SAFETY NOTES Excessive sound levels can cause permanent hearing damage. 1. Always adjust the volume to the lowest level before listening to un known transmissions. 2. Use the lowest reasonable level consistent with hearing safety. 3. Don’t use high sound levels in the earphone to overcome high ambient sound levels.
IFB Receiver INTRODUCTION Thank you for selecting the Lectrosonics frequency agile, R1 IFB Receiver. The R1 is the result of extensive engineering experience with the very latest components. The design addresses the most demanding professional applications. The Lectrosonics R1 Receiver along with the companion T1 transmitter allow on-air talent to monitor program audio, and to receive cues from directors and other production person...
GENERAL TECHNICAL DESCRIPTION The IFB R1 Receiver is comprised of a number of functional subsystems as shown in Fig 1, Control Panel and Fig 2, Receiver Block Diagram. GENERAL FEATURES The frequency agile IFB R1 FM Receiver is designed to operate with the Lectrosonics IFB T1 Transmitter and features microprocessor control of 256 frequencies of operation within each frequency block.
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Detector Audio Level. 100n Control 2.5vdc LEVEL MONO (Open) BINAURAL (Closed) Pilot Pilot Tone Tone Detector Mute Frequency Synthesizer On/Off Regulator Battery Disc RSSI Memory Controller Control Panel LED Figure 3 - R1 Block Diagram Rio Rancho, NM – USA...
RECEIVER OPERATING INSTRUCTIONS Before operating a receiver, one or more IFB T1 transmitters must be placed in XMIT mode, with each transmitter set to the desired frequency and connected to a proper antenna, audio source, and power source. The transmitter frequency block must be the same as the receiver frequency block as marked on each unit.
BATTERY INSTRUCTIONS The battery you use in the R1 receiver should be a 9 Volt alkaline or lithium, available almost everywhere. An alkaline battery will provide up to 8 hours of operation and a lithium battery will provide up to 20 hours of operation. Carbon zinc batteries, even if marked “heavy duty”...
TROUBLESHOOTING SYMPTOM POSSIBLE CAUSE LED NOT LIT • Battery not installed or depleted • Power switch not on. NO SOUND IN HEADPHONE • AUDIO LEVEL turned all the way down. • Headphone plug not inserted fully. • Defective headphone • Transmitter not operating. (See separate transmitter manual.) •...
IFB Receiver SPECIFICATIONS AND FEATURES Operating frequencies: 537.6 MHz to 608, 614 to 793.5 MHz (in 10 blocks) Number of frequencies: 256 per block (using 26 MHz wide band) Channel spacing: 100 kHz Frequency control: Crystal Controlled Phase Locked Loop Sensitivity: 1 uv (20 dB SINAD) Signal/Noise ratio:...
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.
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IFB Receiver NOTES Rio Rancho, NM – USA...
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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