Tenmars TM-195 User manual

TENMARS
RF three-Axis Field
Strength Meter
TM-195
User's
Manual
CE
HB2TM1950005

9.8 Alarm ON/OFF Setup................ .. .. ................. 16
Ta bl e of C on tents 9.9 Viewing Data Records .......
.. .......................... 17
1
In troduction .. .............. .. ...... .. .................................. 1 9.10 Clock LCD Display.........................................
17
2 Simple method ofoperation .............................. .. ... 2
10 Setup Mode .. ............................ .. .. ...................... .. 18
3 Fundamentals................... .. . ... . .. . ... ............. .. .......... 3
10 .1 Clock Setup-1 .............................................. .. 18
3.1 Electric fjeld strength (E): ................................. 3
10 .2 Setting the alarm limit value (ALARM)-2 .. .... .. 19
3.2 Magnetic fjeld strength (H):.............................. 3
10 .3 DEL data logger memorysetup-3 .. ................. 20
3.3 Power density (S):
.. ........................ .. ...... .. ........ 4 10.4 A
na logue bar graphsetup-4 ........................... 21
3.4 The characteristic ofelectromagnetic fjelds: .... 4 10.5
Au to Power Off Time function setup-5 ........... 22
4 Application...... .. . ... . .. ............................................... 5 10.6 Setting the calibration factor (CAL)-6.............
22
5 Features .............. .. ................................................. 6 11 Making measurements ..................
.. .......... .. .. ....... 24
6 Identifying Parts....................................... .. ............. 7
12 Short-term measurements.................................... 24
7 LCD description...................................................... 8
13 Long-term exposure measur em en ts .. ................ .. 25
8 Specifjcations ........................
.. ............................... 9 14 SA
FE TY I NF ORMATION .................................. .. . 26
8.1 General specifications ..................................... 9 15 SAFETY INFORMATION
.. .. ................................. 27
8.2 Electrical s pe ci fi cations.... .. .... .. ...................... 10
16 Battery replacemenl.................. .. ......................... 28
8.3 Units of measuremenl................. ... ............... .. 11
17 Safety Precaution .................................. .. .... .. ....... 28
8.4 Result modes..........,....................................... 12
18 End of life ....................................... ...... .......... .. .. .. 28
9 Measurement Procedures and Preparation .........
13
9.1 POWER button : ........................................... 13
9.2 Data hold button:............................................ 13
9.3 Units button:................................................... 14
9.4 MAX /
AVG Record: .. .................. .. .... .... ...... .. . 14
9.5 Manual data memory storing .......... ........ ....... 15
9.6 Backlight Display and Reading
in The Dark ... 16
9.7 XYZlCALL: ..................................................... 16

Axis RF Meter Quick Start Guide
T hi s meter has many capa bi lities, including
memory, a
la rm , date/time, average etc. which will
req uire so me 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 XYX/MEM button unt il a ll three
(XYZ) letters are displayed on
th e screen
(to the left
of the main number.
4. Press UNIT/ENTER
bu tton 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!
TE N MARS
TM-195
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
50Mz-3 .5 GHZ.
2 Simple a method of ope ra tion
Press ,,@ >,button to power on . To change
measuring
un it (mV/m), push "@ ,, button to
change the unit. Electric field strength (V/m).
Computed magnetic field strength (mAIm).
Computed power density (mW/m2). Computed
power density
(j.JW/cm
2).
Press "@ "this key to change sensor axis
selector
:" AII axi s" -;. "X axis "-;. " Yaxis " -;. "Z
axis".
2

TeNMARS
TM-195
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 sense organs
perceive nothing.
3.1 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.
3.2 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 (Alm). In far field situations,
one can calculate the magnetic field from the
electric field value. This meter can display the
calculated magnetic field strength.
3
Te NMARS TM-195
3.3 Power density (5):
Power per unit area normal (perpendicular) to the
direction
of propagation, usually expressed in
units
of Watts per square meter (W/m2) or, for
convenience, units such
as mill Watts per square
centimeter (mW/cm2).
3.4 T he characteristic of electromagnetic
fields:
Electromagnetic fields propagate as waves and
travel
at the speed of light (C). The wavelength is
proportional to the frequency.
" (wavelen
gt h) = 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 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 on
1/ .
4

