ANRITSU CORPORATION

A measurement device includes: a display unit that displays information related to a test; a device control unit group that includes a plurality of device control units controlling control target devices of a control target device group, respectively, the control target device group including the control target devices that each simulate the component of the component group, respectively; a measurement target setting unit that sets a component selected from the component group as a measurement target device; a test case creation unit that creates a test case by displaying a use order of device control units to be used for the test of the measurement target device among the device control unit group on the display unit in a user-settable manner; and a test case execution unit that executes the test case as to the device control units to be used for the test in the set use order.

Provided is a measurement device that makes a screen for setting parameters easy to see, makes it possible to easily find a parameter desired to be set, and can suppress parameter setting errors. A measurement device includes a display unit 15 that displays an image and a control unit 16 that switches a setting screen for a Capability Element parameter between a setting screen for SISO communication and a setting screen for MIMO communication and displays the setting screen on the display unit 15 when communication conforming to an IEEE 802.11be standard is measured.

The measurement apparatus includes a measurement test selection unit that selects a test item to be measured, a measurement condition analysis unit that analyzes a measurement condition of the selected test item, a wiring condition selection unit that inputs a frequency band to be measured and an antenna terminal of a mobile terminal to be used in the frequency band as a wiring condition for the selected test item, a recommended wiring calculation unit that calculates a wiring method that satisfies the wiring condition and the measurement condition and minimizes the number of times of reconnection to the cable between the port of the measurement device and the antenna terminal of the mobile terminal, and a wiring method display unit that displays the wiring method calculated by the recommended wiring calculation unit as a wiring diagram.

The measurement apparatus includes a signal generation unit 11 that generates control data for communicating with a DUT 100 and various data related to measurement, a channel selection control unit 12 that selects one channel to be used from among a plurality of channels supported by the DUT, a wireless communication unit 13 that makes a network connection with the DUT on the channel selected by the channel selection control unit 12 , an RF measurement unit 14 that measures transmission and reception characteristics of the DUT on the channel through which the network connection between the wireless communication unit 13 and the DUT are made, and a control unit 16 that automatically makes a connection on PSC, and then transmits a channel switching instruction to the DUT to switch the connection to Non-PSC, when there is a channel connection instruction from a user and the channel is Non-PSC.

An error rate measurement apparatus includes: a symbol count unit that counts decision results as PAM symbols, and calculates a ratio of a determination frequency of a symbol level of 3 to a determination frequency of a symbol level of 2, and a ratio of a determination frequency of a symbol level of 1 to a determination frequency of a symbol level of 0; and a control unit that adjusts and controls Vth_Middle such that Vth_Middle has the voltage value of the average DC value voltage of the PAM4 signal measured, adjusts and controls Vth_Upper such that the determination frequency of the symbol level of 3 and the determination frequency of the symbol level of 2 have a desired ratio, and adjusts and controls Vth_Lower such that the determination frequency of the symbol level of 1 and the determination frequency of the symbol level of 0 have a desired ratio.

The signal generation apparatus includes a phase difference calculation processing unit that calculates an initial phase difference between a division clock or an external clock selected by a clock selection unit and an initial value of the phase of the toggle pattern based on a relationship between the voltage value acquired by the phase acquisition processing unit and a change amount from the initial value of the phase of the toggle pattern, and a phase shift processing unit that moves the phase of the toggle pattern from the initial value by the initial phase difference such that a phase difference between the division clock or the external clock selected by the clock selection unit and the toggle pattern is within a predetermined range.

An error rate measurement apparatus 1 includes an error count unit 13 a that calculates an error count value by determining an error with respect to expected symbol levels of a PAM signal with two or more levels; and a control unit 6 that adjusts and controls a threshold voltage for each interval between the symbol levels such that a first error count value and a second error count value for each interval between adjacent symbol levels calculated by the error count unit 13 a are close to each other.

A reception sensitivity test control unit 18 provided in a measurement device 1 and configured to execute a reception sensitivity test by repeatedly transmitting and receiving a test signal to a mobile terminal includes a test condition setting unit 18 a that initially sets a test condition including an initial step level SL0 and a starting output level OL0 of the test signal at a start of the reception sensitivity test, and an AI prediction test condition change setting unit 18 b that sets an AI prediction output level OL01, which is AI-predicted in advance by an AI prediction model based on the test condition set by the test condition setting unit 18 a , as a first output level instead of the output level OL0.

The signal generation apparatus includes a phase difference calculation processing unit that calculates an initial phase difference between a division clock or an external clock selected by a clock selection unit and an initial value of the phase of the toggle pattern based on a relationship between the voltage value acquired by the phase acquisition processing unit and a change amount from the initial value of the phase of the toggle pattern, and a phase shift processing unit that moves the phase of the toggle pattern from the initial value by the initial phase difference such that a phase difference between the division clock or the external clock selected by the clock selection unit and the toggle pattern is within a predetermined range.

There are provided a signal generator capable of flexibly increasing the number of taps while realizing high-speed emphasis switching and an emphasis switching method using the signal generator. A signal generator includes: an emphasis addition circuit including at least one finite impulse response (FIR) filter unit that generates an emphasis waveform pattern by adding an emphasis to a pattern of a pulse amplitude modulation (PAM) signal including multi-values which are two or more values; and a tap value setting unit that switches M tap values C(0), C(−1), . . . , and C(1−M) and sets the M tap values C(0), C(−1), . . . , and C(1−M) to each FIR filter unit according to an emphasis switching request from a DUT 100 . The FIR filter unit is configured on an FPGA or an ASIC.