Nautel GV5 Handbuch

3: OPERATIONS & MAINTENANCE

MANUAL

GV5/GV3.5

TRANSMITTER

Document ID: NHB-GV3.5-GV5-OPS

Version: 0.2

Issue Date: 2014-07-23

Status: Preliminary

Making Digital Radio Work

VERSION 0.2 2014-07-23 PAGE III

GV5/GV3.5 OPERATIONS & MAINTENANCE MANUAL

Contact Information

Nautel Limited

10089 Peggy’s Cove Road

Hackett’s Cove, NS Canada B3Z 3J4

Toll Free: +1.877.6NAUTEL (662.8835)

(Canada & USA only) or

Phone: +1.902.823.3900 or

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.

For verification of materials, the reader is encouraged to consult the

respective manufacturer's most recent publication on the official

website or through contact with Customer Service.

GV5/GV3.5 OPERATIONS & MAINTENANCE MANUAL TABLE OF CONTENTS

VERSION 0.2 2014-07-23 PAGE 3.V

CONTENTS

Contact Information 3.iii

RELEASE CONTROL RECORD 3.vii

Description 3.1.1

Ac-Dc Power Stage 3.1.1

Control/Monitor Stage 3.1.3

RF Drive Stage 3.1.4

RF Power Stage 3.1.5

Operating the Transmitter 3.2.1

User Interface Options 3.2.4

Advanced User Interface (AUI) 3.2.9

Controller Front Panel 3.2.17

Home Page 3.2.24

Viewing Transmitter Log 3.2.27

Viewing Tool Menu Panels 3.2.37

Viewing Real-Time Meters 3.2.53

Presets - Editing Operational Settings 3.2.60

Resetting Alarms 3.2.98

Viewing Transmitter Status - using the AUI 3.2.99

System Settings 3.2.101

User Accounts 3.2.130

Changing Exciter Transfer Settings 3.2.134

User Settings - AUI 3.2.137

User Settings - Controller UI 3.2.166

Configuring Remote Inputs and Outputs 3.2.173

Preset Scheduler 3.2.187

Audio Player 3.2.190

GV5/GV3.5 OPERATIONS & MAINTENANCE MANUAL TABLE OF CONTENTS

PAGE 3.VI VERSION 0.2 2014-07-23

Enabling and Operating the Orban Audio Processor 3.2.196

Routine Maintenance 3.3.1

Scheduled Maintenance 3.3.1

Replacing an Air Filter 3.3.3

Performing On-Air Checks 3.3.6

Replacing the Controller Module’s Battery 3.3.7

Inspecting Lightning Protection Systems 3.3.9

Non-standard maintenance 3.4.1

Upgrading Software 3.4.1

Configuring a Mod Loss Backup Preset 3.4.4

List of terms 3.5.1

GV5/GV3.5 OPERATIONS & MAINTENANCE MANUAL

VERSION 0.2 2014-07-23 PAGE 3.VII

RELEASE CONTROL RECORD

ISSUE DATE REASON

0.1 2013-04-04 Preliminary Release of GV5/GV3.5 (NARF71A/02)

0.2 2014-07-23 Updated Section 2: Operating the Transmitter for software

version 4.1; added information for Xmtr PA Bias routine

GV5/GV3.5 OPERATIONS & MAINTENANCE MANUAL

PAGE 3.VIII VERSION 0.2 2014-07-23

GV5/GV3.5 OPERATIONS & MAINTENANCE MANUAL DESCRIPTION

VERSION 0.2 2014-07-23 PAGE 3.1.1

SECTION 3.1: DESCRIPTION

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 3.1.3

RF Drive Stage - see page 3.1.4

RF Power Stage - see page 3.1.5

Refer to the functional block diagrams: Figure 3.1.1 on page 3.1.9 (GV5/GV3.5 transmitter) and Figure

3.1.2 on page 3.1.10 (audio path).

GV5/GV3.5 Electrical Schematics

Some descriptions in this section refer to electrical schematics (SD-#s) . These are located in Section 4 of

the GV5/GV3.5 Troubleshooting Manual.

Ac-Dc Power Stage

See electrical schematic Figure SD-1. The ac-dc power stage provides power to operate the low voltage

power supplies, which generate the 40 to 48 V dc voltage that is converted to the low level dc voltages

(±15 V and +5 V) used throughout the transmitter. This voltage is also conditioned to operate cooling

fans in the RF power module and reject load assemblies. The ac-dc power stage also converts the ac

power source to a positive dc voltage (PA volts) for the transmitter's RF power amplifiers and exciter(s).

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 comprises ac input terminal block TB1, power supply interface PWB (A1), low

voltage power supply (LVPS) modules A (U2), B (U3), and power supply modules (U4 through U7), two

for each of the two RF power modules. There are three amber LED pilot lamps (DS1 through DS3),

located in the bottom, rear of the cabinet, that indicate the presence of each ac phase.

GV5/GV3.5 OPERATIONS & MAINTENANCE MANUAL DESCRIPTION

PAGE 3.1.2 VERSION 0.2 2014-07-23

Power Supply Interface PWB

See electrical schematic Figure SD-1. The power supply (PS) interface PWB (A1):

interfaces between the ac input on terminal block TB1 and the LVPS and power supply

modules.

distributes LVPS voltage to the RF drive (exciter) stage and the control/monitor stage.

distributes PA voltage to the RF power stage and the control/monitor stage.

controls, with the controller module, the LVPS output voltage.

provides RS485 serial communication between the module control/interface PWB and the RF

power module power supplies.

allows configuration of the LVPS modules if the UPS option is installed.

provides status and alarm outputs from the LVPS and power supply modules, consisting of

Module Present, Power Fail Warning, Rectifier Fault and Overtemp Warning (provided to the

module control/interface PWB over a serial bus).

LVPS Modules

See electrical schematic Figure SD-1. LVPS modules A (U2) and B (U3) convert the ac input voltage to

the regulated output (40 - 48 V dc, nominally 40 V) that is applied to, and controlled by, the controller

module via the module control/interface PWB. +5 V, +15 V and -15 V regulated outputs are developed

from the LVPS output voltage (40 - 48 V dc) on the module control/interface PWB.

Power Supply Modules

See electrical schematic Figure SD-1. Power supply modules U4 through U7 convert the ac input voltage

to a regulated dc supply (PA volts) for both RF power modules. Each switching power supply module is

rated for a nominal 2725 W and provides an output voltage between 18 V and 53 V (typically 40 V). The

modules regulate the output voltage based on a serial control input from the controller module (A4),

applied via the module control/interface PWB. Each module has a built-in cooling fan, senses excessive

temperature conditions and applies an Overtemp Warning signal (for indication purposes only) to the

module control/interface PWB. The module also senses out-of-regulation on the ac input and dc output,

and applies a Power Fail Warning signal to the module control/interface PWB. Both conditions cause the

power supply to shut itself down, thus reducing the transmitter's RF output. All power supply module

signals are applied to the controller for system level monitoring.

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