DaySequerra M4 Series User Manual

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Welcome

Thanks for purchasing a DaySequerra M4 Series HD Radio™ Tuner. We design and build all of our
DaySequerra products to be completely reliable and easy to use, so you can concentrate on producing
and hearing great sounding broadcasts, instead of struggling with complicated equipment or difficult to
use product manuals.

While the M4 has been designed to be straightforward to use, we do suggest that you spend a few
minutes familiarizing yourself with the features and operational functions that are contained in this
manual.

DaySequerra has been building broadcast quality products since 1989. The technology developed for
the M4, and all of our products, has evolved through a process of user feedback, extensive listening,
field-testing and careful refinement.

In the event that you encounter any technical or operational difficulties with this or any DaySequerra
product, please feel free to contact us at 856-719-9900. Our office hours are from 9 to 5, Monday
through Friday, ET. Or you can email your questions to: [e-mail]

Also, please remember to visit our website www.daysequerra.com for warranty registration and the
latest DaySequerra product information.

We have worked hard to ensure that your DaySequerra M4 Series tuner will reliably serve as a flawless
link between the transmitter and your monitoring facility, or as the primary broadcast reference source
in your studio.

We sincerely hope our products help you achieve a new level of excellence in your work, and in your
listening pleasure!

David V. Day
and the DaySequerra Team

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| | | | |

Day Sequerra 154 Cooper Rd. S902 W. Berlin, NJ 08091 Voice 856-719-9900 Facsimile 856-719-9903 www.daysequerra.com

M4 User Manual

Table of Contents

Important Safety Information 4

Service Information 4

Introduction 4

M4 Series Key Features 5

M4 Series Technical Specifications 5

Unpacking and Installing 6

Front Panel Controls and Indicators 6

M4 Series Operating Description 7

Sample VFD Displays 10

Performance Loss Monitor 10

M4.2R Ethernet Port Setup 15

Three Year Warranty 16

• Added M4.2R with Performance Loss Monitor (PLM, including 6 dry-contact alarm relay

• Eliminated “Standby at Turn-on” feature and improved brown-out performance

• Number of AM and FM Presets doubled from 10 to 20 for each band

• Capability to store Multicast stations as FM Presets

• Multicast Set feature to keep tuner continuously monitoring selected HD-2 through HD-8

• iBiquity multicast PSD patch addresses importer cross-porting

• New “Scrolling Data” mode sequentially displays selected HD Radio

• Displays HD-1 for MPS channel modem lock in VFD

• New DATA-DISPLAY menu with firmware version, scrolling data and muting options

• Redesigned user interface for MPS, Multicast and Forced Analog modes

M4 Firmware v4.0.9 and v4.2.9 - New Features

closures), full-time digital audio output, Ethernet remote port and RBDS decoding

channel

TM

channel PAD

fields

• Support for optional M4.0X Performance Loss Monitor (PLM) with 6 alarms

All rights reserved ATI Group Inc. Copyright 2007.
All logos and trademark used herein are the property of their respective owners.
Specifications subject to change.

M4.0 Revision K.

M4 User Manual

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Important Safety Information

• Indoor use only. Not for use in wet or damp environments.

• Maximum Relative Humidity: <80%

• Class I Equipment (grounded type)

• Electrical rating: 100-120/220-240V~50-60Hz 15W

• Fuse Rating: 2A 250V 20MM

• AC Mains supply voltage fluctuations are not to exceed +

10% of the nominal voltage

• Operations temperature range -40°C to 70°C

• Maximum altitude: 3000m (9843 feet)

• Equipment suitable for continuous operation

• Weight: 2.9kg (6.5lbs) equipment only; 5.4kg (12 lbs.) shipping

Important Note: Please connect your M4 to an on-line, zero-crossing output uninterruptible
power supply (UPS) to provide protection against power surges and brownouts.

Service Information

The DaySequerra M4 contains no user serviceable components inside the unit. Please contact
DaySequerra for repair and upgrade information. In the event that your unit needs to be returned to the
factory, contact us for a return authorization number. Please visit www.daysequerra.com and
register your new M4 so we can keep you informed of the latest hardware and software updates.

