Starrett 2900 Capacitive Indicator Manuel d'utilisateur télécharger pdf (Page 11)

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Appendix B: Serial Output Connector

Pin 1 GND – Signal return

Pin 2 Serial Receive Data Input (RX/RQST)

Pin 3 Serial Transmit Data Output (TX/DATA)

Pin 4 Remote Zero – Special Order Only

State Change High to Low

Serial Input Voltage Level Speciﬁcation

Logic “0” Vin < 1.30 Volts

Logic “1” Vin > 1.98 Volts

Serial Output Voltage Level Speciﬁcation

Minimum Maximum

Low Level Vss

Vss +0.25 @ -1.5mA Load

High Level Vdd –0.25 @ 1.25 mA Load

Vdd

Note: Vss = 0 Volts, Vdd = 2.7 to 3.6 Volts

Environmental Consideration

Temperature 10-30 °C,

Humidity 30-85%RH (no condensation)

Atmosphere Non-corrosive, Non-ﬂammable

IP67 Rating (Ingress Protection Rating)

6 No ingress of dust

7 No ingress of water when submerged to 1m deep for 30 minutes

IP67 rating

assured only

if all parts

listed right are

attached and

tightly secured

Spindle Bellows

Back-lug with Gasket

Stem Cap

Data Output Cover or Data Cable with Gasket

Battery Door with Gasket

Pin 1

Pin 2

Pin 3

Pin 4

2900 Capacitive Series Indicator User Manual

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Starrett 2900 Capacitive Indicator Manuel d'utilisateur Page 11