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Summary of Contents for Lectrosonics CR187
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Page 1: Operating Instructions
CR187 COMPACT RECEIVER OPERATING INSTRUCTIONS and trouble-shooting guide • Wide Range Limiting • Surface Mount Technology LECTROSONICS, INC. Rio Rancho, NM... -
Page 2: Table Of Contents
Hundreds of conversations with dealers and end-users developed the final parameters for the design. The CR187 receiver is a fixed frequency design that eliminates the need to “tune” or adjust the receiver every time it is used. This is the preferred design for a number of reasons, among them simplicity of operation, no adjustments in “high pressure”... -
Page 3: General Technical Description
This means that the headphone output level is dependent not only on the headphone volume control, but also the microphone level control. The CR187 is a negative ground device. Do not connect this receiver to a positive ground device through the audio cabling. Damage to either device could result. -
Page 4: Controls And Functions
CONTROLS AND FUNCTIONS RECEIVER FRONT PANEL Adjust headset volume with the trimpot on the side. LECTROSONICS CR187 BATT MODULATION OUTPUT POWER MODULATION LEDs Indicate the modulation (audio level) of the incoming signal, and can be used for proper adjustment of the transmitter’s “MIC LEVEL”... - Page 5 “open”. This will allow considerable noise to pass through the audio circuits if the associated transmitter is off, or if other circuits of the CR187 stop operating because of the low voltage condition. In addition, three out of the four LEDs on the front panel will light (the exception being the POWER LED).
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Page 6: Receiver Rear Panel
12 volt DC sources using the correct plug (Switchcraft S-760 power plug). A diode bridge is used in the external power input, so that the CR187 will operate properly from either polarity. The CR187 is a negative ground device. -
Page 7: Antenna Use And Placement
Compact Receiver ANTENNA USE AND PLACEMENT Connect the antenna to the front panel jack. Position the antenna so that it is not within 3 or 4 feet of large metal surfaces. If this is not possible, try to position the antenna so that it is as far away from the metal surface as is practical. -
Page 8: Operating Instructions
OPERATING INSTRUCTIONS 1) Connect the power cord or install the battery. (The CR187 is a negative ground device. Do not connect this receiver to a positive ground device through the audio cabling. Damage to either device could result.) 2) Attach and extend the antenna. -
Page 9: Troubleshooting
2) Audio cable disconnected 3) Recorder or sound system off, or not properly adjusted. REPLACEMENT PARTS AND ACCESSORIES Part No. Description CH-12 110 Volt AC adapter for CR187 receiver A-185 Coax Remote, folded-dipole antenna with coaxial cable 35753 System pouch A-195RA Helical, flexible (“rubber duckie”) antenna with a 9inch whip... -
Page 10: Specifications And Features
SPECIFICATIONS AND FEATURES Operating Frequencies: 150MHz to 216MHz, crystal controlled Sensitivity: Better than 0.6uV for 20dB quieting without compandor; 1.9uV for 50dB S/N ratio with compandor Signal/Noise Ratio: 102dB A weighted Squelch Quieting: greater than 100dB AM Rejection: -60dB (10uV to 0.1 Volts) Modulation Acceptance: ±15kHz Image and Spurious Rejection:... -
Page 11: 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 12: Warranty
This warranty does not apply to used or demonstrator equipment. Should any defect develop, Lectrosonics, Inc. will, at our option, repair or replace any defective parts without charge for either parts or labor. If Lectrosonics, Inc. cannot correct the defect in your equipment, it will be replaced at no charge with a similar new item.
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