Digi 90000278_B manual O u t t h e D e v e l o p m e n t B o a r d, Overview

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Chapter 3 A b o u t t h e D e v e l o p m e n t B o a r d

Overview

The development board provides the following interfaces:

•A DB-9 serial interface that enables serial connections from your device to the Digi One EM module. See "DB-9 Serial Interface (P1)" on page 15.

•A 12-position socket to supply both power and ground to the Digi One EM.

•A reset switch to reboot the Digi One EM. See "Reset Switch (SW1)" on page 16.

•A standard 2.0 mm jack that accepts 5 volts DC +/- 5% from a regulated power supply. See "Power Jack (P7)" on page 17.

•Eight LEDs. One (labeled CR4) tells you if the power is on. The other seven (labeled CR5 - CR11) are active when EIA-232 signals are detected. See "LEDs (CR4 - CR11)" on page 18.

•A reserved 3-pin header (labeled P5)

Cautions

•Although the Digi One EM can handle up to 9 VDC, this voltage can harm the development board, which works only with the 5 volt regulated power supply. The board does not regulate power.

•To guard against damage to the development board due to electrostatic discharge (ESD), do not remove it from its protective packaging until you have been properly grounded. To ground yourself, put the wrist strap on (included in the package) and then attach the clip to a metal surface.

Digi One EM Hardware Reference

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Contents Hardware Reference Manual Digi One EM Page Contents Appendix B Digi One EM Certifications About This Guide T r o d u c t i o nIntroducing the Digi One EM Support Information Digi One EM Drawing O u t t h e D i g i O n e E MConnectors Power and Serial Interface P4 Connectors Ethernet Interface P1 LEDs Reset SwitchBlinking 1-1-1 means Overview O u t t h e D e v e l o p m e n t B o a r dDevelopment Board Illustration DB-9 Serial Interface P1 Pin SignalReset Switch SW1 Power Jack P7 CR9 LEDs CR4 CR11SW1 Appendix a D i g i O n e E M Specification s FCC Part 15 Class a Appendix B D i g i O n e E M C e r t i f i c a t i o n sIces 003 Class a Product SafetyDigi One EM Hardware Reference Digi One EM Hardware Reference
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