Anritsu S331C - Manual (Page 43)

Select the Frequency or Distance
Regardless of the calibration method used, the frequency range for the desired measure-
ments must be set before calibrating the Site Master. The following procedure selects the
frequency range for the calibration.
Step 1. Press the FREQ/DIST key.
Step 2. Press the F1 soft key.
Step 3. Enter the desired start frequency using the key pad or the Up/Down arrow key.
Step 4. Press ENTER to set F1 to the desired frequency.
Step 5. Press the F2 soft key.
Step 6. Enter the desired stop frequency using the keypad or the Up/Down arrow key.
Step 7. Press ENTER to set F2 to the desired frequency.
Check that the start and stop frequencies displayed match the desired measure-
ment range.
Calibration
For accurate results, the Site Master must be calibrated before making any measurements.
The Site Master must be re-calibrated whenever the setup frequency changes, the tempera-
ture exceeds the calibration temperature range or when the test port extension cable is re-
moved or replaced.
The Site Master may be calibrated manually with Open, Short, Load (OSL) calibration
components, or by using the InstaCal module provided with the system.
If a Test Port Extension Cable is to be used, the Site Master must be calibrated with the
Test Port Extension Cable in place. The Test Port Extension Cable is a phase stable cable
and is used as an extension cable on the test port to ensure accurate and repeatable measure-
ments. This phase stable cable can be moved and bent while making a measurement with-
out causing errors in the measurement.
NOTE: The test port extension cable should have the appropriate connectors
for the measurement. Use of additional connector adapters after the test port
extension cable can contribute to measurement errors not compensated for
during calibration.
3-2
Chapter 3 Getting Started