Page 44
E Series Ethernet Radio – User Manual
Part H - Maintenance
Routine Maintenance
Considerations
The E 45e hardware itself does not require routine maintenance.
However all radio products contain crystal frequency references,
and the stability of these crystals changes with time. The effect
of this is that the product will slowly drift off frequency, and
eventually it will require re-calibration. E 45e radios are designed
with high quality, low drift specification references, to ensure a
long maintenance free lifespan. The length of this lifespan will
depend on the severity of temperature extremes in the operating
environment, but is normally 3–5 years. Extended frequency drift
can be detected using TVIEW+ Diagnostics “Freq error” parameter.
Generally, re-calibration is achieved by replacing the radio in the
field with a spare, and returning the radio to a service centre for
re-calibration and specification testing at moderate cost.
Routine maintenance should be performed on external equipment
subject to greater environmental stresses including antennas, RF
feeder cables, backup batteries and cooling fans (if required). This
maintenance should include testing of site commissioning figures
such as received signal strength, VSWR, P/S voltage etc.
Part H – Maintenance
