#Utp receiver radio shack driver

There is no external power connected to the UTP.Ī ProCab is connected to one of the UTP cab bus receptacles.Ī single ProCab is necessary to provide a driver and a receiver circuit and ‘complete’ the RS-485 interface. Layout and Program track outputs are disconnected no load on either one.Ī single UTP is connected to the command station. Allowing perhaps +/- 10 to 20% tolerance from these measurements might be appropriate.Ī proper power supply attached and the system turned on.

It should be understood that the measurements are subject to some variation because of component tolerances. Let us start with the NCE system because only one pin configuration is involved and only one interface pin assignment label. Bend the pins ¼ inch from the end and fasten them securely in the terminal block. I cut small notches in the Euro style block and used 1 inch # 18 brass escutcheon pins to provide something to grab with test clips. Number 2 round head wood screws 5/8 inch long are just right for the Euro style terminal block, and note that they are on 8 mm centers – not 5/16th inch! Number 4 or 6 sheet metal screws ½ inch long will hold the modular connector. The nuts and washers used to hold the laminated labels can be simple hex nuts or fancy brass knurled nuts as in the photo. Countersink the holes for the four screws, on the backside of the board. I used 8-32 flat head screws and actually threaded the wood block to hold the screws that secure the interface pin assignment labels. Print the file to the correct scale and tape the print to a board to mark out the location of the mounting holes for the various components. Right click on this image, select ‘save as picture’ and save it as a JPG file. The overall dimensions are not critical the board could be larger if desired. This drawing photo shows the foundation of the breakout box, a simple board measuring 3-1/8 by 6-1/4 inches.

Utp receiver radio shack