NARDA NBM-520 Operating Manual
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NARDA NBM-520 Operating Manual

Broadband field meter
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  • Page 1 NBM-520 Narda Broadband Field Meter Operating Manual...
  • Page 2 Narda Safety Test Solutions GmbH Sandwiesenstraße 7 72793 Pfullingen, Germany © 2007 Order no.: 2403/98.21 Edition: 02/07.12, A... Previous edition: 01/07.03, A... Subject to change. Our normal guarantee and delivery terms apply. Printed in Germany...

  • Page 3: Table Of Contents

    Dangers from AC adapter/charger ..... . . 10 Preparing the NBM-520 for use ......11 Unpacking .
  • Page 4 Connecting the probe....... . . 19 Measuring with the NBM-520 ......21 Switching on.
  • Page 5 NBM-520.........
  • Page 6 Contents NBM-520 Narda...

  • Page 7: Useful Information

    Useful information This chapter contains basic information about measuring electromagnetic fields and about using the NBM-520. Measuring electromagnetic fields (page 2) About this instrument (page 2) About this operating manual (page 3) Narda NBM-520...

  • Page 8: Measuring Electromagnetic Fields

    Probes for various measurement applications are con- nected to the NBM-520 basic unit. Flat frequency response probes are available, as well as so-called shaped probes that evaluate the field according to a specific human safety standard.

  • Page 9: About This Operating Manual

    • Field strength measurements in TEM cells and absorber chambers About this operating manual Characters and symbols used Various elements are used in this operating manual to indi- cate special meanings or particularly important passages in the text. Narda NBM-520...
  • Page 10 Indicates a hazardous situation which, if not avoided, will DANGER result in death or serious injury. Structure of warnings All warnings are structured as follows: SIGNAL WORD Type and source of danger Consequences of failure to observe warning ⇒ Instructions for preventing danger NBM-520 Narda...

  • Page 11: Terminology

    Cross reference (in PDF document only) Indicates a cross reference to another part of the docu- ment. Click on the blue type in the PDF document to jump directly to the cross reference. Terminology Item Meaning Battery Rechargeable battery Dry battery Non-rechargeable battery Narda NBM-520...
  • Page 12 1 Useful information NBM-520 Narda...

  • Page 13: Safety Instructions

    Safety instructions This chapter contains important instructions on how to use the NBM-520 safely. Please therefore read this chapter carefully and follow the instructions closely. Using this operating manual (page 8) Proper use (page 8) Improper use (page 8) Dangers from electromagnetic fields (page 9)

  • Page 14: Using This Operating Manual

    Improper use The NBM-520 is not a warning device that gives active notice of the existence of dangerous fields by means of a visible or audible warning signal.

  • Page 15: Dangers From Electromagnetic Fields

    ⇒ Affix labels of any type only to the black probe shaft. ⇒ If the instrument malfunctions, take it out of service and contact your Narda Service Center. The addresses are listed at the end of this operating manual and on the In- http://www.narda-sts.com.

  • Page 16: Dangers When Handling Rechargeable Batteries

    Dangers when handling rechargeable batteries When handled improperly, rechargeable batteries can overheat, explode, or ignite. ⇒ Only use the NBM-520 with NiMH rechargeable batter- ies (AA, Mignon). ⇒ Do not use dry batteries. ⇒ Do not replace individual batteries; always replace the entire set.

  • Page 17: Preparing The Nbm-520 For Use

    Preparing the NBM-520 for This chapter describes all you need to do before starting to use the NBM-520. Unpacking (page 12) Instrument overview (page 15) Using rechargeable batteries and the AC Adapter / Charger (page 17) Connecting the probe (page 19)

  • Page 18: Unpacking

    Instrument/accessories damaged during transportation Using damaged instrument/accessories can lead to subsequent damage. ⇒ Check the instrument and all accessories for damage when you have unpacked them. ⇒ If the instrument is damaged, contact your Narda Ser- vice Center. NBM-520 Narda...

