3 a Wiring diagram, looking at back of test panel Fig. 44. ... The main switch has 10 voltage positions, 9 current positions, and 1 resistance position, which, by virtue of the several pin jacks, has 4 ranges. ... Binding posts Tl to T6, inclusive, are used for making external connections to track and track relay, and are only used when testing ... The test panel is of hard rubber, % in. by 14*4 in. by 10J4 in.
|Title||:||Railway Signaling and Communications|