Kaval LINKnet OFR400-C1, LINKnet OFR400-A1, LINKnet OFR400-A2, LINKnet OFR400-B1, LINKnet OFR400-C2 User Manual

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LINKLINK

OFR400 RF MODULES

OFR400 RF MODULES

OFR400 RF MODULESOFR400 RF MODULES

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netnet

™™™™

USER MANUAL

USER MANUAL

USER MANUALUSER MANUAL

INSTALLATION, OPERATION

INSTALLATION, OPERATION

INSTALLATION, OPERATION INSTALLATION, OPERATION

AND MAINTENANCE

AND MAINTENANCE

AND MAINTENANCEAND MAINTENANCE

KAVAL TELECOM INC.

Telephone: (888) 86-KAVAL

Web: www.kaval.com

E-mail: [e-mail]

Document #DCM000000019, Rev.0

60 Gough Road

Markham, Ontario

L3R 8X7

LINKnet™ OFR400 RF MODULES ! USER MANUAL

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© 2000 KAVAL TELECOM INC. All rights reserved.

No part of this publication, or any software included with it may be reproduced, stored in a retrieval system,
or transmitted in any form or by any means, including photocopying, electronic, mechanical, recording or
otherwise, without the prior written permission of the copyright holder.

This document contains proprietary information of KAVAL TELECOM INC. The contents are confidential and
any disclosure to persons other than the officers, employees, agents or subcontractors of the owner or
licensee of this document, without the prior written consent of KAVAL TELECOM INC., is strictly prohibited.

KAVAL TELECOM INC. provides this document as is, without any warranty of any kind either expressed or
implied including, but not limited to, the implied warranties of merchantability and fitness of a particular
purpose. KAVAL TELECOM INC. may make changes or improvements in the equipment, software, or
specifications described in this document at any time and without notice. These changes will be incorporated
in new releases of this document.

This document may contain technical inaccuracies or typographical errors. KAVAL TELECOM INC. waives
responsibility for any labour, materials, or costs incurred by any person or party as a result of using this
document. KAVAL TELECOM INC., and any of its affiliates shall not be liable for any damages (including,
but not limited to, consequential, indirect or incidental, special damages or loss of profits or date) even if they
were foreseeable and KAVAL TELECOM INC. has been informed of their potential occurrence, arising out of
or in connection with this document or its use.

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Revision Date: 4/11/00:

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Rev. № Page № Description of Revision Date

0 All Original Release Apr.6,2000

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This manual makes reference to trademarks that are the property of other companies. References are used
only to refer to the products or services of the trademark owners.

net

LINK

™ is a trademark of KAVAL TELECOM INC.

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LINKnet™ OFR400 RF MODULES ! USER MANUAL

TABLE OF CONTENTS

TABLE OF CONTENTS

TABLE OF CONTENTSTABLE OF CONTENTS

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1.

OFR400 MODULES.................................. 4

VERVIEW

O

Theory Of Operation ......................................... 4

ODELS

M

LOCK DIAGRAM

B

OFR400 RF Module ......................................... 5

ODULE SPECIFICATIONS

M

PERATION

O

Software Set-up ................................................ 7

............................................................. 4

................................................................. 4

..................................................... 5

....................................... 6

............................................................ 7

Power On Self Test (POST) ............................. 8

Normal Operation ............................................. 9

OFR Drawing (Sides and Top) ....................... 10

NTENNA INSTALLATION

A

........................................ 11

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LINKnet™ OFR400 RF MODULES ! USER MANUAL

1. OFR400 MODULES

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Overview

Theory Of Operation

An OFR, or On Frequency Repeater, is a radio repeater that simultaneously
receives and transmits a single narrow band radio channel on exactly the same
frequency.

The OFR accomplishes its repeater function without store and forward circuitry, or
expensive conventional simulcasting techniques. The fact that the same frequency
is retransmitted by an OFR means that additional frequency allocations are not
required in situations where an existing radio coverage pattern needs to be
extended. The most common OFR applications are the extension of above ground
signals into buildings, tunnels, vehicles or the extension of radio coverage patterns
into outdoor shaded areas such as deep valleys.

From an applications standpoint, an OFR is very similar to a regular two-way radio
repeater. On Frequency Radio Repeaters can be combined using regular two-way
radio multicoupling or duplexing equipment and have input and output signal
characteristics to those of regular transmitters and receivers. The one special
consideration in OFR systems is that of input to output antenna isolation. This must
be carefully engineered for each installation.

