Telex Microphone N DYM SERIES User Manual

N/DYM SERIES WIRELESS

USER GUIDE

W I R E L E S S

M I C R O P H O N E

GEBRAUCHSANWEISUNG

MODE D’EMPLOI

S Y S T E M

INSTRUCCIONES DEL USUARIO

SYSTEME DE

MICROPHONE

S A N S F I L

SISTEMA

M I C R Ó F O N O

INALÁMBRICO

D R A H T -

M I K R O F O N -

S Y S T E M

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2. System Description

The Electro-Voice N/DYM Wireless is a series of 10 channel frequency agile UHF wireless systems that combine

EV’s legendary quality and reliability with high value. The N/DYM Series transmitters and receivers operate in the

UHF frequency range on one of ten channels between 800 and 814 MHz. The well-designed audio circuitry

ensures excellent signal-to-noise ratio with accurate sound quality.

System Features

• 10 Channel Frequency Agile UHF system operation.

• Choice of two handheld and four bodypack

• Featuring “ClearScan^TM” which makes for quick and

systems, including a system specifically for guitar.

easy system setup.

• Permanently attached antennas make setup quick

and easy.

• Handheld transmitters feature EVs’ N/DYM mic

elements, for superior sound quality.

• Receivers may be rack-mounted with optional kit.

• True-diversity system with Secure-Phase^TMensures

maximum range and freedom from interference.

• Audio output via 3-pin XLR-type balanced mic level

and ¹/4-inch unbalanced line level connectors.

• Well-designed companding and audio circuitry

insures high signal-to-noise ratio and excellent

sound quality.

3 Detailed Setup Instructions

While scanning, the channel display will show the

channel number being scanned. When

ClearScan^TMis complete, the display will stop

flashing and it will display the number of the chan-

nel recommended for use.

3.1 Receiver Setup & Operation

1. Place the receiver where there is a clear line of

sight to the area where the transmitter will be

used. Rotate the receiver’s antennas and

separate them 90 degrees (see Figure 1).

NOTE: If using more than one N/DYM system, set

up ONE system at a time. Turn on the transmitter

for the first system, before using ClearScan^TMto

set up the second. Please see the “Guideline/

Recommendations for best performance” section

to setup more than two systems.

2. Connect the power supply cord to the receiver.

Plug the power supply into an AC outlet Confirm

that the receiver is ON by checking for the lit

red/green Diversity light and channel

display on the front panel.

4. Setting the channel. Changing the channel on

the receiver can also be done manually. By

momentarily depressing the Set button, the

channel number is increased by one.

NOTE: Upon power-up, the receiver will return to

the channel it was set to when it was turned off.

CAUTION: Please make sure that the AC

adapter is the correct voltage for your local

requirements.

ClearScan^TM: The N/DYM Wireless system fea-

tures ClearScan^TM. ClearScan^TMautomates the

process of finding a clear channel to use in setup

of your N/DYM Wireless system. To use

NOTE: When the system is turned off, the

channel number is saved in non-volatile memory.

When the receiver is turned on, it will return to the

same channel number.

ClearScan^TM, depress and hold down the set but-

ton for 3 seconds. When the channel display

begins flashing release the set button. The receiv-

er is now searching for a clear frequency, by

measuring the RF energy present on each chan-

nel. The entire process will take about 5 seconds.

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Figure 1. Front View

Figure 2. Rear View

5. Channel change lock-out. Once the channel has

been set on the receiver, the N/DYM system has

the capability to deactivate or lock-out the

channel change button. This is done by

Once the Transmitter has been set-up, and

turned on….

8. Speak into the microphone or play the guitar. Turn

up the level on the mixer or preamp until you’re

able to hear the desired signal.

depressing the set button for 10 seconds or more.

Lock-out is active when the decimal point illumi-

nates in the lower right corner of the

channel display. This will defeat the set button. To

override or defeat the lockout function, again

depress the set button for 10 seconds. This will

reactivate the channel set button to work

NOTE: If using the ¹/4” jack output, It may be

necessary to adjust the receiver’s output until

the volume level from the wireless system approxi-

mates the level of an equivalent wired microphone

or instrument.

normally. This function can be useful when the

wireless is in a location where unauthorized per-

sonnal have access to the receiver.

