Samson UHF Series One Manuel utilisateur

SAMSON®

•dbx® Noise Reduction

TRUE

DIVERSITY

WIRELESS

SYSTEM

UR-4 RECEIVER

UT-4 BELT PACK TRANSMITTER

UH-4 HAND-HELD MICROPHONE TRANSMITTER

UHF

SERIES

DA-5H UHF ANTENNA DISTRIBUTION AMPLIFIER

Introduction 1

System Features 3

Guided Tours 5

UR-4 Front Panel 5

UR-4 Rear Panel 7

UT-4 9

UH-4 12

Setting Up and Using the

UHF Series System 15

About dbx®Noise Reduction 19

Trouble-shooting 20

UT-4 Multi-pin Lavalier Wiring Guide

and Chart 23

About The DA-5H UHF Antenna

Distribution Amplifier 26

Guided Tour - DA-5H Front Panel 27

Guided Tour - DA-5H Rear Panel 28

Setting Up and Using the DA-5H 29

DA-5H Grounding Techniques 31

Glossary of Terms 32

Specifications 34

Introduction

Congratulations on purchasing the Samson UHF Series True Diversity

System! Although this product is designed for easy operation, we sug-

gest you take some time out first to go through these pages so you can

fully understand how we’ve implemented a number of unique features.

Every wireless system consists of at least two components—a receiver

and a transmitter, both of which must be tuned to the same channel (that

is, the same radio frequency) in order to operate correctly.* The UHF

Series System you have purchased contains a UR-4 receiver and either

our UT-4 belt-pack transmitter (for lavalier microphone, headset micro-

phone, and guitar applications) or our UH-4 hand-held microphone trans-

mitter. The illustration below shows an overview of our system design:

* Your receiver and transmitter have been factory preset to utilize the

same channel. A listing of the six available channels and their corre-

sponding UHF frequencies can be found on page 34 of this manual.

SERVO- 240

SAMSON

OPEN

INPUT

UT-4

SAMSON

Beltpack Transmitter

UHFSynth Series SAMSON

MPL2242

SAMSON

UHFWirelessReceiver

ANT-A50 Ω

938-952MHz

UHF Series

A B +6

-3

-6

-10

-15

-20

-25

-30

Channel

DIVERSITY

Mute

Power

dbx

NOISE

REDUCTION

UR-4

A-1947.125MHz

ANT-A50 Ω

938-952MHz

OFF

VOLUME RFLEVEL AFLEVEL

Introduction

The concept behind a “true diversity”wireless system is that a single

chassis houses two discrete receivers (called “channel A”and “channel

B”) instead of one, with both tuned to the same frequency but with each

using an independent antenna. A built-in computer chip then

continuously scans the two receivers and determines which one has the

clearest and strongest reception, automatically (and silently) switching to

that channel. This allows you to maintain the wireless communication

link over a much broader area range than would be allowed by a single

receiver and also virtually eliminates interference and phase cancellation

problems. In addition, our special circuitry, which utilizes the UHF (Ultra

High Frequency) band, delivers the highest-quality sound available in

any wireless system. Finally, the provision of dbx®noise reduction*

produces crystal-clear sound with minimized background noise and hiss.

Your UHF Series True Diversity System may also optionally include a

DA-5H UHF Antenna Distribution Amplifier. For more information on this

device, see pages 26 - 31.

In this manual, you’ll find a more detailed description of the features of

this system, as well as a guided tour through all components, step-by-

step instructions for setting up your system, trouble-shooting tips, wiring

diagrams and tables, a glossary of terms, and full specifications. You’ll

also find a warranty card enclosed—don’t forget to fill it out and mail it!

This will enable you to receive online technical support and will allow us

to send you updated information about these and other Samson prod-

ucts in the future.

SPECIAL NOTE: Should any component of your UHF Series True

Diversity Wireless System ever require servicing, a Return Authorization

number (RA) is necessary. Without this number, the unit will not be

accepted. Please call Samson at 1-800-372-6766 for a Return

Authorization number prior to shipping your unit. Please retain the

original packing material and, if possible, return the unit in its original

carton and packing materials.