Introduction

The DaySequerra M4 HD Radio
designed to be the industry benchmark in sensitivity (< 5.0dBf in FM) and reliability, and at the same
time deliver the highest quality, most accurate monitoring of existing analog and HD Radio
FM broadcast signals (THD+N <.005% with stereo separation of >90dB for HD Radio

Just like its larger sibling, the DaySequerra M2, the M4’s ultra low noise RF front-end with built-in
preselector and double-balanced mixer, low-jitter DAC and Class-A biased audio outputs provide the
highest fidelity reception and demodulation of HD Radio
applicable data (PAD) for MPS (HD-1) and HD-2 through HD-8 multicast signals.

Its robust, modular architecture ensures that the M4 will never become obsolete. This design approach
along with our Factory Product Upgrade program ensures that your investment in a DaySequerra
product will continue to pay off well into the future. Visit www.daysequerra.com for details including
the addition of a PLM option to your M4.0X or upgrading to a fully-featured M4.2R. DaySequerra
M4 Series models include:

M4.0X
M4.2R

Base Broadcast Unit, rack-mount.
Enhanced Broadcast Unit, rack-mount, includes RBDS, Signal Strength and Multipath
Displays, Ethernet interface with Remote Dashboard™ software, Performance Loss Module
with 6 alarm relays, full-time digital output

M4C

Audiophile table-top version of M4.0X

TM

Tuner is one of the finest broadcast quality tuners available. It was

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FM signals).

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programs, including display of program

AM and

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M4 User Manual

M4 Series Key Features

SEPARATE AM AND FM ANTENNA INPUTS – Industry standard 75-ohm “F” connectors

STEREO ANALOG OUTPUTS – Balanced (+4dBm) for 100% analog modulation on XLR connectors

TM

DIGITAL AUDIO OUTPUT – 110-ohm transformer isolated XLR for HD Radio

IEC320 POWER INLET – Integrated fuse holder on rear panel

SYNTHESIZED TUNING – AM and FM bands including multicast channels each with 20 presets

VACUUM FLUORESCENT DISPLAY – Multi-function VFD for tuner and station status

LEFT AND RIGHT AUDIO LEDS – Audio signal present indication

PEAK LEVEL LED – Flashes red for over +4dBm demodulated audio output (either channel)

TM

HD LOCKED – HD Radio

DELAY SET – Indicates active analog diversity delay for HD Radio

audio present, indicates digital carrier S/N > 58dB/Hz

TM

broadcasts

HEADPHONE OUTPUT – Recessed screwdriver gain control on front panel

TM

A-D SPLIT MODE – HD Radio

level, phase and time alignment monitor for analog diversity delay

RBDS DECODING – (M4.2R only) Program Service (PS) and Radio Text (RT) fields displayed on VFD

PROGRAMMABLE STATUS ALARMS – M4.2R and M4.0X PLM option provides 6 dry-contact relays

TM

FULL TIME DIGITAL AUDIO OUTPUT – (M4.2R only) For HD Radio

and analog broadcasts

broadcasts

M4 Series Technical Specifications

RF TUNING RANGE AM – 520kHz to 1720kHz in 10kHz increments

RF USEABLE SENSITIVITY AM – 5dBf (0.9µV) 20dB SNR at 30% modulation

RF USEABLE INPUT RANGE 15µV to 30KµV – AM or FM

IF REJECTION AM – greater than 100dB for 20dB SNR

AF BANDWIDTH AM – + 1dB 40Hz to 15kHz

FM – +

AF THD+N < 0.005% (digital audio)

STEREO CHANNEL SEPARATION > 90dB (digital audio)

HD Radio

HD Radio

HD Radio

TM

HYBRID ACQUISITION < 4.5 seconds

TM

BLEND LEVEL ACCURACY < 0.5dB

TM

PAD DATA DISPLAY HD RadioTM data fields limited to a total of 1018 bytes per

FM – 87.9MHz to 108.1MHz in 200kHz increments

FM – 5dBf (0.9µV) 30dB SNR at 100% modulation

FM – greater than 100dB for 30dB SNR

1dB 20Hz to 20kHz

message per iBiquity

TM

specifications.

M4 User Manual

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