Related Manuals for Lectronics FREEDOMIKE CR170
Summary of Contents for Lectronics FREEDOMIKE CR170
- Page 1 CR170 VHF MINIATURE RECEIVER OPERATING INSTRUCTIONS and trouble-shooting guide LECTROSONICS, INC. Rio Rancho, NM...
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Page 2: Table Of Contents
Thank you for selecting the Lectrosonics FREEDOMIKE system. The FREEDOMIKE CR170 receiver represents over 80 years of combined experience in the design of RF and audio devices and sets new standards for RF performance and flexibility. The CR170 receiver design is the result of surveying the needs of professional video producers, audio visual coordinators, and many others in the industry. -
Page 3: General Technical Description
GENERAL TECHNICAL DESCRIPTION The CR170 receiver employs a two stage, crystal controlled oscillator, individually trimmed to the exact operating frequency, to ensure that the frequency will not drift. This eliminates the need for "tuning" adjustments each time the receiver is used. Numerous frequencies are available from 150 MHz through 216 MHz. High Q toroidal filters in the RF and IF stages reject interfering adjacent signals and provide over 100 dB of image rejection. -
Page 4: Receiver Front Panel
RECEIVER FRONT PANEL OFF/ON A slide switch which turns the power on and off. POWER An LED that glows when the OFF/ON switch is in the "ON" position and the battery is good, or when the AC adapter or external power source is properly connected. If this lamp is very dim or does not light up when the switch is turned on, check the external power source or replace the battery. -
Page 5: Receiver Rear Panel
RECEIVER REAR PANEL ANTENNA CONNECTOR A standard BNC connector compatible with the supplied A-185BNC telescoping antenna. 12 VDC INPUT For powering the receiver with the supplied CH-12 AC adapter from a 110V AC source. The receiver may also be powered from an external 12 Volt DC source using a Switchcraft S-760 power plug. The center pin on the receiver jack is positive (+). -
Page 6: Antenna Use And Placement
ANTENNA USE AND PLACEMENT Connect the antenna to the rear panel jack. Extend the antenna fully. Position the antenna so that it is not touching or within 3 or 4 feet of large metal surfaces. It is also good practice to position the receiver so that there is a direct "line of sight"... -
Page 7: Operating Instructions
OPERATING INSTRUCTIONS This sections covers the initial adjustments to the companion transmitter and CR170 that must be made before the system is placed into operation. The step-by-step procedures are listed in the order in which they should be performed: Install the battery in the receiver or connect the power cord if you are going to use external power. If using an external 12 Volt DC source, be sure the center pin on the plug is positive (+). -
Page 8: Troubleshooting Guide
TROUBLESHOOTING GUIDE This guide covers only the CR170 receiver. Transmitters are covered in separate manuals. SYMPTOM POSSIBLE CAUSE NO POWER LAMP 1) Receiver switch in "OFF" position 2) Dead or weak battery 3) AC wall outlet inoperative 4) CH-12 AC adapter disconnected NO RF LAMP 1) Receiver antenna not connected 2) Transmitter battery dead... -
Page 9: Service And Repair
SERVICE AND REPAIR If your system malfunctions, you should attempt to correct or isolate the trouble before concluding that the equipment needs repair. Make sure you have followed the setup procedure and operating instructions. Check out the inter-connecting cords and then go through the TROUBLE SHOOTING section in the manual We strongly recommend that you do not try to repair the equipment yourself and do not have the local repair shop attempt anything other than the simplest repair. -
Page 10: Specifications And Features
SPECIFICATIONS AND FEATURES Operating frequencies: 150 to 216 MHz crystal controlled Sensitivity: 1.0uV for 20dB SINAD 2.0uV for 50dB S/N ratio Signal/noise ratio: 95dB flat; 100dB A-weighted Squelch quieting: greater than 100dB AM Rejection: -40 dB (10uV to 0.1 Volts) ±15kHz Modulation acceptance: Image and spurious rejection:... -
Page 11: Warranty
LIMITED ONE YEAR WARRANTY The equipment is warranted for one year from date of purchase against defects in materials or workmanship provided it was purchased from an authorized dealer. This warranty does not cover equipment which has been abused or damaged by careless handling or shipping.
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