Operating Manual Vol 1 - ES Documentation

Digital Standard 3GPP W-CDMA (FDD)SMIQ----------------------General Settings------------------------------------------------------------------------------3GPP VERSION Display of current 3GPP version 3.2.0.IEC/IEEE-bus command:SOUR:W3GP:GPP3:VERS?CHIP RATELINK DIRECTIONDisplay of fixed chip rate for a 3GPP W-CDMA of 3.84 Mcps.IEC/IEEE-bus command :SOUR:W3GP:CRAT?Selecting the link direction:DOWN/FORWARDUP/REVERSEActivates downlink-signal generation. In this mode, thebase-station transmit signal can be generated.IEC/IEEE-bus command :SOUR:W3GP:LINK FORWActivates uplink-signal generation. In this mode, themobile-station transmit signal can be generated.IEC/IEEE-bus command :SOUR:WCDM:LINK REVSEQUENCE LENGTH(FRAMES)The sequence length can be set.The maximum length is 13 frames.IEC/IEEE-bus command :SOUR:W3GP:SLEN 4CLIPPING LEVEL Sets a clipping level relative to the highest peak in per cent. The value range is 1to 100 %. A value of 100% means that the signal is not clipped. Clipping reducesthe crest factor. For background information on how to use this parameter seesection 2.14.2.10.This menu item is only available with Option SMIQB48 installed. For details,see section 2.15.1.IEC/IEEE-bus command :SOUR:W3GP:CLIPP:LEV 50Fig. 2-106DIGITAL STD - WCDMA/3GPP - FILTER... menuFILTER... FILTER Selects the baseband filter.Either the W-CDMA standard filter WCDMA 0.22, thegeneral Nyquist filters COS and SQRCOS or a userdefinedfilter USER (see section Digital Modulation) canbe selected. The optimized square-root cosine filterWCDMA 0.22 is preset. Its roll-off factor is fixed at 0.22.IEC/IEEE bus :SOUR:W3GP:FILT:TYPE WCDM1125.5555.03 2.182E-9