4
TeNMARS
TM-195
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 strength measurement.
• Mobile phone base station antenna radiation
power density measurement.
• Wireless communication applications
(CW, TDMA, GSM, DECT).
• RF power measurement for transmitters.
• Wireless lAN (Wi-Fi) detection, installation.
•
Spy camera, wireless bug finde r.
• Cellular /Cordless phone radiation safety level.
Microwave oven leakage detection.
•
Personalliving environment EMF safety.
5
TeNMARS
TM-195
5 Features
• The meter is a broadband device for
monitoring high- frequency radiation in the
range from 50MHz to 3.5GHz
• The non-directional electric field antenna and
high sensitivity also a
ll ow measurements of
electric field strength in TEM cells and
absorber rooms.
• The auto-ranging units
of measurement and
the measurement types have been selected to
expressed in units
of electrical and magnetic
field strength and power density.
• At high frequencies, the power density is of
particular significance. It provides a measure of
the power abs or bed by a person exposed to
the field. This power level must be kept
as low
as possible at high frequencies.
• The meter can be set to display the
in stantaneous value, the maximum value
measured or the average value.
• Non-directional (isotropie) measurement with
,three-axis measurement sensor.
• High dynamic range due to three- channel
digital results processing.
• Co
nf igurable alarm threshold and memory
functio
n. ., "-.
• Easy & safe to use'
•
low battery detector "1-+1".
• Over load indication "Ol ",
6

6
TeNMARS TM-195
Te N MARS
TM-195
Identifying Parts 7 LCD description
1. Primary Display 13. E symbol
1.
RF three-Axle Sensor. 2. Hold symbol 14.Auto power off
2.
Liquid-crystal LCD.
3. Analogue bar graph symbol
3. MAX I AVG I R Button. 4. MAX symbol 15. Time unit (month:day)
4.
Record I Time I L Button. 5. AVG symbol (hour: minute)
5.
Power Button.
6. Low battery symbol (second)
7. x1x10x100 unit 16. MEM reading symbol
6. UNITI ENTER switch Button. 8. X.Y.Z unit
'-. 17. SET symbol
7.
Hold I ALARM on/offI Up Button. 9. ALARM unit 18. REC symbol
8. BacklighUSet
10 . mV/m,V/m (E) 19. CAL symbol
9.
XYZ I MEM I Down Button.
11 . !JA/rn mAlm unit (H) 20. Secondary Display
10. Tripod mounting screw.
12. !JW/m, !JW/cm2unit
21 . BUZZER symbol
11 . Battery cover . 22. Decimal point
7 8

TeNMARS TM-195
8 Specifications
8.1 General specifications
• Display type: Liquid-crystal (LCD), 4-1/2 digits
maximum reading 19999.
• Measurement method : Digital, triaxial
measurement.
• Directional characteristic : Isotropic (triaxial).
• Measurement range selection: one continuous
range.
• Display resolution: 0.1mV/m,
0 . 1~Alm,
0.001~W/m2, 0.001~W/cm2
• Setting time: typically 1.5s
(0 to 90% measurement value.)
• Sampie rate: 3 times per second.
• Audible alarm: Buzzer.
• Units: mV/rn, V/rn,
~Alm, mAlm, ~W/m2,
mW/m2, ~W/cm2
• Display value : Instantaneous measured value,
maximum value, average value, or maximum
average value.
• Alarm function : adjustable threshold with ON /
OFF.
• Calibration factor
(,:AL : adjustable.
• Manual data memory and read storage:
200 data sets.
• Batteries: 9V NEDA 1604, IEC 6F 22 or JIS 006P.
9
Te NMARS TM-195
• Ba ttery life : Approximate 15 hours.
• Auto power off : Default
ti me 15 minutes.
Adjustable threshold
0-99 minutes.
• Operating temperature range:
O°C to + 50°C.
• Opera
ti ng humidity r ange: 25% to 75% RH.
• Storage temperatures range: -10°C to +60°C.
• Storage h
um idity range: 0% to 80% RH.
• Dimens
ions: 60( L) X60(W) X195(H) mm.
• Weight (including battery) : Approx. 200g.
• Accessories : User's manual, 9V battery,
Ca rrying case.
EMC
This tester was designed
in accordance with EMC
Standards
in for ce and its compatibility has been
tes
ted in accordance with EN61326-1 (2006).
8.2 Electrical specificat io ns
• Unless otherwise stated, the following
specifications hold under
th e following conditions:
• The meter
is located in the far field of a source;
the sensor head
~pO i Q t ed towards the source.
• Ambient temperatu
re : +23°C ±3°C.
• Relative air humidity 25
%-75%3
• Sensor t yp e: electrical field (E).
• Frequency range: 50MHz -3.5GHz.
10

