No configuration can be performed by the system, however the following are required of  
the modem :  
Select synchronous operation.  
Dial stored number on low to high transition of DTR.  
Disconnect on a high to low transition of DTR.  
DCD must follow remote carrier.  
Ignore DTR to answer.  
Auto-answer. ( If required ).  
No flow control enabled.  
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DVST InstallationGuide  
Modems  
7.6  
Using a modem in ATMODE  
In this mode the Hayes set of commandsis used, all of which begin with the letters AT.  
Both call setup and configuration are performed using these commands.  
The commands can be configured on the DVST unit in setup mode.  
The modem is also controlled using DTR (Data Terminal Ready), and indicates it’s  
status using DCD (Data Carrier Detect).  
Call request  
The DTR is normally active, unless the modem channel is turned off, or the unit is in  
setup mode.  
To dial a call the system sends the dial string (set by DIAL= in the DVST setup menu ) to  
the modem, followed by the number selected.  
For synchronous operation the modem switches to synchronous mode on connection.  
When the call connect has been completed the modem raises it’s DCD line, confirming it  
is connected with the remote location. A call already being active is indicated by the  
DCD line being active (high) from the modem.  
Call answer request  
If a call is incoming, and the DTR line is high, the modem answers the call, establishes  
the physical link, and then raises DCD to inform the DVST unit that a call is present.  
Call disconnect  
This is requested by a high to low transition on DTR. A successful  
disconnect is confirmed by the DCD line being dropped by the modem.  
In this mode the DTR returns high after a short delay.  
7.7  
General settings for modems in ATMODE  
The modem is configured from the DVST unit using the following strings:  
MINIT=general modem configuration.  
SREG=typically used for setting of s-registers.  
USER=optional string, typically for individual customisation.  
DIAL=string used to dial, typically ATDT for tone dialling.  
The configuration details stored in MINIT, SREG & USER are sent on power-up, leaving  
setup mode, and on disconnecting a call. If a MODEM is not present a large delay will be  
experienced while the system waits for replies from the MODEM. To avoid this the  
command MODEM=OFF should be selected from the DVST setup menu. It is also  
possible to transmit or send these values to the MODEM using the SEND command in  
setup.  
It is also possible to communicate with the modem directly using the MODEM  
command.  
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Modems  
DVST InstallationGuide  
MODEM Requirements  
Although there are default settings for three MODEMs, other MODEMs can be  
cofigured to operate with DVST.  
As the settings vary from manufacturer to manufacturer there is not a set series of  
commands that are guaranteed to work. The following tables detail possible  
configurations, all should be checked against the MODEM manual. Before attempting  
these suggested settings the MODEM should be reset to factory defaults with the  
command AT&F or ATZ  
The following settings are required as a minimum:  
All modems:  
Action required of MODEM  
Possible AT settings  
DCD (Data Carrier Detect, sometimes abbreviated to  
CD) must be set to follow the carrier. This signal  
indicates to the DVST that a connection to another unit  
has taken place.  
&C1  
The call must disconnect on a high to low transition of  
DTR (Data Terminal Ready).  
Only answer a call if DTR is present.  
&D2  
Auto-answer may be set if required.  
S0=1  
Check MODEM manual  
Country specific  
Echo commands.  
E1  
Synchronous Modems:  
Extra action required of Synchronous MODEM  
Possible AT settings  
Asynchronous mode must be set to dial the number  
and the modem must switch to synchronous mode on  
carrier detect.  
&M1  
Flow control must be disabled.  
&K0  
Check MODEM manual  
The modem should ignore RTS.  
&R1  
Asynchronous Modems:  
Extra action required of Asynchronous MODEM  
Possible AT settings  
Asynchronous mode must be enabled.  
Flow control must be enabled on RTS/CTS.  
Error correction enabled ( if needed ).  
&M0  
&K3  
Refer to MODEM manual  
Note  
It is strongly recommended that once the modem has been configured as above, it is set  
in such a mode that this configuration is recalled automatically on power up. This will  
help to ensure correct operation after a power failure. Consult you modem instructions  
for details of how to achieve this.  
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DVST InstallationGuide  
Modems  
7.8  
MOTOROLA VFAST  
Cable required to connect to DVST: (25 to 25 - V24 SYNC)  
When installing the VFAST MODEM the following procedure should be  
followed:  
Connect the MODEM and DVST as in the installation chapter.  
Power up the DVST (leave the MODEM without power).  
Enter the setup mode and configure the DVST for operation with the VFAST MODEM by  
typing the command MODEM=ATMODE,MODSTR=FAST (default setting).  
Power up the MODEM and wait for the self test to finish.  
Type SEND then <ENTER>.  
The DVST will program the MODEM.  
It is good practice to store these values permanently in the MODEM.  
Then the values will not be lost if power is removed from the MODEM.  
To store these values proceed as follows:  
User= AT&Y1&W1 <return>  
Send <return>  
Moden displays <save completed>  
The MODEM will then always power up with the correct operational configuration.  
Country specific settings  
The answer on number of rings command *AA1 is not valid in some countries (France,  
xx) and the MINIT string should be reprogrammed with the value *AA2.  
