R&S
®
CMW 500 GSM Applications
GSM TX Measurements
Operating Manual 1202.3986.32 – 03 217
Spectral mask for the spectrum due to modulation
As an alternative to the relative limit values quoted above, the standard specifies the
following absolute limits, again depending on the frequency offset from the carrier and
the GSM band. If the relative limits are below the absolute limits, the latter shall be
applied.
Frequency offset /
[MHz]
Absolute power,
GSM400/GT800/850/900
Absolute power,
GSM1800/1900
< 0.6 –36 dBm –36 dBm
d0.6, <1.8 –51 dBm –56 dBm
d1.8 –46 dBm –51 dBm
ACP Switching Limits
The limit lines for the spectrum due to switching cover offset frequencies between 0.4
and 1.8 MHz. They depend on the output power of the mobile station. The following
limits are specified in standard 3GPP TS 51.010. Note that the figures allow for
superimposed contributions from the modulation spectrum (measured in peak hold
mode), especially at higher power levels.
GSM 400 / GT 800 / GSM850 / GSM900 Maximum MS level measured (peak hold) /
[dBm]
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