Radiometric devices >> selective voltmeters, voltage disturbance recorders and instrumentation antennas

SMV 11

44 499 RUB
17 799 UAH
13 pieces

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Microvoltmeter SMV 11 (SMV-11, SMV11, СМВ 11, СМВ-11, СМВ11)
Is used for selective high-frequency sinusoidal voltage measurements - (from -20 dB mkV to +125 dB mkV).
The device measures the figurative impulsive voltage noise of the following types:
quasi-peak value «QP», the peak value «P», the effective value «RMS».
Has an output for generator Ri = 50Ohm, EMF = 100 dB mkV.
Selective microvoltmeter SMV11 is single band frequency receiver in a range from 9 kHz to 30 MHz. It is designed for selective measurements of high-frequency sinusoidal voltage and quasi-peak figurative impulsive voltage noise measurements.
It is used as an radio interferencemeasuring instrument and it meets the requirementsof MSKRContent-I recommendations and the conditionsdevelopedon thesestandards, such as CEB - CT -CEB -502, GDP - TGL 20 885 l. 2
Selective microvoltmeter SMV11 is  adapted for  ordinary selective voltage measurement in a range from -20 dB mkV to +125 dB mkV, without any additional accessories.         Its high dynamic selectivity and sharp intermediate frequency filters provide measurement of low-voltages near strong external signals. 7 types of indications, 3 high frequency bandwidths and a number of measuring outputs, makes the signals measuring process much easier. The device measures thefigurative impulsivevoltagenoiseofthe following types: quasi-peak value («QP»), the peak value («P»), the effective value («RMS»). The receiver is automatically poweredinto optimaloperating condition by an internalprogram for alltypes ofindications.
Microvoltmeters SMV11 have a generator output Ri = 50 0hm; emf = 100 dB mkV.  It is possible quickly and easily to measure the active and passive quadripole without any additional device, due to large dynamic range, generator frequency equation and received signal frequency.  Generator Output can replace an additional measurement transmitter, in many measurement assignments (for example, when measuring reflection coefficient).
Receiver’s selective sections are switching automatically with indicated frequency, but they can switch off if necessary. Selective microvoltmeter SMV11 can be also used for frequency-analytical tasks with the help of external oscillatory signal and suitable visual output device.
Microvoltmeter SMV11 and field strength measuring antenna FMA 11 form a FSM 11 set, for radio interference measurements.
           This measuring set as basic device corresponds to MCKP conditions and standards, developed on their base for radio interference measurement technique. Antenna is designed in such way that field components can be optionally defined as with the help of frame or whip antennas. Switching of broadband transmission circuits in antenna are carried out remotely from receiver. This greatly simplifies field strength measurement.
If selective microvoltmeter SMV11 is combined with equivalent network NBB12  or NBB 13, they form measurement set for voltage disturbances measuring regulation that arise in electrical appliances supply.
Together with probes TK 11 and TK 12 high-voltage networks interference measurement is possible.   
Current measurement probes expand selective microvoltmeter SMV11 to a measuring set for regulated measurement of current interference in networks. The main area of microvoltmeter SMV11use with mentioned accessories is measuring interference technique in accordance with existing regulations. The main consumers are industry and governmental organizations for compliance regulations and electromagnetic compatibility control of devices and systems.
Microvoltmeter’s SMV11 diversity as a selective voltage measuring instrument with generator output, makes it a rational device in quadripoles measurement in laboratories and test benches.
           Together with measuring antennas, the use of  microvoltmeter SMV11 extends to distribution and supply measurement, antennas and radio control, for assignments in german post office, in transport facilities, radio and television facilities and in commercial radio.
Microvoltmeter SMV11 is immediately ready for use and saves its settings in difficult woring conditions such as high air humidity, freezing temperatures -25 ° C, external electromagnetic fields. Power supply can be selectively carried out by network and battery.
Technical characteristics
Range from 9 кHz to 30 МHz
Installation continuous
Indicating digital indication
Resolution 100 Hz or 1 kHz for friquency > 10 MHz
Indication accuracy of frequency after internal calibration ±(5·10-4·fe + 200 Hz)
Indication configuration exist
Automatic frequency control, switchable on and off  
Mode "receiver with APCH"  input signal friquency
Mode "lock" internal, quartz stable,frequencycomparison
Mode "generator with APCH " subsequentsynchronous generatoradjustment on the received signal frequency
Indicating types

