Section 9 Maintenance
9-1
This section explains the maintenance procedures such as cleaning. Keeping the
MT8820A in optimum conditions assures accurate measurements.
9.1 Performance Test ...................................................... 9-3
9.1.1 Purpose and implementation timing.............. 9-3
9.1.2 Performance test items ................................. 9-3
9.1.3 Required measurement equipment............... 9-3
9.1.4 Frequency stability for reference oscillator.... 9-5
9.1.5 VSWR value for Main input/output
connector....................................................... 9-7
9.1.6 VSWR value for AUX output connector ........ 9-9
9.1.7 Output frequency of the RF signal
generator ....................................................... 9-10
9.1.8 Output level accuracy of RF signal
generator ....................................................... 9-12
9.1.9 Non-harmonic spurious ................................. 9-15
9.1.10 Harmonics ..................................................... 9-16
9.1.11 Example of performance test result record
sheet.............................................................. 9-18
9.2 Calibration.................................................................. 9-25
9.2.1 Purpose and implementation timing.............. 9-25
9.2.2 Required measurement device ..................... 9-25
9.2.3 Calibration of reference oscillator
frequency....................................................... 9-25
9.3 Cleaning..................................................................... 9-28
9.3.1 Cleaning the cabinet...................................... 9-28
9.3.2 Cleaning others ............................................. 9-28
9.4 Storage and Transportation....................................... 9-29
9.4.1 Packing.......................................................... 9-29
9.4.2 Precautions on storage and transportation ... 9-29
9.5 Troubleshooting ......................................................... 9-31
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