Operating Manual Vol 1 - ES Documentation

Analog ModulationsSMIQ2.7.2 Broadband AM (BB-AM)In the BB-AM mode the I/Q modulator is used for amplitude modulation. Level control should be set toAUTO or ON (see section, Switching On/Off Internal Level Control).The modulation input (BB-AM) is identical with the I input of the I/Q modulator. The input impedance is50 Ω. A signal of -0.25 V to +0.25 V corresponds to an amplitude modulation of -100% to +100%.Setting the modulation depth with BB-AM is not possible.Notes: - For Broadband AM the value for the upper level limit is the same as for vectormodulation. Depending on the modulation depth, PEP can exceed the displayed valueby up to 6 dB.- Broadband AM cannot be selected together with normal AM or vector modulation.These modulation deactivate one anotherMenu selection:ANALOG MOD - BB-AMFREQ100. 000 000 0 MHz LEVEL - 30.0 dBmFREQUENCYLEVELANALOG MODVECTOR MODDIGITAL MODDIGITAL STDLF OUTPUTSWEEPLISTMEM SEQUTILITIESAMBB-AMFMPMPULSESTATEINPUT SENSITIVITYOFFON0.25V/100%Fig. 2-27Menu ANALOG MOD - BB-AM (preset setting)STATESwitches BB-AM on and off.IEC/IEEE-bus commandSOUR:AM:BBAN ONINPUT SENSITIVITYDisplay of the input sensitivity. The value cannot be changed.1125.5555.03 2.60E-8