Revision 1 45 9/10/2019
Table 4-1: Front Panel LED Functions
This LED blinks green if the system is
communicating via the high speed LAN port.
MANUAL
This LED is illuminated when the analyzer is
currently running a manual sequence. If the LED is
off, then the analyzer is running an automatic
sequence of preset events.
This LED blinks when an instruction is written to the
flash via the keypad or through the application
program. The operator should wait until the LED
stops blinking before turning the power OFF.
This LED blinks green if the unit is transmitting data
via the USB connection.
This LED blinks red if the unit is receiving data via
the USB connection.
This LED indicates that at least one alarm has been
triggered.
This LED blinks yellow if the unit is in bypass mode.
Red (blinks)
This LED is used for the following:
a) If there is a problem with the primary or backup
firmware on start-up this LED will light to indicate
copying of a good copy of the firmware from one
storage location to the other.
b) During a memory-wipe process.
c) If the LED is blinking red, it means that the
analyzer is currently in Direct Board Control Enable
mode, which is triggered through the application
This LED illuminates any time a key on the keypad is
pressed. It remains illuminated until the input from
the keypad has been processed by the electronics
assembly, and no other presses on the keypad will
be recognized until this LED turns off.
This LED illuminates any time the analyzer is
communicating via a serial link. It will illuminate for
communications on the RS-232, RS-485, or USB
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