Standard On Frequency Radio Repeaters are designed for indoor use only and are
intended for mounting in a standard EIA 19 inch rack. Modular design of OFR
circuitry allows for easy servicing, stocking of spares, adaptability and upgrade
ability.

Models

OFR400 MODULE FAMILY

MODEL TYPE FREQUENCY

OFR400-A1 25 KHz Channels 403-430 MHz (FM)

OFR400-A2 12.5 KHz Channels 403-430 MHz (FM)

OFR400-B1 25 KHz Channels 430-450 MHz (FM)

OFR400-B2 12.5 KHz Channels 430-450 MHz (FM)

OFR400-C1 25 KHz Channels 440-470 MHz (FM)

OFR400-C2 12.5 KHz Channels 440-470 MHz (FM)

OFR400-D1 25 KHz Channels 470-490 MHz (FM)

OFR400-D2 12.5 KHz Channels 470-490 MHz (FM)

OFR400-E1 25 KHz Channels 490-512 MHz (FM)

OFR400-E2 12.5 KHz Channels 490-512 MHz (FM)

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Block diagram

RF Output
403- 512 M H z

Blind-Mate
to SMA R F
Connector

UMC Controller Board

Power &
Control to
Backplane

RF Input
403- 512 M H z

OFR400 RF Module

Tr ans mit Bo ard

Power
Circuits

Com mu nicati on
Interfaces

Receive Board

Gain Control

Buffers, Filters, and
Linear Power Am pli fier

Gain
Control

Micro­Controller
wi th li nes to
all Boards

Low Noise
Pre-Amplifier Buffer

First Local
Oscillator

First Local
Oscillator

Test
Oscillator

Amplifiers

IF B oard

2'nd Local
Oscillator

2'nd Local
Oscillator

First IF
Filter

2' nd IF
Crystal
Filter

2' nd IF
Crystal
Filter

First IF
Filter

Blind-Mate
to SMA R F

Conn ector

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Module Specifications

SPECIFICATION

Frequency Bands 403-512 MHz in 5 Bands

Channel Spacing 25 or 12.5 KHz

Modulation Types Narrowband FM

RF Frequency Stability Tracks Input Signal Exactly

Adjacent Channel Selectivity 60 dB Minimum

Max. RF Output Power 37 dBm

RF Output Power Range

RF Output Power Variation vs. Input

(over -90 to -30 dBm)

Input Dynamic Range -110 to -30 dBm

Input Sensitivity Adjust Range -110 to -30 dBm

Input Hysteresis 1 to 10 dB

Transmit Duty Cycle Continuous

Transmit Spurious Output -13 dBm max

Receive Conducted Spurious Output -57 dBm Max

Power can be reduced 20 dB in 1 dB Steps (AGC

Controlled)

0 TO +1 dB

Maximum Gain 140 dB

Audio Distortion & Noise

(Narrowband FM)

<3% Increase

Transmit Key-Up Time < 2 mS

Transmit Key-Down Time < 1 mS

Group Delay <120 uS

Input / Output Connectors SMA Connectors on back of Card-Cage

Input / Output Impedance 50 Ohms

Module Power Supply Requirements +12V & +28V from Card-Cage Power Supply

Module Power Consumption 45 W Maximum

Connections to Card-cage

Front Panel Indicators

Edge Connector for Power and Data and Two

Blind-Mate RF Connectors

Operating, Stand by, Fault, Program Mode,

Receive, Transmit

DB-15 Connector on back of Card-Cage provides

Module Interconnections (via Card-Cage)

per-Module Fault Relay, Interconnect to other

Modules, & RS-232 connection to a PC.

RF Modules may be configured either via the

Configuration Options

optional Controller Module, or via a PC and an

RS-232 Connection via the Card-Cage.

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LINKnet™ OFR400 RF MODULES ! USER MANUAL

SPECIFICATION

Size 9.11” High, 2.00” Wide, 14.00” Deep

Weight 10 lbs, 4.5 kg Max

Operation

Software Set-up
The OFR400 module is shipped pre-configured with the following factory set options:

OPTION RANGE OF VALUES DEFAULT VALUE

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Frequency

Receive Threshold

Receive Hysteresis 1 to 10 dB 2.5 dB

Hang Time 0.0 to 5.0 Seconds 2.0 Seconds

Time Out

Module Enabled On / Off On

Transmit Power Level 20 to 37 dBm Order Specific

In line with the versatility of the LINKnet

403 – 512 MHz

(As per Model)

–110 to -50 dB -89 dB

0 to 600 Seconds

Or none

TM

Platform, it is possible to re-configure the

Order Specific

300 Seconds

OFR400 module in the field. For further information on the modification software
and the PC adapter, contact KAVAL TELECOM INC. by E-mail: [e-mail]

Default values may be changed when an order is placed. Check your order
confirmation (shipped with modules) for customized values.

