General Description
R&S
®
CMW-KM750/-KM751
23
User Manual 1173.9670.02 ─ 05
The ACLR limits are defined in the configuration dialog.
Fig. 3-10: Spectrum ACLR limit settings
The ACLR shall not exceed –33 dB at frequencies ±1.6 MHz from the carrier (channels
±1) and –43 dB at frequencies ±3.2 MHz from the carrier (channels ±2). The limits must
be met if the adjacent channel power is larger than –55 dBm (absolute limit); they must
hold even in the presence of switching transients.
Characteristics
Refer to 3GPP TS 34.122, section...
Specified Limit
1)
ACLR
5.5.2.2 Adjacent Channel Leakage power Ratio
(ACLR)
≤
–33 dB (channels ±1)
≤
–43 dB (channels ±2)
Note 1) For compatibility with other R&S
CMW measurements, we define the ACLR and
the limits with a relative minus sign compared to the 3GPP specification.
3.5.4 Spectrum Emission Mask
The spectrum emission mask and the Occupied Bandwidth (OBW) complement the
ACLR Limits. The limit lines of the mask and the OBW limit are defined in the configuration
dialog.
Fig. 3-11: Spectrum emission mask limit settings
The OBW shall not exceed 1.6 MHz (see 3GPP TS 34.122, section 5.5.1). The emission
mask is defined in 3GPP TS 34.122, section 5.5.2.1, as shown below. The corresponding
R&S
CMW settings (points) are also indicated.
Limit Settings and Conformance Requirements
