ATP-3-09-02 Field Artillery Survey Download
Page 79 of 168
Survey Computer Systems 16 February 2016 ATP 3-09.02 6-3 Figure 6-2. Forward observer system (FOS) physical specifications—left side Handheld Terminal Unit Right Side 6-5. The right side of the HTU has two personal computer memory card international association (PCMCIA) slots and the cap for the battery or power stick compartment. The internal lithium battery is inserted into the battery compartment. For dismounted operations, the lithium battery will be used as the power source for the HTU. This compartment can also be used for the power stick that allows the HTU to receive power via a cable from the power stick to a vehicular battery (see figure 6-3 on page 6-4). 6-6. The HTU has two PCMCIA slots under the faceplate secured by six screws. 6-7. There are different kinds of personal computer (PC) cards (also called PCMCIA cards) that can be inserted in these slots. Examples include hard disk drives, fax/modems, Ethernet, compact disc read-only memory connectors, and voice recognition PC cards. 6-8. Some of these are for future capabilities, but one will be fielded with the FOS. A PC card that contains a hard disk drive will be used to transfer the FOS software to the internal hard disk drive of the HTU. The PC card drive can be 260 megabyte (MB), 340MB, or 520MB. 6-9. A PC card drive in one of the PCMCIA slots can also be used to run the FOS instead of running it from the internal HTU hard drive. The removable PC card drive must be inserted into the PCMCIA slot farthest from the battery. It would only be used in emergency situations.