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Apex Digital Hera User Manual

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  • Page 1 H er a U ser manual w w w . a p e x - a u d i o . e u...
  • Page 2 APEX NV Schoebroekstraat 62 3583 Beringen (Paal) BELGIUM Tel: + 32 (0)11 28 61 91 Fax: + 32 (0)11 25 56 38 e-mail: info@apex-audio.eu website: www.apex-audio.eu Trademarks The APEX trademark is owned by APEX N.V. All other brand, product and company names and any other registered names or trade marks mentioned in this manual belong to their respective owners.
  • Page 3 Hera Class 2 Sound Level Meter February 2013 Serial number of this product: © 2000-2013 APEX N.V. All rights reserved. This manual may not be reproduced or transmitted, either in part or as a whole, by any means, be they mechanical or electronic,...
  • Page 4 Safety Important safety instructions When a cart is used, use caution when CAUTION: to reduce the risk of electric shock, do not moving the cart/apparatus combination to remove cover (or back). No user-serviceable parts avoid injury from tip-over. inside. Refer servicing to qualified service personnel. The apparatus should be located close enough to the AC outlet so that you can easily grasp the power cord The lightning flash with arrowhead symbol,...
  • Page 5 life, dispose of this product by returning it to the point Cleaning, maintenance and servicing of sale or to your local municipal collection point for recycling of electric and electronic devices. Unplug the apparatus from the wall outlet before cleaning. Do not use liquid cleaners or aerosol cleaners. Customer participation is important to minimize the Use a damp cloth for cleaning.

  • Page 6: Table Of Contents

    Front panel Rear panel Wiring the unit Connecting the Hera when used as a stand-alone device Connection when the Hera is used together with the Argos Connecting relays tot the Hera Connection to a PC Connection with the Apex Leto...

  • Page 7: Registration

    Registration Register your product Please take the time to register your product on-line by typing the following URL in your browser: http://productregistration.apex-audio.eu/ As well as registering the product on-line, please take the trouble to record the serial number of the unit in the space provided on page 3 of the manual, and keep the manual in a safe place.

  • Page 8: Introduction

    Thank you for buying the Apex Hera. Hera is a microprocessor based class 2 sound level meter and controller. Hera can be used either as a standalone unit or combined with the Apex Argos. Applications include noise level logging and control in bars, theatres, concert venues,…...
  • Page 9 Optionally you can connect the Apex Leto large deported Operating environment display to the Hera so that the audience, FOH engineer, band or DJ may have visual sight on the sound pressure levels at This appliance is designed to operate in most normal climates, any time.

  • Page 10: Measurement Microphone

    • When extending the microphone cable between the HMM and Hera. • By linking the Hera with an Argos noise limiter In the following case, an offset correction would need to be applied by means of a sine / noise generator: •...

  • Page 12: Front And Rear Panel Description

    Front and rear panel description Front panel Front panel LED display of L sound level display slow LCD display This display is used in conjunction with the rotary encoder and the push-buttons. It shows settings, adjustments and provides a readout of control data. Rotary Encoder Used to change settings and to navigate through menus and lists.

  • Page 13: Rear Panel

    This connector allows on or more Leto deported display to be connected. Leto will mimic the information shown on the front-panel LED display (1). To Argos Mic input This connector must ONLY used for connection with the Argos. Microphone input Connect here the microphone SUPPLIED WITH Hera.

  • Page 14: Wiring The Unit

    CONNECTING THE HERA WHEN USED AS A STAND-ALONE DEVICE Connect the microphone supplied with the Hera to the microphone input located on the rear panel (see rear panel drawing). In the installer menu, the operation mode must be set in ‘standalone’. Refer to the section “installer menu” for details.

  • Page 15: Connecting Relays Tot The Hera

    Programmable Logic Controller (PLC) in industrial environments. 1. Hera relay outputs are current limited to 60 mA. Some electromechanical relays or contactors may require a Relays can be connected using the connector labelled ‘RELAY higher current to enable activation.

