1xEV-DO Measurements
R&S
®
CMW-KG8xx/-KM8xx/-KS8xx
280
User Manual 1173.9511.02 ─ 11
You can specify the RF frequency in two ways:
●
Enter the frequency directly. The band and channel settings can be ignored or
used for validation of the entered frequency. For validation select the designated
band. The channel number resulting from the selected band and frequency is dis-
played. For an invalid combination no channel number is displayed.
●
Select a band and enter a channel number valid for this band. The R&S
CMW cal-
culates the resulting frequency.
The relation between operating band, frequency and channel number is defined by
3GPP2 (see
In the Standalone (SA) scenario, these parameters are controlled by the measurement.
In the Combined Signal Path (CSP) scenario, they are controlled by the signaling appli-
cation.
Remote command:
(SA)
(SA)
(SA)
(CSP)
(CSP)
(CSP)
(CSP)
Frequency Offset
Offset that the R&S
CMW adds to the "Frequency".
Modifies the nominal frequencies of the active carriers. A frequency offset represents a
signal impairment; it can as well be used to simulate a moving AT, causing a Doppler
shift of the received RF signal.
In the Standalone (SA) scenario, this parameter is controlled by the measurement. In
the Combined Signal Path (CSP) scenario, it is controlled by the signaling application.
Remote command:
(SA)
(CSP)
Expected Nominal Power
Defines the nominal power of the RF signal to be measured. An appropriate value for
1xEV-DO signals is the peak output power at the DUT during the measurement inter-
val. The "Ref. Level" is calculated as follows:
Ref. Level = Expected Nominal Power + User Margin
Note:
The actual input power at the connectors must be between -47 dBm and +55
dBm (please notice also the ranges quoted in the data sheet). If all power settings are
configured correctly the actual input power equals the "Ref. Level" minus the "External
Attenuation (Input)" value.
GUI Reference
深圳德标仪器
135-1095-0799
