32
|
ni.com
|
NI PXIe-5693 Calibration Procedure
16. Commit the NI 5693 settings to hardware.
17. If the
IMD Side
from Table 10 is lower, complete the following steps:
a.
Tune the RF source 1 frequency to the tone 1 frequency lower value using the
following equation:
Tone 1 Frequency Lower
=
IMD Frequency
+ 1.2 MHz +
Tone Spacing
b.
Tune the RF source 2 frequency to the tone 2 frequency lower value using the
following equation:
Tone 2 Frequency Lower
=
IMD Frequency
+ 1.2 MHz + (
Tone Spacing
× 2)
18. If the
IMD Side
from Table 10 is upper, complete the following steps:
a.
Tune the RF source 1 frequency to the tone 1 frequency upper value using the
following equation:
Tone 1 Frequency Upper = IMD Fre
1.2 MHz - (
Tone Spacing
× 2)
b.
Tune the RF source 2 frequency to the tone 2 frequency upper
value using
the following equation:
Tone 2 Frequency Upper = IMD Fre
1.2 MHz -
Tone Spacing
19. Turn off the RF source 2 output power.
20. Set the RF source 1 power level to have a -5 dBm target tone power at the DUT input
connector using the following equation:
RF Source 1 Power Level = Target Tone Power +
RF Source 1 through Splitter and Combiner Path Loss
2,520
300
Upper
2,980
300
Lower
3,020
300
Upper
3,780
300
Lower
3,820
300
Upper
4,580
300
Lower
4,620
300
Upper
5,780
300
Lower
5,820
300
Upper
Table 10.
Out-of-Band TOI Verification Test Frequencies (Continued)
IMD Frequency (MHz)
Tone Spacing (MHz)
IMD Side
