HBK FS22DI, User Manual

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FS22DI
OPERATION
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3.3.2 Calibration
BraggMETER interrogators have a built-in traceable wavelength reference that ensures
calibrated measurements at all time. For this reason, a compulsory periodic calibration is
not required. Nevertheless, for regulatory reasons or internal rules, a periodic certified
calibration procedure is sometimes required. For those cases, the calibration service is
available and can be requested to HBK FiberSensing.
3.4 Switching On
Pressing the “ON/OFF" button (number 2 in Fig. 3.1 or number 1 in Fig. 3.2 ) will start the
interrogator. The STATUS LED (number 5 in Fig. 3.1 or number 2 in Fig. 3.2 ) will start
blinking at 2 Hz. After approximately 10 seconds it will start blinking at 1 Hz. This means
that the interrogator is already on and responsive, but the optoelectronic module is still
warming up. After approximately 60 seconds it should stay on permanently. This means
that the interrogator is able to measure.
Status LED
Blinking 2 Hz
Status LED
On
Status LED
Blinking 1 Hz
Correct
Wrong
Status LED
Blinking 2 Hz
Status LED
Blinking 5 Hz
(initialization issues)
Status LED
Blinking 1 Hz
Status LED
Blinking 5 Hz
(measurement issues)
Fig. 3.3 Switching On button actions according to pressured time
Information
If the interrogator does not start correctly, the STATUS LED will blink faster. If this happens,
please contact HBK FiberSensing technical support.
3.5 Switching Off
To avoid accidental shut-down of the interrogator, press the "ON/OFF" button (number 2
in Fig. 3.1 or number 1 in Fig. 3.2 ) between 2 and 6 seconds ( Fig. 3.4 ).
If for some reason the 6 seconds are exceeded and the button is released before 10 sec­
onds are over, the interrogator will remain ON (
Fig. 3.5 ).