Performing a Basic 1xEVDO Transmitter Measurement

Once you have taken the access network out of service (this is necessary, for example, when you are setting the Tx Power Out level) and you have made the proper connections, you can perform 1xEVDO transmitter measurements.

Step
 		Notes
1
 		Mode
 		If your test analyzer is already performing a 1xEV-DO Over the Air measurement, you can switch quickly to 1xEV-DO Transmitter measurements by pressing [Display] and then switching OTA PN Scanner Off. If you do this, you can omit steps 2 and 3, and skip straight to Step 4.
2
 		[Tx Analyzer]
 		See above.
3
 		[1xEV-DO Anl]
 		See above.
4
 		[Chan Std]
5
 		Highlight the channel standard you want using the up and down arrow buttons.
6
 		[Select]
7
 		On [Units] select Chan or Freq.
Each time you press this softkey, the selected option changes.
8
 		Enter the channel or frequency using the numeric keypad.
9
 		[Fwd]
 		Selects the forward 1xEV-DO channel.
10
[Fr/Time Ref]
11
 		[GPS] or [External Even Sec]
 		If the sky (and hence the satellites) is not visible from the position of your analyzer, use External Even Sec as the time reference.
12
 		On [PN Offset] select Auto or Manual.
The test set defaults to Auto mode. The other choice is Manual.
  • In Auto mode the test set finds the PN Offset and displays the value in the metrics display at the bottom of the screen. The Time Offset is derived from the PN Offset that has been found.
  • In Manual mode you must enter the PN Offset, which appears in the metrics display. The Time Offset is derived from the entered PN Offset.
13
 		Connect to the access network.


NOTE: Using GPS Time Reference signals: During a 1xEVDO Analyzer measurement, a yellow triangle symbol may temporarily appear beside "GPS" in the lower right. The yellow triangle indicates that the test set is re-synching with the GPS even second pulse. Once the test set is synchronized, a green dot appears in place of the triangle. If the GPS is unavailable, a red X appears. If this happens, you must choose another reference.
NOTE: A red X will also appear beside "GPS" at the bottom right if you are using the Even Second Clock timing reference but have not set the instrument to use the Even Second Clock. If this is happening, press Fr/Time Ref and select External Even Second as your timing reference.