Vector Signal Generator
Specifications
2
0
Frequency
Frequency Range
85 MHz to 6.6 GHz
85 MHz to 3.3 GHz
85 MHz to 1.3 GHz
NI PXIe-5673 Part Number
780418-0X
–2
–4
–6
–8
–10
780417-0X
780416-0X
Note: NI PXIe-5673 part numbers vary according to memory size.
Bandwidth
Modulation bandwidth
–200 –150 –100
–50
0
MHz
50
100
150
200
(3 dB double sideband).......................... >100 MHz
The modulation bandwidth specification assumes the frequency range is between
85 MHz and 6.6 GHz. For example, 100 MHz bandwidth can be achieved at a
frequency of 135 MHz but not 85 MHz.
Figure 3. Typical Modulation Bandwidth at 5.8 GHz Carrier Frequency
Data streaming continuous
transfer rate...................................... 500 MB/s, nominal
2
0
Tuning Resolution (NI 5650/5651/5652)
<1.3 GHz................................................ <1 Hz
≤1.3 to ≤3.3 GHz.................................... <2 Hz
≤3.3 to ≤6.6 GHz.................................... <4 Hz
–2
–4
–6
–8
–10
Frequency Settling Time
0.1 x 10-6 of final frequency................... <7.5 ms, maximum
0.1 x 10-6 of final frequency................... <3.5 ms, typical
The frequency settling time specification includes only frequency settling and
excludes any residual amplitude settling that may occur as a result of large
frequency changes.
–200
–150
–100
–50
0
50
100
150
200
MHz
Figure 1. Typical Modulation Bandwidth at 1 GHz Carrier Frequency
In figures 1 through 5, typical modulation bandwidths show the actual baseband
response. The usable bandwidth is limited by the NI 5450 I/Q generator sample
rate from -80 to 80 MHz. The shaded area between the solid lines indicates the
frequency range covered by this specification.
Internal Frequency Reference (NI 5650/5651/5652)
Frequency.............................................. 10 MHz
Initial accuracy...................................... 3 x 10-6
Temperature stability (15 to 35 ˚C) ....... 1 x 10-6, maximum
Aging
2
0
Per year............................................. 5 x 10-6, maximum
–2
–4
–6
–8
–10
External Reference Input (NI 5450)
Frequency.............................................. 10 MHz
Amplitude.............................................. 1.0 Vpk-pk to 5.0 Vpk-pk into 50 Ω
Input impedance.................................... 50 Ω
Coupling ................................................ AC
–200 –150 –100
–50
0
MHz
50
100
150
200
External Reference Output (NI 5450)
Frequency.............................................. 10 MHz
Reference clock out............................... 0.7 Vpk-pk into 50 ½, nominal
Output impedance................................. 50 ½
Figure 2. Typical Modulation Bandwidth at 2.4 GHz Carrier Frequency
Coupling ................................................ AC
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5
NI [ National Instruments ]
