The Anritsu 36581NNF is an electronic AutoCal module that delivers automatic, repeatable VNA calibration across 40 MHz to 6 GHz. It eliminates systematic measurement errors through fast, high-quality coaxial calibrations using solid-state switching and N-type connectors. The module performs 1-port and full 2-port 12-term OSLT calibrations, isolation measurements, and true thru mode operation. Control is managed via PC with appropriate software, requiring either a 37000 series VNA with firmware 3.23+ or compatible MS462XX VNMS. Each module ships with NIST-traceable characterization data and maintains specification performance for six months without re-characterization.
## Technical Specifications
• **Frequency Range:** 40 MHz to 6 GHz
• **Connector Type:** N (Male)–N (Female)
• **Switch Architecture:** Electronic (solid-state)
• **Source Match:** Up to 36 dB
• **Reflection Tracking:** Up to ±0.15 dB
• **Transmission Tracking (Module Thru Mode):** Up to ±0.15 dB
• **Transmission Tracking (True Thru Mode):** Up to ±0.10 dB
• **Dimensions:** 155 mm (W) × 65 mm (H) × 90 mm (D)
## Key Features
• Automatic calibration with electronic switching eliminates manual tuning
• Dual-mode thru capability: module thru or true thru for direct connector calibration
• Isolation measurement capability with manual, default, and custom averaging options
• Characterization data file supplied for each standard; NIST traceability confirmed
• Six-month specification validity without re-characterization
• RS-232 serial interface for host PC or VNA control
• GPIB (IEEE 488.2) control interface for compatible instruments
## Typical Applications
• Production VNA calibration requiring high repeatability
• Laboratory measurement systems demanding rapid, error-corrected S-parameters
• Automated test environments integrating multiple VNA instruments
## Compatibility & Integration
Operates with Anritsu 37000 series VNAs (firmware 3.23+), MS462XX VNMS, 360B, and MS 4623 B platforms. Requires Windows PC with serial interface or GPIB capability; controlled via dedicated software linked to compatible VNA firmware.
