Technical data
Chapter 11 11-5
Error Terms
Full Two-Port Error-Correction Procedure
9. Disconnect the short, and connect an impedance-matched load to PORT 1.
10.To measure the standard, when the displayed trace has settled, press
.
The analyzer underlines the softkey after it measures the standard.
11.Repeat the open-short-load measurements descried above, but connect the devices in
turn to PORT 2, and use the , , and
softkeys.
12.To compute the reflection correction coefficients, press .
13.To start the transmission portion of the correction, press .
14.Make a “through” connection between the points where you will connect your device
under test as shown in Figure 11-1.
NOTE
Include any adapters or cables that you will have in the device measurement.
That is, connect the standard device where you will connect your device under
test.
NOTE
The through in most calibration kits is defined with zero length. The
correction will not work properly if a non-zero length through is used, unless
the calibration kit is modified to change the defined through to the length
used. This is important for measurements of non-insertable devices (devices
having ports that are both male or both female). The modified calibration kit
must be saved as the user calibration kit, and must be selected
before the calibration is started.
15.To measure the standard, when the trace has settled, press .
The analyzer underlines the softkey label after it makes each measurement.
16.Press and select from the following two options:
• If you will be measuring devices with a dynamic range less than 90 dB, press:
.
• If you will be measuring devices with a dynamic range greater than 90 dB, follow
these steps:
a. Connect impedance-matched loads to PORT 1 and PORT 2.
NOTE
If you will be measuring highly reflective devices, such as filters, use the test
device, connected to the reference plane and terminated with a load, for the
isolation standard.
b. Activate at least four times more averages than desired during the device
measurement.
FORWARD: LOAD
LOAD
REVERSE: OPEN REVERSE: SHORT
REVERSE: LOAD
STANDARDS DONE
TRANSMISSION
USER KIT
DO BOTH FWD+REV
ISOLATION
OMIT ISOLATION ISOLATION DONE