The MINIT string is programmed as:  
MINIT=AT&M1 &D2 &C1 *FLO *OC1 *DTO *DE12 *AA1  
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Modems  
DVST InstallationGuide  
No Dialtone  
In some cases the MODEM will not recognise the prescence of a dial tone from the  
exchange. The following codes will allow blind dialling and if these are needed  
permanently they should be followed by:  
User=ATX3*BDO&Y1&W1  
Where  
ATX3 is Dial blind without presence of dial tone  
*BD0 Wait two seconds before dialling  
&W1 Store above settings in option 1  
&W1 Power up using these settings  
Note:  
This feature is country specific and may not be available in some versions of the  
MODEM’s software. Please refer to the literature supplied with your MODEM.  
Transmission speed  
The MODEM can be a little ambitious in setting the line speed. It is likely that a link will be  
established at a higher speed than the line can support without an unacceptable level of  
errors.  
In these cases it may be necessary to limit the speed of transmission until a reliable point  
is reached.  
Maximum line speed may be set by the command:  
AT*MXn  
where the value for n equals following baud rate applies:  
13 =28800  
12 =26400  
11 =24000  
10 =21600  
9 =19,200  
8 =16,800  
7 =14,400  
6 =12,000  
5 =9,600  
4 =7,200  
3 =4,800  
2 =2,400  
1 =1,200  
0 =300  
To limit the speed of transmission to 14,400 use AT*MX7. This could be stored in the  
USER= string.  
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DVST InstallationGuide  
Modems  
7.9  
Microcom V3242  
Cable required to connect to DVST 25to25 (Part No.AS-DVST-SYNC)  
Syncronous mode :  
&M1Dial async, switch on connect.  
&D2Hangs up with on to off transition of DTR - needed for auto answer.  
\G0Disables modem flow control.  
\E0Do not echo data !  
E1Echo commands.  
&C1CD follows carrier.  
\J0Turn off baud rate adjust.  
DIP Switch Settings Synchronous Operation  
Front panel switches  
Rear panel switches  
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Modems  
DVST InstallationGuide  
7.10  
Trailblazer  
Cable required to connect to DVST 9to25 (Part No. AS-DVST-ASYNC)  
Async mode  
Trailblazer in Conventional Command mode.  
&C1CD follows carrier.  
&k3RTS/CTS flow control.  
E1Echo commands  
V1Textual result codes  
&M0Async mode  
s7=60Wait 60 seconds for carrier.  
s10=7Carrier loss to disconnect time.  
s37=7Attempt to connect in PEP mode.  
~s50=255Operate in PEP mode.  
~s51=519200 bps operation.  
~s52=1Modem hangs up on DTR, only autoanswer on DTR.  
~s110=0PEP data compression disabled.  
~s104=0Disable auto dialling.  
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DVST InstallationGuide  
Modems  
7.11  
OCTOCOM OSI 8196A  
Cable required to connect to DVST 25to25 (Part No. AS-DVST-SYNC)  
Manufacturer:  
Octocom Systems, Inc.  
One Executive Drive  
Chelmsford,  
MA 01824  
USA  
No DIP switches are used.  
A single DATA push button on the front panel serves to unhook the  
modem.  
When the modem is unpacked and used for the first time the CD line  
is held on. This means that the DVST unit believes that there is an  
incoming call and waits for data.  
Proceed as follows to clear this condition:  
Wait for the DVST unit to time out  
and then press <SETUP>  
At the command prompt CMD> typeMINIT= <RET>  
At the command prompt CMD> type SREG= <RET>  
At the command prompt CMD> type USER=AT <RET>  
At the command prompt CMD> type SEND <RET>  
Wait for the information to be sent to the modem.  
At the command prompt CMD> type MODEM <RET>  
The unit will reply - Modem Mode  
Type AT <RET>  
The reply from the modem is “OK”  
Type in the following,  
The reply from the modem should be “OK”, if the reply  
is “ERROR”, try again.  
Type AT&W  
The modem will now power up without the CD line held on.  
AT&M1&C1&D2&K0&R1<RET>  
Press the <ESC> key to exit modem mode.  
At the command prompt CMD> type. MINIT=&M1 &C1 &D2 &K0 &R1.  
&M1Dial async, switch to sync on connect.  
&C1CD follows remote carrier.  
&D2 Hangs up with on to off transition of DTR - needed for auto answer.  
&K0Modem flow control is disabled.  
&R0Modem iignores RTS, CTS is on when the modem is online.  
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Modems  
DVST InstallationGuide  
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DVST InstallationGuide  
TerminalAdapters  
8
Terminal Adapters  
TA(s) or Terminal Adapters allow the DVST to communicate over digital ISDN  
telephone lines.  
8.1  
ISDN Connection (Terminal Adapter)  
Connection to an ISDN line is via a terminal adapter and Port 0. On systems using dual  
ISDN lines both Port 0 and Port 1 should be connected.  
The type of cable required to connect to the terminal adapter can vary.  
DUALISDN=  
ISDN=  
...Sets dual ISDN support ON or OFF  
(default, on)  
...Sets ISDN for ATMODE, DIRECT, X21 mode  
(default, ATMODE)  
DIRECT  
DIRECT mode relies upon the terminal adapter dialling a stored  
number or a network only accessing a single remote point. Also used  
for Demo mode (chapter 7)  
ATMODE  
ATMODE refers to Hayes AT dialling where the numbers to be dialled  
are stored in the DVST dialling menu, also used for Dedicated Micros  
Terminal Adaptor TA04  
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TerminalAdapters  
DVST InstallationGuide  
X21  
Uses X21 dialling for numbers in the DVST menu  
Connection can be made in the direct mode, where the number to be called is stored in  
the terminal adapter, or in the X21 dialling mode where the DVST passes the number to  
be dialled to the Terminal Adapter, or ATMODE.  
