Apollo AIM-1SL, Hardware Manual, Page: 15 / 54

10 Hardware Layout
© 2011 Apollo Security Inc.
Test D4 D5
ROM/Firmware ON OFF
RAM OFF ON
Test OK—Loading Config ON ON
Table 2. 4: AIM-1/2SL Start up LED Function
2.4.2 Normal Operation
After initialization and self tests, the LEDs will switch to normal operation and will display information about
the panel operation.
Heartbeat (D4)—Shows a constant ‘heartbeat’ (0.2 sec ON, 0.8 sec OFF) to indicate proper operation of the
panel and firmware.
Port Status (D5)—Shows activity on the serial port. Normal activity on the ports will be observed as the LED
blinks many times a second or lighted solid, depending on the amount of activity.
2.5 Firmware
The operating program for the AIM-1/2SL is stored in re-programmable flash memory. In the event that the
firmware must be re-installed or updated, no chips need to be replaced on the panel. The new program can
be loaded from the host via special software. For normal operation it is not necessary to update the firmware.
If this becomes necessary, contact your Apollo Support Representative. Firmware updating should only be
done under the recommendation and guidance of your Apollo technical support representative.
2.6 Memory Backup
The AIM-1/2SL is equipped with onboard memory to store configuration information and event data. This
memory, as well as the real-time clock, is provided with back-up power (for up to 5 days) in the event of
primary power failure. Power is supplied by a special capacitor-based circuit. Battery replacement is never
required.
If clearing of the system memory is necessary, the capacitor circuit can be 'drained' thus removing power
from the configuration memory so a completely new configuration can be loaded. See the troubleshooting
section for more information.