11 | Keysight | Infiniium S-Series High-Definition Oscilloscopes - Data Sheet
Oscilloscope Overview – Frequency Domain (Continued)
Trying to interpret traditional oscilloscope time-domain specifications can be challenging in determining if a specific scope can
be recommended for RF/uW/mmW measurements. With correction filters, low-noise front end, and the 10-bit ADC, S-Series
oscilloscopes can be used for wideband RF applications. Typical RF characteristics for the S-Series are listed below with graphs
showing characterization results shown at the bottom of the page.
Typical RF characteristic values from measured results on an 8-GHz S-Series oscilloscope
Sensitivity/noise density
—160 dBm/Hz
– 1 mV/div; —38 dBm range
– Power spectral density measurement at 1.0001 GHz, 1.0001 GHz center frequency, 500 kHz span, and 3 kHz RBW
Noise figure
14 dB
– Derived from measurement above
Signal-to-noise ratio/dynamic range
108 dB
– 0 dBm 1 GHz input carrier, 0 dBm scope input range
– 1 GHz center frequency, 100 MHz span, 1 kHz RBW, measurement at +20 MHz from center
Absolute amplitude accuracy
± 1 dB
– 0 to 7.5 GHz
Deviation from linear phase
± 7 deg
– 0 to 7.5 GHz
Phase noise (at 1 GHz)
– 10 kHz offset
– 100 kHz offset
EVM
—121 dBc/Hz
—122 dBc/Hz
—47 dB (0.47%)
– 802.121 2.4 GHz carrier, 20 MHz wide, 64 QAM
Spurious responses (0 dBm signal, 0 dBm input range)
Spur Free Dynamic Range (SFDR)
– 1 GHz, 0 dBm signal present at input, FFT =5 GHz span, 3 GHz center, 100 kHz RBW
2nd harmonic distortion
72 dB
– 1 GHz input, 0 dBm, 5 GHz span, 3 GHz center, 100 KHz RBW
3rd harmonic distortion
—64 dBc
– 1 GHz input, 0 dBm, 5 GHz span, 3 GHz center, 100 KHz RBW
Two-tone Third-Order Intermodulation (TOI) distortion
– 0 dBm input tones, 2.435 GHz and 2.439 GHz, 2 MHz separation, 2.437 GHz center frequency, 10 MHz span, 100 kHz
RBW, 6 dBm input range
—46 dBc
+21.5 dB
Input match
– < 50 mV/div, 0-7 GHz
– >= 50 mV/div, 0-7 GHz
—15 dB; 1.4 VSWR
—19 dB; 1.25 VSWR
Using data acquired from S-Series, VSA shows an excellent TOI value of
21.5 dB.
Using data acquired from S-Series, VSA shows an EVM for IEEE 802.11
QAM 64 of 0.47%.
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