NOTE: If the system is in “lock-out”, ClearScan^TM

9. “Walk” the expected area of use to check for

dropouts or interference. If problems occur, see

the troubleshooting section.

10. Adjust the squelch control if necessary. The

squelch control on the back of the receiver may be

adjusted to effectively increase range or to reduce

interference. The factory setting is at a midpoint,

which should be suitable for most situations. To

effectively increase range, turn the control counter-

clockwise until you hear noise or interference.

Then, turn the squelch clockwise until the noise is

muted. To reduce interference, turn the control

clockwise.

will not function.

6. Make sure the gain setting is muted or turned

down on the mixer channel or amplifier input you

will connect the wireless system to.

7. Plug the audio cable (not supplied) into either out-

put connector.

NOTE: The 3-pin XLR-type connector is the

preferred choice since the output is balanced.

Either connector may be used with good results. If

the ¹/⁴-inch connector is being used, turn the

volume level control (see Figure 1) on the front

panel to the twelve o’clock position (midway in the

control’s range).

NOTE: If the squelch is being adjusted, the trans-

mitter should be turned off.

Caution! Increasing the range will make the

system more susceptible to outside interfer-

ence! Reducing interference will also effective-

ly decrease the range, which will make the sys-

tem more susceptible to dropouts.

NOTE: The 3-pin XLR-type connector output level

is fixed, and cannot be adjusted.

Now refer ahead to details on how to set up the

transmitter.

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5. Unmute the audio by sliding the audio switch

3.2 Handheld Transmitter Setup

(immediately below the mic element) towards the

windscreen. Speak or sing into the microphone

and you should hear your voice through the

PA / sound system.

1. Insert battery. Slide open the hinged battery

compartment cover by placing your thumb on the

indents of the battery door (at the bottom of the

transmitter) and gently pushing down (see Figure

3). Insert the battery, terminal end first, into the

compartment, with the smaller positive terminal to

the right.

6. Adjustment of the transmitter audio gain - if

necessary. The transmitter audio gain is set to

a mid level which should be suitable for most

situations. However, for loud or soft speakers or

singers, an adjustment may be necessary. First,

speak or sing into the microphone and listen close-

ly. If the gain is too high, you will hear distortion,

and if the gain is too low, the signal will be low. In

either situation, an adjustment may be necessary.

Figure 3.

To adjust the transmitter gain, gently insert the

provided screwdriver (or other 3/32-in. screwdriver)

into the hole near the head of the transmitter (see

Figure 4). Turn lightly until the screwdriver tip drops

into the slot in the level control. Gently turn counter-

clockwise until the control stops (the mic output is

attenuated but not “off”). Slowly turn the mic-level

control up while listening to the audio. If the audio

becomes distorted, turn the mic level control down

(counter-clockwise) about 1/8 turn.

NOTE: Operate with the transmitter audio gain set

as high as possible without distortion, for the best

signal to noise ratio.

7. Test performance. Check to see that the yellow

“Tx On” light on the front panel of the receiver is

illuminated, an indication that the receiver is picking

up the signal. Then, “walk” the intended area of use

and make sure that there are no barriers to

2. Set handheld transmitter channel to match the

channel setting on the receiver (channel number

displayed on front of receiver panel). The channel

setting on the handheld transmitter is accessed

through the round opening on the side of the mic

housing. Numbers 0 - 9 are printed around the

opening. The channel setting is determined by

which number the arrowed slot is pointing to. Use a

small screwdriver (supplied) to change the channel

setting. See Figure 4.

reception or sources of interference. If problems

are encountered, see Troubleshooting Guide.

Figure 4.

3. Turn on the transmitter by sliding the power

switch (closest to the battery compartment)

forward to the ON position (toward the windscreen).

The red battery condition light should flash once

and then go out. If the red light stays on or illumi-

nates during a performance, the battery should be

replaced immediately. The green light will stay lit

when the handheld transmitter is on.

NOTE: Remember to turn the transmitter OFF

when not in use. This will conserve battery life.

4. Verify reception. When the transmitter is turned

on, the yellow “Tx On” light, located on the front

panel of the receiver, will illuminate, indicating that

the receiver is picking up the signal. If this does

not happen, make sure that the transmitter and

receiver are set to the same channels.

