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".
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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.
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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

TENMARS
TM-195
sounds, the display shows .,.,.
1 88B 1 88.8
)tu.... xvz.... ___
. S!IBS . S!IBS
9.9 Viewing Data Records
Press hold "®,,button andpress "@,, button
to view the saved data records
Use "@,, or "@,, button to see the next or
previous records
Press "@,, key to close the setup, exit the mode.
i SDD i BBBl BBB
9.10 Clock LCD Display
Press hold "® ,, and "~,, button to select the
display method
of the Year, Month, Date, Hour
and Second.
This meter's clock uses 24 hour time setting.
Default time mode setting is "2010/01/07
00 :
02 " ":00".
17
TE NMARS TM-195
10 Setup Mode
While the meter is on, press hold "®,,button
and
"(!),, button to enter the setup mode.
Press
"(!),, button to scroll through the setup
function.
~
Push "~" button to save setup data.
Note1 : you can
se t up 6 different functions in
setup mode
Def
au lt Glock Setup
setup 1 : Setting the alarm limit value (ALARM).
setup 2 : Glear data logger memory.
setup
3: Analogue bar graph x1 x10 x100.
setup 4 :Auto Power OffTime.
setup 5 : Setting the calibration factor (GAL).
10 .1 Clock Setup-1 ' ....
Press hold "®,,button a nd press ,,(!) .. button
first to enable Glock Setup.
This meter clock
is 24 hour time setting.
18

TENMARS
TM-195
Use "r1J!3" or "@,, to change digit(Hour--+day --+
Month--+year --+ Minute).
se
u~"
U
"~,,
~ or ~ to select the digit you want to
adjust.
Press "@,, button to save the setting.
DateITime default
format: 2009/12/21 12:12.
Year
format: 2000-2099 displayas 00 -99.
'23' '23' '21'
aS:l~~a~ aS:1S22aa~ aCJ:1Q;~n~
. ee. . ~ . .ee.
11CJ:3S"'2nng 11CJ:3S"'2nng 11CJ:3S"'2nng
10.2 Setting the alarm limit value
(ALARM)-2
The alarm limit value determines the level at
wh ich the alarm wil sound. The alarm limit value
can be edited only
in the V/m unit. The ALARM
setting range is fram 0.001 to 999.9 V/rn.
ALARM default is set at 999.9
V/mo
Alarm limit function is only used for total three
axial value. 19
TENMARS
TM-195
While the meter in ON, press and hold ,<~>,
button and press "C!)u button to enter Setup
Mode.
Press "C!)" button 1 more time to enter the alarm
setting mode, the readout value is flashing
and "V/m" unit is displayed.
~ .
Press "~" key to move declmal.
Press
"~,, key to select the desi red digit.
Press
"~,, and "@,, butt on to change digit.
Press "@,, key to store the new setting value
an d exit.
ALARM AlARM ALARM
9.999 99.99 999 .9
XYZ "'- XYZ -.xYZ _
ggfg g9fg gggg gg~
XYZ ... XYZ ... XYZ ... XYZ ...
10.3 DEL data l og~e r memorysetup-3
While the meter in ON, press and hold on ,,@>
button and press "C!)" button to enter Setup
Mode.
20

TENMARS TM-195
Press <~)n button 2 more times to enter clear
""0
data logger memory mode (3.SET) ... DSS will
show
on the display.
To exit without clearing memorv. press "@,, key
To clear the memory, press "@,, then press "@,,
10.4 Analog bar gra ph setup-4
While the meter in ON, press hold "®,,butt on
and press ,<ID" ,button to enter Setup Mode.
Press ,
<!>, button 3 mo re times to : enter
analogue bar g
ra ph se tting mode. The "graph"
unit is flashing. Current setting of
x1 , x1 0, or x1 00
is displayed at bottom ofgraph. X1 is normal
setting. X10
is 10 times more sensitive, x100 is
100 times more sensitive.
rress .@. 0' ·@·to select the desired val"e,
• Xi if
SET
21
TENMARS
TM-195
Press "@,, key to store the new setting value
a
nd exit.
10.5 Auto Power Off Time fu nction setup-5
While the meter is on, press and hold ,{~>,
button and press ,<I>, ,button to enter the auto
power off Setup Mode.
Press
,<I>, button 4 more times.
Press "@,, and
"@,, button to ch ange the
value. Auto power off time default sett
in g is 15
minutes. Maximum auto power off time : 99
mi nu te s. Set value to 00 to disable auto power off.
Press "@,, key to store the new setting value
and exit. The symbol 0 is displayed.
·0 CI SET
..
· 'SSET
."
n.
...t;t
10.6 Setting the calibration factor (CAL)-6
Press hold ,< ~> button and press ,,(~> button to
enter Setup Mode.
22

