LLB6327 PROGRAMMING The MTU is programmed using the “Walkabout” programmer (P/N 501-5884A) and programming probe (P/N 501-5884B). Programming may be performed by the meter vendor, the meter shop, or in the field. Even if programming is performed at the factory or meter shop, it is still necessary to use the programmer to initiate MTU operation at the time of field installation. Refer to the “Walkabout” manual for programming information.