INSTRUCTION MANUAL SRa5P & SRa Camera Slot Dual UHF Receiver Featuring Digital Hybrid Wireless® Technology U.S. Patent 7,225,135 See Quick Start Summary on page 3 Fill in for your records: Serial Number: Purchase Date: Rio Rancho, NM, USA www.lectrosonics.
SRa5P and SRa Dual Receivers 2 LECTROSONICS, INC.
UHF Digital Hybrid Wireless® Table of Contents Model Differences.................................................................... 4 SRa5P.................................................................................... 4 SRa........................................................................................ 4 General Technical Description............................................... 5 RF Front-End and Mixer.........................................................
SRa5P and SRa Dual Receivers Digital Hybrid Wireless® The Lectrosonics Digital Hybrid Wireless® uses innovative technology to combine the advantages of digital audio with the advantages of analog RF transmission. The result delivers the superior sound quality of a digital system and the excellent range of an analog system. A proprietary algorithm encodes the digital audio information into an analog format which can be transmitted in a robust manner over an analog FM wireless link.
UHF Digital Hybrid Wireless® General Technical Description RF PCB Block Diagram Receiver 1 Splitter IF amp Mixer RF amp SAW filter 243.950 MHz IF amp SAW filter 243.950 MHz SAW filter 1st VCO High side injection Phase switch Audio 1 Window detect 2nd VCO 244.200 MHz RSSI PLL SR Dual Receiver RF Board Ref. Osc SAW filter Pulse detector µP Phase switch Receiver 2 250 kHz Rx IC PLL RSSI 248.
SRa5P and SRa Dual Receivers RF Front-End and Mixer Each antenna signal is first passed through a high quality SAW filter to reject high power RF signals above and below the operating frequency. A high current amplifier follows the SAW filters and passes the signal to an internal splitter so that both antenna signals are available to both receivers for SmartDiversity™ reception.
UHF Digital Hybrid Wireless® The Smart Noise Reduction algorithm has three modes, Selectable from a user setup screen. The optimal setting for each application is subjective and selected while simply listening. OFF - no noise reduction is performed and complete transparency is preserved. All signals presented to the transmitter’s analog front end, including any faint microphone hiss, will be faithfully reproduced at the receiver.
SRa5P and SRa Dual Receivers Front Panel Controls and Functions Receiver 1 Receiver 2 MENU/SELECT Button UP Button Audio Output DOWN Button POWER/BACK Button LCD Main Window with two channels shown UP/DOWN Arrow Buttons Audio Outputs In addition to the audio outputs on the rear panel, the front panel of the receiver provides a second set of outputs through a 5-pin connector.
UHF Digital Hybrid Wireless® Camera Slot Adapters Installing Camera Slot Adapters SRUNI SRUNI Adapter Thread two short screws through the recessed tabs on the adapter and slide it onto the receiver housing. Thread two short screws through the tabs on the receiver flange as shown. Adapter kit for Unislot® camera slots such as those provided on Ikegami® and Panasonic® cameras.* Includes bezel, hardware and rear panel DB25 connector wired for power and audio connections.
SRa5P and SRa Dual Receivers Adapters for Stand-alone Use SREXT For stand-alone use, this kit includes a rear panel with two TA3 male jacks for the balanced outputs and a power jack with a locking connector. Trim the power cable to the desired length. Installing Rear Panel Adapters Installation of the rear panel output/power adapters is the same for all models. Panels are held in place by two phillips head screws on the sides of the housing.
UHF Digital Hybrid Wireless® Audio Output Cables External Power Cables MCSR5PXLR5P 21747 Locking LZR style plug to stripped and tinned; 6 feet long. Right angle TA5F plug to 5-pin XLR; balanced outputs; 25 inches long. For SRa5P/5P outputs. MCSR5PXLR2 Right angle TA5F plug to two 3-pin XLR; balanced outputs; 20 inches long. For SRa5P/5P outputs. RATPAC Adapter Kit Adapter kit to build either a 3-pin or 5-pin TA Series right angle connector.
SRa5P and SRa Dual Receivers Mounting and Orientation Installation into the slot on a video camera places the antennas in an optimal vertical position away from the camera body. When used with non-slot cameras, as depicted in the diagram below, one or two receivers can be positioned in a variety of locations around the camera body using the Velcro and SRaSLEEVE mounting options.
UHF Digital Hybrid Wireless® Whip Antennas Lectrosonics AMM Series UHF transmitter antennas follow the color code specifications in the chart below to identify operating frequency block range. (The frequency block range is engraved on the outside housing for each individual transmitter.) If a situation exists whereby the antenna is defective and the antenna cap is missing, refer to the following chart to determine the correct replacement antenna.
SRa5P and SRa Dual Receivers Jointed Whip Antennas The AMJ antenna is a general purpose design for any Lectrosonics receiver or transmitter with a standard SMA connector. The hinged joint pivots in both directions for positioning the whip at any desired angle.
UHF Digital Hybrid Wireless® Main Window (LCD) Receiver 1 Receiver 2 RF Level Diversity Activity Audio Level Pilot Tone Indicator The Main Window displays information concerning the condition of the Pilot Tone, antenna phase, RF and audio signal levels and battery conditions for both the receiver and the associated transmitter.
