Specifications

32
Measurement controls
 Carrier frequency
 Frequency
 Channel
 All Pilots
 Top N Pilots
 Zoomed Pilots
 User list of Pilots
 PN Increment
Display controls
 Power display (Y-axis parameter)
- Ec/Io
-Ec
 Show value (bar graphs only)
- Ec/Io (dB)
- Ec (dBm)
- Aggregate Ec/Io (dB)
- Aggregate Ec (dBm)
- Aggregate - Peak (dB)
- Delay Spread (chips)
- Pilot Delay (chips)
Markers (trace displays only)
 Multiple markers
 Delta markers
 To Max function
 Drag and drop
Measurement results
 Peak Ec/Io
 Peak Ec
 Io
 Aggregate Ec/Io (TopN and user list only)
 Aggregate Ec (TopN and user list only)
 Aggregate - peak (TopN and user list only)
 Delay spread (TopN and user list only)
 Pilot delay
 Carrier frequency error
PPeeaakk ppiilloott ppoowweerr ((bbootthh EEcc aanndd EEcc//IIoo))
is computed by selecting the strongest peak of the
correlation for each pilot. Io is the total received power integrated across the entire
1.2288 MHz signal bandwidth.
AAggggrreeggaattee ppiilloott ppoowweerr ((bbootthh EEcc aanndd EEcc//IIoo))
is computed for a given pilot by integrating
the power received over the time dispersion of that pilot. Delay spread is the duration of
time over which this power is dispersed. Both aggregate pilot power and delay spread
are determined with respect to an Ec/Io threshold of -17 dB. The system also reports the
difference between the aggregate and peak pilot power (aggregate-peak). This
difference along with the delay spread provides a characterization of the multipath effect
on that pilot. Aggregate pilot power and delay spread are only measured for the TopN
and user list measurement types.
PPiilloott ddeellaayy
is defined as the difference in time between when a pilot signal is received
and when it should have been transmitted, as defined by GPS timing. For example, a