Technical data

Chapter 3 105
1xEV-DO Analyzer and Over Air Test
Metrics Provided by the 1xEV-DO Tx and Over Air Analyzer
Measurement
1xEV-DO Analyzer and Over Air
Test
The Time Offset compares the PN Offset timing with the overall system time. This
measurement checks the start of the PN offset in comparison to the GPS signal, or to
the Even Second Clock signal. For example, PN Offset 0 should repeat exactly on
the rising edge of the Timing Reference. PN Offset 1 should repeat 52.08 µs after
the rising edge of the Timing Reference, and so forth. Any deviation in time from
that event is reported as a Time Offset.
Non Idle Power
The Non Idle Power is a measurement of the average power during an entire slot
when the acquired slot is non-idle. When all of the acquired slots are idle (that is,
when Idle Slots shows 100%), the measurement result is blanked out. The number
of slots over which the acquisition is made is determined by the Update Interval,
which itself is determined by the Meas Time setting.
Pilot + MAC Power
The Pilot + MAC Power is a measurement of the average power during the Pilot and
MAC periods. When all of the acquired slots are idle (that is, when Idle Slots shows
100%), the measurement result is blanked out. The number of slots over which the
acquisition is made is determined by the Update Interval, which itself is determined
by the Meas Time setting.
On/Off Ratio
This refers to the Idle On/Off Power Ratio, which is ratio of the Pilot + MAC Power
to the Idle Data Power. The result is blanked out when none of the acquisition slots
are idle, that is, when Idle Slots shows 0%. The number of slots over which the
acquisition is made is determined by the Update Interval, which itself is determined
by the Meas Time setting.
Idle Data Power
The Idle Data Power is a measurement of the average power during the data period
of an idle slot. When none of the acquired slots are idle (that is, when Idle Slots
shows 0%), the measurement result is blanked out. The number of slots over which
the acquisition is made is determined by the Update Interval, which itself is
determined by the Meas Time setting.
Idle Slots
The Idle Slots measurement shows as a percentage, the number of idle slots out of
the total number of slots. Exactly how this percentage figure is worked out depends
on the Averaging State you have selected.