V35  
V35=ON/OFF  
Applicable in all modes (ATMODE, DIRECT and X21)  
8.2  
Connecting a terminal adapter in direct mode  
This uses the signallinglines; C (control) and I (indicate), to respond to and initiate calls.  
Making a Call  
The DVST initiates a call by raising C  
The TA then dials its stored number  
When the call is connected the TA raises I  
Call continues  
Answering a Call  
The TA indicates an incoming call by raising I  
The DVST responds by raising C  
Call continues  
Call disconnection  
The DVST ends a call by dropping C  
The TA confirms disconnection by dropping I  
Configuring a Terminal Adapter for direct mode operation  
As the control lines I & C areused to control calls, the following is required of the system:  
Answer : C  
Originate : C  
Disconnect : C  
Alerting : I  
DCD/I : Delay  
Note:  
The above settings are the basic requirements. TAs have many other settings which  
can affect transmission such as speed of call, type of call, circuit switch etc.  
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DVST InstallationGuide  
TerminalAdapters  
8.3  
Gandalf TA1  
Cable required 15 to 25 (2 of Part No. AS-DVST-TA1)  
The Gandalf TA1 is a dual port unit capable of simultaneiusly using both ISDN B  
channels on an ISDN2 connection.  
The Gandalf has two X21 ports, PORT0 & PORT1. They must be configured as follows  
for DIRECT connection:  
Direct Connection  
Configure the Gandalf as follows:  
CALL MODE=CKT SWITCH AUTO  
CALL TYPE=BOTHWAY  
CALL SPEED=NEGOTIATE  
ANSWER=C  
ORIGINATE=C  
DISCONECT=C  
ALERTING=I  
DCD/I=DELAY  
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TerminalAdapters  
DVST InstallationGuide  
8.4  
ASCOM 5000 / CITAM  
ATMODE  
Cables required - 2x 15 to 15 (Part No. AS-DVST-X21). Dip switch settings can be used  
and should be set as follows:  
Note:  
Switch 3 selects the sub address, if used.  
Fig 5: ASCOM internal dip switch settings (ATMODE)  
Step Instruction  
Remarks  
1
2
3
4
Using the pull handle, remove the  
circuit board module from the Citam  
5000  
Adjust the dip switches as shown in  
Figure 9  
The Citam will now perform a self test.  
On completion the display will read  
ISDN.  
Press the select key four times so  
that the legend ‘CONF’ appears on  
the display.  
Press the enter key once and it will  
say ‘PRT1’, press the select key  
twice it will say ‘TA’, press the enter  
key it will say ‘SHOW’.  
5
6
Press and hold select until the  
display reads ‘CHNG’, remove your  
finger from the select key and press  
the enter key, ‘INDB’ will be  
displayed.  
Press the enter key, the message will  
be ‘ON’, use the select key to turn  
this to ‘OFF’, then press the enter  
key.  
7
8
Hold the select key and press the This has turned of the in-band test  
enter key, the display will return to feature of the unit.  
‘CONF’.  
At ‘CONF’ press the enter key, the  
display will read ‘PRT1’ for port 1.  
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Step Instruction  
TerminalAdapters  
Remarks  
9
Press the enter key, it will read  
‘SHOW’. Hold the select until this  
changes to ‘CHNG’, press the enter  
key , display will then show ‘DIPS’ for  
dip switch.  
10  
Press the enter key, it should read  
‘INAC’ for inactive, press the select  
key to change this to ‘ACTV’ for  
active, press the enter key to return to  
‘DIPS’.  
11  
12  
13  
Hold the select key down and press  
the enter key, this will return unit to  
‘CONF’.  
Press the enter key and the display  
will read ‘PRT1’, press the select key  
to change this to port 2.  
Press the enter key and ‘SHOW’ will  
appear, hold the select key for three  
seconds, the display will change to  
‘CHNG’.  
14  
15  
Press the enter key it will change to  
‘DIPS’, press the enter key and it will  
say ‘INAC’, press the select key and  
‘ACTV’ will be displayed, press the  
enter key and display will return to  
‘DIPS’.  
Hold the select key and press the The unit has now had the dip switches  
enter key, returning the display to made active on both ports 1 and 2.  
‘CONF’.  
SEND CONFIGURATION STRING  
16  
At the command prompt CMD> type  
ISDN=ATMODE <RET>  
DUALISDN=ON <RET>  
ISDNSTR = CITAM <RET>  
At the command prompt CMD> type  
SEND <RET>  
Wait for the information to be sent to  
the modem. At the command prompt  
CMD> type  
ISDN0 <RET>  
AT<RET>  
AT&W<RET>,  
<ESC>  
ISDN1<RET  
AT<RET>  
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TerminalAdapters  
DVST InstallationGuide  
These commands are entered using  
Setup Mode on the DVST0200 unit via  
a PC. Refer to Chapter para  
AT&W<RET>  
<ESC>  
QUIT <RET>  
The Citam is configured to operate on DVST.  
