Chapter 3
Theory of Operation
P/N 79000035_SM, Version 1.5 3 - 51 Focus 30/35 Service Manual
Functional description
One function of the side cover is to carry the internal battery unit that support the instrument. This
battery unit slides inside the battery lid and when the cover is closed and locked by Snap lock it will
make contact to the Connector board mounted in the side cover.
A Backup module on BCR board supports the replacement of the internal Battery without lost of data
for two minutes.
The Focus 30 is available with an internal radio to support robotic operations. The radio operates in
the public free 2.4GHz ISM band. It applies frequency hopping spread spectrum technology. The
radio meets FCC rules 15.247 and ETSI (European) 300.328 for worldwide license free operation.