16 | Keysight | M9421A VXT PXIe Vector Transceiver - Data Sheet
Analog modulation source key specifications1
Frequency Modulation2
FM Deviation
FM Deviation Accuracy
FM Rate
FM Rate Accuracy
Residual Distortion5
Amplitude Modulation3
AM Depth
200 Hz to 100 kHz
± 1% (nominal)
20 Hz to 40 kHz
Same as RF reference source, nominal
1% (nominal)
1% to 99%
AM Depth Accuracy
AM Rate
± 1% (nominal)
50 Hz to 40 kHz
AM Rate Accuracy
Residual Distortion5
Phase Modulation4
PM Deviation
Same as RF reference source, nominal
0.25% (nominal)
0.2 to 20 rad
PM Deviation Accuracy
PM Rate
± 1% (nominal)
20 Hz to 40 kHz
PM Rate Accuracy
Residual Distortion5
Same as RF reference source, nominal
0.5% (nominal)
1. For specified frequency ranges between 60 and 3000 MHz.
2. FM Rate: 400 Hz, 1 kHz, 10 kHz; FM Modulation Index: 1 to 2000
3. AM Rate: 400 Hz, 1 kHz, 10 kHz; AM Depth: 5% to 95%
4. PM Rate: 400 Hz, 1 kHz, 10 kHz; PM Deviation: 1 to 20 rad
5. SINAD [dB] can be derived by 20 x log10 (1/Distortion).
N9069A noise figure measurement application key specifications
The specifications apply in the frequency range documented in the table 1. For the other frequency bands, external pre-selection filter
is recommended.
Noise figure (60 MHz to 6 GHz)
Noise Source ENR
4 to 6.5 dB
12 to 17 dB
20 to 22 dB
Gain
Measurement Range
0 to 20 dB
Instrument Uncertainty
± 0.044 dB
0 to 30 dB
± 0.095 dB
0 to 35 dB
± 0.102 dB
Instrument uncertainty (DUT gain range = –20 to +40 dB)
60 MHz to 6 GHz ± 0.13 dB
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