SRa5P and SRa Dual Receivers Navigating the LCD Receiver 1 Pilot Tone ON\OFF Hold MENU and press UP momentarily Receiver 2 Pilot Tone ON/OFF Hold MENU and press DOWN momentarily Main Window Hold MENU and hold UP Mute Audio on Receiver 1 Hold MENU and hold DOWN Mute Audio on Receiver 2 NOTE: Press the BACK button from the Main Window to briefly display the external power supply voltage. BACK Setup Window SETUP (item) Press UP/DOWN to select MENU BACK MENU 2 BACK MENU 1 80 652.
UHF Digital Hybrid Wireless® Main Window LEVEL The appearance of the LCD Main Window will change according to which diversity mode Selected. When set to SWITCH, the screen will be split to show both receivers at the same time. With the DIV MODE set to SWITCHED, two audio channels will be displayed. When set to RATIO, a single audio channel is displayed since the receiver are combined to pick up the same transmitter. With the DIV MODE set to RATIO, a single audio channel will be displayed.
SRa5P and SRa Dual Receivers • u, v allow up to 16 user-selected frequencies to be stored in each group. Each press of the UP or DOWN button will step to the next stored frequency in the group. Note: The Tuning Setup Screen only selects the tuning mode (NORMAL or Group Tuning) and not the operating frequency. Actual operating frequencies are chosen through the Frequency Screens. In Group tuning modes, the UP and DOWN buttons navigate among the Selected frequencies in the group. 1 a 05 640.
UHF Digital Hybrid Wireless® MIXTRIM and MIXMODE Since this is a dual receiver that can be used with cameras that offer only a single input in the slot, special options are available to allow the audio from the receivers to be mixed to either one or both audio output channels. The MIXMODE setting determines which audio signal appears at which output channel: • MIXBOTH mixes the audio and delivers the mix to both output channels. • MIXTO 1 mixes the audio and delivers the mix to output channel 1.
SRa5P and SRa Dual Receivers Scanning for Clear Frequencies Scan View Window Previously tuned frequency Zoom View Window Transmitter Switch Settings for the currently tuned frequency. 70 1 RF activity level. Dashed line (cursor) shows the currently tuned frequency. Cursor (center bar) Spectrum scanning with the receiver itself is the best way to find clear operating frequencies, since it will reveal all RF signals present in the receiver, including those generated by IM (intermodulation).
UHF Digital Hybrid Wireless® Pre-coordinated Frequencies Groupings of compatible frequencies have been created to minimize intermodulation problems in multiple channel wireless systems. The frequencies can be used with Digital Hybrid and analog Lectrosonics wireless equipment. Compatibility with other brands is likely, but not guaranteed by Lectrosonics. FREQ SW SET The uppermost eight frequencies comprise Grp a, the eight just below them comprise Grp b, and so on. tv29 565.200 1,4 tv29 565.
SRa5P and SRa Dual Receivers Frequency Coordination IM (intermodulation) is a process of two or more RF signals mixing in any stage in the transmitter or receiver that generates another RF signal. If this new signal happens to land on a carrier, IF or oscillator frequency you may have interference problems that affect range or audio quality. The possible combinations also include odd and even order harmonics of the carriers. Feel free to contact the factory if you need help in coordinating frequencies.
UHF Digital Hybrid Wireless® Specifications and Features Operating Frequencies (MHz): Block 470 470.100 - 495.600 Block 19 486.400 - 511.900 Block 20 512.000 - 537.500 Block 21 537.600 - 563.100 Block 22 563.200 - 588.700 Block 23 588.800 - 607.900 and 614.100 - 614.300 Block 24 614.400 - 639.900 Block 25 640.000 - 665.500 Block 26 665.600 - 691.100 Block 27 691.200 - 716.700 Block 28 716.800 - 742.300 Block 29 742.400 - 767.900 Block 944 944.100 - 951.
SRa5P and SRa Dual Receivers Troubleshooting Symptom Possible Cause INITIAL POWER ON LCD display not active or lit External power supply disconnected or inadequate. Wrong polarity power source. The external power input jack requires POSITIVE (+) to be on the center pin. Battery gets warm and doesn’t work. Battery may be low. Try fresh batteries. Version message shows DSP or COM This indicates an internal error. Please contact the factory for assistance.
UHF Digital Hybrid Wireless® Symptom Possible Cause ANTENNAS AND RF SIGNAL STRENGTH RF Level is weak No RF Signal AUDIO SIGNAL QUALITY Poor signal to noise ratio Receiver may need to be moved or reoriented. Antenna on transmitter or receiver may be defective or poorly connected - double check antennas. Improper length of antenna, or wrong antenna on transmitter or receiver. UHF whip antennas are generally about 3 to 5 inches long.
SRa5P and SRa Dual Receivers 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 the interconnecting cables and then go through the Troubleshooting section in this manual.
UHF Digital Hybrid Wireless® Rio Rancho, NM 27
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. 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.
