TECH MAN ACU vB

7/28/2019 TECH MAN ACU vB

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82336_TM_ACU_B Page 2

EC Declaration of Conformity available at: www.jotron.com

Abbreviations and definitions

ALARMMessage by which the unit signals the occurrence of an event. The alarm is indicated by an audible tone and/or amessage (or icon) on the display.

BAUDTransmission rate unit of measurement for binary coded data (bit per second).

BITShort form of Binary Digit. The smallest element of data in a binary-coded value.

BITEBuilt In Test Equipment

bps

Bits Per Second.

INTERFACEElectronic circuits that permit the passage of data between different types of devices.

I.ED

Light Emitting Diode.

RCUWith the Remote Control Unit, several radios (up to 64) can be combined on one site and interfaced to a personal

computer, using a special program (RACS).

RESET

To return stored values to either the default value or zero in memory.

SOFTWAREValues programmed and preloaded into memory. The values represent a permanent set of instructions forrunning the automatic functions (computations) of the unit.

UHFUltra High Frequency; A set of frequencies in the upper MHz region.

VHF

Very High Frequency; A set of frequencies in the lower MHz region.

VSWRVoltage Standing Wave Ratio
http://www.jotron.com/http://www.jotron.com/


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Amendment Record

AMENDMENTNO.

INCORP.BY

DATE PAGE(S) VERSION REASONFOR CHANGE

GYE/RK 11.10.04 1-20 A

2 ES 26.10.06 19 B Kontroll med manualer.doc

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The information in this book has been carefully checked and is believed to be accurate. However, no

responsibility is assumed for inaccuracies.JOTRON electronics a.s reserves the right to make changes without further notice to any products or

modules described herein to improve reliability, function or design. JOTRON electronic a.s does not

assume any liability arising out of the application or use of the described product.

SAFETY INSTRUCTIONS

CAUTION!

This equipment contains CMOS integrated circuits. Observe handling precautions to avoid static

discharges which may damage these devices.

WARNING!

Some RF semiconductor devices used in this equipment may contain Beryllium Oxide. If inhaled, dust

from this oxide can be toxic. No danger will arise from normal handling but no attempt should be

made to tamper with these devices. On no account must these transistors be destroyed or discarded

with industrial or domestic waste, but should be returned to the manufacturers for subsequent disposal.

1. Do not place liquid-filled containers on top of the equipment.

2. Immediately turn off the power if water or other liquid leaks into the equipment.Continued use of the equipment can cause fire or electrical shock.Contact Jotron Electronics a.s for service.

3. Immediately turn off the power if the equipment is emitting smoke or fire.

4. Do not operate the equipment with wet hands.


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LIST OF CONTENTS

1 GENERAL DESCRIPTION ...................................................... ............................................................... 1-1

1.1 SYSTEM............................................................ ................................................................ ..................... 1-1

2 TECHNICAL SPECIFICATION........................................................ ..................................................... 2-1

2.1 ANTENNA CHANGEOVERUNIT......................................................... ..................................................... 2-1

3 FUNCTIONAL DESCRIPTION ......................................................... ..................................................... 3-1

3.1 FRONT PANEL CONTROLS ..................................................... ................................................................ 3-1

3.2 REARCONNECTIONS ............................................................. ................................................................ 3-23.3 CONNECTORS.............................................................. ............................................................... ........... 3-33.3.1 DC power supply connector.......... ................................................................ ............................... 3-33.3.2 AC Power Connector............................................................................................... ..................... 3-33.3.3 Antenna Connectors ...................................................... ............................................................... 3-43.3.4 Remote Connector........................................................ ................................................................ 3-5

DIP SWITCHES .............................................................. ................................................................ ..................... 3-63.3.5 Dip Switches, Default Settings ........................................................... .......................................... 3-63.3.6 Dip Switches, Placing and Access...................................................... .......................................... 3-7

4 INSTALLATION ............................................................. ................................................................ .......... 4-1

4.1 INTRODUCTION ........................................................... ............................................................... ........... 4-14.2 POWERSUPPLY ........................................................... ............................................................... ........... 4-1

