HP 346A Noise Source, 10 MHz to 18 GHz, 6 dB ENR

The ideal companion to HP's noise figure meter and systems is the HP 346A noise source. Since it is broadband (10 MHz to 18 GHz), it eliminates the necessity for several sources at different frequency bands. It has an individually calibrated ENR value at specific frequencies. The calibration is printed on its label for easy loading into the HP 8970B. The low SWR of the noise source reduces a major source of measurement uncertainty, reflections of test signals. The HP 346A noise source is designed especially for accurate characterization of input-impedance-sensitive devices (like GaAsFETs and many UHF amplifiers). Its very small change in reflection coefficient (<0.01) from ON to OFF minimizes errors when measuring noise figure and gain as a function of input impedance.

[ Features ]

Low SWR for reducing noise figure measurement uncertainty
Individually calibrated ENR values at specific frequencies
Calibration printed on its label for easy loading into HP 8970B

[ Specifications ]

Frequency Range:              10 MHz to 18 GHz
Excess Noise Ratio (ENR) Limits:
                              5 to 7 dB
Maximum SWR (reflection coefficient) On and Off:	
     10 to 30 MHz:            1.3 (0.13)
     30 to 5000 MHz:          1.15 (0.07)
     5 to 18 GHz:             1.25 (0.11)
Power Required:               28 ±1 Vdc
Size:                         21 mm W x 140 mm H x 30 mm D
                              (0.8 in x 5.5 in x 1.2 in)
Standard Connector:           APC to 3.5 (male)

[ Ordering ]

HP 346A Noise Source, 10 MHz to 18 GHz, 6 dB ENR Opt 001 Type N (male) connector Opt 002 APC-7 connector Opt 004 Type-N (female) connector Opt 910 Extra operating manual(s) Opt W30 3 Year Return Repair Service Opt W32 3 Year Calibration Customer Return Service Opt W34 3 Year Standards Compliant Calibration Service Opt W50 5 Year Return Repair Service Opt W52 5 Year Customer Return Calibration Service Opt W54 5 Year Standards Compliant Calibration Service

[ Key Literature ]

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[ Assistance ]

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[ Related ]

Related HP 346 Broadband Noise Source Family product datasheets:

HP 346A Noise Source, 10 MHz to 18 GHz, 6 dB ENR

HP 346B Noise Source, 10 MHz to 18 GHz

HP 346C Noise Source, 10 MHz to 26.5 GHz

Related product families available online:

HP346 Noise Source Family