background image

DA4 

DISTRIBUTION AMPLIFIER MODULE 

OPERATING INSTRUCTIONS 

and trouble-shooting guide 

LECTROSONICS, INC. 

Rio Rancho, NM 

Содержание DA4

Страница 1: ...DA4 DISTRIBUTION AMPLIFIER MODULE OPERATING INSTRUCTIONS and trouble shooting guide LECTROSONICS INC Rio Rancho NM ...

Страница 2: ...e level control The DA4 can supply up to 20dB of gain so small signals can be boosted to avoid noise contamination on long cable runs TABLE OF CONTENTS INTRODUCTION 1 GENERAL TECHNICAL DESCRIPTION 2 INSTALLATION 2 FRONT PANEL DESCRIPTION 3 REAR PANEL DESCRIPTION 3 OPERATING INSTRUCTIONS 3 SERVICE AND REPAIR 4 RETURNING UNITS FOR REPAIR 4 SPECIFICATIONS 5 WARRANTY Back cover 1 ...

Страница 3: ...ROUGH OUTPUT RFI FILTER OPTIONAL OUTPUT TRANSFORMER OPTIONAL OUTPUT TRANSFORMER 10 dB VOLTAGE GAIN BALANCED DRIVER OPTIONAL OUTPUT TRANSFORMER 10 dB VOLTAGE GAIN BALANCED DRIVER OPTIONAL OUTPUT TRANSFORMER 10 dB VOLTAGE GAIN BALANCED DRIVER BALANCED OUTPUT 1 BALANCED OUTPUT 1 BALANCED OUTPUT 1 BALANCED OUTPUT 1 Figure 1 DA4 BLOCK DIAGRAM INSTALLATION The DA4 module is installed from the rear of th...

Страница 4: ...onnected to the signal or hot conductor of the input signal and pins 1 and 3 should be connected together and also connected to the ground conductor of the input signal Note that this will make the Through Output unbalanced as well With an input signal properly connected adjust the Output level controls for the desired output level The output impedance of the drivers is low 40 ohms balanced to pro...

Страница 5: ...n 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 will follow the steps below A DO NOT return equipment to the factory for repair without first contacting us by letter or by phone We need to know the nature of the problem the model number and the serial number of the equipme...

Страница 6: ...Maximum Output Level 20dBv for loads greater the 600 ohms Input Impedance 20K ohms balanced or unbalanced Input Type XLR electronically balanced RF filtered Pin 2 is input Pin 3 is input Pin 1 is gnd Output Impedance 40 ohms balanced 20 ohms unbalanced Output Type XLR electronically balanced and floating RF filtered Pin 2 is input Pin 3 is input Pin 1 is gnd 5 ...

Страница 7: ...elop we will at our option repair or replace any defective parts without charge for either parts or labor If we cannot correct the defect in your equipment we will replace it at no charge with a similar new item We will pay for the cost of returning your merchandise to you This warranty applies only to items returned to us shipping costs prepaid within one year from the date of purchase This warra...

Отзывы: