1xEV-DO Measurements
R&S
®
CMW-KM8xx/-KS8xx
260
User Manual 1173.9511.02 ─ 12
3.2.9.2
Recommended Settings in Combined Signaling Mode
With open loop power control, the DUT tries to keep the sum of input and output power
constant, i.e. it increases/decreases its output power to the same extent as the BS
power UP/DOWN step. For a precise description of the "Range of Open Loop Output
Power" see 3GPP2 C.S0033.
The signaling application provides a dedicated "OLTR logic" that is activated with the
OLTR measurement.
Fig. 3-18: OLTR combined signaling measurement
To obtain meaningful OLTR results in combined signaling mode measurements, the
following strategies and settings are recommended:
●
Establish an adequate connection between the 1xEVDO signaling and the DUT:
–
use the reverse test application with constant data rates and packet sizes (min
== max) to obtain a signal with stable power level
–
use a step size
≤
30 dB
–
set the BS output power in a range such that the resulting power steps are
within the dynamic range of both DUT and R&S
CMW
●
In the 1xEVDO measurement application:
–
select the "Combined Signal Path" scenario, controlled by the signaling appli-
cation
–
select "1xEV-DO Sig<i>: Event" as trigger source
–
configure and start the OLTR measurement
General Description
深圳德标仪器
135-1095-0799
