
Service
Automated Performance Tests
SRC MATCH XX | Measures reflection at port XX when the port is switched to |
| the test set’s REFLECTION port, which is terminated with |
| a precision load. Tests the specified performance of “Source |
| Match,” listed in Table |
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| Steps: |
| •Set specified frequency for test set. |
| •Perform reflection |
| of cable (using short, open, and load). |
| •Connect precision load to test set’s REFLECTION port. |
| •Measure reflection (S 1) at each port XX connected to test |
| 11 |
| set’s REFLECTION port. |
| •If spec is 16 dB, trace must be below −16 dB. |
LD MATCH INT XX |
|
Measures reflection at port XX when the port is terminated | |
| with the internal load (port XX is not switched to either the |
| test set’s REFLECTION port or TRANSMISSION port). |
| Tests the specified performance of “Load Match, Test Port |
| Unselected,” listed in Table |
| “Specifications.” |
|
|
| Steps: |
| •Set specified frequency for test set. |
| •Perform reflection |
| of cable (using short, open, and load). |
| •Measure reflection (S111) at each port XX when not |
| connected to test set’s REFLECTION port or |
| TRANSMISSION port. |
| •If spec is 16 dB, trace must be below −16 dB. |
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130 | Chapter 9 |