Rohde & Schwarz ZNH8

Rohde & Schwarz ZNH8 is a portable vector network analyzer with a frequency range from 30 kHz to 4 GHz. This device is a powerful tool for engineers due to its compact design, high performance, and ease of use.

Main Features:

• Frequency range: 30 kHz to 4 GHz.
• Single-port measurements for cables and antennas in the basic version.
• Two-port S-parameter measurements (S₁₁, S₁₂, S₂₁, S₂₂).
• Dynamic range: up to 100 dB (typical), for precise measurements of filter and antenna isolation.
  
  

Main Capabilities:

R&S ZNH offers complete functionality for servicing radio systems:

• Distance to fault (DTF) measurements.
• Single-port cable loss measurements.
• Reflection and transmission measurements.
• Four S-parameters: S₁₁, S₂₁, S₁₂, S₂₂.
  
  

Additional Features:

• Power sensor support (ZNH-K9).
• Pulse measurements (ZNH-K29).
• DC bias voltage source (ZNH-K10).
• Vector voltmeter (ZNH-K45).
• Wave ratios and wave magnitudes (ZNH-K66).
  
  

Four-Receiver Architecture:

The four-receiver architecture includes reference and test receivers on both ports. This enables:

• Advanced calibration types, such as UOSM (unknown through, open, short, matched).
• Accurate measurements for devices with different connector types on input and output ports.
  
  

Ease of Use:

• The touchscreen supports gestures, like pinch-to-zoom, similar to smartphones.
• Remote control apps are available for PC, Android, and iOS.
• The measurement wizard simplifies setup and reduces the risk of user errors.
  
  

Single-Port Cable and Antenna Measurements:

• 16001 points per trace: allows for measurements of long cables without limitations.
• Cable loss verification: only one cable end needs to be connected. The other end can be:
  • Short-circuited.
  • Left open.
• Antenna evaluation: reflection measurements help assess energy transmission efficiency.
• Data formats:
  • Return loss.
  • Voltage Standing Wave Ratio (VSWR).
  • Reflection coefficient.
    
    

Four S-Parameter Measurements:

S-parameters describe how a device changes a signal during transmission or reflection:

• Supported measurements: S₁₁, S₂₁, S₁₂, S₂₂.
• Display modes: single, split, triple, quad.
• Data formats: graphs, tables, and more.

These measurements are useful for both product development and system maintenance.

R&S ZNH4 is a reliable and versatile tool for engineers working with RF and microwave systems.