LATNEX HF-B8G User manual

Pro Triple Axis RF/High
Frequency Meter
HF-B8G
User’s
Manual
HB4HFB8G0000

Table of Contents
1Introduction.......................................................2
2Method of Operation.........................................2
3Fundamentals...................................................3
4Electric Field Strength (E)................................3
4.1 Magnetic Field Strength(H) 4
4.2 Power Density (S) 4
4.3 The Characteristic of Electromagnetic 4
Fields 4
5Application........................................................5
6Features............................................................6
7Identifying Parts................................................8
8LCD Description ...............................................9
9Specifications ...................................................10
9.1 Generalspecifications 10
9.2ElectricalSpecifications 12
9.3 Units of Measurement 13
9.4 Result modes 14
9.5 Measurement Procedures and 15
Preparation 15
9.6 Power key：15
9.7 Data HoldKey: 16
9.8 Units Key: 16
9.9 MAX / AVG Record: 17
9.10 Manual Data MemoryStoring 17
9.11 XYZ/CALL: 18
9.12 Alarm ON/OFF Setup 18
9.13 Viewing Data Records 19
9.14 Cancel the automatic power off/on : 19
9.15 Clock LCD Display 20
10 Setup Mode......................................................20
10.1 Clock Setup 21
10.2 Setting the alarm limit value (ALARM) 22
10.3 DEL data logger memory setup 23

10.4 Analogue bar graph setup 24
10.5 Auto power off time function setup 24
10.6 Setting the calibration factor (CAL) 25
11 Calibration Factor:............................................26
11.1 Short-term measurements: 27
11.2 Short-term measurements Procedure : 27
11.3 Long-term exposure measurements 28
12 Battery Replacement........................................29
13 External DC Power...........................................30
14 Safety Precautions ...........................................30
15 Safety Information ............................................31
16 Safety Information ............................................32
17 Disposal............................................................33

HF-B8G
EN-1
Axis RF Meter Quick Start Guide
This meter has many capabilities, including
memory, alarm, date/time, average etc.
which will require some study of the manual
to use properly. However, you can quickly
and easily begin making measurements
right out of the box. Just follow these simple
steps:
1. Insert 9V battery.
2. Turn meter on with GREEN button.
3. Press XYZ/MEM button until all three
(XYZ) letters are displayed on the screen
(to the left of the main number).
4. Press UNIT/ENTER button until the
desired units are displayed below the
main number (we recommend using
mV/m… and we recommend a maximum
level of 614 mV/m for prolonged
exposure).
You are now ready to make your first
measurements!

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1 Introduction
This meter is designed for measuring and
monitoring Radio–Frequency electromagnetic
field strength. The meter is calibrated precisely
over the frequency range of 10MHz~8GHZ.
2 Method of Operation
Press “Power” button on. To change
measuring unit (mV/m), push “UNIT” button
to change the unit. Electric field strength
V/m).Computed magnetic field strength
(mA/m).Computed power density
(mW/m2).Computed power density
(μW/cm2). Press "XYZ” this button
to change sensor axis selector:
“All axis ” → “X axis” → “Y axis”
→ “Z axis”.

HF-B8G
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3 Fundamentals
Electromagnetic Pollution
This meter is used to indicate electromagnetic
pollution generated artificially. Wherever there
is a voltage or a current, electric (E) and
magnetic (H) fields arise. All types of radio
broadcasting and TV transmitters produce
electromagnetic fields, and they also arise in
industry, business and the home, where they
affect us even if our bodies cannot detect
them.
4 Electric Field Strength (E)
A field vector quantity that represents the force
(F) on an infinitesimal unit positive test charge
(q) at a point divided by that charge. Electric
field strength is expressed in units of volts per
meter (mV/m). This meter measures electric
field strength directly.

