Introduction; Jumpers And Connectors; Setting Jumpers - JHCTech KMDA-3820 User Manual

2.1 Introduction

The following sections show the internal jumper/switch settings and the external connectors and pin
assignments for applications.
The KMDA-3820 new industrial design Box computer of JHCTECH, consists of a JHC SBC(STX-I905),
a sub-card (ECD-9050) and an expansion card ECX-238/ECI-239.
The specific combination is as follows：
Model No.
STX-I905-S00X
STX-I905-T001
ECD-9050
ECX-238/ECI-239

2.2 Jumpers and Connectors

2.2.1 Setting Jumpers

You can configure your KMDA-3820 to match the needs of your application by setting the jumpers or
switches. A jumper is the simplest kind of electrical switch. It consists of two metal pins and a small
metal clip (often protected by a plastic cover) that slides over the pins to connect them. To —close "a
jumper, you connect the pins with the clip". To —open "a jumper you remove the clip". Sometimes a
jumper will have three pins, labeled 1, 2, and 3. In this case, you would connect either pins 1 and 2 or
pins 2 and 3.
The jumper settings are schematically depicted in this manual as follows:
KMDA-3820-S00X KMDA-3820-T00X
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Figure 2. 1
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User's Manual
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