X21  
Cables required - 2x15 to 15 (Part No. AS-DVST-X21)  
Fig 6: ASCOM internal dip switch settings (X21)  
Dip switch settings can be used and should be set as follows:  
Switch 3 selects the sub address, if used  
Note:  
Step Instruction  
Remarks  
1
Using the pull handle, remove the  
circuit board module from the Citam  
500  
2
Adjust the dip switches as shown in The Citam will nowperform a self test  
Figure 10  
On completion the dispaly will read  
ISDN  
3
4
Press the select key four times so  
that the legend ‘CONF’ appears on  
the display  
Press the enter key once and it will  
say ‘PRT1’, press the select key  
twice it will say ‘TA’, press the enter  
key it will say ‘SHOW’  
5
Press the hold select until the display  
reads ‘CHNG’ remove your finger  
from the select key and press the  
enter key, ‘INDB’ will be displayed  
Press theenter key, themessage will  
be ‘ON’,use the select key to turn this  
to ‘OFF’, then press the enter key  
Hold the select key and press the This has turned off the in-band test  
enter key, the display will return to feature of the unit  
‘CONF’  
6
7
8
At ‘CONF’ press the enter key, the  
display will read ‘PRT1’ for port 1  
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DVST InstallationGuide  
Cont.  
TerminalAdapters  
Step Instruction  
Remarks  
9
Press the enter key, it will read  
‘SHOW’. Hold the select until this  
changes to ‘CHNG’, press the enter  
key, display will then show ‘DIPS’ for  
dip switch  
10  
Press the enter key,it should read  
‘INAC’ for inactive, press the select  
key to change this to ‘ACTV’ for  
active, press the enter key to return to  
‘DIPS’  
11  
12  
13  
Hold the select key down and press  
the enter key, this will return unit to  
‘CONF’  
Press the enter key and the display  
will read ‘PRT1’, press the select key  
to change this to port 2  
Press the enter key and ‘SHOW’ will  
appear, hold the select key for three  
seconds, the display will change to  
‘CHNG’  
14  
15  
Press the enter key it will change to  
‘DIPS’, press the enter key and it will  
say ‘INAC’, press the select key and  
‘ACTV’ will be displayed, press the  
enter key and display will return to  
‘DIPS’  
Hold the select key and press the The unit has now had the dip switches  
enter key,returning the dispaly to made active on both ports 1 and 2  
‘CONF’  
The Citam is configured to operate on DVST.  
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TerminalAdapters  
DVST InstallationGuide  
8.5  
Dataflex TA  
The Dataflex terminal adaptor  
Cable 2 x 15 to 15 way (X21 Cable Assembly refer to page )  
When connected to or supplied with a Dataflex Terminal Adaptor the DFT0150will  
automatically configure itself for this type of operation. Ensure all terminal adaptor  
conections are made BEFORE power up, on power up the DFT0150 will send its  
configuration string to the terminal adaptor. The following is provided for information  
only.  
These commands are entered using Setup Mode on the DVST0150 unit.  
SEND CONFIGURATION STRING  
1
At the command prompt CMD> type  
ISDN=ATMODE <RET>  
At the command prompt CMD> type  
ISDNSTR =DATAFLEX <RET>  
Wait for the information to be sent to  
the modem.  
At the command prompt CMD> type  
DUALISDN=ON <RET>  
SEND <RET>  
ISDN0 <RET>  
AT <RET>  
AT&W <RET>  
<ESC>  
ISDN1 <RET>  
AT <RET>  
AT&W <RET>  
<ESC>  
At the command prompt CMD> type  
QUIT <RET>  
The Dataflex TA is now configured for use with the DVST0150.  
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DVST InstallationGuide  
Leased Line Transmission  
9
Leased Line Transmission  
Leased line transmission is generally used when a dedicated or private line is available  
to connect the transmit and receive units.  
There are many different types of leased line, 2 wire and 4 wire, with many variants  
depending on what is offered by the PTT companies.  
Most conventional Modems can operate on leased lines although the cables will differ  
from those used on a standard telephone connection.  
Baseband Modems offer faster transmission rates over standard Modems and an  
example using one of these is given at the end of this chapter.  
9.1  
9.2  
Leased line terminology  
In leased line terms the receiver or calling unit is set as ORIGINATE.  
The transmit unit is set to ANSWER.  
DVST set up for leased line operation  
When leased line operation is selected, the type of transmission selected (via the X21 or  
the V24 port) is determined by the dial type set in telephone number 0.  
If telephone number 0 is set to MODEM, the V24 or Modem port will be used. If either  
ISDN 0 or 1 is specified, X21 ports 0 or 1 will be used.  
LEASED=  
Leased line operation, options are:  
(default, OFF)  
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Leased Line Transmission  
DVST InstallationGuide  
ORIGINATE  
The Receiver unit is set to originate.  
ANSWER  
The Transmitter unit is set to answer.  
OFF  
This disables the leased line feature.  
9.3  
Leased line operation  
When leased line operation has been set up, the DVST will attempt to communicate with  
a remote site when clocks are received. This does not require hardwarehandshaking.  
If the line is broken for any reason, the units will attempt to reconnect and when  
commuunicationis restored will automaticallyestablish video transmissionof images.  
The units can be disconnected (taken off line) by pressing the LINE key. Pressing the  
LINE key again will establish image transmission.  
