background image

3

Frequency Agile UHF Belt-Pack Transmitter

Rio Rancho, NM – USA

INTRODUCTION

Thank you for selecting the Lectrosonics UM200C frequency agile, belt-pack trans-
mitter. The UM200C combines over 80 years of engineering experience with the very
latest components, in a design that addresses the most demanding professional
applications.

The design of the UM200C was the direct result of numerous conversations with
users, staging and touring companies and dealers across the US. The specific
concerns and needs brought up in these conversations led directly to the develop-
ment of the operational features offered on the UM200C. Two hundred fifty six
frequencies are user selectable in 100kHz steps to alleviate interference problems in
travelling venues, and the low frequency roll-off is user adjustable to adapt to varying
acoustic environments and preferences.

The UM200C is a rugged, machined aluminum package with a removable, spring
loaded belt clip. The input section provides a correct input tap for virtually any
microphone or line level audio source. 5 Volts of bias voltage is available to power
electret mics with either positive or negative bias. Level indicating LEDs are provided
on the control panel to make level settings quick and accurate, without having to
view the receiver.  The battery compartment accepts any 9 Volt alkaline battery and
makes a positive connection via self-adjusting contacts. The antenna is a detach-
able, locking 1/4 wavelength flexible bronze cable that connects to a 50 Ohm SMA
port on the transmitter.

Only the UM200C transmitter is covered in this manual. Companion receivers are
covered in separate manuals.  The UM200C will operate with any 200 Series Lec-
trosonics receiver in the same frequency group.

Содержание UM 200C

Страница 1: ...UM200C FREQUENCY AGILE UHF BELT PACK TRANSMITTER LECTROSONICS INC Rio Rancho NM www lectrosonics com OPERATING INSTRUCTIONS...

Страница 2: ...GENERAL TECHNICAL DESCRIPTION 4 CONTROLS AND FUNCTIONS 6 BATTERY INSTALLATION 8 OPERATING INSTRUCTIONS 8 OPERATING NOTES 9 ADJUSTING THE TRANSMITTER FREQUENCY 9 MICROPHONE CORD TERMINATION 10 5 PIN I...

Страница 3: ...y roll off is user adjustable to adapt to varying acoustic environments and preferences The UM200C is a rugged machined aluminum package with a removable spring loaded belt clip The input section prov...

Страница 4: ...ion will be low but high frequency transients will then be distorted The 200 system introduces an entirely new approach to solving this basic problem called dual band companding There are actually two...

Страница 5: ...ctor in the receiver so that it does not influence the compandor or various gain stages The basic benefit of the pilot tone squelch system is that the receiver will remain muted until it receives the...

Страница 6: ...to light the battery should be replaced The ON lamp is connected to a precision battery test circuit that continuously monitors battery voltage The LED is at full brightness with a new 9 Volt alkaline...

Страница 7: ...frequency range of the transmitter It is removable via an SMA connector The SMA connector is a 50 Ohm RF port which can also be connected directly to test equipment Replacement antennas are available...

Страница 8: ...ction of the arrow as shown in the drawing Only firm sliding pressure is needed to open and close the battery door Swing the door open and take note of the polarity marked inside showing the location...

Страница 9: ...full deviation The 0 LED turns on at full deviation and indicates that the input shunt compressor is operating The input limiter will handle peaks over 30dB above full modulation regardless of the gai...

Страница 10: ...tripping Instructions Caution Do not allow the shield wire to touch any metal part of the connector shell The shield wire is the antenna on VHF models and poor operating range will result Shield Wire...

Страница 11: ...cessary to install a chip capacitor in the mic capsule or connector to block the RF from entering the electret capsule This modification is shown on the next page FB 10k 1k 5 100 4 3 2 1 5V Mic Bias T...

Страница 12: ...ormal hookup for line level signals is Signal Hot to pin 5 Signal Gnd to pin 1 pin 4 jumped to pin 1 and pin 3 jumped to pin 1 This gives a 40dB attenuator that allows signal levels much higher than 3...

Страница 13: ...1 Receiver output level set too low 2 Receiver output is disconnected cable is defective or mis wired 3 Sound system or recorder input is turned down DISTORTED SOUND 1 Transmitter gain audio level is...

Страница 14: ...ate modulation level 12dB below limiting and at the onset of limiting Low frequency roll off adjustment 18dB octave 35Hz to 150Hz Controls 2 position OFF ON slide switch for noiseless turn on turn off...

Страница 15: ...there is a charge for an exact quotation We will be happy to quote approximate charges by phone for out of warranty repairs RETURNING UNITS FOR REPAIR You will save yourself time and trouble if you wi...

Страница 16: ...nc or an authorized dealer shipping costs prepaid within one year from the date of purchase This Limited Warranty is governed by the laws of the State of New Mexico It states the entire liablility of...

Отзывы: