One Sheet Summary
Control Stack 4 Boards
The Control Cable interconnet boards are similar to the PP1 nine (9) channel boards. They have a female and male connector allowing connections between the detector cables and the power supply cables. Each section or group of 9 channels will be made-up of three channel and single channel PCBs. The exact arrangement is described by document 'Control_dist_v1.13.xls'
A typical arrangement will have a three channel section on the top and bottom position with single channel sections in the middle.
Channels have one of two connector types, FM7W2 and FM27W2.
The types are labeled Type A1, A2, B1 and B2. Type A2 uses FM7W2 connectors and type A1 is a single channel version. Type B2 uses the FW27W2 connectors and B1 is a single channels version.
The channels have surface mount resistors used to make/break the drain connections.
Type A1 & A2 cards are four (4) layer boards shown from the front side. This side has the female connectors.
Type B1 & B2 cards are eight (8) layer boards shown from the front side. The side shown has the female connectors.
Layers 3 & 5 are identical
plane layers and layers 4 & 6 are identical. These layers keeps the resistance low between the two connectors.
The boards will have a rectangular silkscreen area that can be marked for its installation location.