Single Limit Limit Line This key toggles the limit line on or off. Limit line amplitude is stored even when turned off. Edit Value Press this key to change the amplitude of the limit line (upper or lower). Use the keypad to enter an amplitude value in the edit box, then press the dB key or Enter to apply the new power level and close the edit box. To exit without making a change, press Esc to cancel the entry, and Esc again to close the edit box. Limit Alarm (On Off) When turned on, the Limit Alarm sounds a repeating beep at the controller device (tablet or PC) when the trace touches the limit line. Pass/Fail Msg (On Off) When turned on, a Pass or Fail message is displayed to indicate whether the trace touches or exceeds the limit line (Fail). Limit Preset Turns both upper and lower limit lines off and clears limit amplitude settings. The next time a limit line is turned on, it will be displayed at its default amplitude level. |
Measurement | Typical End Tool | Pass/Fail Criteria |
---|---|---|
Return Loss | Load | Pass when the trace is below the limit line |
DTF Return Loss | Load | Pass when the trace is below the limit line |
Cable Loss | Short or Open | Pass when the trace is above the limit line |
VSWR | Load | Pass when the trace is below the limit line |
DTF VSWR | Load | Pass when the trace is below the limit line |