537
Spectrum Emission Mask Measurement
Meas Setup
BW Edge is selected.
3GPP2 requires the “Carrier Center to Meas BW Edge” definition. LTE conformance test requires
“Carrier Edge to Meas BW Center” and/or “Carrier Edge to Meas BW Edge” definition
• CTOCenter – From carrier center to the center of offset measuring filter*
• CTOEdge - From carrier center to the nominal –3 dB point of the offset measuring filter* closer to
the carrier
• ETOCenter – From Center Frequency - Span of Ref Channel / 2 (for lower offset), Center
Frequency + Span of Ref Channel / 2 (for upper offset) of the carrier closest to each offset to the
center of offset measuring filter*
• ETOEdge - From Center Frequency - Span of Ref Channel / 2 (for lower offset), Center Frequency +
Span of Ref Channel / 2 (for upper offset) of the carrier closest to each offset to the nominal –3 dB
point of the offset measuring filter* closer to the carrier
• *Measuring filter = Meas BW (N x Res BW)