ECal (electronic calibration)
ECal is a calibration method that uses solid-state circuit technology. ECal offers the
following advantages:
•
Simplified calibration process.
•
Shorter time required for calibration.
•
Reduced chance of erroneous operation.
•
Little degradation of performance due to wear because the ECal module employs PIN
diodes and FET switches.
1-Port Calibration Using a 2-Port ECal Module
Follow the procedure below to perform a 1-port calibration using the 2-port ECal module.
Step 1. Connect the USB port on the ECal module with the USB port on the E5070B/E5071B via a
USB cable. This connection may be made while the E5070B/E5071B's power is on.
Step 2. Connect a port on the ECal module to the test port to be calibrated.
NOTE
You can connect the ports of the ECal and the test ports of the E5070B/E5071B arbitrarily.
Connected ports can be manually specified although they are automatically detected before
data measurement. For more information, "Turning off ECal auto-detect function" on
page 131.
NOTE
If you don't use all of the ECal module's ports, connect terminations to the unused ports.
Figure 4-21
Connecting ECal module (1-port calibration)
Chapter 4
Calibration
ECal (electronic calibration)
127