Does anyone know what the row of 6 LEDs on the main board are for?
Just found this so question answered!
The six LEDs are:
1. 'Boot code' if ON, Normal if Flashing, 'broken' if OFF
2. EPROM failure
3. CPU failure
4. RAM failure
5. UART failure
6. QSPI, FPGA, interpolator, GPS, power failure
In normal operation all should be off except #1 which should be flashing. Above is from page 6-29 of the Symmetricom 55300A User's Guide.
Cheers,
Corby