Lectrosonics HMA-941 Series Instruction Manual Download | Manualshive

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HMA-941 Series

Plug-on UHF Transmitter

INSTRUCTION MANUAL

Rio Rancho, NM, USA

www.lectrosonics.com

Fill in for your records:

Serial Number:

Purchase Date:

Digital Hybrid Wireless

®

US Patent 7.225.135

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Summary of Contents for HMA-941 Series

Page 1: ...HMA 941 Series Plug on UHF Transmitter INSTRUCTION MANUAL Rio Rancho NM USA www lectrosonics com Fill in for your records Serial Number Purchase Date Digital Hybrid Wireless US Patent 7 225 135 ...

Page 2: ...e long battery life as analog systems plus the excellent audio fidelity typical of pure digital systems The transmitter uses a standard 3 pin XLR input jack for use with any microphone with a a mating XLR connec tor An LCD membrane switches and multi color LEDs on the control panel make input gain adjustments and frequency and compatibility mode selection quick and accurate without having to view ...

Page 3: ...Technical Description 4 Digital Hybrid Wireless Technology 4 Low Frequency Roll Off 4 No Pre Emphasis De Emphasis 5 Input Limiter 5 Signal Encoding and Pilot Tone 5 Microprocessor and DSP 5 Compatibility Modes 5 Control Panel 5 Controls and Functions 6 LCD Screen 6 Power LED 6 Audio Input Jack 6 Battery Compartment 6 Modulation LEDs 6 Audio Button 6 Freq Button 6 UP DOWN Arrows and Panel Lockout 6...

Page 4: ... systems over come channel noise in a dramatically new way digitally encoding the audio in the transmitter and decoding it in the receiver yet still sending the encoded informa tion via an analog FM wireless link This proprietary algorithm is not a digital implementation of an analog compandor but a technique that can be accomplished only in the digital domain even though the inputs and outputs ar...

Page 5: ...A D converter and adds an ultrasonic pilot tone to control the receiver s squelch A pilot tone squelch system provides a reliable method of keeping a receiver output muted squelched even in the presence of significant interference When the system is operating in the hybrid mode a differ ent pilot tone frequency is generated for each carrier frequency in 100 kHz increments to prevent inadvertent sq...

Page 6: ...an 10 dB Red Red Audio Button The AUDIO button is used to display the audio level set ting low frequency roll off and phantom power mode Repeatedly pressing the button will cycle through the available settings allowing the UP and DOWN arrow buttons to adjust the values Freq Button The FREQ Button displays the selected operating frequency and also toggles the LCD between displaying the actual opera...

Page 7: ... Slide the Battery Cover until it snaps securely shut Attaching Removing a Microphone The spring loaded coupler under the XLR jack main tains a secure fit to the microphone jack with continu ous pressure applied by an internal spring To attach the microphone simply align the XLR pins and press the microphone onto the transmitter until the coupler retracts and latches A click sound will be heard as...

Page 8: ...rfering with other systems operating in the same location The screen displays rf OFF to remind the user that the unit is not transmitting While the unit is in the standby mode access the setup screens using the AUDIO and FREQ buttons and make adjustments using the UP and DOWN arrows Menus Setup is accomplished using menus and setup screens accessed by holding the UP and DOWN arrow buttons at turn ...

Page 9: ...rocedure the transmitter s audio level setting should not be used to control the volume of your sound system or recorder levels This gain adjustment matches the transmitter gain with the microphone s output level the user s voice level and the position of the microphone The audio input level gain should be adjusted with the unit in the Standby Mode while observing the LEDs It is generally best to ...

Page 10: ...nuated by the power supply The HMa improves on those functions and is able to use less power from the battery by using constant current sources and current limiters With this dynamic arrangement the HMa can also supply more than twice the current of competing 48 Volt plug on units and pro vide four times the current for some very high end 15 Volt microphones FREQ Button The operating frequency can...

Page 11: ...HMa transmitter insert the adapter between the microphone and the transmit ter Insert the adapter between the transmitter and micro phone to alleviate the problems listed above Barrel Adapter Earthworks M30 PHTRAN3 Replacement leather pouch with clear plastic screen cover rotating belt clip and snap closure Included with transmitter at purchase MCA5X Optional adapter for connecting a lavaliere mic...

Page 12: ... choose Firmware Step 1 Begin by downloading the USB Firmware Updater Program Step 2 Next test the Updater by opening the icon If the driver opens automatically proceed to Step 3 WARNING If you receive the following error the Updater is not installed on your system Follow the TROUBLESHOOTING steps to fix the error TROUBLESHOOTING If you receive the FTDI D2XX error shown above download and install ...

Page 13: ...itter to your PC Step 7 In Lectrosonics USB Firmware Updater choose the detected device browse to local Firmware File and click Start NOTE It may take up to a minute or so for the Updater to recognize the transmitter WARNING Do not disrupt the microUSB cable during updating The Updater alerts with progress and completion Step 8 Once the Updater has completed turn off the trans mitter then turn it ...

Page 14: ...ter greater than 30 dB range Gain control range 55 dB panel mounted membrane switches Modulation indicators Dual bi color LEDs indicate modulation of 20 10 0 10 dB referenced to full modulation Audio Performance overall system Frequency Response 35 Hz to 20 kHz 1dB Low frequency Roll off Adjustable for 3dB 30 50 70 100 120 or 150 Hz THD 0 2 typ 100 Hz to 20 kHz System Dynamic Range SmartNR no limi...

Page 15: ...Plug on UHF Transmitter Rio Rancho NM 15 ...

Page 16: ...ransmitter and receiver not on same frequency Check switches display on transmitter and receiver 5 Operating range is too great 6 Defective transmitter or receiver antenna NO SOUND OR LOW SOUND LEVEL RECEIVER INDICATES PROPER AUDIO MODULATION 1 Receiver output level set too low 2 Receiver output disconnected or cable defective or mis wired 3 Sound system or recorder input is turned down DISTORTED ...

Page 17: ...or FREQ button to make adjustments to the audio gain or frequency settings PLL APPEARS IN DISPLAY 1 Indication that the PLL is not locked This is a serious condition that requires factory repair It may be possible to operate on another frequency far removed from the one that was selected when PLL appeared on the display TRANSMITTER WON T RESPOND TO REMOTE CONTROL 1 If LCD blinks rc oFF transmitter...

Page 18: ...irs Returning Units for Repair For timely service please follow the steps below A DO NOT return equipment to the factory for repair without first contacting us by email or by phone We need to know the nature of the problem the model number and the serial number of the equipment We also need a phone number where you can be reached 8 A M to 4 P M U S Mountain Standard Time B After receiving your req...

Page 19: ......

Page 20: ...l pay for the cost of returning your equipment to you This warranty applies only to items returned to Lectrosonics Inc or an authorized dealer shipping costs prepaid within one year from the date of purchase This Limited Warranty is governed by the laws of the State of New Mexico It states the entire liablility of Lectrosonics Inc and the entire remedy of the purchaser for any breach of warranty a...

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