VectorStar™ MS464xB Series Microwave Vector Network Analyzer Calibration and Measurement Guide : Multiple Source Control (Option 7) : DUT Measurement Example #2—Up Converter
 
DUT Measurement Example #2—Up Converter
The DUT is an up converter with:
• a 1–2 GHz input
• a 76.5–7.5 GHz output
• The LO is fixed at 37.75 GHz and a 2nd harmonic is used
Setup
Port 1 of the VNA will drive the input of the DUT and the output will be fed to a 3743A/AX module connected to Port 2 of the VNA.
• An external synthesizer (Ext. Synth 2) will provide the LO
• Define band 1–2 GHz
• Int Src = 1/1(f+0)
• Ext Src 2 = CW 37.75 GHz
• Rcvr = 1/1(f+75.5 GHz)
Again, the FREQUENCY menu values will be limited to the Band range (1–2 GHz in this case), but the start and stop on the FREQUENCY menu can be placed anywhere within that range.
Result
External module control is activated in 3739-based modes. The receiver is enabled but the source is not. The leveling choice does not matter since the base VNA is providing source drive.