Chapter 4 127
Calibration
ECal (electronic calibration)
4. Calibration
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)
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