Port Extension Compensation - Agilent Technologies 4294A Operating Manual

Calibration

Port Extension Compensation

Port Extension Compensation
Port extension compensation is used to compensate an error caused by the electrical delay
when the 7-mm port of the 42942A Terminal Adapter or 3.5-mm port of the 42941A
Impedance Probe is extended with a one-port configuration.
Port extension compensation can be performed when "42942A Terminal Adapter (
42942A
Perform the port extension compensation as follows:
Step 1. Press the
Step 2. Press the
Step 3. Press one of the keys below to set the port extension value.
Port Extension Value and Unit
Set port extension value in delay time
Set port extension value in electrical length
The current port extension value is displayed in the setting parameter area of the LCD's
upper-left side.
Step 4. Use the keys or rotary knob of the ENTRY block in one of the following ways to specify
the port extension value.
•
•
•
NOTE
You can set the port extension value in either electrical length or delay time. When the port
extension value is set by one of these keys, the value is converted to the other unit and
displayed on the bottom line of the setting parameter area in small letters. You can also see
the converted value in the setting parameter area by pressing the other key.
Step 5. Press the
the key toggles your selection).
Softkey Label
EXTENSION ON off
EXTENSION on OFF
150
)" or "42941A Impedance Probe (
key to display the Calibration Menu.
[Cal]
PORT EXTENSION
Enter the desired value with the numerical keys (
one of the unit keys (
[G/n]
Turn the rotary knob ( ) until the desired value is set.
m m m m
Press the step keys ( ) to set the desired value.
[­][¯]
EXTENSION on OFF
PROBE 42941A
key to display the Port Extension Menu.
Key Stroke
VALUE (TIME)
VALUE (LENGTH)
[0]
, , , or ).
[M/m] [k/m] [´1]
key to turn on the port extension compensation (pressing
Port Extension Compensation
On (make the port extension value valid for
measurement)
Off (make the port extension value invalid for
measurement)
)" is chosen in adapter selection.
through , , ) and then press
[9] [.] [-]
Chapter 6
7mm