Why is the C or G waveform not satisfactory on my Nautel XR3?
If the C or G waveform is not a rectangular wave from 0 to 24 V, it indicates that the PA (Power Amplifier) associated with the unsatisfactory waveform is defective. The suggested solution is to replace the PA.
What to do if the RF Drive alarm LED remains on after Reset is pressed in Nautel XR3?
If the RF Drive alarm LED remains illuminated after pressing the Reset button, proceed to the RF drive tuning check.
How to troubleshoot if resistance measurement in Step 1 is greater than 1.0 MΩ in Nautel Transmitter?
If the resistance measurement in Step 1 is greater than 1.0 MΩ, it indicates that the modulator assembly associated with the RF power block is likely defective, specifically that it contains defective MOSFETs. Replace the suspect modulator assembly.
What to do if output voltage of modulators is not within 1.5 V of each other in Nautel XR3?
If the output voltage of the modulators is not within 1.5 V of each other, suspect the associated modulator.
What to do if the Temp/Inhibit alarm LED will not turn off and on as indicated in Nautel XR3?
If the Temp/Inhibit alarm LED does not turn off and on as expected, it indicates a fault within the alarm circuitry on the RF drive control PWB. This fault must be repaired before proceeding.
How to troubleshoot if resistance measurement in Step 4 is not satisfactory in Nautel XR3 Transmitter?
If the resistance measurement in Step 4 is not satisfactory, sequentially remove the modulator assembly and both RF amplifiers associated with the suspect RF power block.
What to do if PA volts to ground impedance measurement is less than 77 kΩ in Nautel Transmitter?
If the PA volts to ground impedance measurement is less than 77 kΩ, disconnect connector P1 from J1 of the RF drive control PWB and repeat the resistance measurement.
What to do if Temp/Inhibit LED was on in Nautel XR3 Transmitter?
If the Temp/Inhibit LED was on, connect the module to the test cable and perform the Temp/inhibit check.
What to do if RF Drive LED was on in Nautel XR3 Transmitter?
If the RF Drive LED was on, connect the module to the test cable and perform the RF drive tuning check.
Information on electrical hazards and safe practices.
Guidance on mitigating risks associated with lightning strikes.
Details on radio frequency hazards and safe exposure.
Measures for ensuring the safety of personnel during operation.
Guidelines for maintaining safety within the transmitter site.
Explanation of the RF power amplifier stage.
Guide to using the transmitter's graphical user interface.
How to check and interpret transmitter alarms and faults.
How to access and interpret the transmitter's event log.
Guidelines for performing regular scheduled maintenance tasks.
Procedures for standard transmitter adjustments and checks.
General| Brand | Nautel |
|---|---|
| Model | XR3 |
| Category | Transmitter |
| Language | English |
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