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First noticed a high-pitch sound from a TRH fan. Chris detemined determined it was the 16m TRH. The propeller had come off the shaft, and was not repairable. Swapped the 16m and 2m TRHs, so that now the 2m TRH does not have fan ventilation. And, the ventilation of the 16m TRH has not been working for some period of time. Need to replace the 2m TRH.
Initial licor 7500 serial port configuration:
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card | SN |
|---|---|
viper | #7, 3284 |
emerald 0, EMM-8M | W250017 |
emerald 1, EMM-8M | W237191 |
power | W248060 |
Tried increasing the sampling rates of the licors to 20 Hz, 19200 baud. The number of spurious interrupts increased to somewhere around 600+. The system was generally keeping up, as shown by data_stats, but sometimes things looked bad. So reduced the rates back to 10Hz, 9600 baud. The system runs well, with a background level of around 170 spurious interrupts/sec.
The licor message length is between 44 and 49 characters. So at 20Hz this is roughly 10bits * 49 * 20/sec = 9800 bits/sec, so we must use 19200 baud instead of 9600.