Extech Instruments 480846 User Manual
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Extech Instruments 480846 User Manual

Rf emf strength meter
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User's Guide
RF EMF Strength Meter
Model 480846

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Summary of Contents for Extech Instruments 480846

  • Page 1 User's Guide RF EMF Strength Meter Model 480846...

  • Page 2: Safety Information

    Fields with spectral components outside of this frequency range are generally incorrectly evaluated and tend to be underrated. Before using field strength measuring devices, you should thus be certain that all field components to be measured lie in the specified frequency range of the measuring device. 480846 V2.3 7/09...
  • Page 3 (E) and magnetic field strength (H) is not constant, so measure each separately. In the far-field, however, it is enough to just measure one field quantity, and compute the other accordingly. 480846 V2.3 7/09...

  • Page 4: Front Panel Description

    Press this key to switch to the manual data reading mode. Press this key again to exit this mode. Press and hold this key while turning the meter on to disable the Auto Power OFF function. The “ ” symbol will disappear 480846 V2.3 7/09...
  • Page 5 (15). Z : Z axis measured value displayed. (16). Y : Y axis measured value displayed. (17). X : X axis measured value displayed. (18). : Analog bargraph of each axis (X,Y or Z) measured dynamic range indication for observing trends. 480846 V2.3 7/09...

  • Page 6: Operation

    • Average (AVG): The digital display shows the average value measured, the “AVG” symbol is displayed. • Maximum average (MAX AVG): The digital display shows the highest average value measured, the “MAX AVG” symbol is displayed. Field strength Max. Hold Max. Average Average Actual 480846 V2.3 7/09...

  • Page 7: Setting The Result Mode

    (b). Computed magnetic field strength (mA/m). (c). Computed power density (mW/m (d). Computed power density (μW/cm Setting the result mode Instantaneous result mode is automatically set when the meter is turned on. Press the MAX/AVG key to step through the results displays: 480846 V2.3 7/09...

  • Page 8: Setting The Alarm Limit Value (Alm)

    “ALM” and “ ▲ ” (The Alarm setting mode). The four flashing digits can now be changed. 3. Press ▼ or ▼ key to increase or decrease the value. 4. Press to store the new setting value and exit. 480846 V2.3 7/09...

  • Page 9: Setting The Audible Sound Function Off

    When the meter is normally turned on, the auto power off function is on. 1. Press key to turn off the meter. 2. Press and hold READ key and turn on the meter again to disable the auto power off function; the “ ” symbol will disappear from the display. 480846 V2.3 7/09...

  • Page 10: Making Measurements

    Note : Use the “Average ” or “Max average” modes only when the instantaneous measurement values are fluctuating greatly. Alarm function Use this feature in the “Instantaneous”, “Max. Instantaneous”, “Average” or “Max. Average” modes. When the instantaneous measured value exceeds the limit value, a sequence of warning beeps will sound. 480846 V2.3 7/09...

  • Page 11: Data Memory

    2. Press ▼ or ▲ key to select the desired memory location. 3. Press the UNIT key to select the desired reading units. 4. Press the XYZ/CAL key to select the desired sensor axis reading. ► 5. Press the READ key to exit. 480846 V2.3 7/09...
  • Page 12 “hh:mm:ss” or “YY/MM/DD”. 3. Press keys to set the current time “hh:mm:ss” and current date “YY/MM/DD”. 4. Press the SET key to store setting value and exit. 480846 V2.3 7/09...

  • Page 13: Calibration Factor (Cal)

    1GHz 1.41 200 MHz 1.19 1.2GHz 1.46 300 MHz 0.69 1.4GHz 1.63 433 MHz 0.78 1.6GHz 0.62 500 MHz 1.38 1.8GHz 0.94 600 MHz 2.12 2GHz 0.83 700 MHz 1.66 2.2GHz 0.98 800 MHz 1.40 2.45GHz 0.96 480846 V2.3 7/09...

  • Page 14: Battery Installation And Replacement

    0°C to +50°C Operating humidity range : 5% to 75%RH Storage temperature range : -10°C to +60°C Storage humidity range : 0% to 80%RH Approx. 67(W) × 60(T) × 247(L)mm. Dimensions : Weight (including battery) : Approx. 250g 480846 V2.3 7/09...

  • Page 15: Electrical Specifications

    Frequency response: ± 1.0dB (50MHz to 1.9GHz) Sensor (with typical CAL factors) : ± 2.4dB (1.9GHz to 8GHz) Typically ± 1.0dB (f>50MHz) Isotropy deviation : Overload limit : 10.61mW/cm (200V/m) ± 0.5dB Thermal response (0 to 50°) : 480846 V2.3 7/09...

  • Page 16: Warranty

    Warranty EXTECH INSTRUMENTS CORPORATION (A FLIR COMPANY) warrants this instrument to be free of defects in parts and workmanship for one year from date of shipment (a six month limited warranty applies to sensors and cables). If it should become necessary to return the instrument for service during or beyond the warranty period, contact the Customer Service Department at (781) 890-7440 ext.

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