From firmware version 3.2 on (Please always update!) everything is getting easier because alarm line #1 can be pulsed by the logger. Though use these alarm devices.
Alarm devices at model side – alternatively or in addition to alarming by telemetry.
Wiring propositions which – galvanically decoupling from JLog and this way from JIVE – work with the low-active alarm lines of the logger.
Optical: LED flasher
Optical: flasher with Luxeon
Audible: interval buzzer
The simplest form – not galvanically decoupled from JIVE/JLog as above: The buzzer produces a continuous tone on alarm. The positive voltage supply (as in the fig. above) is to be considered alternatively(!) – either from the logger or (better) from another voltage source, from JIVE’s BEC or an extra alarm voltage supply. If the voltage comes from the logger (he’s getting it from the diagnostic connection of the JIVE) then no more than a current of 50mA is allowed to draw. It may happen that an analog temperature sensor is disturbed by ripple from the buzzer current (not tested).