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Electro-Voice MS3000 User Manual

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MS3000 OWNERS MANUAL

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MS3000 SERIES OWNERS MANUAL
MS3000 UHF Diversity Wireless System

Features
• Well-designed companding and audio circuitry

deliver “hard-wired” sound quality

• Excellent 104 dB signal-to-noise ratio
• Metal chassis ½-rack space receiver with TNC

antenna connectors

• Metering for audio level, rf and diversity channel
• Externally-adjustable squelch control
• Balanced 3-pin XLR-type and unbalanced ¼-inch

audio outputs

• Choice of transmitters including rugged bodypack

with TA4F connector for lavalier and headset micro-

phones. Professional handheld transmitters with

choice of Electro-Voice N/D767 dynamic or BK-1

condenser transducers.

DESCRIPTION

The Electro-Voice MS3000 is a professional quality

UHF diversity wireless system that operates within

the frequency range of 690 to 725 MHz (TV chan-

nels 50 – 55) on single custom-tuned frequencies.

MS3000 Systems combine the MR3000 receiver

with a choice of handheld and bodypack transmit-

ters that allow multiple ways to achieve wireless

freedom. The wide range of frequencies permit use

of multiple systems simultaneously (the exact num-

ber is dependent on local conditions). The specially

designed compander circuitry provides wide dy-

namic range with clean, accurate transient re-

sponse. MR3000 receivers have ½-rack space

metal chassis for ruggedness and reliability. A

host of accessories are available for operational

and installation flexibility.

SECURE-PHASE

tm

DIVERSITY

The MR3000 receiver utilizes patented Secure-

Phase

tm

diversity circuitry that ensures the stron-

gest, cleanest signal possible. Unlike other diversity

schemes that switch antennas or signal, Secure-

Phase

tm

utilizes the signal from both antennas at all

times to increase signal strength, minimize dropouts

and lower the potential for interference.
If the signal from the transmitter changes phase or

polarity (a common cause of dropouts), the circuit

adjusts the phase angle between the two antennas

receiving circuits to prevent cancellation. The two

diversity lights on the front panel indicate the status

of this circuit.
ANTENNAS
The MR3000’s ½-rack space receiver has specially

tuned quarter-wave antennas with TNC-type an-

tenna connectors. These connectors are electrically

and mechanically superior to the commonly used

BNC connectors and are located on the rear panel

of the MR3000. TNC connectors are widely used on

cellular communications equipment and are readily

available.
Two antennas are supplied with the unit for normal use

and optional accessory kits can be used to rack mount

or remote-mount the antennas. Other accessories

such as multi-couplers, ½-wave antennas and log

periodic directional antennas are also available to

meet specific installation and use requirements.

HANDHELD TRANSMITTER

• Choice of Electro-Voice N/D767 (MSHD) N/DYM

dynamic or Electro-Voice BK-1 condenser (MSHC)

transducers.

• Special “soft-touch” finish and ergonomically

designed handle makes holding comfortable

and secure.

• Separate LEDs for power on and battery status

for easy monitoring of operational modes.

• Separate power and audio mute switches for

operational flexibility.

• Wide-range gain control allows approximately 40

dB of adjustment.

• Up to 10 hours of operation on a 9-volt alkaline

battery.

BODYPACK TRANSMITTER

• UHF bodypack with TA4F connector allows the

user the freedom of microphone selection with

easy interchangeability. Available microphones

include the Electro-Voice ULM20 cardioid con-

denser lavalier microphone and the HM2 headset

microphone. The TA4F connector allows connec-

tion of any dynamic or condenser microphone

that can be biased with 5 volts DC phantom.

• Separate on/off and toggle mute switches for

operational flexibility

• LED battery condition indicator gives quick

indication of battery strength

• Up to 10 hours of operation on a 9-volt alkaline

battery

MR3000 FRONT PANEL FEATURES DISPLAYS
The MR3000 has a number of front panel indicators

to make setup and operation easier.
1. A five-segment LED meter shows audio level

and is useful for setting the transmitter’s gain

control.

2. A five-segment LED RF meter shows the strength

of the incoming signal from the transmitter

3. Two LEDs indicate the action of the Secure-

Phase

tm

diversity circuitry.