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KLR 10 Installation Manual
NOTE: This is a Power-On Procedure.
For calibration, the system samples power and outputs to gain accuracy. Blue segments on the KLR 10
indicator may flash several times before the electronics stabilize and stop flashing for an acceptable /
valid zero pressure point. This is normal.
Before the unit becomes functional, the operator must calibrate the 2 in-flight set points, (OAA, Cruise) of
the system.
NOTE 1:
It is not necessary to do the ground calibration once a successful value was entered.
NOTE 2:
If the KLR 10 unit is put into Calibration Mode, the operator must complete the ENTIRE
calibration process, as the system deletes the previous values: both valid OAA and Cruise
set points, (aircraft must be flown, set points entered), then exiting calibration mode, storing
the new values and putting the unit in operational mode.
4.2
SET BRIGHTNESS OF THE KLR 10 INDICATOR (OPTIONAL)
Since the colored segments will only be active when differential pressure is present, (in-flight),
Bendix/King has created a way to force ALL colored segments ON for calibration purposes allowing the
installer to preset both the daytime and nighttime display brightness levels while on the ground.
Enter the Brightness calibration mode as follows:
Ensure that power is not applied to the KLR 10.
Depress and hold the Brightness button on the KLR 10 indicator then apply power to the
KLR 10.
Continue to depress the Brightness button for about 6 seconds after power has been applied.
Release the Brightness button.
The system enters its self test causing the colored segment illumination routine. All segments are
illuminated one by one upwards and then one by one downwards ending with all the segments being
illuminated.
The system is now in Brightness calibration mode.
With a light applied directly to the photo diode on the KLR 10 indicator for at least 5 seconds,
press and release the Brightness button until the display is at its maximum brightness.
You'll know when it's max because going past it will cause the brightness of the colored segments to
return to the minimum level. There are 16 brightness steps that are sequenced through, increasing
brightness at each step.
Wait 5 seconds for the unit to store the setting then remove the light from the KLR 10 indicator.
The display's brightness will change to the lower brightness level unless the low light setting was set to
maximum brightness or the cockpit is in daylight.
Next, cover the photo diode on the display for at least 5 seconds with your thumb or a piece of
black electrical tape, quickly press and release the Brightness button on the KLR 10 indicator
until it's at a minimum or lowest level.
Wait 5 seconds for the unit to store the setting than remove your thumb or tape.
Observe that the display's brightness level changes from dim to bright when light is applied and
removed from the photo diode.
Remove power, wait a few seconds and re-apply power.
The system will enter its self test, display illumination routine in which all colored segments are
illuminated one by one upwards and then one by one downwards. The system enters the active mode if
calibration has been completed or the in-active display mode, needing OAA and Cruise calibration.
Setup and Calibration
Page 4-2
P/N D201305000058
Rev 1 Jul 2013
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