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Leased Line Transmission  
9.4  
ASCOM 64000 Baseband Modem  
The am-64000 is a good alternative to using a conventional PSTN MODEM in leased  
line mode.it also has a greater data transfer rate for short or private wire connections,  
the speed is 64kbps for the AM-64000 and 128kbps for the AM-128000, the max  
distance between the two units is 14 kilometres on a 0.64 mm cable or a -50 db loss.  
Set Both Dvst Units In The Direct Mode  
Using the cursor keys on the front of the ASCOM unit set the system up as follows.  
SET UP TX OR MASTER END  
RATE MENU64K  
OPTION MENUX21  
CONFIGURATION MENUMASTER MODE  
HIGH RATE  
X21 LOOPS OFF  
BIT SYNC  
64K MODE OFF  
POWER 0 dBm  
MENU UNLOCKED  
SET UP RX OR SLAVE END  
OPTION MENUX21  
CONFIGURATION MENUSLAVE MODE  
HIGH RATE  
X21 LOOPS OFF  
POWER 0 dBm  
MENU UNLOCKED  
Connect both units to the line and confirm that the status menu reads C=off and I=on.  
This confirms the units are in communication.  
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Leased Line Transmission  
DVST InstallationGuide  
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DVST InstallationGuide  
Calls  
10  
Calls  
10.1  
Passwords  
Passwords can be set and used by the system. When a PASSWORD is set it provides  
protection for the system at two points:  
1) Whenever a remote system calls it must send the correct password, otherwise  
no connection will be established.  
2) Whenever the SETUP key is pressed, the password will be requested before  
the setup mode is entered.  
Method:  
Enter SETUP mode is by pressing the SETUP key on either keyboard.  
If a password has been set the screen will go blank and the prompt PASSWORD  
will appear on the screen. At this point a valid password must be entered followed  
by pressing the <ENTER> key. If this entered correctly the prompt CMD will  
appear on screen.  
PASSWORD= Set system password to ...  
The system password can be up to 10 alpha numeric, case sensitive,  
characters. Once this has been set only calling units that have the  
associated password linked to the telephone number can access the  
system.  
PASSn=  
Set telephone entry n password to ...  
Range is 0 to 19  
This is linked to the designated telephone number and is the keyword  
that will unlock the remote system that is being called. It may be up to  
10 alpha characters in length.  
Format: PASS4=BERLIN  
In the above case the system called would have the password set to  
BERLIN. Only then could the system be accessed.  
Default: None set  
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Calls  
DVST InstallationGuide  
SPASSWORD= Set SETUP password to ...  
This feature allows an additional password to be allocated just to  
provide security for the set up mode. This can be used to prevent a  
remote user accessing the system and altering the settings.  
Default: None set  
Note:  
To maintain security, passwords cannot be read back from the system. Care should be  
taken to ensure passwords are not lost as this will require a new EEPROM chip to be  
fitted to the DVST.  
10.2  
On Screen Titling  
SYSTEM=  
Set system ID string to ...  
This is a 30 character title which appears on the front screen of the  
DVST. When a transmitter sends to a receiver this title is transferred  
from the transmitter and appears on the baseline of the receiving  
monitor.  
TIME=  
Set current time in HHMM format  
The time is based on the 24 hour clock. 4 digits must be entered.  
DATE=  
Set current date in DDMMYY format  
Date is always set as a six figure format.  
Two optional messages are superimposed on camera images sent from the transmitter.  
The first is the camera title and the second is the time and date.  
TLPOS=  
Set camera title position  
(default, 1)  
When the images are transmitted the camera title appears at the top of  
the screen. This setting adjusts the height of the camera title.  
TDPOS=  
Set clock screen position  
(default, 11)  
When the images are transmitted the time & date appears at the  
bottom of the screen. This setting adjusts the height of the time & date  
information.  
Note:  
The range available for both TLPOS and TDPOS is from 1 to 11, 1 is at the top of the  
screen and 11 at the bottom. Settings for TLPOS and TDPOS should be 2 numbers  
apart to avoid overlap. Setting either value to 0 removes the text from the screen.  
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Calls  
10.3  
Telephone Number Entries / Connection Commands  
TELn=  
Set telephone entry n to ...  
(default, blank)  
Twenty telephone numbers can be stored in memory.  
Format: TEL2=01044617944965  
If the MODEM or ISDN Terminal Adapter is to work in the DIRECT  
mode, the entry can be left blank.  
Telephone number 0 is the default number dialled when alarms are  
used to initiate a call to another system. The fall back number if this is  
engaged is always stored in telephone number 1.  
Where a number is used with dual ISDN dialling it is automatically linked with that  
number plus 10. Therefore Tel number 4 & 14 would be dialled if dual ISDN was  
selected for that telephone number.  
TELn  
Set telephone entry n as current  
This selects the number that will be dialled initially if the up/down keys  
are not used to select another.  
Format: TEL2  
TYPEn=  
Set telephone entry type to dial via ISDN0, ISDN1,  
ISDNx2 (dual), or MODEM  
(default, ISDN0)  
Each of the telephone numbers can be linked to either a PSTN  
MODEM or an ISDN terminal adapter.  
This command determines which of the external ports (MODEM, ISDN  
Port0, or ISDN Port1) will be used when a particular telephone number  
is selected.  
