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Linx Technologies TRM-xxx-NT User Manual

Page 2

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Warning:

Linx radio frequency ("RF") products may be

used to control machinery or devices remotely, including machinery
or devices that can cause death, bodily injuries, and/or property
damage if improperly or inadvertently triggered, particularly in industrial
settings or other applications implicating life-safety concerns. No Linx
Technologies product is intended for use in any application without
redundancies where the safety of life or property is at risk.

The customers and users of devices and machinery controlled with
RF products must understand and must use all appropriate safety
procedures in connection with the devices, including without limitation,
using appropriate safety procedures to prevent inadvertent triggering by
the user of the device and using appropriate security codes to prevent
triggering of the remote controlled machine or device by users of other
remote controllers.

Do not use this or any Linx product to trigger an action directly
from the data line or RSSI lines without a protocol or encoder/
decoder to validate the data. Without validation, any signal from
another unrelated transmitter in the environment received by the module
could inadvertently trigger the action. This module does not have data
validation built in.

All RF products are susceptible to RF interference that can prevent
communication. RF products without frequency agility or hopping
implemented are more subject to interference. This module does
not have frequency agility built in, but the developer can implement
frequency agility with a microcontroller and the example code in Linx
Reference Guide RG-00101.

Do not use any Linx product over the limits in this data guide.
Excessive voltage or extended operation at the maximum voltage could
cause product failure. Exceeding the reflow temperature profile could
cause product failure which is not immediately evident.

Do not make any physical or electrical modifications to any Linx
product. This will void the warranty and regulatory and UL certifications
and may cause product failure which is not immediately evident.

!

Table Of Contents

1

Description

1

Features

2

Ordering Information

2

Absolute Maximum Ratings

3

Electrical Specifications

6

Typical Performance Graphs

11

Module Description

11

Theory of Operation

12

Pin Assignments

12

Pin Descriptions

14

Sending Data

14

The Data Input

15

The Data Output

15

Using the RSSI Line

16

Using the T/R_SEL Input

16

Using the Low Power Features

17

Using the READY Output

17

Using the LVL_ADJ Line

18

Baud Band Selection

19

Channel Selection

20

European Transmission Rules

23

Typical Applications

24

Power Supply Requirements

24

Antenna Considerations

25

Protocol Guidelines

26

Interference Considerations

27

Pad Layout

27

Board Layout Guidelines

29

Microstrip Details