Technical data

20 Getting Started Guide
1 Quick-Start
E6640A Calibration Status
The E6640A EXM test set does not have a calibration certificate, because of its
flexibility in configuration:
• The E6640A chassis can have 1, 2, 3, or 4 TRXs (M9430A) installed.
• Different TRXs can have different hardware configurations for frequency range
and/or bandwidth.
• Additional TRXs can be added to an E6640A chassis after the initial instrument
purchase. These would have different calibration due dates, and different warranty
end dates, from the modules that were originally purchased with the E6640A.
There isn’t a single instrument-level calibration (or calibration due-date) that covers the
E6640A as a whole and all of the TRX modules (and the Reference module) within it.
Each module is calibrated independently, and not necessarily at the same time that the
others in the test set are calibrated.
The only way to track the calibration status of the E6640A is to track the calibration
status of the reference module, and each TRX module, within it. The serial number of a
particular module can be found from its XSA window, by selecting
System > Show >
Hardware
on the Virtual Front Panel. The serial number is listed in the row which shows
“Reference” or “M9430 TRX” under Assembly Name. The same row also shows the Cal
Date and Cal Interval for the relevant module
The same hardware information is also returned by the SCPI command:
SYST:CONF:HARD?