Measuring Two Port Insertion Loss for Spectrum Analyzer, Channel Scanner, 1xEV-DO Analyzer, CDMA Analyzer, and Signal Generator (RF In Loss and RF Out Loss)

Measuring Two Port Insertion Loss for Spectrum Analyzer, Channel Scanner, 1xEV-DO Analyzer, CDMA Analyzer, and Signal Generator (RF In Loss and RF Out Loss)
When you perform spectrum analysis, TX analysis (CDMA, W-CDMA, 1xEVDO, and so forth), or measure signal generator outputs, you can measure accurately, and store, the device loss values. These RF In and RF Out Loss values can be used later in the measurements. This gives greater accuracy in your measurement results as you can use these stored RF In and RF Out values instead of entering approximate values.

Step
Notes

1
Connect the cable or device.
Connect the 3 meter (10 ft) cable, high power attenuator, and other 60 cm (2 ft) cable (not used for normalization) between the two 10 dB pads that were used for normalization.

2
[Level]
If the insertion loss trace is not visible, you can change the reference level or use Autoscale to have the test set select a reference level for you.

Press [Autoscale] to display the trace so that it fills the screen from top to bottom.
Press [Ref Level] and then enter the appropriate value and press [dB] to manually select a level for the trace.
Press [Scale/Div] and then enter the appropriate value and press [dB] to manually select the number of dBs per line on the graticule.

3
[Store As]

4
[Store As RF IN Loss]
Saves the RF In Loss value for use in later measurements.

5
[Store As RF OUT Loss]
Saves the RF Out Loss value for use in later measurements.


	Step	Notes
1	Connect the cable or device.	Connect the 3 meter (10 ft) cable, high power attenuator, and other 60 cm (2 ft) cable (not used for normalization) between the two 10 dB pads that were used for normalization.
2	[Level]	If the insertion loss trace is not visible, you can change the reference level or use Autoscale to have the test set select a reference level for you. Press [Autoscale] to display the trace so that it fills the screen from top to bottom. Press [Ref Level] and then enter the appropriate value and press [dB] to manually select a level for the trace. Press [Scale/Div] and then enter the appropriate value and press [dB] to manually select the number of dBs per line on the graticule.
3	[Store As]
4	[Store As RF IN Loss]	Saves the RF In Loss value for use in later measurements.
5	[Store As RF OUT Loss]	Saves the RF Out Loss value for use in later measurements.