  • Page 19: Equipping The Case

    3.1 Unpacking NOTICE: The addresses of your Narda Service Center are listed at the end of this operating manual and on the Internet at http://www.narda-sts.com. Equipping the case You can use the case provided to store a wide range of optional accessories in addition to the items supplied.

  • Page 20: After Transport And Storage

    3 Preparing the NBM-520 for use After transport and storage NOTICE Condensation on an instrument can lead to damage Condensation can form on an instrument that has been stored at a low temperature when it is brought into a warm room. It may be damaged if used.

  • Page 21: Instrument Overview

    3.2 Instrument overview Instrument overview Narda NBM-520...
  • Page 22 3 Preparing the NBM-520 for use Probe connector socket Display Operating panel Hold or Start / Stop button Freezes the display value, or start / stop measurement for spatial measurements Mode button Selects the display mode for the measured values...

  • Page 23: Using Rechargeable Batteries And The Ac Adapter / Charger

    We do not recommend that you operate the in- strument with the AC Adapter / Charger con- nected, as this can significantly degrade the measurement performance of the NBM-520. The measurement accuracy figures given in the spec- ifications cannot then be guaranteed.

  • Page 24: Operation From Rechargeable Batteries

    3 Preparing the NBM-520 for use Operation from rechargeable batteries Note: The batteries are supplied pre-charged. You must fully charge them before using them the first time. Charging the batteries WARNING Charging the batteries with wrong AC Adapter / Charger...

  • Page 25: Connecting The Probe

    There are many different probes available for different appli- cations for the NBM-520. You can find more information about the order numbers and specifications of the probes Ordering information...
  • Page 26 3 Preparing the NBM-520 for use data sheets of the NBM-520 and NBM probes. These docu- ments can also be downloaded from the Narda web site on the Internet at^http://www.narda-sts.com. NOTICE Wrong handling of the probe Damage of the probe head ⇒...

  • Page 27: Measuring With The Nbm-520

    Measuring with the NBM-520 This chapter describes how to make measurements using the NBM-520. Switching on (page 22) Displaying the instrument settings (page 22) Self test (page 25) Setting the contrast (page 25) Overview of the display (page 26) Selecting the result type (page 26)

  • Page 28: Switching On

    4 Measuring with the NBM-520 Switching on You can switch the instrument on as soon as you have pre- pared it for use. ⇒ Press the ON/OFF button to switch the instrument on. The instrument displays the instrument settings and performs a self test.
  • Page 29 The default setting is 10 seconds. AVG TIME This value specifies the time period over which the results are averaged. You can use the PC software to set this time period between 4 s and 30 min in steps of 2 s. Narda NBM-520...
  • Page 30 4 Measuring with the NBM-520 SPATIAL This item displays the measurement method currently selected for determining the spatial average. The following settings are possible: • Spatial Discrete Individual measurement values are recorded and averaged. • Spatial Continuous The measurement values are recorded and averaged continuously.

  • Page 31: Self Test

    If an error message is displayed again: ⇒ Switch the instrument off and contact your nearest Narda Service Center. Setting the contrast You can change the display contrast dependent of the envi- ronment lighting in order to achieve optimal instrument read-out.

  • Page 32: Overview Of The Display

    Field type / REMOTE displays during a remote con- trolled measurement Value is outside probe measurement range Selecting the result type The NBM-520 can display the results in various ways: ACT (Actual) (page 27) • MAX (Maximum) (page 27) •...

  • Page 33: Act (Actual)

    The time counts down to 0. When the averaging time has elapsed, the remaining time display is no longer shown. ⇒ Press the Clear button to reset the average value and re- start the measurement. Narda NBM-520...

  • Page 34: Spatial (Spatial Average)

    4 Measuring with the NBM-520 SPATIAL (spatial average) The spatial average function allows you to determine the spatial average value of the field strength. This measure- ment mode is used, for example, to determine the degree to which the human body is exposed to electromagnetic radia- tion.