AV I - the averagelow-noise value

AV II  - the averagelowdistortion
AV log -  the average logarithmic value
QP I - quasi-peakvaluefor a frequency range from 9 kHz to 150 kHz
QP II  - quasi-peakvaluefor a frequency range from 0.15 to 30 MHz
Р - peak value
RMS - effective value
Gradationof measurement limit 5 dB
Measurement indication withthe help of indicatingdeviceand a digitalindicationsofthe totalattenuationof high andintermediate frequencydivider
Scale limits of indicating device  
Measurement limit  
AV I, AV II 10 dB (additional eror ±0.3 dB in the range from 0...<5 dB about 7 dB)
QP I, QP II, RMS, Р 5 dB
AV log 40 dB
Indicating limit  
AV I, AV II, QP I, QP II, RMS, P 15 dB
AV log 45 dB
Measurement error See table 3
Voltage calibration with an internalgeneratorfor anymeasured frequency
Receiver input  

50 Ohm

Symmetrical inputwith an impedance of600 ohmsin the frequency range
from 0.009 to 0.15 MHz is possible with an external transforming unit (600 ohm symmetrical and
50 ohms unsymmetrical). 
Connection type high-frequencyslot3/7, Tg 25 602transition tothe slot50in accordance with GOST13317-730m​​withTTLadapterStandard3254.0001
Reflection coefficient
within the high-frequency voltage divider damping <10 dB
r ≤0.1
At decrease ofhigh-frequency voltagedivider<10 dB r ≤ 0.33
Maximum input voltage  
AC voltagein the frequency range of received signal Uэфф≤1.8V
DC U=≤1.8V
Selectivity characteristics  


Corresponds to СТ-СEВ 502 for frequencies - 150 kHz
Bandwidth9kHz Corresponds to СТ-СEВ 502 for frequencies - 150 kHz
Bandwidth1.7kHz Bandwidth 1.7kHz ≤6 kHz
decrease 3 dB 60 dB
PCH Stability ≥ 80 dB
Image channel stability ≥70 dB
receptionsidestability inindicationtypes:AV II, QP I, QP II, RMS ≥ 70 dB with increasing ofinput voltagefor 50dBtowards the terminalvalue ofthe indicatordevice
Sidechannels suppression  
For impulsevoltage ≥ 36 dB
According to СТ-СEB 502 with indication type QP I and QP II (with increasing ofinput voltagefor 50dBtowards thefinal value ofthe indicatordevice)
For asinusoidalvoltagewithan indication typeAV II, QP I, QP II, RMS
2 equalymodulated signals U1 = U2with a frequencyinterval
(f1-f2) = 100 kHz forms a tension interference frequency 2f1 - f2 or
2f2 - f1 with intervallevel of≥ 70dB of relative output signals
- 70 dB (with increasing ofinput voltagefor 50dBtowards the scalevalue ofthe indicatordevice)
Protectionfrom the interfering signals effects  
Protectionfrom the influence external fields o  
For frequencies fe ≤ 150 kHz 10 mA/m (interference indication  - 0 dB mkV)
For frequencies fе > 150 kHz 3 V/m (interference indication  - 0 dB mkV)
Protection fromnetwork interference ≥90 dB
Synchronous generator output  
Output voltage U = 100 dB mkV (Z = 50 Ohm)
  z = 50 Ohm, |r| ≤ 0.1
Intermediate frequency Output fz = 200 kHz

edc ≥ 20 mV

 (+10 dBindicationforan indicatingdeviceforindications ofAV I type).Overload resistance is up to30 dB, Ri = 50 Ohm
Oscilloscope output, line.

edC= 100 mV ±20%

(+10 dBindicationforan indicatingdeviceforindications of"AV I type "). Ri = 10 kOhm
Oscilloscope output, log.

edC= 100 mV ≥20%

(+35 dBindicationforan indicatingdeviceforindications of "AV log" type). Ri = 10 kOhm
Recorder output

