Dielectric will use the NAB Show to introduce a load solution that features closed-loop cooling. It says the purpose is to protect RF system components from failures that can cause harm to a transmission system and shelter.
It calls Optiload environmentally friendly and says it will help reduce costs.
The system uses programmable logic controls (PLCs) to sense rising RF power and temperature levels, awakening the system to take action, according to the company. Its PLCs also monitor the health of the demand-driven circulator pumps and fans that are activated to address RF flow and temperature rises.
The design includes a Dielectric water column load used as a building block. The company adds a heat exchanger responsive to PLC activations. The water column load can run without coolant flow or fans activated with powers up to 5 kW. This ensures headroom when RF is detected and the coolant and fans start to operate prior to the load seeing 5 kW.
The SNMP-enabled system is centralized to a compact cabinet with wheels that can be located in the corner and moved to a new space in a facility as transmission systems are redesigned. SNMP functionality allows the transmitter to do a daily handshake; if it doesn’t occur the station will be notified to prevent failures.
NAB Show Booth: W3333
