Communication Test Instrument Analysis

The rapid development of the communications industry has also expanded the demand for general-purpose test instruments such as digital storage oscilloscopes . Distortion of signals transmitted by the communication network will reduce the quality of communication or even terminate it. The oscilloscope is the most effective signal analysis instrument.

The development of communication systems will increase the demand for new arbitrary waveform generators. For example, the baseband CDMA signal generated by a general-purpose arbitrary waveform generator can be used to test the low-noise amplifier chip of a CDMA mobile phone after modulating the signal of the RF signal generator . The communication satellite tone generated by the arbitrary waveform generator can be used to test satellite communication ground stations, etc.

Aeroflex SGD digital vector signal generator

A new generation of full touch screen 3GHz/6GHz digital vector signal generator, built-in embedded Windows XP platform adopts the ultra-low phase noise frequency synthesis technology FLNS with Aeroflex patented technology, providing extremely excellent phase noise index at an extremely fast frequency setting speed of 100us: -135dBm/Hz (1GHz, 20kHz offset) Fully supports the generation of most signal formats, including AM, FM, PM, Pulse, ASK, FSK, PSK, QAM, GSM, EDGE, WCDMA, CDMA 2K, TD-SCDMA, WIMAX, WLAN, LTE-TDD, LTE-FDD, Bluetootha Built-in dual-channel arbitrary waveform generator, sampling space up to 4GBytes bytes (1G sampling space), supports embedded IQ Creator waveform editing software, compiled waveforms can be edited and played back at the same time.

Tektronix MDO4000 Mixed Domain Oscilloscope

The world's first MDO4000 mixed domain oscilloscope series provides both oscilloscope and spectrum analyzer functions in one instrument, helping engineers capture time-correlated analog , digital and RF signals, gaining complete system-level insights and helping them quickly solve complex design problems. It provides a unique toolset that helps engineers save days or even weeks of debugging time.

At the same time, the MDO4000 goes far beyond the capabilities of traditional spectrum analyzers, allowing users to capture time-correlated analog, digital, and RF signals on 4 analog, 16 digital, and 1 RF channels. The RF input frequency range is up to 6 GHz and provides ≥ 1 GHz capture bandwidth at all center frequencies, which is 100 times higher than typical spectrum analyzers. Users can even see up to 4 decoded serial and/or parallel buses at once on the same display . With time-correlated multi-domain display, engineers can now make accurate timing measurements to understand the changes in the frequency domain caused by delays and delays between time-domain command/control events in their designs. For example, observing the VCO/PLL startup process or measuring the transition characteristics of frequency-hopping RF signals is now simple. In addition, because the MDO4000 can provide complete system-level observations with time and frequency domain time correlation, it has become easier than ever to find intermittent EMI noise and EMI noise caused by component status, which is currently beyond the capabilities of other test equipment.

In another industry first, the MDO4000 allows engineers to view the RF spectrum of a signal at any point in a long acquisition to understand how the spectrum changes over time or component states. By fully applying the unique and patent-pending Spectrum Time technology to the time domain acquisition, engineers can view the RF spectrum at any point in their acquisition while simultaneously viewing their analog, digital and/or decoded buses at the same time. Similarly, RF time domain traces are used to display the amplitude, frequency or phase of the RF input signal over time.

Rohde & Schwarz signal and spectrum analyzer R&S FSW

R&S FSW is the most advanced signal and spectrum analyzer in the industry. It is another revolutionary product of R&S in the field of RF and microwave in the past 79 years. Based on many years of experience in the field of spectrum analysis, this product has made historic breakthroughs in displaying average noise level, dynamic range, phase noise, test accuracy and other RF performance indicators. It is extremely innovative in terms of operation convenience and application diversity, and is an ideal choice for engineers for spectrum measurement and signal analysis. It covers the frequency range of 2 Hz to 8 GHz, 13 GHz and 26.5 GHz; at 1 GHz carrier, 10 kHz frequency deviation, its typical phase noise value reaches -137 dBc (1 Hz). With noise correction, the dynamic range of WCDMA ACLR test can reach -88 dBc; the total test uncertainty within 8 GHz is only 0.4 dB; the spurious-free dynamic range is >100 dBc.

The demodulation bandwidth of R&S FSW reaches 160 MHz, which is very useful for testing frequency hopping, broadband satellite and pulse radar signals. The instrument is equipped with 400 M sampling I/Q storage space as standard, which can seamlessly record broadband signals for a long time. When equipped with R&S FSW-K6 option, it can also support automatic pulse signal analysis function, automatically test pulse parameters such as pulse width, period, rise time, etc., and can also automatically perform linear frequency modulation or Barker code signal amplitude, frequency, phase characteristics of each specific pulse.

R&S FSW provides MSRA (multi-standard radio analysis) for simultaneously demodulating and measuring signals of different standards at different frequencies. With a large 12.1-inch touch screen and a wide bandwidth of 160 MHz, it can test signals of multiple standards simultaneously during the development and production of multi-mode base stations and analyze their mutual impact.

In addition, the R&S FSW has many options to support phase noise, noise figure, analog AM/FM/φM demodulation, arbitrary vector signal analysis, and all standard measurement functions of mobile communications (GSM, WCDMA, CDMA2000, WIFI, LTE...), customized OFDM signal demodulation analysis functions, digital pre-distortion and other applications.