4.3 REMOTE INTERFACE.............................................................. ................................................................ 4-15 OPERATING INSTRUCTIONS......................................................... ..................................................... 5-1

5.1 INTRODUCTION ........................................................... ............................................................... ........... 5-1

6 TECHNICAL DESCRIPTION ACU ............................................................. .......................................... 6-1U

6.1 INTRODUCTION ........................................................... ............................................................... ........... 6-16.2 POWERBOARD............................................................ ............................................................... ........... 6-16.3 MAIN BOARD .............................................................. ............................................................... ........... 6-1

7 MAINTENANCE AND TROUBLESHOOTING............................................................... ..................... 7-1

7.1 ENVIRONMENTAL CHECK...................................................... ................................................................ 7-1

8 APPENDIX............................................................. ............................................................... ..................... 8-18.1 CONNECTION EXAMPLE ........................................................ ................................................................ 8-1


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82336_TM_ACU_B Page 1-1

1 GENERAL DESCRIPTION

1.1 System

The change over unit is basically a RF relay with control circuit, interface and internal power

supply.

The RF relay has three connectors, common, NC (main) and NO (stby).

The unit can be hot wired to the alarm outputs from the radios, or controlled from a remote

control unit.

For maximum flexibility the input signals are optocouplers that covers a large voltage range.

In addition the control logic can be inverted.

The unit has several outputs that can be used for monitoring the current status or controlling

external units.


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2 TECHNICAL SPECIFICATION

2.1 Antenna Changeover Unit

Antenna Changeover Unit

ENVIRONMENTAL

Temperature range -20C to +55C (operating) -40C to +70C (storage)

Humidity 90% @+40C (non condensing)

Shock Transport: IEC-721-3-2, Class 2M3

Vibration Transport: IEC-68-2-32, Class 2M3. IEC-68-2-6

GENERAL

Logic outputs Relay, dry contact that closes when active

Logic inputs Optocoupler, operating voltage: 5V to 48V

Supply voltage, DC 21.6 - 31.2VDC negative ground. Voltage below 27VDC will reduce output power.

Supply voltage, AC 115 to 230VAC 10%, 50 60 Hz

Power consumption


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3 FUNCTIONAL DESCRIPTION

3.1 Front Panel Controls

1

2

3

4

5

6

7

Figure 3.1 Antenna Changeover Unit

1. Alarm LED

Indicates an alarm on the main input.

2. Status LED, MainIndicates the state of the changeover relay (main).

3. Status LED, Stby

Indicates the state of the changeover relay (standby).

4. Alarm LED

Indicates an alarm on the standby input.

5. Mains ON/OFF

Turns the unit on or off.

6. AC LED

Indicates that the unit is operating from the AC power supply.

7. ON LED

Indicates that the unit is turned on.This LED will be lit if either the AC or the DC supply is operating.


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3.2 Rear Connections

1

2

3

4

5

6

7

Figure3.2 Rear view Antenna Changeover Unit

1. RF Main Connector

N-type, female connector (Normally Closed).

2. RF Antenna

N-type, female connector (Common).

3. RF Stby Connector

N-type, female connector (Normally Open).

4. DC Input Connector

5. GND Connector

6. Remote Control Connector

7. AC Input Connector


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3.3 Connectors

3.3.1 DC power supply connector

Figure 3.3.1 Power supply connector, male.

Pin name. Signal Function description

A DC Supply voltage (+21.6V to +31.2V)

B GND Common ground

Table 3.3.1 Functional description of the DC power supply connector.

3.3.2 AC Power Connector

Figure 3.3.2 Power supply connector, male.

Pin name. Signal Function description

A AC

C AC

The voltage should be between 230VAC 10% or 115VAC

10%

(Automatic switch between 230 and 115)

R GND Common ground

Table 3.3.2 Functional descriptions of the AC power supply connector.


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3.3.3 Antenna Connectors

Main

Ant

Stby

Figure 3.3.3 Antenna connectors, N female

Name. Signal Function description

MAIN RF IN/OUT RF input and output, to be connected to main unit (NC).ANT RF IN/OUT RF input and output, to be connected to antenna.

