Chapter 4 71
Making SRL Measurements
How to Make SRL Measurements
Perform the SRL Cable Scan Using the VBA Utility Program
The E5061A/62A provides a macro program called srl_util.vba, which performs
SRL cable scanning.
Operation
NOTE It is recommended to do calibration before scanning a cable.
NOTE You can skip the step 1 and 4 of the following procedures if you have already loaded
the SRL utility program to setup the analyzer for the SRL Cable Scan
Step 1. Press (or ) and (or ) to activate a
trace for which you want to perform the cable scan.
Step 2. Insert the VBA utility program disk furnished with the analyzer (Agilent part
number: E5061-180x8) in to the floppy disk drive of the analyzer.
NOTE The utility program can be copied into the analyzer’s hard disk drive to be used as a
working file for easier operation.
Step 3. Press to display the softkey menu for macro processing.
Step 4. Press Load Project to display the dialog box, select srl_util.vba in the floppy disk,
and press
Open.
Step 5. Press SelectMacro - CableScan main to execute the macro program.
Step 6. The following processing is automatically performed.
• Makes the following settings: SRL - ON, sweep type - Linear Frequency,
number of points - 1601, display format -
LogMag.
• Sets the measurement parameter of the active trace to S22 (or S11) and enters
into reflection measurement status.
• Sweep five times with the frequency settings listed in the Table 4-3.
• Performs the measurement again that gives the highest SRL value of the 5
sweeps.
• Moves the active marker to the maximum value.
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