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WCDMA Multi Evaluation Measurement
R&S
®
CMW-KG4xx/-KM4xx/-KS4xx
573
User Manual 1173.9657.02 ─ 11
The "Overall Channel Info" table to the right shows results related to the entire mea-
surement duration and allows to assess the stability of the physical channels concern-
ing presence, SF and modulation type.
●
State:
On = Channel on since start of measurement
Off = Channel off since start of measurement
Var = Channel has been on and off
●
SF:
<SF> = constant spreading factor <SF>
<SF> (Var) = varying spreading factor, <SF> is smallest value
●
Modulation:
BPSK / 4PAM = constant modulation type
4PAM (Var) = BPSK and 4PAM occurred
You can use the overall channel info to verify the success of the measurement. Critical
values are:
●
"Var" values (instability)
●
State = Off for configured channels
●
Unexpected SF or modulation type
For additional information refer to
chapter 3.2.6.13, "Common View Elements"
3.2.6.4
Detailed Views: I/Q Constellation Diagram
The constellation diagram shows the modulation symbols as points in the I/Q plane.
Fig. 3-16: WCDMA multi evaluation: I/Q constellation diagram
General Description
深圳德标仪器
135-1095-0799