SWRA004A
a)Special Function 34.1 turns on the loss compensation factor.
b)Special Function 34.2 is used to enter the loss before the DUT.
c)Special Function 34.3 is used to enter the room temperature in Kelvin (300°K).
d)Special Function 34.4 is used to enter the loss after the DUT.
e)Special Function 34.0 is used to turn off the loss compensation factor.
The noise figure is measured as follows:
7)Connect the noise source directly to the EVM RF input port, J20.
a)A circulator between the noise source and RF input port may help minimize any mismatches between the EVM board and test equipment.
8)Connect the LO source to the EVM LO input port, J12.
a)Set the LO source at the nominal power and frequency (See Table 4).
b)Each LO frequency being tested is entered in the Noise figure meter by using Special function 3.1. If the source has excessive broad band noise, a filter at the LO port, J12, may be necessary to eliminate the broad band noise during testing.
9)Connect the EVM IF output port, J21, to the noise figure meter input port.
a)A bandpass or low pass filter may be necessary on the IF port to eliminate the LO signal interference and get an accurate noise measurement.
10)Measure the Noise Figure.
High-Band Cascaded: RF Input Return Loss
Control state: 111001
The cascaded input return loss of the high band is measured at the high band RF input port, J20. The measurement is performed using a network analyzer.
Set up the network analyzer as follows to measure the RF input return loss:
44 | TRF1500 Integrated |