  • Page 35: Selecting The Units

    1. Press the Mode button repeatedly until the result type SPATIAL is displayed. 2. Press the Hold button to start the measurement. 3. Move the NBM-520 smoothly through the volume to be measured and then press the Hold button again to end the measurement.

  • Page 36: Freezing A Result

    4 Measuring with the NBM-520 Freezing a result 1. Press the Hold button to hold the measurement value that is currently displayed. 2. Press the Hold button again to resume measuring. Changing the field type measurement The E-field and H-field probes can only measure the field type for which they were designed.

  • Page 37: Remote Control

    The NBM-520 can be remote controlled using the NBM-TS software or from an NBM-550 measuring set. This allows you to use the NBM-520 in places that are difficult to reach and read the results without needing to see the actual dis- play on the NBM-520.

  • Page 38: Instrument Settings During Remote Control Operation With Nbm-Ts Or With Nbm-550 As The Controller

    1. Set the NBM-550 to controller operating mode (see NBM-550 operating manual). 2. Switch on the NBM-520 and connect it to the NBM-550 using a fiber optic cable. The NBM-520 can be used as an extended probe handle.

  • Page 39: Switching Off

    4.12 Switching off Example: The NBM-520 is remotely controlled via the NBM-550. On NBM-550, the result type Average with 6 min. averaging time was set. The measuring results are cor- rectly displayed in V/m. The NBM-520 simultaneously displays completely different values because it was set to MAXimum and W/m .
  • Page 40 4 Measuring with the NBM-520 NBM-520 Narda...

  • Page 41: Pc Software

    This chapter gives you some basic information about the NBM-TS PC software. It explains the possible applications of the software, how to connect the NBM-520 to the PC and the settings you need to make on the NBM-520. It also describes how to update the NBM-520 software using the PC software.

  • Page 42: Using The Pc Software

    • USB driver (installed with the software) Connecting the NBM-520 You can connect the NBM-520 to the PC using the optical interface and the O/E converter. Use the 2 m long optical data cable supplied with the NBM-520 for this purpose.

  • Page 43: Changing The Instrument Settings

    • LIMIT SHAPED • ALARM Updating the firmware You can update the firmware of the NBM-520 in order to make use of new or improved functions. You can only update the firmware using a PC on which the NBM-TS PC software has been installed.
  • Page 44 5 PC software Updating the firmware 1. Save the latest firmware for the NBM-520 on the PC. The latest firmware is available from the Narda web site at http://www.narda-sts.com. The NBM-TS software automatically directs you with a simple mouse click to the corresponding web site in or- der to search for a newer version of both the NBM-520 firmware as well as the NBM-TS software.

  • Page 45: Instrument Maintenance

    This chapter describes how to clean the instrument, replace the batteries, dispose the instrument and check the instru- ment for proper operation. Cleaning the instrument (page 40) Replacing / removing the batteries (page 40) Disposal (page 42) Checking for proper operation (page 43) Narda NBM-520...

  • Page 46: Cleaning The Instrument

    2. To prevent streaks and spots, wipe off the instrument with a dry cloth while it is still damp. Replacing / removing the batteries The rechargeable batteries have a useful life of about 1000 charge cycles or 3 years (whichever occurs soonest). NBM-520 Narda...
  • Page 47 Improper replacement of batteries Overheating, explosion, or ignition of rechargeable batteries/batteries or their surroundings ⇒ Only use the NBM-520 with NiMH rechargeable batter- ies (AA, Mignon). ⇒ Do not use dry batteries. ⇒ Do not replace individual batteries; always replace the entire set.

  • Page 48: Disposal

    (a complete charge cycle takes about 2 hours). Disposal Rechargeable batteries Do not dispose of the batteries with the normal household waste. You should dispose of old batteries that are no longer required in accordance with the waste disposal ordinances in your country. NBM-520 Narda...