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5. Connect the audio source. If using a lava-

lier or headworn microphone, insert the con-

nector on the end of the mic wire, into the con-

nector on the Bodypack. If using a lavalier

mic, use the clip to attach the mic to the users

clothing. If using the headworn mic, place the

headset on the user’s head, positioning the

mic at the corner of their mouth. If using a gui-

tar system, connect the ¹/4” plug into the instru-

ment.

3.3 Bodypack Transmitter Setup

1. Insert battery. Open the hinged battery

compartment by placing your thumb or finger

on the indent labeled OPEN on the battery

door and pushing down, see Figure 6. When

inserting the battery, pay attention to the polari-

ty (+/-) and insert the terminals into the battery

compartment first. Close the battery door by

sliding the door shut.

NOTE: Keep the audio muted while plug-

ging in and adjusting the microphone or

source. Placement of lavalier and headworn

microphones will noticeably change the sound

quality, so some testing with the user is neces-

sary. An important point to remember, the

closer to the sound source, the stronger or

louder the signal.

Figure 5.

6. Unmute the audio, by sliding the large

AUDIO switch located on the Bodypack, to

the ON position. Speak or sing into the

microphone and you should hear your voice

through the PA / sound system.

7. Listen carefully to the audio and be sensi-

2. Set the transmitter channel to match the

channel setting on the receiver. The channel

switch on the bodypack is located just under-

neath the battery door, and to the right of the

indent labeled OPEN. Note the channel num-

ber label (0-9) surrounding the opening. The

Bodypack channel must be set to the same

number as the receiver channel, which is dis-

played on the receiver front panel. The chan-

nel setting is determined by which number the

arrowed slot is pointing to. Use a small screw-

driver (supplied) to change the channel setting.

tive of overload distortion and low gain.

8. Adjust the transmit gain if necessary.

Gently insert the provided screwdriver or

other 3/32-in. (2.5 mm) screwdriver into the

gain adjustment located at the top edge of

the battery compartment under the door. The

door has to be opened but not swung upward

to make adjustments. Turn lightly until the

screwdriver tip drops into the slot on the level

control. Gently turn the control counterclock-

wise until the control stops (the audio output

is attenuated but not “off”). Slowly turn the

audio level control clockwise while listening

to audio; if the audio becomes distorted, turn

the mic level control counter-clockwise about

1/8 turn.

3. Turn on the transmitter by sliding the power

switch to its on position. Check the condition of

the battery by watching the light below the

power switch. The red battery light should flash

once and then go out. If the light stays on, the

battery is weak and should be replaced.

9. Check reception by observing that the yel-

low Tx On light is lit on the receiver’s front

panel.

4. Verify that the transmitter is sending. Observe

that the yellow Tx On light on the front panel of

the receiver is lit, an indication that the receiv-

er is picking up the signal from the transmitter.

10. Clip the bodypack to the user’s belt, pock-

et, or guitar strap. The bodypack can be

positioned horizontally or vertically by moving

the belt clip attachment. This is done by

removing the belt clip attachment screw,

rotating the clip to the desired position, and

replacing the screw.

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Figure 6.

4 Guidelines/Recommendations for best performance

Compatibility

The receiver and transmitter must be set to the same channel

to operate together.

Using Multiple Wireless Systems

If two or more N/DYM Wireless and/or other VHF/UHF wire-

less systems are being used in the same location, proper fre-

quency coordination is necessary to avoid interference. The

following N/DYM System channels will work together:

Contact your dealer or Electro-Voice for assistance, if you are

planning to add more wireless systems to be operated simul-

taneously in the same location.

Channels 0,1,2,3, & 4 or Channel 5,6,7,8, & 9

Multiple System Setup & ClearScan^TM

ClearScan^TMis most useful for finding operating fre-

quencies for situations where no more than 2 systems

will be used simultaneously. When setting up more

than 2 systems, use ClearScan^TMto choose the first

channel of operation. Set up subsequent systems fol-

lowing the channel groupings listed above in the “Using

Mulitple Wireless Systems” section.

Potential Sources of Interference

There are many potential sources of interference for your

wireless system. Any electronic product that contains digital

circuitry including digital signal processors (reverb/multi-

effects units), electronic keyboards, digital lighting controllers,

CD players and computers, all emit RF energy that can

adversely affect the performance of your wireless system. It

is always best to place your receiver as far away from these

devices as possible to minimize this potential source of prob-

lems.