  • Page 16: Connection To A Pc

    If longer distances between Leto and Hera are required, then the Leto Extender kit can be purchased. Using the Extender kit It is also possible to interconnect the Hera with a PC over an enables cable lengths up to 200 m to be used. The kit consists Ethernet network.

  • Page 17: Principles Of Operation

    The LCD screen in the middle of the front panel has three different display modes: TURNING ON • “HOME” mode Hera does not have an on/off switch. It lights up when the AC • “SPL LOG” mode power is connected. At boot-up, the LCD screen will briefly • “EVENT LOG” mode displays the unit’s firmware version.
  • Page 18 (LEQ) and maximum sound pressure level over a user adjustable period of time into its memory. The memory can • Green LED “Link”: when the Hera is properly connected contains up to 2880 items. When the memory is filled, the to an Argos, this LED shows that the connection is good.
  • Page 19 Alarm Relay Disc The ‘Alarm’ relay has been disconnected. In Stand Alone Hera has been configured to work in stand-alone mode, but will detect if an Argos has been connected. Transmis. Start Data transmission to the PC has begun. Transmis. End...

  • Page 20: Threshold Schedulling

    If the microphone is not reconnected within 10 seconds the alarm relay will activate. section ‘Connecting relays to the Hera’ earlier in this manual. In this mode, the logic outputs respond to short LEQ measurements of 1 minute (L or L ).

  • Page 21: Additional Functions When Used With The Argos

    At 70 seconds, the music has exceeded the threshold and the warning time period has commenced. The LEQ has been The Hera can also control the pink noise generator in the computed over the following 30 seconds but the final result was Argos.

  • Page 22: Installer Menu

    ‘enter’ and ‘next’ buttons on the front To move down the page, use the rotary encoder. panel at the same time. The Hera then asks you to enter your security code (PIN number). The default code is 1234.
  • Page 23 HERA installer menu overview...

  • Page 24: Basic Set-Up

    Cat.3’ for Class 2 and then press ‘enter’ to confirm your choice. the measurement chain before use (see section ‘Measurement Hera will ask you to confirm your choice using the ‘enter’ key or microphone and the measurement chain’ earlier in this manual).
  • Page 25 • Press ‘enter’. If Hera is used together with Argos, it will pressing ‘undo’. now supply a pink- noise. If not, the Hera will ask you to supply one. Press ‘enter’ again when you are ready. NOTE: The calibration offset is different for the ‘sand-alone’...

  • Page 26: Operation Set-Up

    To go back to the preceding period press ‘undo’. the AC supply back on line. When the start times for all periods have been set, Hera Adjustment range is from 1 min to 60 min or manual recover. requires a few moments to store the new list.

  • Page 27: Logging Set-Up

    AC power is restored and use the ‘exit’ button to Enables the error and events list, as well as the measurement go back to normal operating mode. list, to be erased. Hera will then ask you to confirm by pressing ‘enter’ again, or ‘undo’ to cancel. PREFERENCES...

  • Page 28: Memory Readout

    Apex’s website. This software is the only one that may be used for that purpose. Using Hera read-out, it is possible to retrieve the LEQ and MAX measurements list, the events list and other information such as firmware version. These data can be saved to a file or directly be copied and pasted into a spreadsheet or a database.

  • Page 29: Technical Specifications

    Technical specifications Properties and electrical specifications Reference environmental conditions Air temperature 23°C Static pressure 101.325 kPa Specifications Class IEC 61672 Class 2 sound level meter, group Z Microphone type 1/2-inch free-field condenser (0 ° incidence) Time-weighting slow (1s) Frequency-weighting A filter: 125Hz to 8kHz, deviation within Class 2 limits C filter: 125Hz to 8kHz, deviation within Class 2 limits Range single range 55-130dB SPL (A-weighted)

  • Page 30: Limited Warranty

    Limited warranty Limited warranty Apex N.V. (“Apex”) warrants you, the original purchaser, or any party that purchases the device from you, that its products are free from defects in material and workmanship under normal use for a period of two (2) years from the date of original purchase.
  • Page 32 w w w . a p e x - a u d i o . e u i n f o @ a p e x - a u d i o . e u Copyright © 2000-2013 APEX N.V. All rights reserved.

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