User's Manual

Table Of Contents

Rajant Corporation BreadCrumb

JR User Guide - PRELIMINARY

20-100035-001 Version: 1.00-pre1

1.2.4.3 GPS Data Interface

The BreadCrumb JR contains a serial GPS data interface which can be accessed through the A (GPS

TXD) and B (GPS RXD) pins of the 10-pin Amphenol connector (see Figure 4).

1.2.4.4 3.3 V Output Power

Pin G (3.3V) on the 10-pin Amphenol connector provides 3.3 V output power at 0.5 A (see Figure 4).

1.2.4.5 GPIO

Pin H (GPIO) on the 10-pin Amphenol connector provides a GPIO interface (see Figure 4) to the

BreadCrumb JR. The BreadCrumb JR firmware implements a hardware initiated Zeroize Keys and

Restore Factory Defaults feature through this interface.

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The Status LEDs (see Figure 3) indicate the current status of a BreadCrumb.

Table 2: Status LED Codes.

LED Name Status

PWR Power

LAN Ethernet connection

ERR

Error

WRN Warning

WRN & MESH

During Startup, indicates generation

and validation of cryptographic keys

RDY

Ready

MESH (blinking)

All peers are connected at less than

24 Mbps

MESH (solid)

At least one peer is connected at

24 Mbps or faster

Scrolling ERR-RDY-MESH Success/Completion

1 For a list of error and warning codes refer to Appendix A at the end of this document.