8-8 Service Guide N5230-90014
General Purpose Maintenance Procedures PNA Series Microwave Network Analyzers
Error Terms N5230A
Accessing Error Terms
Error terms can be accessed either manually or programmatically: 
Manually
• “Front Panel Access to Error Terms” on page 8-8
Programmatically
• “GPIB Access to Error Terms” on page 8-9
• “COM/DCOM Access to Error Terms” on page 8-9
Manual Access to Error Terms
Front Panel Access to Error Terms
NOTE
Ensure the calibration correction is active by making sure that Correction 
on/OFF has a check-mark in the Calibration menu.
To access the error terms from the front panel, perform the following steps:
1. In the 
System menu, point to Service, Utilities, and then click Cal Set Viewer.
The 
Cal Set Viewer toolbar appears directly above the trace window.
2. In the 
Cal Set list, select the desired cal set.
3. Click the 
Standards/ETerms button to toggle between viewing the raw measurement 
data from the standard or the corrected error term data. Note that the title of the center 
box in the tool bar will toggle between 
Standard and Error Term.
4. In the 
Standard or Error Term list, select the standard or error term to view. Click the 
View check box.
5. Compare the displayed measurement trace to the equivalent data trace plots that start 
in “Error Term Data” on page 8-10, to previously measured data, or to the uncorrected 
performance specifications listed in Table 8-1 on page 8-10.
6. Print numerical data or print a plot of the measurement results.