National Instruments NI 5791R, User Manual And Specifications

Page: 28 / 40

Figure 10. LO Output Power
0
1
2
3
4
5
6
7
8
9
10
1E+09 500 M 1.5E+09 2E+09 2.5E+09 3E+09 3.5E+09 4E+09 4.5E+09 5E+09 0
LO Frequency (Hz)
LO Output P
ow
er (dBm)
Note
For frequencies above 2.8 GHz, the gain is <0 dB. The NI 5791 can daisy
chain up to eight channels of adapter modules below 2.8 GHz without external
amplification. For frequencies above 2.8 GHz, NI recommends using external LO
distribution amplifiers if more than two adapter modules share LOs.
CLK IN Front Panel Connector
Frequency
.................................................................... Reference Clock 10 MHz
.................................................................... Sample Clock 130 MHz
Amplitude
.................................................................... Square 0.7 V
pk-pk
to 5.0 V
pk-pk
into 50 Ω, typical
.................................................................... Sine 1.4 V
pk-pk
to 5.0 V
pk-pk
(1 V
RMS
to 3.5 V
RMS
)
into 50 Ω, typical
............................................................................ Input impedance 50 Ω, nominal
............................................................................ Coupling AC
CLK OUT Front Panel Connector
............................................................................ Interface standard 3.3 V LVCMOS
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