Operating Manual Vol 1 - ES Documentation

SMIQRF Level2.5 RF LevelThe RF level can be set directly using the [LEVEL] key (cf. Section 2.2.6) or by accessing the LEVELmenu.In the LEVEL-LEVEL menu, the set RF output level is indicated under AMPLITUDE. A two-line leveldisplay appears for digital modulation or digital standard. The upper line indicates the average power(LEVEL), the lower line the peak envelope power (PEP) of the modulated RF output signal.The input value of level settings effected in the LEVEL-LEVEL menu directly corresponds to the RFoutput level.The input value of the level settings opened using the [LEVEL] key mathematically considers the offsetof an attenuation/amplification element which is possibly series-connected (cf. Section 2.5.1). This offersthe possibility of entering the desired level at the output of series-connected instruments, the SMIQ thenalters the RF output level correspondingly. The offset can also be entered in the LEVEL-LEVEL menu.dBm, dBµV, mV and µV can be used as level units. The 4 unit keys are directly labeled with these units.In order to change to another level unit, simply press the desired unit key.Notes: - The message ERROR is displayed in the status line if the level set in the overrange isnot reached.- For digital modulation or digital standard, a WARNING message appears in the statusline if the set LEVEL or the displayed PEP are overranged. If the set level cannot begenerated as an overrange value, ERROR will be displayed.- Further settings: Level sweep menu SWEEPMenu selection:LEVEL - LEVELFig. 2-18Menu LEVEL (preset setting) POWER RESOLUTION is set to 0.01 dBAMPLITUDEInput value of the RF level at the RF output connector.IEC/IEEE-bus command SOUR:POW -301125.5555.03 2.47E-8