Format:  
TYPE0=ISDN0  
TYPE1=ISDN1  
TYPE2=ISDN2  
TYPE3=MODEM  
TYPE4=MODEM2  
Example: TYPE5=2  
Sets Telephone entry 5 to ISDN2  
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Calls  
DVST InstallationGuide  
TIMER=  
Call connection timeout period  
(default, 60 seconds)  
This is the period of time that the DVST will wait while trying to connect  
a call. This will vary depending on the type of call (ISDN or PSTN) and  
as there may be a delay in establishing International calls, the timer  
value should be increased.  
DIALCLR=  
...Sets time dial menu remains on screen  
(default, 30 seconds)  
10.4  
Callback  
This feature allows an operator to dial a remote unit and then have that unit  
automatically call the operator back. This can be a useful security feature. The operation  
of callback is as follows:  
Local unit calls remote unit.  
Call connects.  
Local unit passes the dial menu number (0 to 9) that the remote unit will call back.  
Call disconnects.  
The local unit waits for a return call.  
Remote unit waits for ten seconds then calls local unit.  
Local unit answers and contact proceeds as normal.  
CALLBACK=  
Set call back ON or OFF  
(Default, off)  
When the callback feature is switched on the option appears on the  
dialling menu to make either a normal call or a remote callback call.  
Normal call is the default and this is highlighted. By using the left and  
right arrow keys remote callback can be selected and deselected.  
Note:  
Callback must be enabled on BOTH the transmit and receiving units  
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Images and Transmission  
11  
Images and Transmission  
Screen display - Periscope mode  
CAMLO=Sets low resolution cameo operation:  
Options are:  
QUADHIHigh resolution quad size image  
QUADLOLow resolution quad size image  
CAMHISixteenth screen size high resolution  
Default:  
QUADLO  
11.1  
Image size  
Target image size =  
In the different screen modes of DVST each image is compressed to a target size and  
then transmitted.  
SIZEFHI=Set target size (K):FULL HI RES  
SIZEFLO=FULL LO RES  
SIZEQHI=QUAD HI RES  
SIZEQLO=QUAD LO RES  
SIZEMULT=MULTISCREEN  
DUALFHI=As above but for dual isdn operation  
DUALFLO=  
DUALQHI=  
DUALQLO=  
DUALMULT=  
Target Picture Sizes :  
SIZEFHI =20000(20000 Maximum)  
SIZEFLO =12000(12000)  
SIZEQHI =8000( 8000)  
SIZEQLO =4500( 4500)  
SIZEMULT=2500( 2500)  
DUALFHI =20000(20000)  
DUALFLO =14000(14000)  
DUALQHI =8000( 8000)  
DUALQLO =4500( 4500)  
DUALMULT=2500( 2500)  
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Images and Transmission  
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DVST InstallationGuide  
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Alarms & Events  
12  
Alarms & Events  
12.1  
Purpose & intended use  
Alarm devices connected to DVST transmission products are intended to allow  
verification and response to remote events.  
12.2  
Alarm Connections  
Alarm connections are made via a 37 pin D type male connector which plugs into the  
side panel of the DFT0150.  
WARNING: The alarm outputs are light duty reed relay types and should not be used for switching  
heavy loads.  
12.3  
ALARM Settings  
ASYS=  
Set alarm system ON or OFF  
(default, OFF)  
The alarm system is dormant until activated by the ASYS=ON  
command.  
When an alarm condition is detected the DVST transmitter dials stored  
number TEL0 from the dial menu. If a connection cannot be made to  
this number the unit dials stored number TEL1 from the dial menu. The  
transmitter will continue calling until a connection is made and the  
alarm is acknowledged from the receiver.  
AON=n  
AOFF=n  
Enable alarm contact n  
Disable alarm contact n  
(default, all alarm contacts enabled)  
By default all contacts are ON, or able to respond to contact closures  
on the alarm input.  
Alarm inputs that are not used should be set to off.  
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Alarms & Events  
DVST InstallationGuide  
Each input can respond to a contact closure or a contact opening, or  
respond to both.  
ANOnn  
ANCnn  
Set contact nn normally open  
Set contact nn normally closed  
Images transmitted on alarm  
The action taken on detection of an alarm is for the DVST unit to store a point of alarm  
image, dial the telephonenumber stored in dial menu number 0 and transmit the image.  
The resolution of alarm images, and the screen mode in which they  
are transmitted can be selected with the following command:  
ATYPEn=  
HI Selects a High resolution alarm image  
LO Selects a Low resolution alarm image  
The alarm settings are displayed in the view mode as follows, (type  
VIEW <ENTER>and press a key until the following display appears)  
Alarm Number  
Input  
Status  
Type  
Contacts  
01: ALARM  
02: ALARM  
03: ALARM  
04: ALARM  
05: ALARM  
06: ALARM  
07: ALARM  
08: ALARM  
09: ALARM  
10: ALARM  
11: ALARM  
12: ALARM  
13: ALARM  
14: ALARM  
15: ALARM  
16: ALARM  
01  
02  
03  
04  
05  
06  
07  
08  
09  
10  
11  
12  
13  
14  
15  
16  
On  
On  
On  
On  
Off  
Off  
On  
On  
On  
On  
On  
On  
On  
On  
On  
On  
FULLHI  
FULLLO  
FULLHI  
FULLLO  
N/O  
N/O  
N/C  
N/C  
FULLHI  
FULLLO  
FULLHI  
FULLLO  
FULLHI  
FULLLO  
FULLHI  
FULLLO  
FULLHI  
FULLLO  
N/O  
N/O  
N/O  
N/O  
N/O  
N/O  
N/O  
N/O  
N/O  
N/O  
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Alarms & Events  
AOUT=  
Set alarm outputs AUTO / MANUAL  
(default is AUTO)  
The two alarm contacts can be configured for automatic or manual  
operation.  
