Specifications

Section-4 Theory
November 11, 2013
4‐6
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4.4.4.3 RFDetector/PumpControl/InterlocksCard
TheRFdetector/pumpcontrol/interlockscardislocatedintheTCU.Itismadeupofamainanddaughterboard.The
cardcontainssevenRMSdetectorswithadjustabletripssetbyEPOTS(electronicpotentiometers).Pumpcontrol
andinterlockwiringiscombinedononeD25pinconnectorJ3.Foranalogtransmittersthe
cardalsoservesasan
interfacetotheanalogdownconverterboardviaanotherD25connectorJ2.
Figure4‐5onpage4‐6showstheRF
Detector/PumpControl/InterlockscardconnectorsontherearoftheTCUandhowtheboardisconnectedtothe
CustomerI/Oboardatthetopofthetransmitter.
Figure 4-5 RF Detector/Pump Control/Interlocks Card