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Vislink DPA3 User Manual

Digital power amplifier
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See also: Operator's Manual
Vislink, Waterside House, Earls Colne Business Park, Colchester, Essex, CO6 2NS, UK
Telephone: +44 (0)1442 431300 ● Facsimile: +44 (0) 1494 775356 ● Email: sales@vislink.com ● Website: www.vislink.com
Company Registered in England & Wales no. 10523708 ● VAT registration no. GB 260 012 169
Registered Office: Waterside House, Earls Colne Business Park, Colchester, Essex, CO6 2NS, UK

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Summary of Contents for Vislink DPA3

  • Page 1 Vislink, Waterside House, Earls Colne Business Park, Colchester, Essex, CO6 2NS, UK Telephone: +44 (0)1442 431300 ● Facsimile: +44 (0) 1494 775356 ● Email: sales@vislink.com ● Website: www.vislink.com Company Registered in England & Wales no. 10523708 ● VAT registration no. GB 260 012 169...
  • Page 2 The information contained in this manual remains the property of Vislink. Do not use, disclosed or reproduced any of its content in any other form whatsoever without the prior written permission of Vislink. Vislink reserves the right to alter the equipment and specification appertaining to the equipment described in this manual without notification.
  • Page 3 Version Date Modification Updated By 03/08/2015 First release of document. A.Jackson 15/02/2017 Updated to new template. No technical change R.Swindells Issue No: 01A Page: iii Ref: DPA3-ASUM-7xxx Copyright © 2017 Vislink plc...

  • Page 4: Table Of Contents

    Installation..........................15 Figure 4-1 Front Panel Layout ...................... 11 Table 3-1 Specifications ........................ 9 Table 4-1 Front Panel Description ....................11 Table 5-1 Amphenol 62GB-16F14-12SN Connector Overview ........... 13 Issue No: 01A Page: iv Ref: DPA3-ASUM-7xxx Copyright © 2017 Vislink plc...

  • Page 5: General Information

    It is important to note that the guidelines adopted differ throughout the world and are from time-to-time re-issued with revised guidelines. For Vislink use, apply a maximum power density limit of 1W/m² when calculating minimum safe working distances.

  • Page 6: Maximum Rf Power Density Limits

    Documents a. and b. also show the RF power density guidelines to be frequency dependent. The two documents present different power density/frequency characteristics. To avoid complexity and areas of uncertainty, Vislink recommend the use of a single power density limit across the frequency range of 100 kHz to 300GHz. The 1W/m² power density limit we recommend satisfies the most stringent of the guidelines published to date.

  • Page 7: Introduction

    DPA3 Digital Power Amplifier User Manual Introduction Vislink designed the Digital Power Amplifier (DPA3) as an add-on to our digital transmitters to provide increased output power. Typical applications include mobile transmitters, such as helicopter downlinks. The DHPA operates over frequencies between 1.3 to 7GHz, in bands, with a typical factory set bandwidth of 400MHz and a nominal output power of up to 20W.
  • Page 8 DPA3 Digital Power Amplifier User Manual Introduction This page is intentionally unused. Issue No: 01A Page: 8 Ref: DPA3-ASUM-7xxx Copyright © 2017 Vislink plc...

  • Page 9: Specifications

    DPA3 Digital Power Amplifier User Manual Specifications Feature Details Frequency Band 1.3 to 7.0GHz Output Power Up to 20W Linear Pre-distortion Correction Automatically enabled Reverse Power Protected by circulator Impedance 50Ω in/out Spurious Better than -60dBc Gain Flatness +/-1dB over frequency range Gain vs.
  • Page 10 DPA3 Digital Power Amplifier User Manual Specifications This page is intentionally unused. Issue No: 01A Page: 10 Ref: DPA3-ASUM-7xxx Copyright © 2017 Vislink plc...

  • Page 11: Monitoring And Control Functions

    DPA3 Digital Power Amplifier User Manual Monitoring and Control Functions The unit provides optional monitoring of output RF power in the form of open collector logic – see Section 5.1. The unit has no control functions other than on/off through the application of DC power via the MIL spec connector.
  • Page 12 DPA3 Digital Power Amplifier User Manual Monitoring and Control Functions This page is intentionally unused. Issue No: 01A Page: 12 Ref: DPA3-ASUM-7xxx Copyright © 2017 Vislink plc...

  • Page 13: Connector And Pin Outs

    DPA3 Digital Power Amplifier User Manual Connector and Pin Outs Connector Type: Amphenol 62GB-16F14-12SN Description Forward power alarm (open collector) NC +20 – 30Vdc (ADL & MET Option Only) NC +20 – 30Vdc (ADL & MET Option Only) NC +20 – 30Vdc (ADL & MET Option Only) NC +20 –...
  • Page 14 DPA3 Digital Power Amplifier User Manual Connector and Pin Outs This page is intentionally unused. Issue No: 01A Page: 14 Ref: DPA3-ASUM-7xxx Copyright © 2017 Vislink plc...

  • Page 15: Installation Requirements

    Should you need to make any user-changes to the unit, ensure you read and understand the following warnings and cautions. CAUTION: Vislink strongly recommend returning any equipment requiring RF servicing to the factory. CAUTION: During the insertion or removal of interface connectors ensure that the connectors are free from debris and be sure not to damage the contact pins.
  • Page 16 DPA3 Digital Power Amplifier User Manual Installation Requirements This page is intentionally unused. Issue No: 01A Page: 16 Ref: DPA3-ASUM-7xxx Copyright © 2017 Vislink plc...

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