Operating Manual Vol 1 - ES Documentation

Enhanced Functions For Digital Standard 3GPP W-CDMA (FDD)SMIQDPCCH POWERSets the channel power (-60 dB to 0 dB) of the DPCCH. If the EXTERNALPOWER CONTROL STATE switch is set to ON, this power is also the startpower for power control.Note :Starting the ADJUST TOTAL POWER menu parameter at the topmenu level of 3GPP W-CDMA adapts all the channel powers(POWER DB parameter) of the mobile stations (and, thus, also thePOWER START values of the set enhanced channel) so that theaverage overall power of all the activated channels is 0 dB withreference to the LEVEL indicated in the SMIQ display.IEC/IEEE-bus command :SOUR:W3GP:MST:ENH:POW:DPCC -30.0----------------------Specific Enhanced Channel Settings--------------------------------------------------SYMBOL RATEDisplay parameter indicating the symbol rates of the individual uplinkenhanced channels.2.15.3.3 Display of External Power Control Mode of Four Enhanced ChannelsThe current External Power Control mode of the four enhanced channels is displayed here. Thedeviation of the channel power (= ∆POW) of the set POWER START caused by the external powercontrol mechanism is displayed in graphical form.The window is shown in the SMIQ display after calculating the 3GPP W-CDMA signal triggered bySTATE = ON or MOD ON. The window is blanked out after pressing the RETURN key to be able tooperate the SMIQ during the signal output.Since a realtime update of the window in the timeslot (= 0.667 ms) is not possible for reasons of speed,an update can be performed in a more coarse time interval. Fast channel power changes are notdisplayed but the settled state of the control loop can be recognized very easily by the user.Fig. 2-173Display of external power control mode1125.5555.03 2.256 E-9