Vector Signal Generator
Spectral Purity
Sideband Image Suppression
Frequency
100 MHz
500 MHz
1 GHz
Phase Noise (dBc/Hz)
2 MHz Modulation
Bandwidth
20 MHz Modulation
Bandwidth
Frequency
<-125
<-112
<-105
<-98
≥85 MHz to ≤400 MHz
>400 MHz to ≤2.5 GHz
>2.5 GHz to ≤5.5 GHz
>5.5 GHz to ≤6.6 GHz
≤-43 dBc
≤-50 dBc
≤-46 dBc
≤-43 dBc
≤-41 dBc
≤-48 dBc
≤-45 dBc
≤-41 dBc
2 GHz
3 GHz
<-95
Note: Measured with a test signal at a baseband frequency of 1 MHz.
4 GHz
<-93
5 GHz
<-90
–
–42
6.6 GHz
<-90
–44–
–
–
–
–
–46
–48
–50
–52
Table 1. Single Sideband Phase Noise at 10 kHz Offset
–
–50
–54–
–
–56
–60 –
–70 –
–80 –
–90 –
–58–
–
–
–60
–62
–64–
–
–
–
–
–66
–68
–70
–72
–
–
–
–
–
–100
–110
–120
–130
–140
–74–
–
–
–
–76
–78
–80
1 GHz LO
2.4 GHz LO
5.8 GHz LO
–82–
–80M –70M –60M –50M –40M –30M –20M –10M
Baseband Frequency (Hz)
0
10M 20M 30M 40M 50M 60M 70M 80M
–150 –
10
100
1k
10k
100k
1 M
10 M
Frequency Offset from Carrier (Hz)
2.4 GHz
1 GHz
5.8 GHz
Figure 6. Typical Image Rejection versus Baseband Frequency
Figure 4. Typical Phase Noise at 1, 2.4, and 5.8 GHz
Carrier Suppression
LO Frequency
85 MHz to 5.5 GHz
5.5 GHz to 6.6 GHz
Carrier Suppression
–
–50
-44 dBc, maximum
-41 dBc, maximum
–60 –
–70 –
–80 –
–90 –
–100 –
–
–
–
0
–5
–
–
–
–
–110
–120
–130
–140
–150
–10
–15–
–20–
–
–
–
–
–25
–30
–35
–40
–
10
100
1k
10k
100k
1 M
10 M
Frequency Offset from Carrier (Hz)
5.8 GHz using internal
10MHz reference clock
5.8 GHz using 10MHz
backplane reference clock
5.8 GHz using external 10MHz reference
clock across NI 5663 front panel
–45–
–
–
–
–
–
–50
–55
–60
–65
–70
Figure 5. Typical Phase Noise at 5.8 GHz
85M
1G
2G
3G
4G
5G
6G
6.6G
Carrier Frequency (Hz)
Figure 7. Typical Carrier Suppression
BUY ONLINE at ni.com or CALL 800 813 3693 (U.S.)
6
NI [ National Instruments ]
