Test & measurement A compact analyser platform
sequentially in quick succession, providing quasi-simultaneous measurements. Both instruments offer solid RF performance – the R&S FPL1000 as a pure spectrum analyser and the R&S ZNL as a network analyser with optional spectrum analyser functionality.
Not only visually related: The R&S ZNL vector network analyser and the R&S FPL1000 spectrum analyser are based on the same platform.
High-end is not always necessary. In many cases, customers are mainly interested in solid RF performance at an attractive price with versatile and mobile application options. Tanja Menzel and Klaus Theißen, Rohde & Schwarz, describe two new analysers that meet these requirements
instruments for key RF measurements. These include the characterisation of components such as antennas, attenuators, filters and amplifiers, as well as measurements on signal sources, including spectral measurements, demodulation of analogue and digital signals and precise power measurements. The two analysers are
T
he R&S ZNL vector network analyser and the R&S FPL1000 spectrum analyser are versatile
very compact. With a footprint of just 408mm × 235mm, they leave plenty of space on the workbench to accommodate the DUT and accessories. Despite their low height of 186mm, the analysers have an integrated 10.1" WXGA touchscreen for the detailed presentation of measurement results. Weighing just 6kg in the base configuration, they are perfectly suited for mobile deployment in the field. Mobile applications are supported by a specially designed carrying bag and two hot-swappable, rechargeable batteries. An optional 12V/24V DC power supply is available for charging and operating the analysers in vehicles. Both analysers come with an easy-to-
Two optional, rechargeable, hot- swappable batteries are accessible on the rear of the instrument (here R&S ZNL)
20
use, intuitive graphical user interface. For example, traces can be shifted to a desired position by touching and dragging, and the measurement range can be adjusted using multi-touch gestures. Diverse measurement modes can be activated under several tabs. The MultiView mode displays all active measurements on one screen. The different measurements are performed
ZNL vecToR NeTwoRK aNaLySeR The ZNL is a vector network analyser with a four-receiver test set. In its base configuration, the instrument measures S- parameters, wave quantities and ratios of wave quantities in the frequency range from 5kHz to 3GHz or 6GHz. With a dynamic range of > 120dB, an output power range from –40dBm to 0dBm and trace noise as low as < 0.0025dB (RMS), the ZNL is suitable for characterising passive components such as filters. Functions such as embedding/ deembedding and trace mathematics are provided as standard. The test setup can be calibrated manually or using an automatic calibration unit. Time domain analysis and distance-to-fault measurements (e.g. to detect cable faults) are available as options; these functions can be enabled via keycodes. As a special feature, the ZNL can be
equipped with a hardware board that adds a fully integrated spectrum analyser. As a result, the ZNL provides both network and spectrum analysis in a compact unit. As the spectrum analyser is implemented in hardware, it offers performance very close to that of a pure spectrum analyser. The ZNL spectrum analyser function largely corresponds to that of the FPL1000 in terms of operation, base functionality and performance. Minor limitations arise from the fact that the signal under test, on its way to the receiver, needs to be routed through switches and components to bypass the network analyser test set. When combined with an R&S NRP power sensor and the precise power measurements option, the R&S ZNL turns into a true three-in-one all-rounder, opening up a wide variety of applications in development, service and university training.
FPL1000 SPecTRuM aNaLySeR The R&S FPL1000 spectrum analyser operates in the frequency range from 5kHz to 3GHz. It has a typical phase noise of –10dBc (10kHz offset, 1GHz carrier), a typical TOI of +20dBm and a typical
September 2018 Instrumentation Monthly
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60 |
Page 61 |
Page 62 |
Page 63 |
Page 64 |
Page 65 |
Page 66 |
Page 67 |
Page 68 |
Page 69 |
Page 70 |
Page 71 |
Page 72 |
Page 73 |
Page 74 |
Page 75 |
Page 76 |
Page 77 |
Page 78 |
Page 79 |
Page 80