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Power On Self Test (POST)

Each system module automatically performs a self-diagnostics when inserted into
the system Card-cage. These tests determine that the unit is a) correctly installed in
the Card-cage and b) not damaged in transit.

•

All six of the LED’s on the front panel will flash 3 times

•

If the LED’s do NOT flash three times, then remove the module, check the power

source, and re-insert the module, (See Installation Instructions).

•

If the card is “OK” the LED’s will continue normally. (See Normal Operation)

•

If there is a fault, then the Red Fault LED will remain on. If this occurs, contact

your KAVAL TELECOM INC. Service Representative, (See Warranty / RMA
Procedures).

The Power On Self Test is Not an RF test, it only verifies that there is power to
the unit and that the logical circuitry is functioning.

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Normal Operation

The OFR400 Module has six LED’s on the faceplate:

1. OPERATING - Under normal operating conditions, this LED will flash
GREEN when RF Data is present.

2. STAND BY – Under the control of the Controller Module, the OFR400
Module has the ability to act as a duplex transmitter, sitting perpetually in
Stand by Mode waiting for the primary transmitter to fail. This LED should be
constant Amber. If a Fault should occur with the primary module, the “Stand
by” unit will immediately become the primary unit, at which time the Stand
by LED will be turned off and the LED’s will show an operating Module.

3. Transmit – This Green LED will be on when a signal is being transmitted

4. Receive – This Green LED will be on when a signal is being received

5. Program – This LED will be constant Amber when the unit is being re­programmed by the Controller Module. This will signify that the unit is
powered on but unavailable for use.

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6. FAULT – Red LED, If the internal diagnostics for the module detect a
problem, then this LED will remain on

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OFR Drawing (Sides and Top)

OFR400 Module

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Antenna Installation

•

All Antenna Installation is to be performed by Qualified Technical Personnel only.

•

Antenna Installation Instructions and locations below are for the purpose of

satisfying FCC RF Exposure Compliance requirements.

•

Roof Top Antenna

The

for linking to the

Donor Site

is a directional (high gain)
Antenna fixed-mounted physically on the side or top of a building, or on a tower.
The Antenna Gain must be no more than 10 dB. The Roof Top Antenna location
should be such that only Qualified Technical Personnel can access it, and that
under normal operating conditions no other person can touch the Antenna, or
approach within 10 meters of the Antenna.

•

In-Building Antenna

The

connection is via a coaxial cable distribution system with
Signal Taps at various points connected to the fixed-mounted Indoor Antennae.
This is shown in the figure in the Introduction. The Indoor Antennae are simple
1/4 Wavelength (0 dB Gain) types. They are used with KAVAL TELECOM INC.
12, 16, or 20 dB Cable Taps. As such the maximum EIRP will be at the first
Tapped Antenna, which will be 12 dB below the maximum signal level of the
LINKnet™ (+37 dBm); +28 dBm, or 0.63 W atts EIRP. These Antennae are to be
installed such that no person can touch the Antenna, or approach within 0.2
Meters.

ANTENNA INSTALLATION

WARNING

ALL ANTENNA INSTALLATION IS TO BE PERFORMED BY QUALIFIED
TECHNICAL PERSONNEL ONLY.

ANTENNA INSTALLATION INSTRUCTIONS AND LOCATIONS ARE FOR
THE PURPOSE OF SATISFYING FCC RF EXPOSURE COMPLIANCE
REQUIREMENTS, AND ARE NOT OPTIONAL.

ALL ROOF TOP ANTENNA INSTALLATION MUST BE SUCH THAT NO
PERSON CAN TOUCH THE ANTENNA, OR APPROACH CLOSER THAN
10 METERS.

ALL IN-BUILDING ANTENNAE INSTALLATIONS MUST BE SUCH THAT
NO PERSON CAN TOUCH THE ANTENNAE, OR APPROACH CLOSER
THAN 0.2 METERS.

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