Installation Manual

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第四章接口

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Chapter 4 Interface

Interface Description

The table below lists the names and signal descriptions for the individual pins of the E3000H's 12-pin

connector.

。

PIN#

Signal Name

I/O

Instruction

1

NC

NC

-

2

VDD

-

3.3V power input

3

GND

-

GND

4

RX

Input

TTL-232 input

5

TX

Output

TTL-232 output

6

USB_D-

Input/ou

tput

USB_D-signal

7

USB_D+

Input/ou

tput

USB_D+signal

8

NG

-

Null

9

Buzz

output

10

LED

Input

11

NG

-

12

nTrig

Input

Trigger key input signal, hold low level for more than 10ms

to trigger reading.