R&S FSW-K7, User Manual

Page: 203 / 407

Remote Commands for Analog Demodulation Measurements
R&S
®
FSW-K7
203 User Manual 1173.9240.02 ─ 23
Before this command can be performed, the conversion loss table must be selected
(see
[SENSe:]CORRection:CVL:SELect
on page 202).
This command is only available with option B21 (External Mixer) installed.
Parameters:
<SerialNo> Serial number with a maximum of 16 characters
Example: CORR:CVL:SEL 'LOSS_TAB_4'
Selects the conversion loss table.
CORR:CVL:MIX '123.4567'
Manual operation: See "Mixer S/N" on page 64
Programming Example: Working with an External Mixer
This example demonstrates how to work with an external mixer in a remote environ-
ment. It is performed in the Spectrum application in the default layout configuration.
Note that without a real input signal and connected mixer, this measurement will not
return useful results.
//--------------Preparing the instrument -----------
//Reset the instrument
*RST
//Activate the use of the connected external mixer.
SENS:MIX ON
//----------- Configuring basic mixer behavior -------------
//Set the LO level of the mixer's LO port to 15 dBm.
SENS:MIX:LOP 15dBm
//Set the bias current to -1 mA .
SENS:MIX:BIAS:LOW -1mA
//----------- Configuring the mixer and band settings -------------
//Use band "V" to full possible range extent for assigned harmonic (6).
SENS:MIX:HARM:BAND V
SENS:MIX:RFOV ON
//Query the possible range
SENS:MIX:FREQ:STAR?
//Result: 47480000000 (47.48 GHz)
SENS:MIX:FREQ:STOP?
//Result: 138020000000 (138.02 GHz)
//Use a 3-port mixer type
SENS:MIX:PORT 3
//Split the frequency range into two ranges;
//range 1 covers 47.48 GHz GHz to 80 GHz; harmonic 6, average conv. loss of 20 dB
//range 2 covers 80 GHz to 138.02 GHz; harmonic 8, average conv.loss of 30 dB
SENS:MIX:HARM:TYPE EVEN
SENS:MIX:HARM:HIGH:STAT ON
SENS:MIX:FREQ:HAND 80GHz
SENS:MIX:HARM:LOW 6
SENS:MIX:LOSS:LOW 20dB
SENS:MIX:HARM:HIGH 8
SENS:MIX:LOSS:HIGH 30dB
Configuring the Measurement