Rainbow-electronics GT864-PY Manual de usuario descargar pdf (Pagina 8)

GT864-QUAD/PY Hardware User Guide

1vv0300756 Rev.0 08/05/07

Pin description:

1 VCC

2 ADC_IN (not connected in GT864-QUAD Terminal)

3 HR_IN

4 TO_IN

5 DIG_OUT (not connected in GT864-QUAD Terminal)

6 GND

Signals of Power Connector:

PIN Signal Direction Limits Description

1 VCC Input 5 – 36V Positiv power input, DC

ADC_IN or

not

connected

Input

5 – 36V

- No connection in GT864 Quad

version

- Analogue Input in GT864 PY

3 HR_IN Input 5 – 36V

Active high control line used to

switch off or reset the modem VIH

> 5V,

VIL < 0.5V Power off: 1s < t < 2s

Hard reset: t > 3.5s

TO_IN

Input

5 – 36V

Positive edge triggered signal;

used to switch on the modem VIH

> 5V, VIL < 0.5V Power on: t >

0.2s

DIG_OUT /

or not

connected

Output 5 – 36V

- No connection in GT864 Quad

version

- Digital Output in GT864 PY

6 GND Input -

Negative power (ground) input

and return path for TO_IN and

HR_IN

3.1.2 Analogue Input GT864 PY Variant

The following command has to be used to initialise and to read the status of the analogue input:

AT#ADC=1,2,0

Response:

#ADC: <digital value> e.g. #ADC: 119

ADC_ IN ≈ 0,026V x digital value

1 2 3 4 5 6 7 8 9 10 11 12 13 ... 22 23

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Rainbow-electronics GT864-PY Manual de usuario Pagina 8

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