TENMARS
TM-195
Press '{!)n button 5 more times to enter the
calibration factor setup mode, The CAL setting
range
is from 0.10 to 9.99. Default is 1.00 which is
appropriate for most situations.
Use
"~,, or "~,, to select the desired digit.
Press
"rfj!3 "and "@J,, button to change the
digit
Press "@,, key to store the new setting value
and exit.
Inn
e.uu 00:
Calibration factor (CÄL)
The calibration factor CAL serves to calibrate the
display for a specific frequency when the
frequency
of a single signal is known. The field
strength value measured internally
is multiplied by
the value
of CAL that has been entered and the
resulting value
is displayed. The CAL factor is
offen used as a means ofentering the sensitivity
of the field sensor
in terms of its frequericy
response
in order to improve measurement
accuracy.
23
TENMARS
TM-195
11 Making measurements
Important:
The following effect will be noted with all field
strength meters:
If the sensor is moved quickly, excessive field
strength values could be displayed. This effect
is
caused by electrostatic charges.
Recommendation :
Hold the meter steady during the measurement.
12 Short-term measurements
Application :
Use either the "instantaneous" or the "Max.
instantaneous" mode, if the characteristics and
orientation ofthe field are unknown when entering
an area exposed to electromagnetic radiation.
Procedure :
Hold the meter at arm's length.
Make several measurements at various locations
around your work place or the interested areas as
described above.
This J i~ particularly important if
the field conditions are unknown and possibly
dangerous.
Pay special attention to measuring the vicinity of
possible radiation sources. Apart from active
24

TeNMARS
TM-195
sources, those components connected to a
source
mayaiso act as radiators. For example ,
the cables used
in diathermy equipment mayaiso
radiate electromagnetic energy. Note that metallic
objects within the field may locally concentrate or
amplify the field from a distant source.
13 Long-term exposure measurements
Location
Place the meter between yourself and the
suspected source of radiation. Make
measurements at those points where parts of your
body are nearest to the source
of radiation.
Note : Use the "Average" or" Max average"
modes only when the instantaneous
measurement values are fluctuating greatly.
You may fix the meter to a wooden or plastic
tripod.
25
TeNMARS
TM- 195
14 Safety Information
CAUTION
~ Before making a measurement, check if the
low battery symbol"
r: +1 " is shown on the
displayas soon as the meter
is switched on .
Change the battery if the symbol is displayed
In the case of prolonged storage, it is
p re ferable to remove the battery from the
meter.
Avoid shaking the meter, particularly
in the
measurement mode.
The atmospheric condition outside specified
limits a
nd im proper handling may adversely
affect the accuracy and function ofthe meter.
26

TeNMARS
TM-195
15 Safety Information
&.
DANGER
In some cases, work in the vicinity of powerful
radiation sources can be a risk to your life.
Be aware that persons with electronic implants
(e.g. cardiac pacemakers) are subject to
particular dangers
in some cases.
Observe the local safety regulations
of the
facilityoperation.
Observe the operating instructions for
equipment, which is used to generate, conduct,
or consume electromagnetic energy.
Be aware that secondary radiators (e.g.
reflective objects such as a metallic fence) can
cause a local amplification
of the field.
Be aware that the field strength
in proximity to
radiators increases proportionally to the inverse
cu be of the distance. This means that
enormous field strengths can result
in the
immediate vicinity
of small radiation sources
(e.g. leak
in wave guides, inductive ovens)
Field strength measuring devices can underrate
pulsed signals. Particularly
wi th ra dar signals,
significant measurement errors can arise.
All field strength measuring devices have a
limited specified frequency range. 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.
27
TeNMARS
TM-195
16 Battery replacement
• Turn off the instrument.
• Remove the battery cover
• Repla
ce the battery.
• Insta
ll the battery cover.
Be sure to turn unit off after use to conserve
battery life.
17 Safety Precaution
• For cleaning the instrument use a soft dry cloth.
Never use a wet cloth, solvents or water, etc..
• Operation Altitude : Up to 2000M.
• Operating Environment : Indoors use.
This instrument has been designed for being
used
in an environment of pollution degree 2.
18 E nd of life
Cau ti on : this symbol indicates that
equipment and its accessories shall
)t
-be subject to aseparate collection
and correct disposal
28

TENMARS ELECTRONICS CO., LTD
6F, 586, RUI GUANG ROAD, NEIHU,
TAIPEI
114, TAIWAN.
E-mail: [email protected]
http://www.tenmars.com