AUTO  
In automatic mode relay 1 acts as a line indicator and closes whenever  
the DVST is on line.  
MANUAL  
In manual mode the AUX1 key on the local unit controls relay 1 on the  
remote unit, this works as a momentary contact. AUX2 on the local unit  
controls relay 2, which works as a toggle on / off (latching) control.  
ALMODE=  
...Set Alarm operation mode  
NOFRZ/OLNFRZ/ FRZALL/TRKLST  
(default, OLNFRZ)  
NOFRZ  
No freeze mode - No frozen images are sent. If several alarms ocour  
to trigger the machine to dial, one shot from each will be sent in quick  
succession without any operator control. Any alarms present whilst on  
line will be indicated on the receive unit display baseline.  
OLNFRZ  
Offline alarm freeze - Only freezes the first alarm image and then  
transmits this image to the receiver. Subsequent alarms incoming  
while the uniit is transmitting to a receiver are flagged on the baseline  
but are not frozen, nor do they need to be acknowledged.  
FRZALL  
Freeze all alarm images - All alarm images are frozen. All must be  
acknowledged by the receiving station before the alarm can be  
cleared.  
TRKLST  
Track last alarm - No frozen images are sent. If several alarms ocour to  
trigger the machine to dial, one shot from each alarm will be sent in  
quick succession without any operator control, following an intruder.  
Any alarms present whilst on line will be displayed full screen and un  
frozen.  
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Alarms & Events  
DVST InstallationGuide  
ADIAL=n  
Set number of telephone entries to use in alarm  
condition 1 / 2 /3 / 4  
(default, 2)  
By default DVST transmitter dials stored number TEL0, if a connection  
cannot be made to this number the unit dials stored number TEL1 on  
the menu. With ADIAL=3 the DVST transmitter dials the stored  
numbers TEL0, TEL1, TEL2 until a line answers.  
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DVST InstallationGuide  
Audio  
13  
Audio  
The Digital Audio Interface ( DAL100 ) is a sound unit for the DVST range of products  
working on an intercom basis i.e. push-to-talk. Microphone and speaker connections  
are provided together with volume control and indicators for power, transmit, receive  
and line error.  
Fig: 7 End Panel Layouts  
13.1  
Equipment required but not supplied  
The following lists equipment you will need to complete your installation of the DAL100  
audio unit.  
Microphone with automatic gain control and complete with push-to-  
q
talk switch and 3.5mm jack connector.  
Speaker capable of handling a 2W into 8 Ohm input.  
q
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Audio  
DVST InstallationGuide  
13.2  
Connecting the DAL100  
Microphone ( refer to fig. 7 )  
Connect the 3.5mm jack plug of the microphone into socket on end panel. Connect the  
microphone press-to-talk lead to pins 1 and 9 of a 15way male connector and plug into  
socket on end panel,  
Fig: 8 Microphone connection  
Speaker ( refer to fig. 8 )  
Connect the 3.5mm jack plug of the speaker to the SPEAKER OUT socket.  
Power Supply ( refer to fig. 8 )  
Connect the power supply to the socket marked PWR on the end panel.  
DVST Connection ( refer to fig. 8 )  
Using the 9 way to 9 way cable connect the DAL100 unit to port AUX1 on the DVST.  
(Details are in the cable section of this manual)  
Set Port Usage ( refer to SETUP para 5.7 )  
Port Aux1 on the DFT0150 sould set to the following:  
PORT = AUX1 38400 N 8 1 PKT  
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DVTS InstallationGuide  
Cable Assemblies  
14  
Cable Assemblies  
The following pages detail cable assemblies with connectors for use with Dedicated  
Micros rang of DVST transmitters and transceivers. The cables are fully screened for  
EMC compatibility.  
For prices and availability please contact our Sales Departments at the addresses  
below.  
Northern UK Sales  
Dedicated Micros Ltd  
Pendlebury Industrial Estate, Bridge St, Manchester, M27 1FJ,  
United Kingdom  
Tel: 0161-794-4965 Fax: 0161-728-4142  
Outside UK : Int +(44) 161-794-4965 Fax: Int +(44) 161-728-4142  
Southern UK Sales  
Dedicated Micros Ltd  
3 Cannon Court, Warren Farm, Stratford Road,  
Wolverton Mill, Milton Keynes MK12 5NS  
Tel: 0908-225199 Fax: 0908-225197  
In the United States  
Dedicated Micros Inc.  
