UNL Globe Temperature and Power Box (Power/GT)

This unit provides fusing (2A) and switching of the supply to the instruments. A diode is connected in series with the supply line to protect against polarity reversal of the battery.

The unit provides a regulated 10V supply for the Sound Level Meter (SLM) and for the on board temperature sensor used to indicate Globe Temperature.

It also provides a simple monitoring system for the state of the main battery.

Power/GT Connections

1Battery +Ve input
2Globe Temp +Ve
3Globe Temp -Ve
412v +Ve output
5N/C
6Battery and 12V -Ve
7Earth

Note

Pins 3, 6 and 7 are all connected to Earth in this box.

SLM Power Connector

Inner+10V
OuterEarth