E1999A Datasheet, PDF (2/6 Pages) Keysight Technologies – E1999A-202 Enhanced Fast Device Tune

Measurement Overview
Fast Device Tune measurement is
performed with the phone in test mode.
This requires chipset support of the
software to cause the phone to output and
receive at a series of frequencies and
levels.
W-CDMA, cdma2000, and
1xEV-DO Device Measurement
For W-CDMA, cdma2000, and 1xEV-DO
wireless devices, Fast Device Tune
functionality is based on up to 400 steps,
of 20 ms or 10 ms duration per step. The
power step level can span the entire range
of the measurement’s input (-61 dBm to
+28 dBm). The levels can step up or
down, but the power level change between
any two adjacent power steps should be
no more than 20 dB (for 20 ms duration)
and no more than 10 dB (for 10 ms
duration). Note that the first step in the
sequence should provide a 20 dB rise to
trigger the measurement. The device may
transmit the same power sequence at up
to 20 frequencies in a single sweep (one
sweep per band).
The phone’s receiver power step sequence
must include the same number of power
steps as the transmitter’s power step
sequence. These steps can be at any
power level in the test set’s cell power
output range. While the test set is
measuring the device’s transmitter power
sequence, it also transmits a power
sequence for the device to measure (such
as determining RSSI). The receive power
step sequence does not have to be in the
same frequency band as the transmitter
power step sequence. No other
measurement can be running on the test
set when Fast Device Tune measurement
is performed.
Figure 1: W-CDMA/cdma2000/1xEV-DO Fast Device Tune
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