Modify The Cal Kit Thru Definition; Modify The Cal Kit Thru Definition - Agilent Technologies 8719ES User Manual

Calibrating for Increased Measurement Accuracy
Calibrating for Noninsertable Devices

Modify the Cal Kit Thru Definition

With this method, it is only necessary to use a thru adapter. The calibration kit thru
definition is modified to compensate for the adapter and then saved as a user kit. However,
the electrical delay of the adapter must first be found. The adapter match will degrade the
effective load match terms on both ports as well as degrade the transmission frequency
response (tracking).
1. Refer to Figure 6-19
page 6-41 for an explanation of A1, A2, and A3.
2. Perform a 1-port calibration at "Reference Port 1". Refer to Step A of
Figure 6-19 Determining the Electrical Delay Setup
3. Connect the A3 adapter to "Reference Port 1" as shown in Step B of
Connect a short to the open end of the A3 adapter.
4. Measure the delay of the adapter by pressing
5. Divide the resulting delay measurement by 2 to determine the delay of the thru and the
short in one direction.
6. Determine the offset delay of the calibration short by examining the define standard
menu (see "Define Standard Menus" on page
7. Subtract the offset delay of the short (determined in step 6) from the delay of the thru
and the short in one direction (determined in step 5). The result is electrical delay of the
thru. This value is used in the next step.
8. Modify the calibration kit thru definition by entering in the electrical delay of adapter
A3. Save this as a user kit.
For example, if A3 has 100 ps of delay, press:
Cal
CAL KIT
MODIFY STD DEFINITION
STD DONE (DEFINED)
6-46
while performing the steps in this procedure. Also refer to
MODIFY DEFINE STANDARD
SPECIFY OFFSET
RETURN
Format
DELAY
7-59).
4 x1
OFFSET DELAY
KIT DONE (MODIFIED)
Figure 6-19.
Figure 6-19.
.
0.100 G/n
SAVE USER KIT