Specifications

Agilent 35670A

Input Noise

 

Input Noise

Input noise level

Flat top window, −51 dBVrms range, source impedance = 50 , 32 rms averages

Above 1280 Hz

160 Hz to 1.28 kHz (6.4 kHz span)

<–140 dBVrms/ Hz

<–130 dBVrms/ Hz< % 0 >

Note: To calculate noise as dB below full scale:

Noise [dBfs] = Noise [dBVrms/Hz] + 10LOG(NEBW) – Range [dBVrms]. See ‘’Window Parameters,’’ below, for noise equivalent bandwidths (NEBW).

Window Parameters

 

Uniform

Hann

Flat Top

 

 

 

 

3 dB bandwidth †

0.125% of span

0.185% of span

0.450% of span

Noise equivalent bandwidth †

0.125% of span

0.1875% of span

0.4775% of span

Attenuation at ± 1/2 bin

4.0 dB

1.5 dB

0.01 dB

Shape factor (60 dB BW/3 dB BW) 716

9.1

2.6

For 800 line displays. With 400, 200, or 100 line displays, multiply bandwidths by 2, 4, and 8, respectively. With 1600 line displays (only available in 1 or 2 channel mode), divide bandwidths by 2.

Single Channel Phase

Phase accuracy relative to external trigger

±4.0 degree

16 RMS averages, center of bin, dc coupled,

0 dBfs to −50 dBfs, 0 Hz < freq 10.24 kHz only

For Hann and flat top windows, phase is referenced to a cosine wave at the center of the time record. For the uniform, force, and exponential windows, phase is referenced to a cosine wave at the beginning of the time record.

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Agilent Technologies 35670-90066 manual Input Noise, Window Parameters, Single Channel Phase