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| Model 370 Features |
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- Resistance measurement ranges from 2 mW to
2 MW
- 21 excitation levels from 3.16 pA to 31.6 mA
- Displays real-time sensor excitation power
- One sensor input (up to 8 or 16 with scanner)
- PID temperature control
- IEEE-488 and RS-232C interfaces, alarms, relays, and analog outputs
- Unique noise-reduction elements:
- Patented* current source preserves common mode noise rejection
- Optically isolated measurement electronics eliminates the potential for ground loops
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| Two 16-channel scanners: |
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- Model 3716 scanner is optimized for low DC bias current
- Model 3716L scanner is optimized for low noise
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| 8-channel preamp/scanner: |
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The new Lake Shore Cryotronics Model 3708 8-channel preamp/scanner offers an exceptionally low voltage noise floor specification of just 2 nVRMS/vHz, improving the utility of their Model 370 AC resistance bridge for ultra-low AC resistance measurements.
 Model 3708 Application Note
Buy Model 3708
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| *U.S. Patent #6, 501, 255, Dec., 2002, "Differential current source with active common mode reduction," Lake Shore Cryotronics, Inc. |
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| Introduction |
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| The Model 370 AC resistance bridge is designed for precise, accurate, low noise, low excitation power AC resistance measurements. Its primary application is the measurement of resistive materials in cryogenic environments from 20 mK to 1 K. Fully integrated, the Model 370 includes features to reduce and control noise at every step of the resistance measurement process. A unique, patented, matched impedance current source and active common mode reduction circuitry minimize noise and self-heating errors. With up to 16 channels, IEEE-488 and serial interfaces, and closed loop temperature control, the Model 370 offers seamless integration with existing cryogenic systems and is the most complete package on the market today. Used with Lake Shore calibrated subkelvin resistance temperature sensors, it not only measures and displays, but also controls temperature for dilution refrigerators and other cryogenic systems. More... |
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| Resistance Measurement |
| Performance Enhancement |
| Excitation Modes |
| Autorange and Manual Range |
| Cryogenic Temperature Conversion |
| Cryogenic Temperature Control |
| Computer Interfaces |
| Analog Outputs |
| Configurable Display |
| Scanners for Model 370 |
| Cryogenic Temperature Sensor Performance |
| 370/3716 Performance Specification Table |
| 3716L Performance Specification Table |
| 3708 Performance Specification Table |
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