  • Page 49: Instrument

    Within the European Union, all electronic measuring sys- tems purchased from Narda after 13th August 2005 can be returned when they reach the end of their useful life. The measuring systems that come under this regulation or the documents that accompany them are clearly marked with the symbol of a garbage bin crossed out with black lines.
  • Page 50 Measures to be taken when function test is erroneous: ⇒ Repeat the test: – move the signal source around the probe head to generate a signal for each of the 3 spatial axes, – monitor the display while moving the signal source. NBM-520 Narda...

  • Page 51: Appropriate Test Sources

    Radio EF0391 EF1891 EF6091 HF3061 HF0191 EA5091 EB5091 EC5091 ED5091 EF5091 EF5092 1) PMR Pocket Radios are commonly available in electronics stores. 2) Model 8699 only available for North America. 3) LF sensor only 4) RF sensor only Narda NBM-520...
  • Page 52 6 Instrument maintenance NBM-520 Narda...

  • Page 53: Specifications

    Specifications This chapter lists the specifications of the NBM-520. Display (page 48) Measurement functions (page 48) Interfaces (page 48) General specifications (page 49) AC Adapter / Charger Unit (page 49) CE Declaration of Conformity (page 50) Narda NBM-520...

  • Page 54: Display

    For remote control and instrument configuration serial, full duplex, 115 kbaud, no parity, 1 start bit, 1 stop bit Probe connection Plug and play with automatic recognition, compatible with all NBM-series probes, integration time for measuring input approx. 270 ms NBM-520 Narda...

  • Page 55: General Specifications

    100 – 240 V AC Nominal AC line frequency 50 – 60 Hz range Output voltage 9 V DC Maximum output current 1.5 A Temperature range • Storage -40 °C – 70 °C • Operation 0 – 40 °C Narda NBM-520...

  • Page 56: Ce Declaration Of Conformity

    7 Specifications CE Declaration of Conformity NBM-520 Narda...

  • Page 57: Ordering Information

    Ordering information This chapter lists the ordering information for the NBM-520, probes and accessories. NBM-520 (page 52) Probes (page 52) Accessories (page 53) Narda NBM-520...

  • Page 58: Nbm-520

    NBM-500 Set 2, Narda Broadband Field Meter 2400/102 contains: • NBM-520 Basic Unit (incl. 2 x NiMH batteries, AA / Mignon type)(2403/01) • Rigid shell case for basic unit and up to two probes (2400/90.07) • AC Adapter / Charger, 9 VDC, 100 - 240 VAC (2259/92.06)

  • Page 59: Accessories

    Extension handle (non-conducting), 0.42 m 2260/90.06 O/E converter, RS232, RP-02/DB9 Cable, fiber optic, duplex (1000 μm) F-SMA to RP-02, 0.3 m 2260/91.01 Cable, fiber optic, duplex (1000 μm) RP-02, 2 m 2260/91.02 Cable, fiber optic, duplex (1000 μm) RP-02, 20 m 2260/91.03 Narda NBM-520...
  • Page 60 8 Ordering information NBM-520 Narda...

  • Page 61: Index

    Dangers from 19 Probe testing 43 Discrete spatial measurement 28 Proper use 8 Display backlight 23 Disposal 42 Rechargeable batteries Proper handling of 19 Electromagnetic fields, Dangers from 9 Remote control 31 Error message 25 Safety instructions 7 Narda NBM-520...
  • Page 62 Spatial average 28 Specifications 47 Switching off 33 Switching on 22 Symbols and marks 5 Terminology 5 Test sources 45 Transport and storage 14 Transport case 13 Transport damage 12 UNIT 24 Unpacking 12 Using the alarm function 30 NBM-520 Narda...
  • Page 64 Narda Safety Test Solutions GmbH Sandwiesenstraße 7 72793 Pfullingen, Germany Phone: +49 7121-9732-777 Fax: +49 7121-9732-790 E-mail: support@narda-sts.de www.narda-sts.com Narda Safety Test Solutions 435 Moreland Road Hauppauge, NY 11788, USA Phone: +1 631-231-1700 Fax: +1 631-231-1711 E-mail: NardaSTS@L-3COM.com www.narda-sts.us Narda Safety Test Solutions Srl...

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