![]() Headlight Connections Remove the dummy plug and set it aside. If using an analog ohmmeter, the needle should not move. The DMM display should indicate an open circuit (infinite (∞) resistance) on all the above combinations. Measure the resistance between the following points: Motor Connections Remove the dummy plug and set it aside. If using an analog ohmmeter use the zero-adjustment knob to bring the needle to "zero". Touch the probes together to verify the meter is working, the display should show a very low resistance (0 or slightly more). You will need a DMM for this process, on the Ohms (Ω) setting. Failing to isolate the motor terminals from the rail connections will destroy your decoder. It is possible that, while the manufacturer has installed an 8-pin interface, it is wired incorrectly. When soldering wires onto the connector, use the cup side. a decoder without an F1 output can be used in a locomotive with an F1 input (but the function won't work) and a decoder with an F1 output can be used in a locomotive with an F1 input (but the function won't do anything). Decoders and locomotives with or without pin 3 in use should be interchangeable, i.e. In the case of a 'three function' or 'four function' decoder with an 8-pin plug there may be a green F1 (Function 1) wire connected to Pin 3, although this is not required by the standard specification. Pin 1 should be clearly marked on the plug and socket with a small triangle or dot. This plug and socket combination is identical to the NEM 8-pin plug and socket (defined by NEM 652) used in Europe. Although the wiring is designed to work properly one way round, no harm is done if it is inserted the other way round by mistake (but the lights will not work). This table depicts the pin assignment of the NMRA Medium 8-pin plug or 8-pin socket (both viewed from above). The NMRA recommends that this connection no longer be used by manufacturers. It lacks connections for additional functions and speakers, which are present on recent locomotive decoder interfaces. ![]() The 8-pin connection is considered obsolete and no longer supported by the NMRA.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |