Technical data

86 Chapter 3
1xEV-DO Analyzer and Over Air Test
Optional 1xEV-DO Tx and Over Air Analyzer Measurement Settings
1xEV-DO Analyzer and Over Air
Test
Setting the Pilot Dominance Limit
Pilot Dominance is only relevant to Over the Air measurements. It does not apply to
Transmitter measurements.
Pilot Dominance is the difference between the useful energy of the strongest pilot
channel and the combined energy of the lower energy active pilot channels
(expressed in dB). Ideally, this value should be very large (> 16 dB).
The E7495A/B test set includes up to nine lower energy active pilots in the pilot
dominance calculation. In live testing of 1xEV-DO networks, however, it is unlikely
that you will have as many as nine interfering pilots.
If the measured Pilot Dominance meets the limit you have set, the numeric result
displayed in the OTA PN Scanner section of the screen is displayed in green. If the
measured Pilot Dominance fails to meet the limit you have set, the result is
displayed in red font, and all metrics displayed in the metrics portion of the screen
will be displayed in gray. This is to indicate to you that the metrics you are seeing
are unreliable because the Pilot Dominance limit has not been met.
NOTE It is important to remember that the pilot dominance is always measured against the
strongest signal. If you have specified your channel of interest manually, this
channel might not necessarily be the strongest.
To Set the Pilot Dominance Limit:
2. Press [CDP Type].
3. Press the correct CDP
Type key.
There are three CDP Type options available to
you. These are Pilot, MAC 64, and MAC 128
Step Notes
Step Notes
1. [Setup]
2. Press [Plt Dom] Specify the Pilot Dominance Limit level in dB.
The minimum setting is 0.0 dB, and the maximum
setting is 20 dB
3. [dB]