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5 Spectrum Emission Mask
Measurements
This chapter explains how to make the spectrum emission mask (SEM)
measurement on a TD-SCDMA base transceiver station (BTS), a
TD-SCDMA repeater or a power amplifier (PA). SEM compares the
total power level within the defined carrier bandwidth and the given
offset channels on both sides of the carrier frequency, to levels allowed
by the standard. Results of the measurement of each offset segment can
be viewed separately. A Pass or Fail indication is shown in the
Measurement Bar.
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