Battery Recommendations

Fresh 9-volt alkaline batteries from a quality

manufacturer will yield the best performance from

your N/DYM transmitters. Rechargeable 8.4-volt

Ni-cad batteries can be used, but will yield much shorter

operational time.

the light does not flash or stays lit continuously, the battery is

weak or dead. If the light comes on during use, the battery is

weakening and should be replaced as soon as possible.

If sound quality degrades during use, it may be the result of a

weakening battery.

When the transmitter switch is turned on, the red

battery light will flash once if the battery is good. If

Receiver and Antenna Placement

Do not place the receiver near a large metal

object or surface.

receiver so that the transmitter is within site of the receiver.

When using multiple systems, do not allow antennas to cross

or touch each other.

Locate the receiver as close as possible to the area where

the Transmitter user will be working. Ideally, position the

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5 Troubleshooting Guide

Problem

Possible Causes

Solutions

No audio & no lights

on receiver

Receiver is off

Make sure that power supply is

properly connected and providing

power to the receiver.

No audio & no Tx ON

light on receiver

Transmitter is off.

Turn on transmitter power switch.

Insert fresh battery in transmitter.

Clean contacts.

No ( or dead ) battery in

transmitter.

Faulty battery contacts in

transmitter.

No audio

Transmitter audio switch

is off (signal is muted).

Turn on transmitter audio switch.

Connect, repair, or replace cable.

Receiver audio cable is damaged

or disconnected.

Gain not sufficient on mixer/

preamp/amp input.

Increase mixer/preamp/amplifier

gain setting.

Low audio signal.

Gain set too low (or muted) on

mixer/preamp/amplifier.

Increase gain setting on mixer/

preamp/amplifier.

Receiver audio too low (1/4” output).

Transmitter audio level too low.

Increase receiver audio volume setting.

Increase transmitter audio gain setting.

Decrease transmitter audio gain setting.

Distorted audio signal.

Transmitter audio level too high

(overloading transmitter circuit)

Receiver audio set too high

(1/4” output).

Decrease receiver audio level setting.

Battery level low in transmitter.

Insert fresh battery in transmitter.

Interference

Another wireless product in the

immediate area, operating on the

same frequency, or on a frequency

that mixes with another RF signal

(such as a TV broadcast transmitter).

Change operating frequency. If

interference is weak, keep transmitter

on at all times (to override interfering

signal) whenever receiver is on.

Receiver placed too close to a digital

signal processor or similar device.

Move receiver to a different location.

Strong electromagnetic field from

stage lighting or other source near

the transmitter or receiver, which may

be producing RF noise on or near the

operating frequency.

Change operating frequency. Repair or

remove source of interference. Move

receiver to a different location.

Short range or drop-outs.

RF reflective metal obstacles

between transmitter & receiver.

Move the obstacles, or reposition the

receiver.

Poorly oriented beltpack antenna.

Faulty receiving antenna system.

Reorient bodypack so that antenna is

positioned vertical (up and down) and

facing receiver, if possible.

Reposition antennas or receiver.

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6 N/DYM Wireless Series System Technical Specifications

UHF Receivers: NRU and NRU-G Receivers

Receiver Type

Synthesized PLL

Between 800 - 814 MHz

Frequency Range (RF)

Number of Selectable Channels

Diversity

True Diversity with Secure-Phase^TM

RF Sensitivity

< .8 uV for 12 dB SINAD

FCC Data

Approved under part 15

Audio Output,

Frequency Response

Audio Output, Balanced (XLR)

Audio Output, Unbalanced (¹/4")

Distortion

50 – 15 kHz +/- 2 dB

-20 dBV (600 Ohm Load)

adjustable 8 mv to 0.775V RMS (100 K ohm load)

Less than 0.5%

>94 dB

Signal-to-Noise Ratio

Dynamic Range

100 dB

UHF Transmitters: NBPU, NBPU-G, NHTU-N1, NHTU-N2

RF Frequency Range

Between 800 - 814 MHz

Number of Selectable Channels

Radiated RF Output

10-15 mW typical

Microphone Element NHTU-N1 handheld

Microphone Element NHTU-N2 handheld

Standard Bodypack Microphones

Lavalier: (NRU-L10 system)

(NRU-L20 system)

