HP 346B Noise Source, 10 MHz to 18 GHz

The ideal companion to HP's noise figure meter and systems is the HP 346B 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 346B's high ENR, low SWR, and variety of connectors make it a general-purpose noise source. Option H01 can be added for high ENR (21 dB typical) which is suitable for measureing high noise figure devices. Option H42 Direct Broadcast Satellite (DBS) Noise Source was developed especially to test low noise block converters (LBN) used for DBS.

[ Features ]

Low SWR for reducing noise figure (NF) measurment uncertainty
Individually calibrated ENR values at specific frequencies to enhance accuracy
Calibration printed on its label for easy loading into the HP 8970B

[ Specifications ]

Frequency Range:              10 MHz to 18 GHz
Excess Noise Ratio (ENR) Limits
                              14 to 16 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)


HP 346B Option H01 High ENR Noise Source Specifications

The HP 346B Option H01 has high ENR (21 dB typical), suitable 
for measuring high noise figure devices.

Contact HP for technical specifications.

HP 346B Option H42 DBS Noise Source Specifications

The 346B Option H42 was developed especially to test low noise 
block converters (LBN) used for Direct Broadcast Satellite (DBS).  
WR75 waveguide output, 5 dB ENR, low ENR calibration uncertainty, 
and low SWR inprove the noise figure measurement accuracy of DBS LNBs. 
 
Contact HP for technical specifications.

[ Ordering ]

HP 346B Noise Source, 10 MHz to 18 GHz Opt 001 Type-N (male) Connector Opt 002 APC-7 Connector Opt 004 Type-N (female) Connector Opt H01 High ENR Opt H42 DBS Noise Source Opt 910 Extra Operating Manual Opt W30 Extended Repair Service Opt W32 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