* dbx is a registered trademark of Carillon Industries.

System Features

The Samson UHF Series True Diversity System utilizes state-of-the-art

technology in wireless communications. Here are some of its main

features:

•The use of the UHF (Ultra High Frequency) band as opposed to VHF

(Very High Frequency). This yields better signal-to-noise ratio and

improved frequency response—in plain English, superior sound

quality. The UHF band is also considerably less crowded than VHF,

thus minimizing potential interference problems. In addition, our

special dielectric filtering circuitry (which, incidentally, is based upon

cellular phone technology) provides extra narrow bandwidths, thus

further reducing interference.

•Six available channels that can be used in the same location

simultaneously. This maximizes the system’s effectiveness in UHF

multi-system venues and ensures noise-free performance when

used side by side with VHF systems in crowded RF environments.

•True Diversity technology, which greatly extends the effective range

of the system and also virtually eliminates interference and phase

cancellation problems.

•Built-in dbx®noise reduction circuitry in both the transmitter and

receiver. This ensures clear, transparent sound with an absolute

minimum of background noise and hiss.

•The UR-4 receiver provides a clear, easy-to-read visual display that

shows continuous RF (Radio Frequency) level (indicating the

strength of the received signal) as well as AF (Audio Frequency)

level.

•The UR-4 receiver offers both balanced and unbalanced audio out-

puts, making it compatible with all types of external audio mixers and

amplifiers.

•Tuned coaxial receiver antennas are included, with options for rear-

mounting or remoting if extended range is required.

•The UT-4 and UH-4 transmitters both accept standard 9-volt alkaline

batteries.

System Features

•The UT-4 belt-pack transmitter is extremely light-weight (less than 4

ounces with a 9-volt battery installed) and is suited for a wide range

of lavalier microphones, headset microphones and instruments

such as electric guitar and bass. It also provides phantom

powering, making it compatible with professional condenser lavalier

and headset microphones.

•The UH-4 hand-held microphone transmitter features an all-brass

housing painted with a durable epoxy base. The unit is finished in a

smooth, non-glare black neoprene covering to ensure a firm, com-

fortable grip. A selection of mic capsules are available, including:

Electro Voice 757 N/DYM Dynamic

Electro Voice 857 N/DYM Dynamic

Sennheiser MKE-4032 Condenser

Shure SM58 Dynamic

Shure SM85 Condenser

Shure SM87 Condenser

•Both the UT-4 and UH-4 transmitters provide “popless”muting,

which turns off the audio signal while leaving the carrier signal on.

•Both the UT-4 and UH-4 transmitters offer Sensitivity controls that

adjust the transmitter input level for different user sound pressure

levels and different mic capsules or lavalier/headset microphones.

•All components have rugged construction that ensures reliable

operation in even the most demanding performance environments.

Guided Tour - UR-4 Front Panel

1: Power switch - Use this to turn the main power on and off. When

the receiver is on, both the “Power”and “Diversity”LEDs in the display

section (see #4d and #4f on the following page) will be lit.

2: Antenna A and B mountings - Connect the supplied antennas to

these mountings. Third-party receiver antennas should not be

substituted—use only the antennas provided with your receiver.

3: Volume control - This knob determines the level of the audio signal

being output through both the balanced and unbalanced output jacks on

the rear panel.

4: Display section - Shows information about the current status of the

receiver.