edC= 500 mV ±20%

(+10 dBindicationforan indicatingdeviceforindications of"AV I type "). Ri = 1 kOhm
Output powerat low-friquency output 50 mV, Ra = 4 Ом (+10 dBindicationforan indicatingdeviceforindications of"AV log" type)
Controlling antenna output for FМА 11 antenna connection
Externaloscilloscope output  
Friquency from 70.209 to 100.2 MHz
Input voltage u = 0.2-0.6V, Z = 50 Ohm
Power andElectrical Safety  
Power supply  
Network voltage 220 V/110V +10%/-15%
Network frequency from 49 to 62 Hz and from 388 to 428 Hz
Power consumption ≤55 VA
Protection class II - TGL 14283/07
Power from battery  
Working voltage 24V +10%/-15%
Current consumption ≤2 A within 24 V
Continuous operating time continuous work
Ambient conditions  
Protection level lp 31 – TGL CEB 778 drip and solid -proof, ≥ 2.5 mm
Climateoperation requirements  
OperationInstallation Category Conditions II TTL 9200/01 outdoorsunder a canopy exploitation is allowed
Temperature range from -25 to +45 °С
Temperature/ humidity naturalclimaticconditions 30 °С, 95% relative humidity
The naturalclimatic conditionsduring transportation and storage  
Transportation in packaging  
Ambient temperature range from -40 to +55 °С
The maximum permissiblerelative humidity 95%
The maximumwater pressure 4000 Pa
The maximum transportation time 4 months
Storing without package  
Ambient temperature range from +5 to +40 °С
The maximum permissiblerelative humidity  
The maximumwater pressure 2600 Pa
The maximum storing time

12 months

taking into accountmaintenance instructionsandtesting guidance
Technical conditionsfor operation  
Device without package TGL 200-0057/4
Exploitation group G I
the deviceadjustedfor mobileoperation atlow vibration andshock load
The device isin 11GBcontainerwith amaximum shocksload on specialUSSR request verticallyto operation position

2.5 msec., 50 g, 2000 shocks

6.0 msec., 10 g, 20000 shocks
10.0 msec., 6 g, 88000 shocks
Weight without package 26 kg
In container 56 kg
Width 485 mm
Height 160 mm
Depth 600 mm
Table 2


Bandwidth, KHz Lower measurement limit, dB mkV Upper limit, dB mkV
fe ≤ 50kHz fe ≥ 50 kHz fe ≥ 100 kHz
AV I, AV log 0.2 -10 dB mkV -15 dB mkV (-20 dB mkV) -15 dB mkV (-20 dB mkV *5) +125 (sinusoidal voltage)
1.7 -2 dB mkV -12 dB mkV -12 dB mkV
9 - - -6 dB mkV
AV II 0.2 -10 dB mkV -15 dB mkV (-20 dB mkV) -15 dB mkV (-20 dB mkV *5) +110 (sinusoidal voltage)
1.7 -2 dB mkV -12 dB mkV -12 dB mkV
9 - - -6 dB mkV
QP I 0.2 -10 dB mkV -15 dB mkV (-20 dB mkV) -15 dB mkV (-20 dB mkV *5) +100 *4
+90 *3
QP II 9 - - 0 +110 *4
+100 *3
RMS 0.2 -10 dB mkV -15 dB mkV (-20 dB mkV) -15 dB mkV (-20 dB mkV *5) +100 *4, *3
1.7 -2 dB mkV -12 dB mkV -12 dB mkV +110 (sinusoidal voltage)
9 - - -6 dB mkV +100 *4, *3
P 0.2 0 -10 dB mkV -10 dB mkV +115 *4, *3
1.7 - - - -
9 - - +10 dB mkV +115 *4, *3
   Table 3.
Indicating type Bandwidth, V/MHz Sinusoidal voltagemeasurement range. Approx. +5…+10dB
relativetemperature δВ=+23±2°С

Additionalerror intemperature range

-25…+45°С about δВ
Additional voltagenoise error. SWM11 maximum.
AV I, AV II 0.2 1.5 dB 0.25 dB /10°С 1 dB at the lower measurement limit
AV log 0.2 4 dB 1 dB at the lower measurement limit
QP I 0.2 1.5 dB 1 dB
QP II 9 1.5 dB
RMS 0.2 1.5 dB
P 0.2 1.5 dB
Indicating type Bandwidth, V/kHz Additional impulsevoltageerrorfor indicators measuring range +5…+10 dB

In temperature range


Additionalerror intemperature range

δU= -25…+5°С
Withthepulse repetition reference fpb Withother relativepulsed frequencies fpb
AV I, AV II 0.2 - - -
AV log 0.2 - - -
QP I 0.2      

Photos: SMV 11

SMV 11 microvoltmeters image.
SMV 11 microvoltmeters image.
SMV 11 front view.
SMV 11 front view.
SMV 11 side view.
SMV 11 side view.
SMV 11 rear view.
SMV 11 rear view.
SMV 11 overhead view.
SMV 11 overhead view.
SMV 11 bottom view.
SMV 11 bottom view.

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