Anritsu MT8212E - Page 369

Cable and Antenna Analyzer 2-7 1-Port Measurements
Cable & Antenna Analyzer MG PN: 10580-00241 Rev. B 2-23
2-7 1-Port Measurements
Phase Measurements
The instrument can display 1-port phase measurements. The following example compares the
phase of two cables using a 1-port phase measurement.
1. Press the Measurements main menu key
2. Press the More submenu key.
3. Press the 1-Port Phase key.
4. Press the Freq/Dist main menu key and set the start frequency and stop frequency.
5. Press Shift and Calibrate (2) to calibrate the instrument. See Chapter 3, “Calibration”
for details.
6. Connect device under test (Cable A) and press Copy Trace To Display Memory.
7. Remove the first device under test and connect the second device under test (Cable B).
8. Press the Trace – Memory key to view the difference between Cable A and Cable B.
Smith Chart
The instrument can display 1-port measurements in a standard Normalized 50 ohm
Smith Chart. When markers are used, the real and imaginary components of the Smith Chart
value are displayed.
Anritsu Master Software Tools includes additional options and a calculator that can easily
show what the return loss, VSWR, or reflection coefficient values of a specific Smith Chart
value are.
It is possible to change the zoom size in the Amplitude menu. Expand 10 dB zooms in the
Smith Chart so that the reflection coefficient is between 0 and 0.3162. Expand 20 dB expands
the Smith Chart to show rho between 0 and 0.1 and Expand 30 dB expands to show rho
between 0 and 0.0316.
Smith Chart Measurement
The following example shows how a Smith Chart can be used to measure the match of an
antenna.
1. Press the Measurements main menu key.
2. Press the More submenu key and select Smith Chart.
3. Press the Freq/Dist main menu key and set the start frequency and stop frequency.
4. Press Shift and Calibrate (2) to calibrate the instrument. See Chapter 3, “Calibration”
for details.