W-2220MR Crystal Temperature Test System

  • Industry’s first crystal temperature test system with 100% electronic switching
  • Proprietary 50 ohm reflection network provides typical frequency measurement repeatability < 0.02 ppm !
  • High speed, high precision frequency measurement using calculated FL over temperature
  • Chamber holds eight 64-position pallet socket DUT PCBs for a total of 512 parts
  • Crystals of different frequencies can be tested in a single temperature run
  • Parameter and curve fit characteristics are checked against easy to define QC limits
  • All data is published in a Microsoft Access™ database
  • Printouts are generated using Crystal Reports®
  • Data can be exported to Microsoft Excel™ for custom data analysis


250B-1 Frequency Range: 1 MHz to 220 MHz
250C Frequency Range: 1 MHz to 500 MHz
Frequency Correlation: ± 1 ppm at series, typical *
Frequency Repeatability: < 0.02 ppm (typical)
Temperature Stability: ± 0.1° C
Temperature Range: -55° C to 125° C (MR)
-65° C to 125° C (MR with LN2 Boost )
* Proprietary measurement and calibration algorithms provide correlation to industry standard crystal measurement equipment.


  • S&A 250B-1 or 250C Network Analyzer
  • S&A 4350MR Option 1 Temperature Test Chamber
  • Eight position card cage and backplane PCB
  • 50 Ohm Reflection Networks
  • Windows® based System Software
  • Computer
  • Printer (Optional)