2. Usage and Maintenance
Warning Avoid mixing the battery types, e.g. Ni-MH with Alkaline or Ni-
Cd with Alkaline. s
2.3 Main Operation
2.3.1 User Attended Mode
User Attended Mode (UAM) automatically activates after the device fully
recharges, completes its start up, detects an alarm condition, or after pressing
any of the buttons. The user has full control over the device in this mode.
This mode consumes more power compared to the Unattended Surveillance
Mode (USM) because the display is active. To save power, the device reverts
to the USM state after 90 seconds (except in ID mode) when no user input is
registered and the radiation level is below the alarm levels.
User Attended Mode will always initialize in the user-set, default mode
(Doserate or Finder). This default mode can be selected using the PC soft-
ware. Refer to chapter 4.9, p. 64 for further information.
2.3.2 Unattended Surveillance Mode
Unattended Surveillance Mode (USM) is designed to maximize battery life-
time. The blinking green LED indicates that the I™ is powered
and working even though the display is deactivated. Gamma dose rate and
neutron (optional) count rate are constantly monitored.
If the ambient radiation level rises above the predefined fixed and floating
alarm levels, the device informs the user with flashing LEDs, audible and vi-
bration notifications, and the I™ will switch automatically to
User Attended Mode (UAM).
14 Interceptor™/en/5.1(4956)/Feb2010 ICx Technologies
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