HF-B8G
EN-4
4.1 Magnetic Field Strength(H)
A field vector that is equal to the magnetic flux
density divided by the permeability of the
medium magnetic field strength is expressed
in units of amperes per meter (A/m). In far field
situations, one can calculate the magnetic field
for the electric field value. This meter can
display the calculated magnetic field strength.
4.2 Power Density (S)
Power per unit area normal to the direction
of propagation, usually expressed in units of
watts per square meter (W/m2) or, for
convenience, units such as Milliwatts per
square centimeter (mW/cm2)
4.3 The Characteristic of Electromagnetic
Fields
Electromagnetic fields propagate as waves
and travel at the speed of light (C). The
wavelength is proportional to the frequency.
λ (wavelength) = C (speed of light) /
f (frequency)
If the distance to the field source is less than
three wavelengths, then we are usually in
the near field. If the distance is more than

HF-B8G
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three wavelengths, the far-field conditions
usually hold.
In near field conditions, the magnetic field value
cannot be calculated from the electric field
value. This meter is designed for reliable far
field measurements only.
5 Application
Quite often, routine maintenance and
service work has to be done in areas
where active electromagnetic fields are
present,
e.g. in broadcasting stations, etc.
Additionally, other employees may be
exposed to electromagnetic radiation.
In such cases, it is essential that
personnel be not exposed to dangerous
levels of electromagnetic radiation, such
as:
High frequency (RF) electromagnetic
wave field strengthmeasurement.
Mobile phone base station antenna
radiation power densitymeasurement.
Wireless communication applications
(CW, TDMA, GSM, DECT).
RF power measurement for transmitters.

HF-B8G
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Wireless LAN (Wi-Fi) detection,installation.
Spy camera, wireless bugfinder.
Cellular /Cordless: phone radiation safety
level.
Microwave oven leakagedetection.
Personal living environment EMFsafety.
6 Features
The meter is a broadband device for
monitoring high-frequency radiation in the
range from10MHz to 8GHz
The non-directional electric field antenna
and high sensitivity also allow
measurements of electric field strength in
TEM cells and absorber rooms.
The unit of measurement and the
measurement types have been selected to
be expressed in units of electrical and
magnetic field strength and power density.
At high frequencies, the power density is of
particular significance. It provides ameasure
of the power absorbed by a person exposed
to the field. This power level must be kept as
low as possible at highfrequencies.


HF-B8G
EN-7

The meter can be set to display the
instantaneous value, the maximumvalue
measured or the average value.
Instantaneous and maximum value
measurements are useful for orientation,
e.g. when first entering an exposed area.
For isotropic measurements of
electromagnetic fields.
Non-directional (isotropic) measurement with
three-channel measurement sensor.
High dynamic range due to three- channel
digital results processing.
Configurable alarm threshold andmemory
function.
Easy & safe to use
Low battery detector ”.
Manual data memory storing: 200 data sets.
Memory Over load indication“OL”.

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7 Identifying Parts
1. RF Three-Axissensor.
2. Liquid-crystal LCD.
3. Hold /ALARM / Up button.
4. MAX / AVG/ Rightbutton.
5. UNIT / ENTERbutton.
6. XYZ / MEM / Down button.
7. Power button.
8. REC/ time / Leftwardbutton.
9. SET button.
10. Tripod mounting screw.
11. Battery cover.

HF-B8G
EN-9
8 LCD Description
1. Primarydisplay
2. Hold symbol
3. Analogue bar graph
4. MAX symbol
5. AVG symbol
6. Low batterysymbol
7. x1x10x100 unit
8. X.Y.Zunit
9. ALARM sound
10. mV/m, V/m (E)
11. µA/m , A/m unit(H)
12. µW/m2/ µW/cm2unit
13. E Symbol
14. Auto power off symbol
15. Time unit
(month: day)
(hour: minute)
(second)
16. MEM reading
symbol
17. SET symbol
18. REC symbol
19. CALsymbol
20. Secondary
display
21. BUZZER symbol
22. Decimal point

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HF-B8G
9 Specifications
9.1 General specifications
Display type : Liquid-crystal (LCD),4-1/2
digits maximum reading 19999.
Measurement method : Digital, Tri axis
measurement.
Directional characteristic : Isotropic,
Tri axis.
Measurement range selection : 
one continuous range.
Display resolution : Display resolution:
0.1mV/m, 0.01V/m, 0.1µA/m,
0.1mA/m,0.001µW/ m2, 0.01mW/ m2,
0.001µW/cm2.
Setting time : typically 1.5s (0 to 90%
measurementvalue.)
Sample rate : 1.5 times persecond.
Sample rate : 3 times per second.
Audible alarm : Buzzer.
Units: mV/m, V/m, µA/m, mA/m, µW/m2,
mW/m2, µW/cm2
Display value : Instantaneous measured
value, maximum value, average value,
or maximum average value.

