Schneider Electric EB450 User Manual download pdf (Page 42)

Part H - Maintenance

Routine Maintenance Considerations

The E Series 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 Series 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

1 2 ... 37 38 39 40 41 42 43 44 45 46 47 ... 58 59

No comments

Schneider Electric EB450 User Manual Page 42