Home < NCSA Products < Cryogenic Noise Terminations - General Information < Cryogenic Noise Termination - 7mm Coaxial, MT7118J
Cryogenic Noise Termination - 7mm Coaxial
MT7118J
Description
The MT7118J cryogenic termination is a liquid nitrogen cooled noise source that provides accurately known noise temperatures at specified calibration frequencies and low VSWR over the full frequency range. It is used for performing accurate noise temperature measurements in 7mm (APC7) applications such as certification of the noise performance of low noise earth stations. It is also used for general purpose, low noise figure/temperature measurements and calibration of solid state noise generators.
The MT7118J comes with a universal input power supply that operates on line voltages of 100 - 240 VAC and 47 - 63 Hz, while supplying 48 VDC to the device power input.
The MT7118J can be packaged with an extensive complement of options and accessories, including calibrated adapters to other coaxial connector series and waveguide, and user specified calibration frequencies. Our sales staff will be happy to assist in tailoring the best package for your application.
Specifications
Frequency Range
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DC to 18.0 GHz
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| Maximum VSWR: |
 |
 DC to 4.0 GHz |
1.06
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|
4.0 to 12.0 GHz |
1.10
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| 12.0 to 18.0 GHz |
1.15
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| Operating Temperature (Load)
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77.36°K (liquid nitrogen cooled)
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|
Noise Temperature Uncertainty: |
±0.7K at 3.95 GHz (calibration frequency)1
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|
±1.0K at 7.5 GHz (calibration frequency)1
|
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±1.2K at 12.4 GHz (calibration frequency)1
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±1.5K at 18.0 GHz (calibration frequency)1
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| Connector
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7mm
|
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Operating Orientation
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Horizontal
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Operating Life
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2 hours minimum (one fill)
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Dewar Capacity
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1 liter
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Weight
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7 lbs. approximately (empty)
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Pressurization
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2 psi helium gas (external supply)
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|
AC Power
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100-240 VAC, 47-63 Hz, 6.0 amps max
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Accessories Provided
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1 two-meter power cord; 1 wooden case
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|
1 |
For calibration at additional or other frequencies, please consult the factory. |
Pressurizing System (Optional)
Maury cryogenic terminations require helium gas pressurization at 2 psi. The optional MT152A pressurizing system provides the valves, gages, and hardware necessary to connect an external helium gas supply to Maury cryogenic terminations (helium gas supply is not provided).
MT7118J Cryogenic Noise Termination with universal input power supply.
Product Data Sheets (click the links below to download PDF*
copies):
4A-008A (19 KB) Technical Data - Model MT7118J - 7mm Coaxial Cryogenic Termination 4F-001 (55 KB) Technical Data - Model MT152A - Helium Gas Pressurizing System 5C-028 (2.3 MB) Application Note - Applications of the Maury Noise Calibration Systems; Accuracy & Convenience in Noise Measurement
*PDF (Portable Document Format) files can be viewed with Adobe® Acrobat Reader™.
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Request printed versions of Maury Product Data Sheets