June 11, 2015, 715004754 Rev. A
Page 34
1.3.8.2 Thermal equilibrium
Under typical operating conditions the detector reaches equilibrium within a few
hours, depending on internal temperature and column temperature.
1.3.9 Startup diagnostics tests
On startup, the 2414 RI detector runs a series of automated diagnostic tests. An error
message appears if any of the tests fail. These startup diagnostic tests include:
• Central processing unit (CPU)
• Serial communication interface (SCI)
• Electrically erasable programmable read-only memory (EEProm)
•RAM
• Display test pattern
• Application program checksum verification (2414 code)
• LED verification
•Photodiode
• Purge valve verification
1.3.10 Bootloader program
The 2414 Bootloader program is a special type of program that resides permanently
in the CPU flash memory. It is responsible for CPU hardware initialization and
application-independent communications (such as Ethernet). It is also responsible for
starting the detector’s software.
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