RXM-418-KH3 데이터 시트보기 (PDF) - Unspecified

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RXM-418-KH3

KH3 Series Transmitter Module

Unspecified 

Pin Assignments

Pin Descriptions

1 LADJ/GND

2 D0

3 D1

4 GND

5 VCC

6 TE

7 D2

8 D3

9 D4

10 D5

11 D6

12 D7

25 26

ANT 24

GND 23

A9 22

A8 21

A7 20

A6 19

A5 18

A4 17

A3 16

A2 15

A1 14

A0 13

27

Figure 13: KH3 Series Transmitter Pin Assignments (Top View)

Pin Descriptions

Pin Number Name I/O Description

Level Adjust. This line adjusts the output power level

1

GND /

LADJ

—

of the transmitter. Connecting to GND gives the

highest output, while placing a resistor to GND lowers

the output level.

2, 3, 7, 8, 9,

10, 11,12

D0 to D1

Data Input Lines. When TE goes high, the module

encodes the state of these lines for transmission.

I Upon receipt of a valid transmission, the receiver /

decoder replicates these lines on its output lines.

These lines are pulled to GND internally.

4, 23

GND — Analog Ground

5

VCC

— Supply Voltage

Transmit Enable Line. When this line goes high, the

6

TE

I/O

module encodes the states of the address and data

lines into a packet and transmits the packet three

times.

13, 14, 15,

16, 17, 18,

19, 20, 21, 22

24

A0 to A9

ANT

Address Lines. The state of these lines must match

I

the state of the receiver’s address lines in order for a

transmission to be accepted. These lines are pulled

to VCC internally.

— 50-ohm RF Output

Data Line Configuration. Determines whether a low

25

D_CFG

I/O

on a data line is interpreted as a zero bit or an open

bit. See the Input Type Selection section. This line is

pulled to GND internally.

26, 27

A_CFG0 /

A_CFG1

Address Configuration. These lines determine the

address bit type interpretation. See the Input Type

Selection section. A_CFG0 is pulled to GND and

A_CFG1 is pulled to VCC internally.

Figure 14: KH3 Series Transmitter Pin Descriptions

–8 –

Module Description

The KH3 Series transmitter / encoder module combines a

high-performance Surface Acoustic Wave (SAW) based transmitter with an

on-board remote control encoder. When combined with a Linx KH3 Series

receiver / decoder, a highly reliable RF link capable of transferring control or

command data over line-of-sight distances of up to 3,000 feet is formed.

The module accepts up to 8 parallel inputs, such as switches or contact

closures, and provides ten address lines for creating unique transmitter

/ receiver relationships. The KH3’s compact surface-mount package

integrates easily into existing designs and is friendly to hand production or

automated assembly.

50Ω RF OUT

(ANT)

Keyed Output

SAW

Oscillator

Address Inputs

TX Enable

A0-A9

D_CFG

D_CFG0

D_CFG1

Output Isolation RF Amplifier

& Filter

RF STAGE

Data Out

ENCODER STAGE

Parallel

Inputs

D0-D7

Figure 15: KH3 Series Transmitter Block Diagram

–9–

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