This is the common connector of the RF relay.

If the unit is configured to switch between main and stby antenna

this connector is to be connected to the RX/TX side

(radio or filter/combiner unit).

STBY RF IN/OUT RF input and output, to be connected to standby unit (NO).

Table 3.3.3 Functional description of the antenna connector.


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Dip Switches

Figure 3.4 Dip Switches Layout

Swnr.

ON OFF Function

1 Enabled Disabled Hot Main/Standby. Auto switch between main and standby.

2 Enabled Disabled Connection between com.(select relay) and pin 10(15 pin D-sub)

3 Enabled Disabled Connection between com.(select relay) and internal +12V.4 Enabled Disabled Load connected to ground (10Kohm).

5 Enabled Disabled Load connected to ground (10Kohm).

6 Enabled Disabled Positive bias for alarm main optocoupler (pin 1 on 15 pin D-sub)

7 Enabled Disabled Positive bias for alarm standby optocoupler (pin 3 on 15 pin D-sub)

8 Enabled Disabled Inverted logic on Alarm/M, Alarm/S and Master select.

9 Enabled Disabled Not in use.10 Enabled Disabled Not in use.

Table 3.4 Dip Switches, Function

3.3.5 Dip Switches, Default Settings

The following switch setting is default settings from factory unless other settings are

specified. These settings are optimised to communicate with Jotron Air to Ground

Communication Radios.

Sw nr. 1 2 3 4 5 6 7 8 9 10

Default

Settings

ON OFF ON ON ON ON ON OFF OFF OFF

Table 3.4.1 Dip Switches, Default Settings


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3.3.6 Dip Switches, Placing and Access

The dip switch unit is placed in the front of the main board.

The front plate has to be removed to get access to the unit.

Dip Switches

Figure 3.4.2 Antenna Changeover Unit, Removed Front Plate

.


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4 INSTALLATION

4.1 Introduction

The Change over unit can be installed in a standard 3 HU, 19 sub rack.

4.2 Power Supply

The unit are designed to operate from both AC and DC supply. Normally AC is the mainsupply and DC is the backup supply.

It will automatically switch to the backup supply in case the main supply fails.

The unit automatically selects 115VAC or 230VAC as appropriate.

Connection to the supplies should be made with good quality power cords.

4.3 Remote Interface

Logical inputs are optocouplers with an operating range of 5V to 48V. Logical outputs are dry

relay contacts, closed when active.


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5 OPERATING INSTRUCTIONS

5.1 Introduction

When connected correctly, the units operation is controlled by the connected radios.


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6 TECHNICAL DESCRIPTION ACUPlease see Maintenance and Repair Manual for more detailed technical description,

schematics and parts lists.

6.1 Introduction

X 81859MAIN

BOARD

X 99122POWER

BOARD

X 81860

ANTENNA

CHANGEOVER UNIT

The Antenna Changeover Unit consists of 2 printed circuit boards.

Power board, X-99122.

Main board, X-81859

6.2 Power Board

This module accepts both 115VAC and 230VAC inputs, so no voltage selection is necessary.

The AC voltage is rectified and converted to 24VDC. The 24VDC is then converted to

+5VDC and +12VDC.

6.3 Main Board

The input from the 15 pins D-sub connector (i.e. alarms and select) is fed into separate

optocouplers that tolerates a large voltage range. The input signal is then fed into the micro

controller. Based upon the combination of level on the different inputs and the setting of the

dipswitch (SW101) the software controls two internal relays.

One relay is feeding the internal RF switch with power and the other relays contacts is fed out

to the 15 pin D-sub for external control* and monitoring. These outputs are dry relay contacts.

*Connected to select input to Jotron radios.


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7 MAINTENANCE AND TROUBLESHOOTING

7.1 Environmental check

Once a year:

1. Turn OFF the unit.

2. Disconnect all plugs.

3. Clean all metal surfaces using a humid rag to remove dirt and dust.

4. Clean the knobs and connectors.

5. Connect all plugs.

6. Turn ON the unit.


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8 APPENDIX

8.1 Connection Example


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TECH MAN ACU vB