Lectrosonics DR175 - Manual (Page 2)

INTRODUCTION
Thank you for selecting the Lectrosonics system.
The DR175 represents over 70 years of combined experience in the design of RF
and audio devices and sets new standards for RF performance and flexibility. This
receiver utilizes a “maximal ratio combining” technique, providing a very effective
type of diversity reception. This is the first high performance receiver on the market
to utilize this technique to combine the outputs of two separate receivers without
hard-switching. The result is seamless audio reproduction without dropouts and
superb, noise-free operation, even in weak overall signal conditions.
This is a “true diversity” receiver in the purest sense. The audio outputs of two
separate receivers are mixed via a non-switching circuit that blends the two audio
signals together in an optimum ratio. The ratio of this mixture is controlled by a circuit
that monitors the comparative signal to noise ratios in both receivers and then “pans”
back and forth to regulate the mixture. The receiver with the least high frequency
noise is favored in the resultant blend.
The DR175 receiver was designed for professional users who demand outstanding
performance and flexibility. It is compatible with all Lectrosonics high band transmitters.
TABLE OF CONTENTS
INTRODUCTION .................................................................................................. 2
FRONT PANEL CONTROLS AND FUNCTIONS ................................................ 3
REAR PANEL CONTROLS AND FUNCTIONS .................................................. 3
ANTENNA USE AND PLACEMENT ................................................................... 4
OPERATING INSTRUCTIONS ............................................................................ 5
INDICATOR QUICK REFERENCE ...................................................................... 5
TROUBLESHOOTING ......................................................................................... 6
DR175 REPLACEMENT PARTS and ACCESSORIES ...................................... 6
SPECIFICATIONS AND FEATURES ................................................................... 7
SERVICE AND REPAIR ....................................................................................... 8
RETURNING UNITS FOR REPAIR ..................................................................... 8
WARRANTY ......................................................................................... Back cover
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