Nautel NV30 Bedienungsanleitung

NV30/NV40 Transmitter

Operations and Maintenance

Manual

Document:NHB-NV30-NV40-OPS-3.3

Issue: 3.3 2014-12-10

Status: Standard

Nautel Limited

10089 Peggy’s Cove Road

Hackett’s Cove, NS Canada B3Z 3J4

Phone: +1.902.823.3900 or

Toll Free: +1.877.6NAUTEL (6628835) (Canada & USA only)

Fax: +1.902.823.3183

Nautel Inc.

201 Target Industrial Circle

Bangor, Maine USA 04401

Phone: +1.207.947.8200

Fax: +1.207.947.3693

Customer Service (24 hour support)

+1.877.628.8353 (Canada & USA only)

+1.902.823.5100 (International)

Email: [email protected]

Web: www.nautel.com

The comparisons and other information provided in this document

have been prepared in good faith based on publicly available

information. The reader is encouraged to consult the respective

manufacturer's most recent published data for verification.

NV30/NV40 Operations and Maintenance Manual Table of contents

Page v

Contents

Release control record vii

Description 1-1

Ac-dc power stage 1-2

Control/monitor stage 1-3

RF drive stage 1-4

RF power stage 1-6

Operating the transmitter 2-1

Using the AUI 2-2

Home page 2-14

Menu page - describing transmitter operations 2-15

Logs page - viewing transmitter log 2-16

Viewing tool menu panels 2-25

Viewing real-time meters 2-40

Presets - editing operational settings 2-44

Viewing transmitter status 2-59

Factory Settings 2-61

System Settings 2-70

User accounts 2-79

Changeover page 2-83

User settings 2-84

Remote I/O page 2-104

Routine maintenance 3-1

Scheduled maintenance 3-1

Replacing an air filter 3-3

Performing on-air checks 3-5

NV30/NV40 Operations and Maintenance Manual Table of contents

Page vi Issue 3.3 2014-12-10

Replacing the control/interface PWB battery 3-6

Replacing the NVE exciter PWB battery 3-7

Inspecting lightning protection systems 3-8

Non-standard maintenance 4-1

Upgrading software 4-1

Improving transmitter performance for IBOC presets 4-4

Changing the RF output connector 4-6

Bypassing the UPS interface option 4-11

List of terms 5-1

NV30/NV40 Operations and Maintenance Manual

Issue 3.3 2014-12-10 Page vii

Release control record

Issue Date Reason

3.0 2011-11-10 Release 3 of product (NARF50B)

3.1 2012-12-15 Section 2: updated to support software release 4.0

Section 3: expanded air filter descriptions to include

M7, MERV 7 filters as suitable replacements

3.2 2013-10-01 Added Nautel Phone Home to User Settings

3.3 2014-12-10 Section 2: updated to support software release 4.2.7

or later; changed exciter TCXO screen to show dual

exciter option

NV30/NV40 Operations and Maintenance Manual

Page viii Issue 3.3 2014-12-10

NV30/NV40 Operations and Maintenance Manual Description

Issue 3.3 2014-12-10 Page 1-1

Section 1: Description

Refer to the functional block diagram: NV Series Transmitter Block Diagram - see page 1-9.

This section provides a high-level description of the transmitter’s key sections. The transmitter

circuitry is subdivided into four basic stages:

•Ac-dc power stage

•Control/monitor stage - see page 1-3

•RF drive stage - see page 1-4

•RF power stage - see page 1-6

NV30/NV40 electrical schematics

Some descriptions in this section refer to electrical schematics (SD-#s) . These are located in Section

5 of the NV30/NV40 Troubleshooting Manual.

Redundancy

The NV30/NV40 features redundancy in all key systems:

• RF power modules

• Exciters

• Cooling fans

• Cooling fan power supplies

• Low voltage power supplies

• SBC/AUI power supplies

NV30/NV40 Operations and Maintenance Manual Description

Page 1-2 Issue 3.3 2014-12-10

Ac-dc power stage

See electrical schematics SD-1 (A, Bor C), SD-2 and SD-3.

The ac-dc power stage converts the ac power source to a positive dc voltage (PA volts) for the

transmitter's intermediate (IPA) and RF power amplifiers. The transmitter accepts a wide range of ac

input voltage options:

– 3-phase, 180 - 264 V ac (208 V ac nominal)

– 3-phase, 312 - 457 V ac (380 V ac nominal)

– 1-phase, 180 - 264 V ac (240 V ac nominal)

The ac-dc power stage provides power to operate cooling fans in the power supply modules, RF

power modules and reject load modules. It also provides power to the low voltage power supplies,

which generate the low level dc voltages (±15 V and +5 V) used throughout the transmitter, and to

the +12 V dc power supplies for the SBC (single-board computer) and AUI (advanced user interface).

The ac-dc power stage comprises ac input terminal blocks TB1, TB2 and TB3, an ac distribution

assembly (A6), a power supply distribution PWB (A7), SBC/AUI power supplies A (U1) and B (U2),

LVPS modules A (U3) and B (U4), fan power supply modules A (U7) and B (U8), IPA power supply

modules A (U9), B (U10) and C (U11), and dual PA power supply modules (U12 through U43) for

each of the 16 RF power modules. There is also a PS interface PWB associated with each power

supply module (fan, IPA and PA).

Power supply modules

See Figure SD-2. Power supply modules U9 through U43 convert the ac input voltage to a regulated

dc supply (IPA volts and PA volts) for 16 RF power modules (module contains both IPA and PA).

Each switching power supply module provides 2000 W output, at typical levels of 50 V and 40 A. The

modules regulate the output voltage based on a PA (or IPA) Volts Control input from the control/

monitor stage. Test points on the associated PS interface PWB allow monitoring of module presence

and ac input status. Each module has a built-in cooling fan and each senses out-of-regulation and

excessive temperature conditions and applies PS Fail and PS Temp alarm signals to the associated RF

power module. Both conditions cause the power supply to shut itself down, thus reducing the

transmitter's RF output.

The same modules are used for fan power supply modules U7 and U8. Their PS Fail and PS Temp

alarm signals, as well as the PS Module Present status signal, are applied to the control/monitor stage.

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