TM-9-2350-311-10 M109 Operator's Manual for M109A2, M109A3, M109A4 and M109A5 Download
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TM 9--2350--311--10 Change 6 5--40.3 5--2 AUTHORIZED MUNITIONS — CONTINUED 5--2.3 Authorized Propelling Charges — Continued k. Fuzes Artillery, Multi--Option (MOFA): M782 These fuzes are intended for use with fragmentation (HE loaded) and burster--type projectiles. They are automatically remote set prior to launch via an inductive communication link. There are four functional modes on these fuzes: point detonation (PD), delay (DLY), variable time (VT), and time (TIME). An electronic subassembly containing integrated circuits provides control and logic for 199.9 seconds electronic timing, and transmits a fire pulse signal for time and proximity functions. The mission data transferred from the M1155 Portable Inductive Artillery Fuze Setter (PIAFS) to the fuze is confirmed by the setter and is displayed on a Liquid Crystal Display (LCD) module found on the setter. The readout provided for the fuze setting is as follows: Fuze Menu M762 DM--52 M767 DM--74 M782 *MORE* C32 *QUIT* Fuze Setting Menu FUZE: M782 MODE: VT TIME: 187 sec SET FUZE Mode Menu TIME VT DELAY PD Time Menu 100.0 sec MULTI-- OPTION FUZE ARTILLERY (MOFA), M782 MOFA utilizes a standard M739 Safety and Arming (S&A) mechanism that is housed in a retaining cup just below the detonator block. Both setback and spin locks are used to prevent accidental arming of the S&A prior to firing. This S&A mechanism provides a safe separation distance of at least 400 calibers of projectile travel when fired. These fuzes are set remotely by a weapon equipped with auto--set fire control system or by a Portable Inductive Artillery Fuze Setter (PIAFS) M1155 (TM 9--1290--210--12&P). The setting can be changed as many times as required. This fuze is not sensitive to rain. Change 6 5--40.3/(5--40.4 blank)