Vicom Systems FC-FC3 Manual de usuario descargar pdf (Pagina 57)

CONFIDENTIAL [AK8999A/AW/AD]

MS1600-E-00 2014/05

- 57 -

h) Pressure threshold detector 2 (EEPROM name: PTH2, HYS2)

The operating mode, the detection threshold values and the hysteresis voltage of the comparator for

the pressure threshold detector 2 are set up.

The detector threshold voltage and the hysteresis voltage vary ratiometrically with respect to the

supply voltage.

h.1) Pressure threshold detector operating mode setup

Address : 0A hex D[7:5] = EINV2[0], EINE2[0], EIN2L[0]

D[7:5] Symbol Mode setup

D[7] EINV2[0] Pressure threshold detector output polarity setup EEPROM

0 EINV21 High output when detected (default)

1 EINV20 Low output when detected

D[6] EINE2[0] Pressure threshold detector enabled setup EEPROM

0 INT2E Pressure threshold detector 2 enable (default)

1 INT2D Pressure threshold detector 2 disable

D[5] EIN2L[0] Pressure threshold detector 2 detection threshold setup EEPROM

0 INT2< Detect pressure above threshold (default)

1 INT2> Detect pressure below threshold

h.2) Pressure threshold detector detection threshold adjustment

Address : 0A hex D[4:0] = EPT2[4:0]

EPT2[4:0] Detection threshold (V)

Description

Dec Hex Bin Detect threshold ex. VDD:5V

-16 10 10000 0.900*VDD 4.500

-15 11 10001 0.875*VDD 4.375

-14 12 10010 0.850*VDD 4.250

：：：：：

-3 1D 11101 0.575*VDD 2.875

-2 1E 11110 0.550*VDD 2.750

-1 1F 11111 0.525*VDD 2.625

0 00 00000 0.500*VDD 2.500 Default

1 01 00001 0.475*VDD 2.375

2 02 00010 0.450*VDD 2.250

：：：：：

13 0D 01101 0.175*VDD 0.875

14 0E 01110 0.150*VDD 0.750

15 0F 01111 0.125*VDD 0.625

h.3) Comparator hysteresis voltage adjustment for pressure threshold detection

Address : 0B hex D[3:2] = EHYS2[1:0]

EHYS2[1:0] Hysteresis voltage (mV)

Description

Dec Hex Bin Hysteresis voltage ex. VDD:5V

2 2 10 0.030*VDD 150.0

3 3 11 0.040*VDD 200.0

0 0 00 0.050*VDD 250.0 Default

1 1 01 0.060*VDD 300.0

1 2 ... 52 53 54 55 56 57 58 59 60 61 62 ... 67 68

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Vicom Systems FC-FC3 Manual de usuario Pagina 57

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