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Summary of Contents for Lectrosonics R185
- Page 1 R185 VHF RECEIVER OPERATING INSTRUCTIONS and trouble-shooting guide LECTROSONICS, INC. Rio Rancho, NM...
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Page 3: Table Of Contents
RETURNING UNITS FOR REPAIR ......R185 SPECIFICATIONS AND FEATURES ......10... -
Page 4: General Technical Description
GENERAL TECHNICAL DESCRIPTION The R185 receiver is comprised of five functional subsystems: the RF front-end, the double balanced mixer/local oscillator, the first IF filter, the second IF filter and demodulator, the compandor and audio output section. ACTIVE FILTERS SEPARATE 6 SECTION... -
Page 5: Receiver Front Panel
XLR jack will be 12 dB below 100mV when the signal is at full modulation. These markings should not be confused with absolute level references such as "-20 dBm", "-20 dBu", etc. LECTROSONICS -20 -15 -12dB dB AUDIO LEVEL AUDIO MUTE OUTPUT POWER ATTENUATOR Figure 3 - R185 Front Panel... -
Page 6: Receiver Rear Panel
(Switchcraft S-760 power plug). The center pin is positive. (+). If the external DC source is of the wrong polarity, the R185 receiver will not operate. The unit is equipped with a "reverse polarity diode" at the DC power input which prevents damage in the case of improper polarity. -
Page 7: Antenna Use And Placement
The high sensitivity of the R185 minimizes dropouts in multi-path environments, since it will continue to operate with a usable audio signal to noise ratio even with weak RF signal inputs. -
Page 8: Operating Instructions
OPERATING INSTRUCTIONS 1) Connect the power supply. 2) Attach the antenna. 3) Connect the audio cable from the sound system or recorder to the receiver. 4) Set the front panel switch to the "MUTE" position. Check to see that the red POWER LED lights up (the left- most LED in the 9-LED display). -
Page 9: Troubleshooting
Telescoping 1/4 wave whip on a swiveling BNC connector. A-200 Remote dipole antenna with aluminum mounting block; supplied with one built-in telescoping whip and one detachable telescoping whip. RMP-3 19" rack mounting kit for one to three R185 receivers. Each receiver requires a separate antenna and power supply. -
Page 10: Service And Repair
There are no adjustments inside that will make a malfunctioning unit start working. LECTROSONICS service department is equipped and staffed to quickly repair your equipment. In-warranty repairs are made at no charge in accordance with the terms of the warranty. Out of warranty repairs are charged at a modest flat rate plus parts and shipping. -
Page 11: R185 Specifications And Features
R185 SPECIFICATIONS AND FEATURES Operating frequencies: 150 to 216 MHz, crystal controlled Sensitivity: Better than 0.5uV for 20 dB quieting without compandor; 1.7uV for 50dB S/N ratio with compandor Signal/noise ratio: 96 dB (A-weighted), typical overall system Squelch quieting: Greater than 110 dB AM rejection: -60 dB (10uV to 0.1 Volts) -
Page 12: Warranty
This warranty applies only to items returned to us, shipping costs prepaid, within one year from the date of purchase. This warranty gives you specific legal rights. You may have additional legal rights which vary from state to state. LECTROSONICS, INC. 581 LASER ROAD RIO RANCHO, NM 87124 USA August 17, 1996...
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