The Anritsu 37325A is a microprocessor-controlled Vector Network Analyzer delivering high-accuracy S-parameter measurements across 40 MHz to 13.5 GHz. This benchtop instrument integrates a fast-sweeping synthesized source, auto-reversing test set with solid-state transfer switch, and tuned four-channel receiver into a compact package. Four independent measurement channels support S11, S21, S22, S12, and user-defined combinations of incident and reflected wave components. The system achieves 128 dB receiver dynamic range at 2 GHz and 13.5 GHz, with system dynamic range reaching 98 dB across the full span. Noise floor performance spans -65 dBm at 40 MHz to -93 dBm at 2 GHz and 13.5 GHz. Measurement throughput via GPIB enables rapid data transfers, with typical 500 ms acquisition time for 101 data points across the full frequency range.
Technical Specifications
• Frequency Range: 40 MHz to 13.5 GHz
• Measurement Parameters: S11, S21, S22, S12, or user-defined combinations of a1, a2, b1, b2
• Channels: Four independent measurement channels
• Data Points: Maximum 1601; selectable 1601, 801, 401, 201, 101, or 51 points without recalibration; arbitrary N points (2 ≤ N ≤ 1601); CW single-frequency mode
• Port 1 Output Power: +5 dBm
• Maximum Port 2 Input: +30 dBm
• Receiver Dynamic Range: 100 dB @ 40 MHz; 128 dB @ 2 GHz and 13.5 GHz
• System Dynamic Range: 70 dB @ 40 MHz; 98 dB @ 13.5 GHz
• Noise Floor: -65 dBm @ 40 MHz; -93 dBm @ 2 GHz and 13.5 GHz
• High Level Noise: <0.04 dB and <0.5° peak-to-peak (1 kHz IF bandwidth to 13.5 GHz)
• Calibration: LRL/LRM and adapter removal calibrations
– Key Features
• 8.5-inch color LCD with four independent displays, trace overlay, and trace memory
• External VGA monitor support
• Fast-sweeping synthesized source and solid-state transfer switch
• 500 ms typical measurement time for full-span 101-point sweep
• Internal hard and floppy disk drives
• GPIB interface for automated control and data transfer
– Options
• Slide rack mounting (Opt 1)
• Rack mounting (Opt 1A)
• High-speed time/distance domain measurement (Opt 2)
• External SCSI-2 hard disk compatibility (Opt 4)