EV N/D 167 cardioid N/DYM dynamic

EV N/D 267a cardioid N/DYM dynamic

EV OLM10 omni-directional condenser

EV ULM20 cardioid condenser

EV HM2 cardioid condenser

Headset: (NRU-H1 system)

TA4F Connector Wiring:

Pin 1: Ground; Pin 2: Mic Input;

Pin 3: +5 volt bias; Pin 4: +5 volt bias fed

through a 3 K ohm resistor for 2-wire electrets

Audio Gain Adjustment Range

Battery Life

40 dB

8 – 10 hours with 9-Volt alkaline

flexible external ¹/4 wave

internal ¹/2 wave

Bodypack Antenna

Handheld Mic Antenna

Size (Handheld transmitter)

Size (Bodypack transmitter) HxWxD

26 cm (10.25 in) long

4.5 in x 2.6 in x 1.25 in (no antenna)

114 x 66 x 32 mm

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7 Certifications

CERTIFICATIONS

NRU, NRSCU, Certified to ETS 300 445, Conforms to European Union directives, eligible to bear CE marking.

NHTU, NBPU, Certified to I-ETS 300 442 and ETS 300 445, Conforms to European Union directives, eligible to

bear CE marking.

Licensing of Electro-Voice equipment is the user’s responsibility and license eligibility depends on the

user’s classification, and frequency selected. Changes or modifications made by the user could void the

user’s authority to operate the equipment.

8. Accessories & Parts

Order #:

450131

OLM10

450563

300059000

ULM20

Description

Plastic clip for bodypack

Omni lavalier mic w/windscreen and clip

Windscreen for OLM10

Clip for OLM10

Unidirectional lavalier mic w/ windscreen and clip

ULM20 windscreen

879155

879156

HM2

ULM20 clip

Unidirectional headset condenser mic

Spring-adjusted mic stand adapter

Rack-mount kit - Single

450124

71081001

71081002

730139

730140

730103

Rack-mount kit - Double

120-volt power supply

230-volt power supply

(US/Canada type)

(EURO type)

(UK type)

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9. Service/Warranty

Factory Service

If factory service is required, ship the unit prepaid in its original carton to:

Telex EVI Audio GmbH

Hirschberger Ring 45

D-94315 Straubing

Telephone: +49 (0) 9421 706 0

Fax: +49 (0) 9421 706 350

Enclose a note describing the problem along with any other pertinent information.

Warranty (Limited)

Electro-Voice products are guaranteed against malfunction due to defects in materials or workmanship for a speci-

fied period, as noted in the individual product-line statement(s) below, or in the individual product data sheet or

owner’s manual, beginning with the date of original purchase. If such malfunction occurs during the specified peri-

od, the product will be repaired or replaced (at our option) without charge. The product will be returned to the cus-

tomer prepaid.

Exclusions and Limitations: The Limited Warranty does not apply to: (a) exterior finish or appearance;

(b) certain specific described in the individual product-line statement(s) below, or in the individual product data

sheet or owner’s manual; (c) malfunction resulting from use or operation of the product other than as specified

in the product data sheet or owner’s manual; (d) malfunction resulting from misuse or abuse of the product; or

(e) malfunction occurring at any time after repairs have been made to the product by anyone other than

Electro-Voice or any of its authorized service representatives.

Obtaining Warranty Service: To obtain warranty service, the customer must deliver the product, prepaid, to

Electro-Voice or any of its authorized service representatives together with proof of purchase of the product in the

form of a bill of sale or receipted invoice. A list of authorized service representatives is available from

Electro-Voice.

Incidental and Consequential Damages Excluded: Product repair or replacement and return to the customer

are the only remedies provided to the customer. Electro-Voice shall not be liable for any incidental or consequen-

tial damages including, without limitation, injury to persons or property or loss of use.

Electro-Voice Wireless Systems are guaranteed against malfunction due to defects in materials or workmanship

for a period of one (1) year from the date of original purchase. The Limited Warranty does not extend to cables or

cable connectors. Additional details are included in the Uniform Limited Warranty Statement.

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Service/Warranty – North America

Factory Service

If factory service is required, ship the unit prepaid in its original carton to:

EV Audio Service

c/o Telex Communications

8601 E. Cornhusker Highway

Tel: 402/467-5321

Fax: 402/467-3279