HP 54710A - Page 267

Fast Fourier
Transforms
(FFT)
Frequency Specifications (HP 54710A/20A in Real Time Mode)
Plug-in Bandwidth
(-3 dB)
Maximum
Sample Rate
Record
Length
Maximum
Freq Span
Max Resolution
at Max Frequency
54711A >1.5 GHz
1
2 GSa/s 16-16,384
2
1 GHz 122 kHz
3
54712A >1.1 GHz 2 GSa/s 16-16,384
2
1 GHz 122 kHz
3
54713A >500 MHz 2 GSa/s 16-16,384
2
1 GHz 122 kHz
3
54714A >500 MHz 2 GSa/s 16-8,192
2
1 GHz 244 kHz
3
54721A >1.1 GHz 4 GSa/s 16-32,768 2 GHz 122 kHz
54722A >1.5 GHz
1
8 GSa/s 16-32,768 4 GHz 244 kHz
1. 2.0 GHz in the HP 54710D and 54720D mainframes
2. 16-32,768 in the HP 54710D and 54720D mainframes
3. 61 kHz in the HP 54710D and 54720D mainframes
Span
sample rate / 2
Resolution
sample rate / record length
Frequency Accuracy
±
[(0.5
×
resolution)
+
(0.00007
×
signal
frequency)]
Magnitude Specifications
Magnitude Accuracy (Flattop window)
0.26 dB (3%) Near dc,
−
3
dB at maximum bandwidth
Signal-to-noise Ratio
55 to 65 dB (typical).
Controls
Span
Sets the maximum frequency
Resolution
Sets the spacing between points in the frequency domain
Magnify Controls
For zooming in on a portion of the frequency
record up to an expansion factor of 200. The magnify controls are:
magnify on/off, magnify span, and center frequency.
Vertical Scaling
The vertical scale is adjustable in dBm, a
logarithmic scale. You can adjust sensitivity and offset.
Window
There are three windows for reducing leakage and
enhancing certain characteristics in the frequency domain.
Rectangular (window off)
Use for transients and signals where
there are an integral number of cycles in the time record.
Hanning
Use for frequency accuracy and general purpose use.
Specifications and Characteristics
Characteristics
16–6