Atsugi, Japan
Atsugi, Japan

Anritsu Corporation is a Japanese company specializing in the test and measurement equipment market. Products include network call trace, service assurance, customer experience management, microwave, radio frequency , and optical signal generators, spectrum analyzers, and network analyzers. It was formed with the merger of two companies, the Annaka Corporation and Kyoritsu Electric in Japan in 1931. In 1990 Anritsu acquired Wiltron Company in the United States. Net sales in FY2008 were ¥84 billion . It has been listed on the Tokyo Stock Exchange since 1961 . As of 2009, it employed 3700 employees in 20 countries. Wikipedia.


Time filter

Source Type

To eliminate a need for polarization adjustment, to simplify a configuration, and to make a configuration at low cost. Wavelength swept light is provided to a measurement-target optical fiber having an FBG with a chirped grating interval. A polarization multiplexing unit generates polarization multiplexed reference light by multiplexing first reference light and second reference light, which are swept in a wavelength in the same manner as wavelength swept light and have polarizations orthogonal to each other. Polarization multiplexed reference light is input to combine means along with reflected light from measurement-target optical fiber and is made to interfere with reflected light. A signal processing unit performs Fourier transform processing on the digital signal by dividing a time domain into a plurality of periods, and synthesizes the Fourier transform results on a distance axis to obtain a measurement result of orthogonal polarization components of reflected light.


A mobile communication terminal test device communicates with a mobile communication terminal to perform a test operation. The test device includes a test analysis unit responsive to a user-selected test from a data store, the test analysis unit determining an execution path of each of a plurality of test operations in the test log corresponding to the user-selected test scenario and comparing the execution path of each of a plurality of test operations to the plurality of execution paths of the user-selected test, and displays a screen comparing the execution path of each of a plurality of test operations to the plurality of execution paths of the user-selected test on a display unit.


A mobile communication terminal test device communicates with a mobile communication terminal to perform a test operation. The test device comprises a display unit, a test engine unit that determines a test procedure to be executed as part of the test operation and communicates the test procedure to a test execution unit which executes the test procedure and returns an outcome of the test procedure execution to the test engine unit, and a display control unit that displays a screen indicating a hierarchical trace of executed test procedures and their outcomes, on the display unit.


Patent
Anritsu Corporation | Date: 2015-02-25

According to one embodiment, a test apparatus includes a reception buffer configured to store uplink data, a transmission buffer configured to store downlink data, an arithmetic processing module configured to execute reception arithmetic processing on the uplink data read from the reception buffer, and to execute transmission arithmetic processing to generate downlink data and store the generated downlink data in the transmission buffer, and a management module configured to provide, under a first predetermined condition, the arithmetic processing module with a first instruction to execute the reception arithmetic processing, and to provide, under a second predetermined condition, the transmitting/receiving module with a second instruction to transmit the downlink data stored in the transmission buffer.


Provided are a noise floor level reduction device and a noise floor level reduction method capable of reducing a noise floor level. A transmission power measurement system 10 is installed before a signal measurement device 20 including a noise floor level measurement unit 22 that measures a noise floor level, and a measurement unit 24 that subtracts the noise floor level from a level of a signal from a DUT 2 to calculate a level of a signal after subtraction, and includes an LNA 17 provided between the DUT 2 and the signal measurement device 20 for amplifying the signal from the DUT 2, and a termination resistor 16 that terminates an input of the LNA 17, and the termination resistor 16 terminates the input of the LNA 17 in a case in which the noise floor level measurement unit 22 measures the noise floor level.


Patent
Anritsu Corporation | Date: 2016-06-14

According to one embodiment, a fading simulator which conducts a fading test on a mobile communications terminal configured to receive radio signals containing respective baseband signals, includes reception modules which receive the radio signals, convert frequencies of the radio signals, and extract the baseband signals from the radio signals, respectively, reproduction processing modules which perform reproduction processing on the baseband signals extracted by the reception modules, respectively, to produce new baseband signals, a fading arithmetic module which perform fading processing on the new baseband signals produced by the reproduction processing modules individually to produce fading signals, and transmission modules which convert the fading signals produced by the fading arithmetic module into radio signals, respectively, and output the radio signals as test signals to the mobile communications terminal.


Patent
Anritsu Corporation | Date: 2015-12-30

An object of the present invention is to provide a fading simulator that is capable of performing designated fading processing without depending on a method of an operators input connection. The fading simulator 20 includes an arithmetic operation unit 22 that performs fading processing on m baseband signals that are received in m first input terminals to which identifiers are attached respectively, and thus outputs the fading-processed n baseband signals, and an input control unit 21 that receives a transmission signal which includes a pair of the identifier and the baseband signal, in m second input terminals, detects the identifier which is included in the transmission signal, and thus inputs the baseband signal that is paired with the identifier, into the first input terminal to which the same identifier as the identifier that is included in the transmission signal is attached.


A mobile terminal testing apparatus that is capable of simulating a state where an electric wave to multiple mobile communication terminals causes interference. The mobile terminal testing apparatus includes: a scenario processing unit that controls each unit of an apparatus in order to perform each procedure for testing according to a test scenario; a cell initialization processing unit that initializes a cell that is subject to interference and an interfering cell that interferes with the cell that is subject to the interference, with a parameter for the cell that is subject to the interference, and a parameter for the interfering cell; and a cell combination processing unit that adjusts output levels of a signal of the cell that is subject to the interference and a signal of the interfering cell and performs combination in order to simulate an interference state.


A frequency synthesizer 11a outputs a periodic signal r(t) at a frequency detuned by a predetermined frequency f [Hz] from a frequency of 1/integer of a frequency of a reference clock signal f0 synchronized with a signal to be measured ws. A first sampler unit 12 samples the signal to be measured ws at a timing of the trigger signal CLK. A second sampler unit 13a samples an I signal I(t) at the timing of the trigger signal CLK. A phase shifter 13b outputs a Q signal Q(t) obtained by shifting a phase of the reference clock signal f0 by 90. A third sampler unit 13c samples the Q signal at the timing of the trigger signal CLK. A correction value calculation unit 13d calculates a correction value t(n) based on sampling data I(n) and Q(n) and a set value t(n) of a sampling time.


Patent
Anritsu Corporation | Date: 2016-02-12

To provide an OFDR device and an OFDR method capable of measuring a large strain distribution or a large temperature distribution within a narrow measured wavelength range by using an FBG. A measured optical fiber 13 includes a plurality of gratings that is overlappingly formed in order to reflect a plurality of different wavelengths. An OFDR device 1 measures a strain distribution or a temperature distribution of the measured optical fiber 13 on the basis of the result of detection by a measuring range non-inclusion detector 26 that detects gratings of the plurality of gratings of which the reflected wavelengths are not included in the measured wavelength range from the peak wavelengths detected by a peak wavelength detector on the basis of measured wavelength range non-inclusion detecting condition data (Ds) in which a predetermined measured wavelength range is set in the direction of the axis of the peak wavelengths.

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