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HF-B8G
Alarm function : adjustable threshold with
ON / OFF
Calibration factor CAL : adjustable
Manual data memory and read storage: 
200 data sets.
Batteries : 9V NEDA 1604, IEC 6F22 
orJIS 006P
Battery life : Approximately 3hours.
Auto power off : Default time 15minutes.
Adjustable threshold 0~99 minutes.
Operating temperature range :
0°C to + 50°C.
Operating humidity range :
25% to 75 % RH
Storage temperatures range: 
-10°C to +60°C.
Storage humidity range : 0% to 80%RH.
Dimensions : 370 (L)x80(W)x80(H) mm.
Weight (including battery) : Approx.400g.
Accessories : User’s manual, 9V battery,
carrying case.

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HF-B8G
EMC
This tester was designed in accordance with
EMC Standards in force and its compatibility
has been tested in accordance with
EN61326-1 (2006).
9.2 ElectricalSpecifications
Unless otherwise stated, the following
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 : +23 °C±3°C.
Relative air humidity25%~75%
Sensor type : electrical field(E).
Frequency range : 10MHz ~ 8 GHz.
Specified measurement range:
CW signal (f >50MHz) : 38mV/m to 11.00
V/m, 53.0uA/m to 28.64mA/m 0.1uw/m2 to
309.3mW/m2, 0uW/cm2 to 30.93mW/cm2
Dynamic range : Typically75dB
Absolute error at 1V/m and2.45GHz:
± 1.0 dB.

EN-13
HF-B8G
Frequency response :
Sensor taking into Account the typical CAL
factor :
±2.4dB(50 MHz to 1.9 GHz, 3.5 GHz to
8GHz).
±1.0dB (1.9 GHz to 3.5GHz).
Isotropy deviation : Typically ± 1.0 dB
(2.45GHz).
Overload limit : 0.083 mW/cm2,(17.7V/m)
per axis.
Overload limit : (0 to 50°C): ±0.2dB.
9.3 Units ofMeasurement
The meter measures the electrical component
of the field; the default units are those of
electrical field strength (mV/m or V/m). The
meter converts the measurement values to the
other units of measurement, i.e. the
corresponding magnetic field strength units
(µA/m or mA/m) and power density units
(µW/m2 , mW/m2 or µW/cm2 ) using the
standard far-field formulate for
electromagnetic radiation.

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HF-B8G
9.4 Result modes
The bar graph display always shows the
instantaneous measured dynamic range
value. The digital display shows the result
according to one of three modes, which can be
selected. Instantaneous : The display shows
the last value measured value measured by
the sensor, no symbol is displayed.
Maximum instantaneous (MAX) :
The digital display shows the highest
instantaneous value measured, the “MAX”
symbol is displayed.
Average (AVG) : The digital display shows the
average value measured, the “AVG” symbol is
displayed.
Instantaneous mode is the default setting
when the meter is turned on. The following
graph shows of Instantaneous (actual), MAX
(hold), AVG and MAX/AVG:

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HF-B8G
MAX/AVG:
9.5 Measurement Procedures and
Preparation
Battery loading : Remove the battery cover on
the back and put a 9V battery inside.
Battery replacement : When thesymbol of
“ ” appears on the LCD display, the battery
should be replaced with a newone.
The battery symbol will be displayed on the
LCD, this is a battery low indicator.
9.6 Power key：
Press ” key turn ON the meter.
Press ” key again to turn power OFF.

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HF-B8G
9.7 Data Hold Key:
Press the ” key to go into hold mode, and
“HOLD” appears on the screen to allow you to
read the data.
Press ” this key once again to deactivateit.
>> >> >
9.8 Units Key:
Change units with the “UNITS” key as follows
Electric field strength (V/m)
Computed magnetic field strength (mA/m).
Computed power density (mW/m2 ).
Computed power density (μW/cm2 ).
Press ” key to change the units: mV/m,
V/m, µA/m, mA/m, µW/m2, mW/m2, µW/cm2.