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Why does my FieldFox spectrum analyzer preamplifier increase the noise floor when engaged?
The FieldFox spectrum analyzer preamplifier selection will normally reduce the displayed noise floor when activated. However, if the FieldFox RF attenuation AUTO selection is set to ON then the preamp may not reduce the noise floor.

FAQ 2014-03-03

Can I measure temperature with the U1251A/U1252A Handheld Digital Multimeter?
Yes, you can measure temperature with the U1251A and U1252A Handheld Digital Multimeter…

FAQ 2013-11-17

How can I make field strength measurements on my handheld spectrum analyzer?
Each of the HSA products supports field strength measurements.

FAQ 2012-03-02

What is the frequency coverage of the handheld spectrum analyzers?
The frequency of the HSA varies by model.

FAQ 2012-03-01

What is the size of the internal user memory on the handheld spectrum analyzer? How many trace files or pictures can be saved?
The internal user memory of the HSA holds up to 60 MB.

FAQ 2012-02-20

How many peaks can be displayed in the handheld spectrum analyzer’s peak table?
On the N9342C, N9343C and N9344C, there may be 10 peaks.

FAQ 2011-11-07

Can I set a measurement interval on the U1251B, U1252B and U1253B Handheld Digital Multimeters?
Yes, you can set a measurement interval on the U1251B, U1252B and U1253B Handheld Digital Multimeters….

FAQ 2010-02-21