NARDA Nbm-520 Manuel utilisateur

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NARDA BROADBAND FIELD METER

NBM-520

Measuring electric

and magnetic

fields

ranging from high frequency

to microwaves

Non-directional measurement using

isotropic probes for applications in the

frequency range 100 kHz to 60 GHz

Intelligent probe interface with automatic

detection of probe parameters

for simple operation

Extra small and lightweight

Unbeatably easy 4-button operation

Auto zero ensures precision measurements

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DESCRIPTION

The Narda Broadband Field Meter NBM-520 is part of the NBM-500

family of test instruments. It measures non-ionizing radiation with utmost

accuracy and incorporates all the major basic measurement modes. In

contrast with the larger NBM-550, a memory for measurement results

has been deliberately left out of the NBM-520. The result is unbeatably

easy operation using just 4 buttons, so referring to the operating manual

is all but unnecessary.

Suitable measuring probes for electric and magnetic field strengths are

available for the frequency range from about 100 kHz up to 60 GHz. So-

called shaped probes which have frequency responses that weight the

results according to specific human safety standards are available in

addition to flat probes with flat frequency responses. All probes are

calibrated independently from the measuring instrument. They include a

non-volatile memory containing the probe parameters and calibration

data, so they can be used with any instrument in the NBM-500 family.

APPLICATIONS

The NBM-520 is used to make precision measurements to establish

human safety, particularly in workplace environments where high electric

or magnetic field strengths are likely to occur. Some examples are:

• Measuring field strengths to comply with general safety

regulations

• Establishing safe zones

• Measuring field strengths in the industrial environment, such as

plastics welding equipment, RF heating, tempering, and drying

equipment

• Measuring and monitoring field strengths around broadcasting

and radar equipment

• Measuring field strengths of cell phone transmitters and satellite

communications systems to demonstrate compliance with

human safety standard limit values

• Measurements for protecting users of diathermy equipment and

other medical devices that generate high-frequency radiation

• Measuring field strength in TEM cells and absorber chambers to

demonstrate electromagnetic compatibility (EMC)

Small, lightweight and rugged design –

ideal for use in rough environments

Changing the probe is quick and easy,

with no need to reconfigure the device

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FEATURES

The Narda Broadband Meter NBM-520 is designed for on-site use. The

concept focuses on simple operation and the range of functions has

been deliberately kept to the main features necessary for performing

precision field measurements.

Display and operation

–Operated by weatherproof foil keypad using just 4 buttons

with perceptible click point

–Backlit monochrome LCD with selectable illumination time,

easy to read even in bright daylight

Result display and evaluation

–4 measurement modes selectable using the Mode button:

Instantaneous value (ACT)

Maximum (MAX)

Time average (AVG)

Spatial average (SPATIAL)

–Display units selectable using the Units button:

V/m, A/m, mW/cm2, W/m2when using flat probes,

% of limit value when using shaped probes

–Hold button for “freezing” the display value

Automatic adjustment, application of calibration data

–Intelligent probe interface recognizes the NBM probe type and

automatically imports and applies the correction values stored

in the probe during calibration

–Fully automatic zero point adjustment with user definable time

interval

Warning functions

–Audible and visible warning signals for high field strengths:

Alarm threshold can be set from a PC

Everything at a glance. The clearly arranged

display is easy to read.

The optical interface connector and AC

adapter / charger connector compartment is

sealed with a rubber cap. The tilt stand

provided in addition to the tripod bush can be

used to place the instrument securely on a

flat surface.

Probe model Battery level

Result unitField type

Status

Result

Mode

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Operating features

–Standard rechargeable batteries provide long operating life

and can be recharged rapidly as needed

–Batteries protected by auto-off function with programmable

timer

–Instrument configuration easy to set using the PC software

supplied

Remote control

–PC software NBM-TS allows remote controlled measurements

–PC connected via optical interface to avoid field interference

effects

–Optical cable extension allows additional freedom of

movement for probes. The NBM-550 controller function

enables data communication with the smaller NBM-520 so it

can be used as an “extended probe handle”. This means that

probes can be situated remotely from the NBM-550 without

any metallic cables to adversely affect the measurements

The battery compartment is opened easily using a

coin. Two replaceable NiMH rechargeable batteries

(AA size) are used to power the device.

Probe extension using an optical cable: The NBM-550 acts as

controller and displays the results. The smaller NBM-520 acts as

the optical probe interface. Both devices can also be used

separately as measuring devices when fitted with probes.

rugged transport case is included. This provides

ideal protection for the instrument, together with

up to two probes and all accessories.

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PC SOFTWARE

The easy to use “NBM-TS” PC software

(included) provides the following functions:

–Remote controlled measurements

–Device configuration management

–Firmware update control

PROBES

Frequency range

100 kHz – 3 GHz

3 MHz -18 GHz

300 MHz – 50 GHz

27 MHz – 60 GHz

300 kHz – 30 MHz

27 MHz – 1 GHz

300 kHz – 50 GHz

Field type E E E E H H E Shaped

Probe designation EF0391 EF1891 EF5091

EF5092 EF6091 HF3061 HF0191 Ex5091

Mobile radio / telecommunications zz

zzz

Radio / TV broadcasting zz

zzz

Satellite communications zzz

{

Radar

{z{

{

Industry:

Heating and tempering z

Industry:

Plastics welding z

Industry:

Semiconductor production z

{

Medicine:

