Interlogix KTD-312-R User Manual

KTD-312
Computer Interface/Data-merger

© 2003 GE Interlogix, Video Systems Group

All Rights Reserved.

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Interlogix, Video Systems Group.

The information contained in this document is
subject to change without notice. GE
Interlogix, Video Systems Group, in keeping
pace with technological advances, is a
company of product innovation. Therefore, it is
difficult to ensure that all information provided
is entirely accurate and up-to-date. GE
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responsibility for inaccuracies or omissi ons
and specifically disclaims any liabilit ies,
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incurred as a consequence, directly or
indirectly, of the use or application of any of
the contents of this document.

For the latest product specifications, visit GE
Interlogix, Video Systems Group, online at
www.ge-interlogix.com or contact your Video
Systems Group sales representative.

For technical support before and after
installation, call 800-469-1676.

Technical support is available 24 hours a day, 7 days
a week.

Call: Tech Support 800-469-1676 (6

A.M. – 5 P.M. PST Monday through Friday)
Tech Support 541-740-3589 (all other times)
Main 800-343-3358 or 541-754-9133
Fax: Tech Support 541-752-9096 (avail abl e 24 hours a day)
Main 541-754-7162
Web: www.ge-interlogix.com

Item number 1040057A / October 2003

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 interference
when the equipment is operated in a
commercial environment. 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.

You are cautioned that any changes or
modifications not expressly approved
by the party responsible for compliance
could void the user's authority to
operate the equipment.

KTD-312 Installation Manual

BEFORE YOU BEGIN

Read these instructions before installing or operating this product.

Note: This installation should be made by a qualified service person and should conform to
local codes.

This manual provides installation and operation information. To use this
document, you must have the following minimum qualifications:

• A basic knowledge of CCTV systems and components

• A basic knowledge of electrical wiring and low-voltage electrical

hookups

Use this product only for the purpose for which it was designed.

Customer Support

For assistance in installing, operating, maintaining, and troubleshooting
this product, refer to this document and any other documentation
provided. If you still have questions, contact Technical Support:

GE Interlogix, Video Systems Group
Call: 800-469-1676

Fax: [phone]

Note: You should be at the equipment, ready with details before calling Technical Support.

Conventions Used in this Manual
Boldface or button icons highlight command entries. The following

WARNING, CAUTION, and Note statements identify potential hazards:

* WARNING:

Improper use of this equipment can cause severe bodily injury or
equipment damage.

** CAUTION:

Improper use of this equipment can cause equipment damage.

Note: Notes contain important information about a product or procedure.
* This symbol indicates electrical warnings and cautions.

** This symbol indicates general warnings and cautions.

1040057A / October 2003 3

KTD-312 Installation Manual

INTRODUCTION

The KTD-312 Interface Unit provides a communication link between the
Digiplex
computer to have control of the system. The KTD-312 can also function
as a Digiplex “data merger” for combining Digiplex control signals from
two sources. The KTD-312 cannot function simultaneously as a data
merger and a computer interface. The following describes the interface
protocol and how the KTD-312 is installed in the Digiplex system. Refer
to the ASCII Protocol Document for control protocol information.



CCTV control system and an external computer, enabling the

COMPUTER INTERFACE

The computer interface is standard RS232. Five of the RS232 lines are
used: TX, RX, COMMON, RTS, & CTS. RTS is not currently recognized.
CTS is normally asserted but is turned off for a short interval at the end
of each command string. If the internal buffer of the KTD-312 is full, CTS
will remain off until space is available.

The serial format is 8 bit data with no parity. The most significant bit is
always 0. This is equivalent to 7 bit data with parity always 0.

DATA MERGER

NORMAL MERGE

Merge permits two incoming Digiplex control data streams to form a
single data-stream output that contains the control information from both
inputs (subject to some restrictions).

The merge input does not pass time/date functions (as from a KTS-253)
or alarm functions (as from a KTD-463). It also does not pass
programming information (from KTD-404s to KTD-405s or KTD-463s).
Thus, the merge input is best suited for serial from other controllers
(such as KTD-404s or KTD-405 s which do not have KTS-253 or KTD­463 “upstream”) in normal control operation. In addition, if the merge
input receives more data than the unit is capable of moving to the output
stream, that data is discarded.

MERGE WITH COMPUTER REPORTING

When configured to operate as a merger, the received data is still
available as an output to a computer. This output operates at the same
baud rate as the merge input.

4 1040057A / October 2003