A new vector network analyzer from test and measurement supplier Rohde & Schwarz (R&S) may be just the device field engineers are looking for. Portable and handheld, the company is positioning it as a “compact powerhouse.”
The R&S ZNH can be used to help detect and remedy defective radio frequency (RF) cables and communications system components. It can also characterize components up to 26.5 GHz in the field and lab. Its standard features include essential functions such as cable and antenna measurements and full two-port S-parameter measurements. Additional options also include power meter, pulse measurement, wave ratio and wave quantities that can be enabled with a software keycode.
The device offers a small form factor, weighing in at 3 kg (6.6 lb), with a compact fanless housing and long battery life. According to R&S, the device is simple to operate and configure. Its 7 in capacitive touchscreen uses smart touch gestures similar to smartphones; it can also be operated using a rotary knob and widely spaced keys designed for comfortable operation with gloves. Remote operation is possible via PC, Android or iOS app. A wizard can be used to simplify measurements with pre-configured, automated test sequences, speeding up the test process and reducing the potential for on-site errors.
Dedicated reference receivers and test receivers at both ports make up the four-receiver architecture of the R&S ZNH, which allows support for advanced calibration types such as unknown through, open, short and match (UOSM) calibration. A built-in receiver step attenuator at both ports, adjustable in 5 dB steps from 0 dB to 15 dB, protects the device from overloading.
Additional features include:
- Frequency range of 30 kHZ to 4/8/18/26.5 GHz, to support a wide range of applications
- Dynamic range up to 100 dB (typical), to measure large level variations
- Low trace noise magnitude (RMS) of 0.0015 dB to 0.0040 dB (typical)
- Low trace noise phase (RMS) of 0.02° to 0.04° (typical)
Beyond deployment in the field, R&S points out, the device is also a fit for environments where space is limited: research and development labs, production lines and universities. It can also be used in production environments to measure RF components such as filters, amplifiers, cables, connectors and antennas.