Extech 480846 - Manuals - manualsarea.com

Page 2 - Safety Information

480846-en-EU_V4.3 09/14 2 Safety Information CAUTION  Before making a measurement, check if the low battery symbol ( + ) is shown on the display when the meter is switched on. Replace the battery if the symbol is displayed.  In the case of prolonged storage, it is preferable to remove the battery ...

Page 3 - Introduction; to 8GHz; 0MHz to 8 GHz Frequency range.; Fundamentals; Where the nature of the electromagnetic field is unknown.; The characteristic of electromagnetic fields :

480846-en-EU_V4.3 09/14 3 Introduction This meter is a broadband device for monitoring high-frequency radiation in the range of 10MHz to 8GHz . The non-directional electric field and high sensitivity also allow measurements of electric field strength in TEM cells and absorber rooms. The unit of meas...

Page 4 - Description; Front Panel Description; key

480846-en-EU_V4.3 09/14 4 Description Front Panel Description (1). E-field sensor. (2). LCD display. (3). MAX/AVG  Press this key to scroll through the following: “Instantaneous”  “Max. instantaneous”  “Average”  “Max. average”. (4) key : Press this key to turn the meter on or off. (5). UNIT  P...

Page 5 - LCD display description

480846-en-EU_V4.3 09/14 5 LCD display description (1). : Auto power off function on / off. (2). : Audible sound function on / off. (3). MAX: Maximum measured value displayed. MAX AVG: Maximum average value displayed. (4). AVG: Average measured value displayed. (5). + : Low battery indication. (6). U...

Page 6 - Operation; Explanatory notes; Units of measurement; The digital display shows the highest instantaneous value

480846-en-EU_V4.3 09/14 6 Operation E-field sensors The 3-channel sensor is located at the top of the meter. The three voltages generated by the sensor are fed back to the meter. In far-fields, an E-field sensor is preferable due to the greater bandwidth. The E-field sensor specific calibration accu...

Page 7 - Setting the units of measurement; Press the UNIT key to step through the units display.; Setting the result mode; AVG

480846-en-EU_V4.3 09/14 7 Alarm Limit Value (ALARM) The alarm limit value is used to monitor the display value automatically. It controls alarm indication function. The alarm limit value can be edited in the display V/m unit. NOTE: Alarm Limit Function is only used for total three axial value compar...

Page 8 - TIME ALARM; SET

480846-en-EU_V4.3 09/14 8 Setting the alarm limit value (ALM) 2 2 2 XY Z Z Y X 2 Z Y X 2 Power off Hold-on + 2 XY Z Z Y X XY Z XY Z Z Y X 1. Press key to turn off the meter. 2. Press and hold the TIME ALARM key, then press key to turn on the meter, the display then shows “ALM” and “ ▲ ” (The Alarm s...

Page 9 - Setting the alarm function on or off; ALARM; Setting the audible sound function off; READ

480846-en-EU_V4.3 09/14 9 Setting the alarm function on or off 1. Press ALARM key for 2 seconds to switch the alarm function on or off. The “ALM” and “ ” symbols in the display indicates that the alarm function is on. 2. When the alarm function is on, the display will show “ ▲ ” if the instantaneous...

Page 10 - Making measurements; Hold the meter steady during the measurement.; Short-term measurements; Hold the meter at arm’s length.; Long-term exposure measurements; values are fluctuating greatly.; Alarm function

480846-en-EU_V4.3 09/14 10 Making measurements Important: If the sensor is moved quickly, excessive field strength values will be displayed which do not reflect the actual field conditions. This effect is caused by electrostatic charges. Recommendation: Hold the meter steady during the measurement. ...

Page 11 - Data memory; key, the display shows “

480846-en-EU_V4.3 09/14 11 Data memory The meter includes a non-volatile data memory that can store a maximum of 99 measured values. Storing individual measured values MEM The current memory location number appears in the lower right small display. Once you press the MEM key, it will store a display...

Page 12 - Deleting stored values; Setting Current Data and Time

480846-en-EU_V4.3 09/14 12 Deleting stored values Once the memory is full, the entire contents of the memory can be cleared. 1. Press to turn off the meter. 2. Press and hold MEM and turn on the meter again; the display will shows: “ ” and “ ”. 3. Press ▲ to select “ . ”. 4. Press SET to clear memor...

Page 14 - Battery Installation and Replacement; Battery Installation; Specifications; General Specifications

480846-en-EU_V4.3 09/14 14 Battery Installation and Replacement Battery Installation Remove the rear battery cover and insert a fresh 9V battery. Battery Replacement When the battery voltage drops below the operating voltage, the battery icon + appears and flashes. If it appears, the battery should ...

Page 15 - Electrical Specifications; Ambient temperature:; Isotropy deviation; Typically; Overload limit; Copyright

480846-en-EU_V4.3 09/14 15 Electrical Specifications Unless otherwise stated, the specifications hold under the following conditions:  The meter is located in the far-field of a source, the sensor head is pointed towards the source.  Ambient temperature: +23C  3C  Relative air humidity: 25% to 7...