Welcome to the VizualDok - Here are some power aspects of Widex
All the cards are powered by 48 Volts DC from the backplane. This voltage is equilibrated to be +24V and -24V from ground. Every card contains its own DC to DC converters to satisfy its own needs.Every card has a fuse and a reverse diode protection.
The power comes from two 1 kW cartridges that share the load. For 15 baselines, the consumption is low so that one alone can be standing the load and the other might be dead unnoticed. Inspect the "DC OK" green LEDs from time to time to avoid this situation.
The power dissipation of every unit largely depends on the task it is performing.
In powersave mode the power is approximately 200Watts.
At power-up (with no software initialization), the power is 650Watts
At normal work (8 antennas, cross corr) it reaches 1.15 kW . With no cooling it would auto-destroy in less than 3 minutes.
There are two safety circuits which try to avoid this unpleasant issue,one causes recoverable standby and the other causes total shutdown.
1.
Standby circuit
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2.
Shutdown circuit
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At sea level the measured cooling parameters are as follows:
Exhaust airspeed : 13 km/h
Airflow 210 m3/h
Input power 48V, 23.4 A (1.12 kW)
Air temperature increase 15.0C (13.4 C/kW)
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