BTS FREEEMG 300, User Manual

Page: 27 / 120

25
BTS Bioengineering
BTS FREEEMG
system components
In the mother electrode there are the A/D converter, the antenna and the
battery.
In the satellite electrode there is the Signal Conditioning (preamplifier and
filter) and is reported the probe ID.
All probes are also equipped with a solid state memory buffer, to prevent
data loss for problems due to the Wi-Fi network or due to exceeding the
useful operating range.
Each probe is fitted with an LED indicating its state. The probes can be in
one of a number of different states:
• Charge: steady red LED.
During recharging the red LED is on, the probe is completely
passive and does not respond to any command. When the
battery is fully recharged or when the probe is removed from
the charger, if sufficiently recharged it passes to the “Inactive”
mode.
• Inactive: green LED which cyclically lights with a steady light
for a few seconds every 3 minutes.
In the “Inactive” mode the probes cannot be used directly by the
patient unit but are in constant standby to be activated by the
activation software. When the probe is inactive, it carries out a
scan of the radio frequencies: during the scan the green LED is
lit continuously.
• Active-Scanning: green LED which cyclically lights for a few
seconds.
In this mode the probe is searching for a patient unit on the
channel assigned during the activation phase. At intervals of