3
ISOMET
2.1
LED INDICATOR
The front panel tri-colour LED indicates the operating state.
LED Stack
RED
The top LED will illuminate RED when 24Vdc supply is applied.
Normal condition is ON
YELLOW
The middle LED will illuminate YELLOW, when the RF Gate input is valid.
(Default condition = valid, unless a connection is made to pin7 of the D-type)
Normal condition is ON,
but may be OFF if the above conditions are not met
GREEN
The lower LED will illuminate GREEN when the following signals are all true:
1) RF DC power is applied and
2) Gate signal is valid and
3) Amplifier and AO thermal interlocks are valid *.
Normal condition is ON
* Thermal Interlocks
The AOM and Driver are fitted with thermostatic switches which will switch open circuit if a
predetermined temperature is exceeded. These thermal interlocks will reset once
the AO device and /
or RF driver are cooled below this temperature.
- The driver thermal switch over-temperature threshold is 50deg C
- The AOD thermal switch over-temperature threshold is 36deg C
The hysteresis of the thermal switches is 7-10deg C.
Once in a fault state the coolant temperature will need to be reduced to reset the thermal
switches.
