Nautel NX50 User manual

NX50 Transmitter
Pre-installation Manual
Document:NHB-NX50-PRE
Issue: 6.0 2019-04-01
Status: Standard

Nautel Limited
10089 Peggy’s Cove Road
Hackett’s Cove, NS Canada B3Z 3J4
Phone: [phone] or
Toll Free: +1.877.6NAUTEL (6628835) (Canada & USA only)
Fax: [phone]
Nautel Inc.
201 Target Industrial Circle
Bangor, Maine USA 04401
Phone: [phone]
Fax: [phone]
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.
© Copyright 2019 NAUTEL. All rights reserved.

NOTICE FOR HD RADIO USERS ONLY
SALE OR DISTRIBUTION OF THIS DEVICE REQUIRES A
LICENSE FROM IBIQUITY DIGITAL CORPORATION.
(Contact [email protected])

NX50 Pre-installation Manual Table of contents
Page v
Contents
Release control record ix
About this manual xi
About Safety xv
Electrical Hazards xv
Lightning Hazards xvi
RF Hazards xvi
Toxic Hazards xvi
Other Hazards xvi
Safety Precautions xvii
Personal Safety xvii
Site Safety xviii
Equipment Safety xx
Description 1-1
Capabilities 1-1
Options 1-3
Pre-installation tasks 2-1
Preparing for installation 2-1
Physical requirements 3-1
Selecting a location for the transmitter 3-1
Weight 3-2
Dimensions 3-2
Clearances 3-3

NX50 Pre-installation Manual Table of contents
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Cooling requirements 4-1
Air flow 4-1
Cooling 4-3
Heating 4-4
Electrical requirements 5-1
Electrical power 5-1
Station reference ground 5-7
RF output requirements 6-1
RF output connector 6-1
Installing an antenna feedline 6-1
Antenna feed cable 6-2
Antenna system 6-4
Planning audio inputs 7-1
Analog Broadcasting inputs 7-1
Digital Broadcasting inputs 7-2
Other considerations 7-3
Planning control/monitor connections 8-1
Local AUI control 8-1
Remote Control 8-1
External system interlock 8-2
External PDM inhibit 8-3
Remote inputs 8-4
Remote outputs 8-9
Analog outputs 8-13
RF Monitor 8-14
Web based control 8-14

NX50 Pre-installation Manual Table of contents
Issue 6.0 2019-04-01 Page vii
Parts and tools 9-1
Contacting Nautel 9-1
Parts supplied by Nautel 9-1
Parts not supplied by Nautel 9-2
Parts ordering 9-2
Module replacement program 9-2
Tools for installation 9-3
Pre-installation assistance 10-1
Pre-installation consulting 10-1
Installation and commissioning service 10-1
Online documentation 10-3
On-site support 10-3
Training 10-3
Extended warranties 10-4
List of terms 11-1

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NX50 Pre-installation Manual
Issue 6.0 2019-04-01 Page ix
Release control record
Issue Date Reason
6.0 2019-04-01 Supports release 6 of hardware (NARA53E) and
software version NX SW 4.7 or higher.

NX50 Pre-installation Manual
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NX50 Pre-installation Manual
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About this manual
This manual provides information about preparing for the delivery and installation of an
NX50 transmitter. This manual is intended for use by field technicians, site managers, and
installation planners.
Using this manual
Read the task list provided in Section 2, “Pre-installation tasks” on page 2-1. The task list
describes the preparations you must make prior to receiving and installing the NX50
transmitter.
Later sections of the manual provide reference information regarding physical, cooling,
electrical, and antenna requirements.
Technical support
Nautel offers technical support to customers over the Internet and by telephone. Nautel’s
customer support team will answer your questions and work with you to identify and resolve
problems.
For 24-hour technical support, call toll free at 1.877.628.8353 (in USA and Canada only) or call
1.902.823.5100 (international) or find us on the Internet at http://support.nautel.com.
For parts and tools information, see “Parts and tools” on page 9-1 of the NX50 Pre-Installation
Manual.
For extended warranty information, see “Pre-installation assistance” on page 10-1 of the
NX50 Pre-Installation Manual.

