Nautel XR12 Operation And Maintenance Manual

Also see for XR12: Installation manual Troubleshooting manual Preinstallation manual

XR12 Operations and Maintenance Manual Operating the transmitterPage 2-22 Issue 3.1 2013-03-14Setting thresholdsIf required, you can use the Set Thresholds page - see Figure 2.17 to adjust the thresholds used tocontrol and protect the XR12 transmitter.To view the Set Thresholds page, select Settings from the Main Menu, Hardware Settings fromthe General Settings menu, Calibration Settings from the Hardware Settings menu, then SetThresholds from the Calibration Settings menu.Figure 2.17: Set Thresholds pageUse the Up and Down buttons to select the desired threshold.• Reflected Power Shutback: Sets the reference voltage for the high reflected power shutbackcircuitry.• Low B+ Voltage : Sets the reference voltage for the low B+ detection circuitry.• RF Current Shutback : Sets the reference voltage for the high RF current shutback circuitry.• Maximum Carrier Reference: Limits the maximum allowable carrier reference signal.• Minimum Carrier Reference: Limits the minimum allowable carrier reference signal.• B+ Reconnect Level : Sets the reference voltage for the reconnect detection circuitry.• DC Current zero offset: Sets the value of the dc offset used to zero the transmitter’s RF cur-rent probe.WARNING: These settings are adjusted at the factory and should notrequire any adjustment. These settings affect critical systemprotections. Making changes to these settings may void yourwarranty. Contact NAUTEL before making changes.10:18 0.00kW M-1 PM:AB Man Ex:A ManSet ThresholdsReflected Power Shutback: 85(Approximate value): 1063 W )Use the arrow keys to select a value tochange. Press EDIT to make changes.View Summary Edit Back10:18 0.00kW M-1 PM:AB Man Ex:A ManSet ThresholdsReflected Power Shutback: 85(Approximate value): 1063 W )Use the arrow keys to select a value tochange. Press EDIT to make changes.View Summary Edit Back