Setting the 1xEV-DO Transmitter Reference Level

Setting the 1xEV-DO Transmitter Reference Level
You can set the 1xEV-DO transmitter reference level to display either relative power (dB) or absolute power (dBm). The test set defaults to relative. The top graticule (horizontal line) represents the total power in the 1xEV-DO channel. The scale per division is set to 5 dB per division by default, but you can change it if you wish.
If the reference level is set to relative, the reference level represents the total power in the 1xEV-DO channel, and is displayed as 0.0 dB. If the reference level is set to absolute, the reference level displays the actual power (in dBm) for the particular time domain section relevant to the selected CDP type. For example, in pilot CDP mode, the absolute power level is measured only over the pilot burst region of the signal.
To Set the 1xEV-DO Transmitter Reference Level:

Step
Notes

1
[Level]

2
On [Reference] select Abs or Rel.
Each time you press this softkey, the selected option changes.

3
[RF IN Loss]

4
Enter the RF In Loss using the numeric keypad.
If you are using a cable and attenuator connected to the access network power amplifier, enter the combined cable and attenuator loss here. The RF In Loss can be obtained by measuring the Insertion Loss. See "Two Port Insertion Loss"
Note: If data had been previously entered in [RF IN Loss], that data will be lost and replaced by the value you enter here.

5
[dB]

NOTE: The insertion loss of the test cable and high power attenuator must be accounted for to obtain accurate 1xEV-DO power measurements such as Pilot+MAC power. The insertion loss of the test cable/attenuator combination is accounted for as the RF In Loss, which is an offset applied by the test set to the power measurements.


	Step	Notes
1	[Level]
2	On [Reference] select Abs or Rel.	Each time you press this softkey, the selected option changes.
3	[RF IN Loss]
4	Enter the RF In Loss using the numeric keypad.	If you are using a cable and attenuator connected to the access network power amplifier, enter the combined cable and attenuator loss here. The RF In Loss can be obtained by measuring the Insertion Loss. See "Two Port Insertion Loss" Note: If data had been previously entered in [RF IN Loss], that data will be lost and replaced by the value you enter here.
5	[dB]