When we have been asked by our partner from Canada to provide fully operational tests of RAy3 in temperature at –40 °C (–40 °F), our technical team was happy to pick up the challenge. They always like to push the limits.
Normally every single RAy unit must pass a comprehensive range of tests in climatic chamber from –30 to 55 °C (–22 to 131 °F) as part of our standard output control.
The tests start at ambient temperature with a throughput test where both, ETH and SFP interfaces are tested. Six minutes each, transmission with maximum speed (approx. 200 million packets, max. 100 packets can be lost).
The next test is a measurement on the narrowest channel, where the quality and stability of radio parameters like RSS, MSE, watch dog etc. are controlled.
Afterwards, the ‘frost’ tests follow. The unit is switched off and the temperature goes down to –30 °C (–22 °F). After 30 minutes the unit is switched on and it must boot up without any problem within given a time. This switch on/switch off test is repeated 12 times with two-minute breaks in order to be sure the frost unit will always start under low temperature.
The same throughput tests as at normal temperature follow at low temperature.
The last step is to heat up the chamber up to 55 °C (131 °F) and repeat throughput tests again.
The only difference comparing to our standard procedure was to change the minimum temperature to –40 °C (–40 °F) for the ‘frost’ test. Fortunately, it is not a problem for our climatic chamber. Our guys were so eager to see the results that they manage to do the tests for Canadian partner within a couple of days.
It was not a surprise that all units tested passed the tests without any issues, even at –40 °C (–40 °F).
Quality and expertise are integral part of RACOM brand and success of this test shows, that our products routinely exceed its design parameters.
Therefore, if you need to operate RAy links in areas with extremely low temperatures, be certain they can deliver.