Lectrosonics HMa-941 Quick Start Manual
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Lectrosonics HMa-941 Quick Start Manual

Plug-on transmitter
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HMa-941
Plug-On Transmitter
For FCC Part 74 licensed operators
Fill in for your records:
Serial Number:
Purchase Date:
Digital Hybrid Wireless
U.S. Patent 7,225,135
This guide is intended to assist with
initial setup and operation of your
Lectrosonics product.
For a detailed user manual, down-
load the most current
version at:
www.lectrosonics.com/manuals
®
30 November 2018

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Summary of Contents for Lectrosonics HMa-941

  • Page 1 HMa-941 Plug-On Transmitter Digital Hybrid Wireless ® U.S. Patent 7,225,135 For FCC Part 74 licensed operators Fill in for your records: This guide is intended to assist with initial setup and operation of your Serial Number: Lectrosonics product.

  • Page 2: Controls And Functions

    At UHF frequencies the length of the housing is ismiliar to 1/4 wavelength of the operating frequency, so the antenna is supris‑ ingly efficient, which helps extend the operating range and suppress noise and interference. LECTROSONICS, INC.

  • Page 3: Battery Installation

    Note: It is possible to install the batteries backward and close the battery door, but the batteries will not make contact and the unit will not work. 3. Slide the Battery Cover until it snaps securely shut. positive (+) terminal negative (–) terminal Battery Cover Battery Compartment www.lectrosonics.com...

  • Page 4: Power Up And Boot Sequence

    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. LECTROSONICS, INC.

  • Page 5: Hold Up Arrow At Turn On

    Allows the transmitter to be used with 941 Series receivers or IFB systems in the 941 MHz band. Digital hybrid mode Lectrosonics IFB systems Pr (power output) Can be set at 250 for extended range or at 50 for longer battery life.

  • Page 6: Hold Down Arrow At Turn On

    (remote control with mobile app) Allows the transmitter to respond to remote control “dweedle” tones from a mobile device, or from tones generated by the Lectrosonics RM and RM2 devices. Enables the remote function.

  • Page 7: Audio Button

    Repeatedly press the AUDIO button until the LF roll‑off adjustment screen appears. Then press and hold the AUDIO button while selecting the desired roll‑off frequency with the UP and DOWN arrows. The roll‑off frequency can be set to 35, 50, 70, 100, 120 and 150 Hz. www.lectrosonics.com...
  • Page 8 If the unit was set up in Standby Mode, it will be necessary to turn the trans‑ mitter off, then power it up again in normal operation so the RF output will be on. Then the other components in the sound or recording system can be adjusted. LECTROSONICS, INC.

  • Page 9: About The Phantom Power Supply

    With this dynamic arrangement the HMa can also supply more than twice the current of competing 48 Volt plug on units and provide four times the current for some very high end 15 Volt microphones. www.lectrosonics.com...

  • Page 10: Freq Button

    When the step size is set to 25 kHz, the last two digits will be 00, 25, 50 or 75 (3A.25 in the example below), which is still easier to remember than all six numerals of the frequency in MHz. LECTROSONICS, INC.

  • Page 11: Locking/Unlocking The Control Panel

    Remove the batteries to unlock the control panel. Important: Once the transmitter is locked, it cannot be unlocked or powered off using the buttons. The only ways to unlock a locked transmitter are to remove the battery or unlock it via the remote control. www.lectrosonics.com...

  • Page 12: Limited One-Year 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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