Racal Instruments 1269 User Manual page 8

1269 User Manual
Chapter 4
Using The Enhanced Monitoring System......................................................................................... 4-1
Overview......................................................................................................................................... 4-1
Power On/Reset Defaults .............................................................................................................. 4-1
What To Do Now ............................................................................................................................ 4-3
Measuring Power Supply Voltages ............................................................................................ 4-3
Measuring Ambient Temperature............................................................................................... 4-3
Measuring VXI Slot Temperature ............................................................................................... 4-3
Measuring Fan Speed................................................................................................................. 4-4
Measuring Elapsed Time............................................................................................................ 4-4
Reading The Present State of VXI Signals ................................................................................ 4-5
Monitoring The VXI Subsystem.................................................................................................. 4-5
Programming The Tolerance Limits ........................................................................................... 4-6
Programming The Power Supply Voltage Tolerance Limits .................................................. 4-6
Programming The Fan Speed Tolerance Limits .................................................................... 4-6
Programming The Ambient Temperature Tolerance Limit..................................................... 4-7
Programming The VXI Slot Temperature Rise Tolerance Limits........................................... 4-7
Programming The VXI Bus Error and IACKn Tolerance Limits ............................................. 4-8
Reading The VXI Bus Error and IACKn Counters.................................................................. 4-9
Clearing The VXI Bus Error and IACKn Counters.................................................................. 4-9
Generating an Interrupt When an Alarm Condition is Detected........................................... 4-10
Clearing The Filter Service Alarm......................................................................................... 4-18
Change of Limit for Filter Service Alarm Example ............................................................... 4-19
Interrupt Generation Example............................................................................................... 4-19
Programming The Trigger Subsystem ..................................................................................... 4-20
Connecting The TRIG IN Input To a TTLTRG Line.............................................................. 4-21
Connecting The TRIG OUT Output To a TTLTRG Line....................................................... 4-22
Programming a Trigger Delay Time ..................................................................................... 4-23
Selecting The Trigger Delay Application .............................................................................. 4-24
Programming The Front Panel Display ................................................................................ 4-24
Turning The Display On and Off........................................................................................... 4-25
Writing a Message To The Display....................................................................................... 4-25
Clearing The Message From The Display............................................................................ 4-26
Front Panel Message Semantics ......................................................................................... 4-26
Front Panel Status Messages .............................................................................................. 4-27
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