HA7062D Manual Rev 1.01
www.holzworth.com
Page 63 of 105
Also in the Inputs menu verify the DUT and LO frequency and power levels by clicking the Measure
Input Frequency and Power
buttons in the DUT Test and LO Test sections, respectively. LO power
levels should be in the range of
+7 to +13 dBm
for optimal measurement sensitivity.
If signal is not present at any or all read outs, check that the source is powered on, check all RF
cables/components. If signal is not present at the DUT Inputs, check that the two copper coaxial
cables are connected at the instrument front panel. Lastly, check for signal on a spectrum analyzer.
4.
The system must now be manually put into quadrature by adjusting the phase shifters and using
the DC Monitor feature which is located in the Tools
drop down list at the top left of the GUI. Adjust
each phase shifter until quadrature (0 Vdc) is achieved on both channels.
The Vdc readings in the above image should be adjusted to as close to 0Vdc as possible.
5.
When hardware and software configuration is complete, and LO power levels are within range,
click the
'Acquire'
button to begin the measurement.