MPXM2102A datasheet(8/20 Pages) FREESCALE

8 / 20 page

AN3956

Sensors

Freescale Semiconductor

Waterlevel Alarm (sub-option from above menu)

2. Waterlevel

Press

a. Liquid (cm)

UPorDN

b. Alarm system

‘b’

Alarm System

Enter your Threshold

5.50

ENTER for Activation

LARM sounds when

Threshold is reached

Press.

4.00 cm

ALARM

5.50

Press UP and DN to set the

Alarm Threshold in increments

of 0.25cm.

Press ENT to activate the

Alarm.

Alarm is now Active. Note the outputs of the current Pressure in

cm, and the Alarm Threshold point. Once crossed, the red LED will

flash as the buzzer sounds. Try activating by moving the tube up

and down in a column of water.

Temperature Sensor

1. Alti/Baro

Press

2. Waterlevel

UPorDN

3. Inertial

4. Additional

‘4’

Additional

Press

a. Weather

UPorDN

b. Weather Advanced

c. Temp Sensor

‘c’

Temperature

External Temp Sensor

1487 ADC

031 Deg C

087 Deg F

Value of the External Temperature sensor is displayed on the

screen in °C and °F

Inertial Sensor

1. Alti/Baro

Press

2. Waterlevel

UPorDN

3. Inertial

4. Additional

‘3’

3. Inertial

MMA7361L 3 Axis

Accelerometer 1.5g

Press ENTER

TRaw Values of Accel

X axis

1594

Y axis

1663

Z axis

2388

Tilt Angle

X axis

-2deg

Y axis

-4deg

Z axis

90deg

ADC values of the MMA7361L

are displayed on the screen.

Press Enter to proceed to the

next screen

ADC values are converted and

displayed on the screen as an

angle for X, Y and Z axis.

Press Enter to continue to

Free Fall Detection.

Free Fall detect

Drop carefully in Linear

Free Fall only.

FF detected!!

Drop board in linear manner to

hear buzzer detecting Free

Fall condition, and Red LED

will blink with buzzer. Exit Free

Fall and Inertial by pressing

ESC.

ENT

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