RF Generator

Last Updated: August 29, 2007

The RF Generator tab on the RF Control window provides access to the RF Generator (source) parameters.

• Control Mode

• Frequency

• Band

• ARFCN

• Output Power

• Modulation Mode

• Modulation Frequency

• Modulation Depth

• Modulation Deviation

• Waveform File

• Run Mode

• External ARB Output Trigger

• Output Port

Control Mode

This parameter sets the RF generator frequency control mode, either Auto or Manual. When set to Manual, you can specify the RF generator frequency.

SCPI command: RFGenerator:CONTrol:FREQuency:AUTO:GCALibration[?]

Frequency

This parameter sets the RF generator frequency.  

SCPI command: RFGenerator:FREQuency:GCALibration[?]

Band

This parameter sets the GSM/GPRS band. The test set's RF source and RF analyzer are automatically set to the appropriate frequencies for the band you specify.  

SCPI command: TRANsceiver:BAND:GCALibration[?]

ARFCN

This parameter sets the ARFCN for the currently selected GSM/GPRS band.

SCPI command: TRANsceiver:CHANnel(:DCS|:EGSM|:GSM450|:GSM480|:GSM750|:GSM850|:PCS|:PGSM|:RGSM)[?]

Output Power

This parameter performs two functions: (1) sets the RF generator power level and (2) sets the RF generator power state to on or off.    

SCPI command: RFGenerator:POWer[:SAMPlitude]:GCALibration[?]

Modulation Mode

This parameter sets the RF generator modulation mode. The following selections are available:

• Continuous wave (CW)

• Amplitude modulation (AM)

• Frequency modulation (FM)  

• Double sideband suppressed carrier (DSB-SC)

• Arbitrary waveform generator (ARB)

SCPI command: RFGenerator:MODulation:GCALibration[?]

Modulation Frequency

This parameter sets the RF generator modulation frequency. This setting only applies when the modulation mode is set to AM, FM, or DSB-SC.

SCPI command: RFGenerator:MODulation:FREQuency:GCALibration[?]

Modulation Depth

This parameter sets the RF generator AM depth. This setting only applies when the modulation mode is set to AM.

SCPI command: RFGenerator:AM:DEPTh:GCALibration[?]

Modulation Deviation

This parameter sets the RF generator FM deviation. This setting only applies when the modulation mode is set to FM.

SCPI command: RFGenerator:MODulation:FM:DEViation:GCALibration[?]

Waveform File

This parameter sets the arbitrary waveform (ARB) file from the ARB random access memory (RAM) disk directory.

When a file is selected it is loaded into the ARB memory so that it can be run.

The following waveforms are available:

• GSM_Bch7Dummys
  This waveform comprises of: a BCH on slot zero; slots 1-7 are dummy bursts; and the file is 208 frames in length.

• GSM_Bch7Normals
  This waveform comprises of: a BCH on slot zero; slots 1-7 are normal bursts; and the file is 208 frames in length.

• EGPRS_TSC5
  This waveform comprises of: an EGPRS TSC5 normal burst on slot zero; slots 1-7 are off; and the file is 1 frame in length.

In all these waveforms the data sections contain random data.

SCPI command: RFGenerator:AWAVeform:SELection

Run Mode

This parameter sets the ARB run mode. Setting this command to:

• Run starts running the ARB file from the beginning.

• Stop provides no output and turns the TSP IF off.  

SCPI command: RFGenerator:AWAVeform:RUN[?]

External ARB Output Trigger

This parameter sets the external ARB output trigger. The external trigger drives the rear panel BBP TRIG OUT BNC connector.

SCPI command: RFGenerator:AWAVeform:TRIGger:EXTernal[:OUTput][?]

Output Port

This parameter sets the RF output port destination: RF In/Out or RF Out Only.  

SCPI command: RFGenerator:OUTPut[:DESTination]