Sony MP595 User Manual download pdf (Page 62)

AirLink MP595 / MP595W Modem User Guide

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Digital output devices

Digitaloutputdevicesarethosethathaveonlytwostatesand

thestateiscontrolledbyasignalfromtheMPmodem.Any

devicethatistobeswitchedonandofffrom3GWatcher

wouldbeinstalledasadigitaloutputdevice.

Adigitaloutputcanbeconnectedtotwoofthepinsonthe

DB15HDconnector:Pins3and11.(Thesecanbeusedfor

eitherinputoroutput.)

Note: Before using the input/output lines, you must configure them as

inputs or outputs.

Typicallyadigitaloutputdeviceshouldbeconnectedbetween

Ground(pin10)andtheoutputport(Pin3or11).

Figure 7-3: Wiring for using Pin 3 (digital output) as an electronic switch. Pin

10 is Ground.

ThedigitalI/Oportsprovideopen‐collectoroutputtoa

maximumof500

mA.

Analog input devices

Analoginputdevicesarethosethatgenerateasignalof

varyingvoltage,based onthe stateofan instrumentorgauge.

Anexampleofananaloginputdevicemightbeasensortha t

detectsthevehicle’sspeed.

Ananaloginputcanbeconnectedtofourofthepinsonthe

DB15HDconnector:Pins7,8,14,and15.

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Sony MP595 User Manual Page 62