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EXFO FTB-500 User Manual

Page 17

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Introducing the FTB-500

FTB-500

9

LED Indicators Description

(when unit is not

connected to an

external power

source)

Off

The global level of the batteries is

above the “low-battery threshold”.

Yellow

The global level of batteries is low.

Yellow, blinking The unit and its modules would be

using more power than what is

available from batteries. Connect AC

power as soon as possible.

Red

Battery error. Contact EXFO.

Lit

Hard disk read or write operations

Red, blinking

Laser status LED.
At least one module emits an optical

signal.

Off

No modules emit signal.

Varied

Each application using the alarm

LED provides its alarm level to the

platform when needed

(Red/Yellow/Green/OFF).

If more than one application uses

the alarm LED, the LED is displayed

using the color of the most severe

alarm with red as the most severe,

followed by yellow and finally

green.

If more than one application uses

the alarm LED, the LED is blinking.

LED

Status

Meaning