So, how do you know when your AISI needs contractor service?
The AISI has an internal battery that supplies power to store data and firmware/software.
To get instructions and approval for AISI
battery replacement, contact the Communications-Electronics Command at DSN 987-5472 or commercial (732) 427-5472; e-mail <firstname.lastname@example.org>; or DSN 992-9982 or commercial (732) 532-9982, e-mail <email@example.com>.
Some engineer units are finding after they deploy that their automated integrated surveying instruments (AISI) aren't working right because the internal batteries need to be replaced.
If you continue to operate the AISI in an INFO 26 condition or with expired batteries you risk total loss of the AISI's memory or AISI failure.