1xEV-DO Signaling
R&S
®
CMW-KG8xx/-KM8xx/-KS8xx
18
User Manual 1173.9511.02 ─ 11
glass symbol has disappeared). In this state, the connection states can be controlled
via hotkeys at the R&S
CMW and via actions at the 1xEV-DO AT.
The default settings of the R&S
CMW generally ensure a forward link signal with suita-
ble characteristics for session negotiation and connection setup. The most important
settings can be modified directly in the main view.
Checks in case of failed session negotiation
If session negotiation fails, check the following R&S
CMW settings:
●
The AT must support the selected 1xEV-DO band class.
●
The "1xEV-DO Power" must be sufficient so that the AT under test can receive the
forward link signal.
●
The external attenuation settings should be in accordance with characteristics of
the RF connection.
Performing measurements
The required settings vary depending on the measurement to be performed. However,
the general procedure outlined below is applicable to most measurements.
1. Connect your AT to the R&S
2. Open the "1xEV-DO Signaling" firmware application.
3. Configure the signaling application according to the test to be performed.
4. To turn on the forward 1xEV-DO signal, click/press ON | OFF until the "1xEV-DO
Signaling" softkey indicates the "ON" state and the hour glass symbol has disap-
peared. See also
chapter 2.2.6, "Connection States"
5. Switch on the AT.
The AT synchronizes to the forward signal and initiates a session negotiation. The
R&S
CMW enters the "Session Open" state.
6. Click/press the "Connect" hotkey and wait until the R&S
CMW has entered the
"Connected" state.
7. Use the "Go to..." softkey to switch to the measurement application. This can be a
measurement provided by the "1xEV-DO Signaling" firmware application (e.g. the
"1xEV-DO RX Measurement" or the "1xEV-DO Multi Evaluation" measurement
(option R&S CMW-KM880).
In the latter case, the softkey also selects the combined signal path scenario in the
measurement. The scenario allows to use the measurement in parallel to the sig-
naling application and configures compatible measurement settings (e.g. RF and
trigger source settings).
See also:
●
chapter 2.4.10, "Shortcut Configuration"
●
chapter 2.4.12, "RX Measurement"
8. Configure and start the measurement.
General Description
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