Shen

Shen

Shen

Shenz

z

z

zhen

hen

hen

hen KYL

KYL

KYL

KYL Communication

Communication

Communication

Communication Equipment

Equipment

Equipment

Equipment Co

Co

Co

Co.

.

.

.,

,

,

, Ltd

Ltd

Ltd

Ltd

Fax:

Fax:

Fax:

Fax: +86-0755-83408785

+86-0755-83408785

+86-0755-83408785

+86-0755-83408785

kyl03losia@gmail.com

kyl03losia@gmail.com

kyl03losia@gmail.com

kyl03losia@gmail.com

www.rf-data.com

www.rf-data.com

www.rf-data.com

www.rf-data.com

5

IV:

IV:

IV:

IV: How

How

How

How to

to

to

to use

use

use

use the

the

the

the KYL-300I

KYL-300I

KYL-300I

KYL-300I

KYL-300I provide RS-232, RS-485 and USB interface port for direct connection with

PC, RS485 devices, monolithic processors and other UART components kinds of

applications. The schematic diagram is shown below:

1.

1.

1.

1. Power

Power

Power

Power supply

supply

supply

supply

The factory default setting is +5V(7.5V-12V will inform when placing the

order).By using better ripple factor, KYL-300I transceivers can also share power

supply with other equipment. If possible, a voltage-stabilizing chip with 5V voltage

is more recommended as the only power supply than Switch power supply. But if

only switch power supply available, the jam by switch pulse to the transceivers

should be avoided. In addition, the reliable grounding must be used if there is other

device in the system equipment. In case of failing to connect with the ground, it can

form its own grounding but must be absolutely separated from the municipal

electric supply.

2. Connection

Connection

Connection

Connection Definition

Definition

Definition

Definition with

with

with

with terminal

terminal

terminal

terminal

KYL-300I transceivers supply one 9-pin connector (JP1), their definitions and

connection methods with terminals are shown in Table 1.

Table

Table

Table

Table 1:

1:

1:

1: JP1

JP1

JP1

JP1 Pin

Pin

Pin

Pin Definitions

Definitions

Definitions

Definitions and

and

and

and connection

connection

connection

connection methods

methods

methods

methods

Pin No. Signal Name

Function

Level

Connection

with terminal

Remarks

1

VCC

Power supply DC

5V

2

A (TXD)

A of RS-485(TxD of RS-232)

A(RxD)

3

B (RXD)

B of RS-485(RxD of RS-232)

B(TxD)

4

RxD

5

GND

GND

6

7

8

9