4a: RF (Radio Frequency) Level “A”/“B” display - This “ladder”

display (similar to the VU bar meter used on audio devices) continuously

indicates the strength of the UHF signal being received by antennas A

and B. When all ten segments are lit, the incoming signal is at maximum

strength; when only the lowest segment is lit, the incoming signal is at

minimum strength. If no segments are lit, no signal is being received;

check to ensure that the transmitter is on and that the transmitter and

receiver are set to the same channel (see the “Trouble-shooting”section

on page 20 for more details). 5

2342

SAMSON

UHF Wireless Receiver

ANT- A 50 Ω

938 - 952MHz

UHF Series

A B + 6

+ 3

- 3

- 6

-10

-15

-20

-25

-30

Channel

DIVERSITY

Mute

Power

dbx

NOISE

REDUCTION

UR-4

A-1 947.125MHz

ANT- A 50 Ω

938 - 952MHz

OFF

VOLUME RF LEVEL AF LEVEL

A B + 6

+ 3

- 3

- 6

-10

-15

-20

-25

-30

Channel

DIVERSITY

Mute

Power

dbx

NOISE

REDUCTION

4a 4b

4d 4e 4f

Guided Tour - UR-4 Front Panel

4b: AF (Audio Frequency) Level display - This “ladder”display

(similar to the VU bar meter used on audio devices) indicates the

strength of audio output signal. For optimum signal-to-noise ratio,

adjust the Volume knob (see #3 on the previous page) so that the “0”

segment (third from the top) lights frequently, with only occasional

excursions into the “+3”and “+6”segments. If none of these segments

are lit, little or no signal is being output; see the “Trouble-shooting”

section on page 20 for more details.

4c: “A”/“B”LEDs - These LEDs show you whether signal from the “A”

or “B”receiver is currently being used; when signal is being received,

one of them will be lit. A computer chip inside the UR-4 constantly

scans the two and automatically selects whichever is receiving the

strongest, clearest signal. This “true diversity”switching is completely

inaudible, but it effectively increases overall range while reducing poten-

tial interference and phase cancellation problems.

4d: “Diversity”LED - Lights whenever the UR-4 is powered on.

4e: “Mute”LED - Lights to indicate the absence of carrier signal.

When “MUTE”is lit, either the transmitter Mute switch is in the “on”

position or the transmitter’s channel does not match that of the receiver.

4f: “Power”LED - Lights whenever the UR-4 is powered on.

Guided Tour - UR-4 Rear Panel

1: AC input - Connect the supplied standard 3-pin “EEC”plug here.

2: Balanced output* - Use this electronically balanced low impedance

(600 Ohm) XLR jack when connecting the UR-4 to professional (+4)

audio equipment. Pin wiring is as follows:

* If required, both the balanced and unbalanced outputs can be used

simultaneously.

344

DISTRIBUTOR A

SAMSON

SAMSON TECHNOLOGIES CORP.

HICKSVILLE, NEW YORK, U.S.A.

UHF RECEIVER MODEL No.UR-4

ANT - A

120V~60Hz 15W

POWER

RATING

RISK OF ELECTRIC SHOCK

DO NOT OPEN

CAUTION

ATTENTION:

RISQUE DE CHOC

ELECTRIQUE NE PAS OUVRIR.

ATTENTION: ANTENNA CONNECTIONS ARE POWERED BY DC 9V

MANUFACTURED UTILIZING TECHNOLOGY, LICENSED FROM CARILLON TECHNOLOGY INC.

DBX IS A REGISTERED TRADEMARK OF CARILLON ELECTRONICS CORPORATION.

ANT - A BALANCED OUTPUT

-60dBm.600Ω

UNBALANCED

OUTPUT

-10dBv.5KΩ

GND

HOT

COLD

FCC ID 8GPUR - 4

MADE IN JAPAN

3 - SIGNAL

2 + SIGNAL

1 GROUND +

Guided Tour - UR-4 Rear Panel

3: Unbalanced output* - Use this unbalanced high impedance (5K

Ohm) 1/4”jack when connecting the UR-4 to consumer (-10) audio

equipment. Wiring is as follows:

4: Rear-mount antenna knockouts - The receiver antennas can

optionally be mounted at these areas of the rear panel. Contact

Samson Technologies for information about our rear-panel antenna

mounting kit.

* If required, both the balanced and unbalanced outputs can be used

simultaneously.

+ SIGNAL

GROUND

+ SIGNAL GROUND

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