Led Indication - Hanna Instruments HI8510 Instruction Manual

All LEDs above the keys indicate the state of each function, whether it
is active or the display is indicating the mode.
For HI8711 only
Each LED can be in one of the following states:
A) Light on
B) Light blinking 25% on, 75% off
C) Light blinking 75% on, 25% off
D) Light off

LED INDICATION

The mode is displayed on the LCD but
is not active, e.g. the alarm setpoint
is displayed but the alarm contact is
open.
The mode is not displayed but it
is active, e.g. the alarm contact is
opened but the alarm setpoint is not
displayed.
The mode is active and being dis‑
played.
The function is neither active nor
displayed.
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