This utility checks the quality of the built-in preset calibration (when Cal OFF is displayed). It measures a short connected to Port 1. The utility limits are based on measurements of a population of known good units with allowance for drift over twelve months.
| Test Equipment | Recommended Model Number | 
| Short, Type-N (m) | 85054-60025 | 
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                             | The following notes apply to illustrations in the FieldFox Help: 
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