The MMU-16E is a Malfunction Management Unit (MMU) which meets or exceeds all specifications of Section 4 of the NEMA TS2-2003 Standard. It operates in either a TS2 Type-1 or Type-2 cabinet. Both cabinets require that an MMU be interfaced to the controller via the TS2 standardized high-speed SDLC serial bus. The MMU-16E can also operate as a Type-16 or a Type-12 MMU. Type-16 mode provides 16 channels (typically 8 vehicle, 4 ped, 4 overlap), where each channel consists of three 120 VAC inputs (green/Walk, yellow, red/Don't Walk). Type-12 mode provides 12 channels (typically 8 vehicle, 4 overlap), where each channel consists of four 120 VAC inputs (green, yellow, red, Walk). Type-12 mode provides downward compatibility with a Conflict Monitor Unit (CMU) conforming to TS1. The MMU-16E can serve as an MMU in a TS2 cabinet by any manufacturer or as a spare for a CMU in any 12-channel TS1 cabinet.
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