TeNMARS
TM-195
• Specified measurement range:
• CW signal (f >50MHz) :
38mV/m to 20.00 V/m, 53.0uAlm to
53.74mAlm
,0 .1uW/m2 t01 .089W/m2,
0.001 uW/cm2 -1 08.9uW/cm2
• Dynamic
range: Typically 75dB.
• Absolute error at 1V/m and 2.45GHz :
±1.0 dB.
• Frequency response :
• Sensor taking into account the typical CAL
factor :
±2.4dB (50 MHz to 1.9 GHz).
±1 .0 dB (1.9 GHz to 3.5GHz).
• Isotropy deviation :
Typica
ll y ±1 .0 dB (f 2.45GHz).
• Overload limit :
0.42 mW/cm2
(11 V/m) per axis.
• Overload
limit: (0 to 50 °C): ±0.2dB.
8.3 Units of measurement
The meter measures the electrical component of
the field; the default units are those of electrical
field strength (mV/m or V/rn). The meter converts
the measurement values to the other units
of
rneasurement, i.e. the corresponding magnetic
11
TeNMARS
TM-195
field strength units (!JA1m or mAlm) and power
density units
(!JW/m
2, mW/m20r !JW/cm2) using
the standard far-fie
ld formulae for electromagnetic
radiation.
8.4 Result modes
The bar graph display always shows the
instantaneous measured dynamic range value.
The digital display
sh ows the result according to
on e ofthree modes, wh ich can be selected.
Instantaneous : The display shows the last value
measured by the
se nsor, no symb ol is displayed.
Inst
an taneous mode is the default setting when
the meter
is turned on .
Maximum instantaneous (MAX) :The digital
display shows the highest instantane
ou s value
measured so far, the "MAX "symbol is displayed.
Average (AVG) : The digit
al display shows the
average value meas"l!Jed the "AVG" symbol is
displayed. .
The following graph
sh ows of Instantaneous
(actual), MAX (hold), AVG and MAX/AVG:
12

TENMARS
TM-195
9 Measurement Procedures and
Preparation
Battery loading : Remove the battery cov er on the
back and put a 9V battery inside.
Battery replacement: When the low battery
symbol
of "rE:D' appears on the LCD display, the
battery should be
re placed with a new one.
9.1 POWER button :
Press"®"button to power on.
Press"®"button to power off.
9.2 Data hold button:
Press the "(jj!3,, button to go into hold mode, and
"HOLD" appears on the screen to allow you to
read the data.
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TENMARS
TM-195
Press the "(jj!3,, button once again to deactivate it.
~HOLD
~ 'Dnnn
b.:t.UUU
XYZ
oClB:ClB
9.3 Units button:
Change units with the "UNITS" key as folIows.
Electric field strength (V/m)
Computed magnetic field strength
(mNm) .
Computed power density (mW/m\
Computed power density ( j.JW/ cm\
Press "@,, button to change the unit. Possible
units : mV/m, V/m,
j.JNm , mNm, j.JW/m
2, mW/m2,
j.JW/cm
2
1
,"nn"~,"nn" l ,n"" ,""""
1f UUU.u ÜUU. UU Uu.uU Uu.uU
XYZ _XVZ .... XYZ • ..... XYZ. .....
. arms .arm s .DasS .Das S
9.4 MAX I AVG Record:
Press "~,, key to switch to the next display. The
display switches fram
MAX to AVG to MAXIAVG
14

TENMARS
TM-195
and back to MAX.
Press and hold "~"key for 3 seconds to disable
this function.
The maximum averaging storage is up to 99
minutes and 99 seconds. After this period of time,
updating will stop automatically and the
lCD
displays [I .
9.5 Manual data memory storing
Push"~"button, the meter will save the current
measured result, and REC with a number
001-200 will appear.
Manual data memory storing: 200 data sets.
Over load indication :
"Ol".
nn I
nn~
"
Me UU, "
~!C uuc G
"'
UL.
15
TE N MARS
TM-195
9.6 Backlight Display and Reading
in The
Dark.
Press "<.1> key backlight light on. Again Press
,<!> button to power off.
Backlight light turns off automatically after
30
seconds.
9.7 XYZ:
Press" @" this key to change sensor axis
selector :
"AII axis" -- "X axis "-- "Y axis" -- "Z
axis".
/IJI UUUU UUUJJ UUUAJ UUUAJ
XYZ -x _ y _ z
I f" """ '"""" Ü"""""U""""
oD ::DB .D ros oD ros oD ros
9.8 Alarm ON/OFF Setup
Press and hold ,<~>, then press "(fj!ft,, key to
switch the alarm
funcJio~n. The "ALARM"
symbols
in the display indicates that the alarm
function
is on. Press and hold "®,,and "(fj!ft,,
key to turn off the alarm function. When the Alarm
16