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NX50 transmitter manuals
The NX50 documentation suite includes the following documents:
NX50 Pre-installation Manual, NX50-PRE. Provides instructions and reference information
needed when planning and preparing for the installation of an NX50 transmitter.
Nautel Site Protection Manual. Provides detailed information about protecting your site
from lightning-related hazards.
NX50 Installation Manual, NX50-INS. Provides instructions and reference information
needed when installing an NX50 transmitter.
NX50 Operating and Maintenance Manual, NX50-OPS. Provides instructions for
operating, maintaining and troubleshooting an NX50 transmitter. It also provides reference
information needed when performing diagnostic procedures.
NX50 Troubleshooting Manual, NX50-TRB. Provides detailed technical information about
the NX50 transmitter, including electrical schematics and mechanical drawings.
Nautel website / Online resources
The Nautel website provides useful resources to keep you up to date on your NX50.
Frequently asked questions (FAQ), How To videos, latest software versions are just a few of
the many resources available.
Nautel User Group (NUG)
The Nautel Support website allows access to product manuals and the RF Toolkit when you
create a free NUG account (see Figure 1 on next page).

NX50 Pre-installation Manual
Issue 6.0 2019-04-01 Page xiii
Figure 1: Accessing the NUG
Online Documentation
The Technical Documentation section of the Nautel Support website provides online access to
all the documentation for your NX50. Documentation is provided in Acrobat (PDF) format.
You can use the documentation online or print the sections that you need.
When using online documents:
• Click on the blue hyperlinks to jump to a related section.
• To search a document to find keywords, use Find in Acrobat Reader’s Edit menu.
• To quickly find a specific section, click the section in the PDF file’s Bookmarks list.
TOP BANNER OF NAUTEL SUPPORT HOME PAGE
support.nautel.com
NUG LOGIN PAGE

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About Safety
All Nautel transmitters are designed to meet the requirements of EN60215, Safety
Requirements for Radio Transmitters. The philosophy of EN60215 is that the removal of any
cover or panel that can only be opened using a tool is a maintenance activity, and that any
person performing a maintenance activity is expected to be trained for that activity. Under
EN60215, it is assumed that trained personnel will be knowledgeable and will take precautions
such as removing all power to the transmitter before accessing its components.
Electrical Hazards
To remove power from the transmitter, switch off and lock out the ac power. There are three
amber LEDs at the bottom rear of the cabinet that glow to remind anyone who has not turned
off the power that the system is live and serious danger is present.
DANGER - HIGH VOLTAGE
Indicates dangerous voltage (in excess of 72 volts), capable of causing a fatal
electrical shock, are present on or near parts bearing this label.
Mount the transmitter ac power disconnect switch/breaker close to the transmitter so that it
can be reached quickly in an emergency. Clearly label the switch/breaker (e.g., EMERGENCY
SWITCH).
After turning off the power, always perform a measurement to confirm that the power is off
before touching anything within the transmitter. If the wrong breaker was opened, the
equipment will be live.
Use only a non-contact voltage probe or a safety voltmeter (available from vendors such as
Fluke, Ideal, and Teagam).
WARNING: It is not enough to switch off RF power. The power line is still
connected. Disconnect and lock out the upstream supply before servicing.
WARNING: Do not use an ordinary multimeter to check for voltage, since it
may have been left inadvertently on the AMP (A) range, triggering a short
and an arc blast that could result in severe burns and even death.

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Use a proper lockout procedure to ensure that another worker cannot accidentally reapply
power while you are performing maintenance on any part of the transmitter or site.
Lightning Hazards
Before opening the transmitter and touching internal parts, remove and solidly ground the
antenna connection.
RF Hazards
A serious RF hazard and very high voltages exist in the vicinity of the antenna and its
networks during normal operations.
Toxic Hazards
There may be devices used in this equipment that contain beryllium oxide ceramic, which is
non-hazardous during normal device operation and under normal device failure conditions.
These devices are specifically identified with “(BeO)” in the Description column of the
Troubleshooting Manual’s parts list(s).
Do not cut, crush or grind devices because the resulting dust may be hazardous if inhaled.
Unserviceable devices should be disposed of as harmful waste.
Other Hazards
Ensure that appropriate fire alarms and fire extinguishers are available. Extinguishers must be
suitable for use on electrical fires.
Many other site safety risks exist. It is beyond the scope of this manual to identify all the risks
and procedures.
WARNING: It is not enough to ground the antenna terminal with
the antenna still connected. Even a small impedance in the ground
strap will result in lethal voltages during a lightning strike.