11515 Sunset Hills Road, Reston, Virginia 22090, U.S.A.  
Tel: Int +(1) 703-904-7738 Fax: Int +(1) 703-904-7743  
In Australasia & the Far East  
Dedicated Micros (Asia) PTE Ltd  
1557 Kepple Road, #02-03 Singapore 0208  
Tel: +(65) 227-3923/27 Fax: +(65) 227-4869  
Dedicated Micros (Australia) PTY  
1, Tannery Road, #05-04/05 Cencon I, Singapore 1334,  
Tel: Int +(65)-741-0138 Fax: Int +(65)-741-7743  
In France, Germany & Benelux  
Dedicated Micros (Belgium) Ltd  
Interleuvenlaan 64, B-3001 Leuven, Belgium  
Tel: Int +(32)-16-40-1228 Fax: Int +(32)-16-40-0243  
Dedicated Micros Ltd  
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Cable Assemblies  
DVTS InstallationGuide  
14.1  
X21 to V35 Cable Assembly  
Page 56  
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DVTS InstallationGuide  
Cable Assemblies  
14.2  
X21 Cable Assembly  
Dedicated Micros Ltd  
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Cable Assemblies  
DVTS InstallationGuide  
14.3  
V24 Sync Modem Cable Assembly  
Page 58  
Dedicated Micros Ltd  
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DVTS InstallationGuide  
Cable Assemblies  
14.4  
RS232 Cable Assembly (DVST-PC)  
Dedicated Micros Ltd  
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Cable Assemblies  
DVTS InstallationGuide  
14.5  
RS232 Cable Assembly (DVST-DAL)  
Page 60  
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DVST InstallationGuide  
Glossary  
15  
Glossary  
DVST  
ISDN  
Digital Video Storage and Transmission  
Integrated Services Digital Network - A digital telephone system capable of  
transmitting data, speech, images and text.  
PSTN  
Public Subscriber Trunk Network - The standard telephone system used for  
speech and fax communication.  
Speed of Update  
The time taken to refresh a single picture.  
Software  
Video data compression achieved by computer program processing.  
Compression  
Hardware  
Video data compression taking place in specialised purpose built microchips.  
Compression  
k bytes  
Measurement expressing the size of digital computer memory  
k bits per  
second  
Measurement expressing the speed at which data can be transmitted.  
Compression  
Taking standard video signals and reducing these into compact digital data.  
Decompression  
Taking digitally compressed DVST information and restoring this to normal  
video images.  
Complete  
compression  
Each time the picture is transmitted, or stored to memory, the entire picture is  
compressed.  
Conditional  
Updating  
Update only the parts of the picture that have changed. The first time the  
picture is transmitted the entire picture is compressed. Thereafter only the  
parts of the picture that change are transmitted.  
DAT  
Digital Audio Tape, the new technology for recording digital information on a  
special tape cassette. Massive storage can be achieved in a very small  
package.  
MODEM  
MOdulator/DEModulator used to connect the DVST unit to a standard  
telephone line.  
Terminal  
Adapter  
Used to connect the DVST to an ISDN digital telephone line.  
Dedicated Micros Ltd.  
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Glossary  
DVST InstallationGuide  
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DVST InstallationGuide  
Returns Procedure  
16  
Returns Procedure  
In the Event of Difficulty  
In the event of a fault, first approach your dealer or distributor. Dedicated Micros  
operates a Technical Support Group where most technical problems can be solved over  
the telephone. The addresses of Dedicated Micros are listed on the front page of this  
manual.  
If, for what ever reason, this is not possible, the unit can be returned directly to a  
Dedicated Micros Repairs Department. In this event please follow the returns procedure  
as detailed below to avoid delay.  
Photocopy the EQUIPMENT RETURN ADVICE. Contact the Customer Services  
Department to obtain a returns number.  
The following information must be available to give to the Customer Services  
Department when requesting a returns number.  
Model type  
q
Serial number  
q
Full Account/Invoice address or Return Address if different  
q
Contact name  
q
Fax number and Telephone number  
q
Customer order number - for repair cost not exceeding £100  
q
Full description of the fault  
q
Previous returns number(s) (if applicable)  
q
If the unit is rack mounted, the rack mount kit must be removed before the unit is packed.  
Wrap the unit in the original polythene bag. Fit preformed end pieces at either side of the  
unit.  
If the unit is not returned in it’s original packing, Dedicated Micros Repair Department  
will automatically re-box the unit, and there will be a charge of £11.75 inc VAT.  
Mark the return number, obtained from the Customer Services Department, clearly on  
the outside of the box. Return the unit to the address on the front page of this manual, a  
completed copy of the EQUIPMENT RETURN ADVICE must be sent with the unit.  
If the unit crosses a national boarder, enter Airway Bill number on the copy of the  
EQUIPMENT RETURN ADVICE and fax Dedicated Micros for the attention of the  
Despatch Department. This will avoid any delays in returning the unit after it has been  
repaired.  
Dedicated Micros Ltd  
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Returns Procedure  
Notes:  
DVST InstallationGuide  
Dedicated Micros tries to maintain a fast turnaround procedure for repairing equipment,  
incomplete or inaccurate documentation may result in delay.  
If the unit is not under warranty a charge will be made for the repair.  
If the unit has it’s warranty void, due to misuse or damage, the Repairs Department will  
contact the account customer to advise cost.  
Upon examination of the unit if the repair cost is likely to exceed £100, the Repairs  
Department will contact the account customer for authorisation before work is  
undertaken.  
Repairs not exceeding £100 will automatically be carried out and invoiced on the official  
order number stated by the account customeron the EQUIPMENTRETURNADVICE.  
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DVST InstallationGuide  
Returns Procedure  
Dedicated Micros Ltd  
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Returns Procedure  
DVST InstallationGuide  
Page 66  
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