12 | Keysight | M9381A PXIe Vector Signal Generator – Data Sheet
Technical Specifications and Characteristics
Spectral purity
Phase noise at 20 kHz offset
Normal loop bandwidth
−122 dBc/Hz, typical
−117 dBc/Hz, typical
−112 dBc/Hz, typical
−108 dBc/Hz, typical
1 GHz
2 GHz
3 GHz
6 GHz
Single Sideband Phase Noise in CW Mode
Normal Loop Bandwidth
-20
-30
-40
1GHz
-50
2GHz
2.4GHz
3GHz
-60
-70
5.8GHz
6GHz
-80
-90
-100
-110
-120
-130
-140
-150
-160
10 Hz
100 Hz
1 kHz
10 kHz
100 kHz
1 MHz
10 MHz
Frequency Offset From Carrier
Figure 11. Single sideband phase noise in normal loop bandwidth, CW mode from 10 Hz to 10 MHz,
offset at 1, 2, 2.4, 3, 5.8, and 6 GHz.
Single Sideband Phase Noise in CW Mode
Narrow Loop Bandwidth
-20
-30
-40
1GHz
-50
2GHz
-60
-70
2.4GHz
3GHz
5.8GHz
6GHz
-80
-90
-100
-110
-120
-130
-140
-150
-160
10 Hz
100 Hz
1 kHz
10 kHz
100 kHz
1 MHz
10 MHz
Frequency Offset From Carrier
Figure 12. Single sideband phase noise in narrow loop bandwidth, CW mode from 10 Hz to 10 MHz,
offset at 1, 2, 2.4, 3, 5.8, and 6 GHz.
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