Diathermy, hyperthermy z

{

Leak detection zzz

{

Human safety

(general public safety) zz{zz{{

Health and safety at work

(occupational safety) zzzzzzz

zmore important {variable importance

Compatible with the

following operating

systems: Microsoft®

Windows®2000 SP4,

Windows®XP SP2,

Windows Vista TM

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SPECIFICATIONS

NBM-520

DISPLAY

Display type Transflective LCD, monochrome

Display size 4 cm (1.5”), 128 x 64 dots

Backlight LEDs, selectable illumination time (OFF, 5s, 10s, 30s, 60s, PERMANENT)

Refresh rate 400 ms

MEASUREMENT FUNCTIONS

Result units mW/cm2, W/m2, V/m, A/m (for flat probes)

% (for shaped probes)

Display range 0.01 to 9999 V/m

0.0001 to 265.3 A/m

0.0001 to 9999 W/m2

0.0001 to 9999 mW/cm2

0.0001 to 9999 %

Result types (isotropic, RSS) Actual (ACT), Maximum (MAX), Average (AVG), Spatial Averaging (SPATIAL)

Averaging time 4 s to 30 min (2 s steps), selectable by PC software

Spatial averaging discrete or continuously, selectable by PC software

Alarm function 2 kHz audible signal (4 Hz repetition), threshold adjustable by PC software

INTERFACES

Optical interface Serial, full duplex, 115200 baud, no parity, 1 start and 1 stop bit

Probe interface Plug-and-play auto detection, compatible with all NBM series probes

GENERAL SPECIFICATIONS

Recommended calibration interval 24 months (basic unit only, probes are specified separately)

Battery NiMH rechargeable batteries, 2 x AA size (Mignon), 2500 mAh, included

Operation time Approx. 22 hours (backlight off)

Approx. 16 hours (permanent backlight)

Charging time 2 hours

Battery level display 100%, 80%, 60%, 40%, 20%, 10%, low level (< 5%)

Temperature range

Operating

Non-operating (transport)

-10 °C to +50 °C

-30 °C to +70°C

Humidity 5 to 95%, non condensing

≤29 g/m³ absolute humidity (IEC 60721-3-2 class 7K2)

Size (h x w x d) 38 x 52 x 195 mm (without probe)

Weight 300 g (without probe)

Accessories (included) Hard case, power supply, rechargeable batteries, shoulder strap, NBM-TS software, operating

manual, certificate of calibration

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Narda Safety Test Solutions GmbH

Sandwiesenstrasse 7

72793 Pfullingen, Germany

Phone: +49 (0) 7121-97 32-777

Fax: +49 (0) 7121-97 32-790

E-Mail: [email protected]

www.narda-sts.de

Narda Safety Test Solutions

435 Moreland Road

Hauppauge, NY 11788, USA

Phone: +1 631 231-1700

Fax: +1 631 231-1711

E-Mail: [email protected]

www.narda-sts.com

Narda Safety Test Solutions Srl

Via Leonardo da Vinci, 21/23

20090 Segrate (Milano), Italy

Phone: +39 02 2699871

Fax: +39 02 26998700

E-mail: [email protected]

www.narda-sts.it

ORDERING INFORMATION

NBM-520 Part Number (P/N)

NBM-500 Set 2, Narda Broadband Field Meter

Includes:

- NBM-520 Basic unit (2403/01)

- Hard case, holds field meter and up to 2 probes (2400/90.07)

- Power supply, 9VDC, 100V-240VAC (2259/92.06)

- Shoulder strap, 1 m (2244/90.49)

- O/E converter

- Cable, fiber optic, duplex (1000 μm), RP-02, 2 m (2260/91.02)

- Software, NBM-TS, PC transfer (2400/93.01)

- Operating manual

- Certificate of calibration Probes are not included

2400/102

PROBES

Probe EF0391, E-field for NBM, 100 kHz – 3 GHz, isotropic 2402/01

Probe EF1891, E-field for NBM, 3 MHz – 18 GHz, isotropic 2402/02

Probe EF5091, E-field for NBM, thermocouple, 300 MHz – 50 GHz, isotropic 2402/03

Probe EF6091, E-field for NBM, 27 MHz – 60 GHz, isotropic 2402/04

Probe HF3061, H-field for NBM, 300 kHz - 30 MHz, isotropic 2402/05

Probe HF0191, H-field for NBM, 27 MHz – 1 GHz, isotropic 2402/06

Probe EA5091, Shaped E-field, FCC for NBM, 300 kHz - 50 GHz, isotropic 2402/07

Probe EB5091, Shaped E-field, IEEE for NBM, 300 kHz - 50 GHz, isotropic 2402/08

Probe EC5091, Shaped E-field, SC6 Canada for NBM, 300 kHz - 50 GHz, isotropic 2402/09

Probe ED5091, Shaped E-field, ICNIRP for NBM, 300 kHz - 50 GHz, isotropic 2402/10

Probe EF5092, E-field for NBM, thermocouple, 300 MHz – 50 GHz, high power, isotropic 2402/11

ACCESSORIES

Test generator, 27 MHz, hand-held 2244/90.38

Tripod, non-conductive, 1.65 m with carrying bag 2244/90.31

Tripod extension, 0.50 m, non-conductive (for 2244/90.31) 2244/90.45

Handle, non-conductive extension, 0.42 m 2250/92.02

O/E converter, RS232, RP-02 / DB9 2260/90.06

Cable, fiber optic, duplex, 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

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