Nautel XR12 Troubleshooting Manual

Also see for XR12: Installation manual Operation and maintenance manual Preinstallation manual

Contents

XR12 Troubleshooting Manual Responding to alarmsIssue 3.0 2009-07-28 Page 1-1Section 1: Responding to alarmsThis section provides instructions you need when performing troubleshooting on the XR12transmitter. This section includes the following topics:• Corrective maintenance• Electrostatic protection - see page 1-3• Identifying an alarm - see page 1-4• Responding to alarms - see page 1-9• Troubleshooting RF power modules - see page 1-25If none of the procedures and alarms described in this section address your problem, contact Nautelfor assistance. See “Technical support” on page ix .Corrective maintenanceCorrective maintenance procedures consist of identifying and correcting defects or deficiencies thatarise during transmitter operation. Local and/or remote alarm signals are generated when amalfunction occurs. If an alarm condition is caused by a malfunction in the RF power stage, thetransmitter may maintain operation at a reduced RF output level. The nature of the fault – and stationpolicy – will dictate whether an immediate maintenance response is necessary. Fault analysis andrectification may be conducted from three different levels, with a different technical competence levelrequired for each: on-air troubleshooting, remote or local, and off-air troubleshooting.On-air troubleshootingOn-air troubleshooting can be performed from a remote location, or locally at the transmitter site.CAUTION:The transmitter contains many solid state devices that may be damaged ifsubjected to excessive heat or high voltage transients. Every effort must be takento ensure that circuits are not overdriven or disconnected from their loads whileturned on.