Correction Data Selection - Keysight E4980A User Manual

Scanner Interface
How to Use the Scanner Interface Board
Step 13. If necessary, move the cursor to the SPOT No. field and repeat steps 4 to 12
for other measurement points (frequency points).
If a test frequency is not equal to any of the correction frequencies,
correction (including OPEN, SHORT and LOAD) is not performed. In this
case, the E4980A/AL displays the raw measurement value including
additional error due to the test fixture's residuals.

Correction Data Selection

Up to 128 sets of correction data for each scanner channel can be stored in the
flash memory. Each set of correction data can be arbitrarily assigned a channel
number for selection of correction data. You can set the channel number using
the /CHO to /CH7 signals, and the /CH_VALID signals, or the :CORR:USE
command via GPIB.
Channel Selection using Front Panel
Enter the channel number in the CH field on the CORRECTION page to set the
channel number. Steps are shown below.
Step 1. Press the [Meas Setup] - CORRECTION to display the CORRECTION page.
Step 2. Use the cursor arrow keys to move the cursor to the CH field.
Step 3. Use the numeric entry keys or softkeys on the front panel to enter the channel
number.
Channel Selection using Interface Connector
You can set the channel number with the channel selection signals (/CH0 to
/CH7) and the channel valid signal (/CH_VALID). The /CH0 to /CH7 signals are
8-bit binary signals. /CH0 is the LSB (least significant bit) and /CH7 is the MSB
(most significant bit). An example is given below in
Table F-13 Example of Channel Selection
/CH0
1
0
0
0
0
0
0
-504
/CH1 /CH2 /CH3
0 0 0
1 0 0
0 1 0
0 0 1
0 0 0
0 0 0
0 0 0
Table F-13
/CH4 /CH5 /CH6
0 0 0
0 0 0
0 0 0
0 0 0
1 0 0
0 1 0
0 0 1
Keysight E4980A/AL User's Guide
/CH7 Channel
Number
0 1
0 2
0 4
0 8
0 16
0 32
0 64