Last Updated: 15 June 1995
8 VDC from the SVT racks to the Readout Electronics.
The Readout Electronics requires primary 8 VDC from the SVT racks to provide power both for the Readout Electronics and the Hybrids (through the Carrier Interfaces). The primary power will be supplied by a 50 foot cable using #12 wire and 8 pin 10 A Cinch-Jones connectors to limit the voltage drop to the RO chassis to less than 1 volt.
The power from each RO chassis to its SVT carrier interface will use two of the twisted pairs in the cable for each voltage +5D, +5A, +6, -6, and -2 VDC. The PTB card in the RO chasis will have a 50 pin IDC conncctor. 20 pins will be used for the power and returns to increase reliability. The wire path in the cable will have two #26 wires to limit the voltage drop. The shield will be grounded on the one end nearest the common grounding point to minimize ground loops.