MaxStream 9XTEND 9XTEND OEM RF Module User Manual XStream OEM RF Module

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USERS MANUAL

XTend™ OEM RF Module

XTend OEM RF Module

RF Operation

Advanced Programming

Appendices

Product Manual v1.0

For MaxStream OEM RF Module part numbers that begin with: XT09-R…, XT09-M…

1 Watt Transmit Power, 256-bit AES Encryption

355 South 520 West, Suite 180

Lindon, UT 84042

Phone: (801) 765-9885

Fax: (801) 765-9895

M100115

11.10.2004

rf-xperts@maxstream.net

www.maxstream.net

XTend™ OEM RF Module – Product Manual v1.0

No part of the contents of this manual may be transmitted or

reproduced in any form or by any means without the written

permission of MaxStream, Inc.

XTend™ is a trademark of MaxStream, Inc.

Phone: (801) 765-9885

Live Chat: www.maxstream.net

E-Mail: rf-xperts@maxstream.net

XTend™ OEM RF Module – Product Manual v1.0

Contents

XTend™ OEM RF Module 4 Appendix A: Agency Certifications 42

Features 4 FCC Certification 42

Worldwide Acceptance 4 Labeling Requirements 42

FCC Notices 43

Specifications 5

FCC-Approved Antennas (900 MHz) 44

Pin Signals 6

IC (Industry Canada) Certification 46

Electrical Characteristics 7

Timing Specifications 7 Appendix B: Development Guide 47

Mechanical Drawings 8 XTend Development Kit Contents 47

RF Operation 9 Interfacing Hardware 47

MaxStream XTIB-R RS-232/485 Interface Board 48

Serial Communications 9

Adapters 50

UART-Interfaced Data Flow 9

Antennas 51

Serial Data 9

Interfacing Protocols 52

Flow Control 10

RS-232 Operation 52

Modes of Operation 11

RS-485 (2-wire) Operation 54

Idle Mode 11

RS-485 (4-wire) & RS-422 Operation 55

Transmit Mode 11

X-CTU Software 57

Receive Mode 13

Shutdown Mode 13 Appendix C: Additional Information 58

Sleep Mode 14

1-Year Warranty 58

Command Mode 15

Ordering Information 58

RF Communication Options 17

Contact MaxStream 59

Addressing Options 17

Streaming Mode 18

Acknowledged Mode 19

Multi-Transmit Mode 21

Advanced Programming 22

Programming the Module 22

AT Command Example 22

Binary Command Example 22

Command Descriptions (short) 23

Command Descriptions (long) 24

XTend™ OEM RF Module – Product Manual v1.0

XTend™ OEM RF Module

The XTend OEM RF Module is MaxStream’s longest range drop-in

wireless solution. The module transfers a standard asynchronous serial

data stream between two or more modules and sustains RF data rates

up to 120,000 bps.

Features

Long Range

1 Watt Power Output (1 mW – 1 W, variable)

Range (@ 9600 baud):

• Indoor/Urban: up to 3000’ (900 m)

• Outdoor line-of-sight:

up to 14 miles (22 km) w/ dipole antenna

• Outdoor line-of-sight:

up to 40 miles (64 km) w/ high gain antenna

Range (@ 115200 baud):

• Indoor/Urban: up to 1500’ (450 m)

• Outdoor line-of-sight:

up to 7 miles (11 km) w/ dipole antenna

• Outdoor line-of-sight:

up to 20 miles (32 km) w/ high gain antenna

Easy-to-Use

2.8 to 5.5 V power supply

Continuous RF data stream

up to 115.2 kbps

No configuration required

Advanced configurations available

through standard AT Commands

Transparent Operation

(Wireless links replace serial wires)

Portable

(small form-factor easily designed into a

wide range of data radio systems)

Software-selectable I/O interfacing rates

MODBUS, , , , (& more)

I/O Support

Support for multiple data formats

(parity, start and stop bits, etc.)

XII™ Interference Immunity

Power-saving Shutdown & Sleep Modes

Free & Unlimited Technical Support

Receiver Sensitivity: -110 dBm (@ 9600 baud),

–100 dBm (@ 115200 baud)

Advanced Networking & Security

True Peer-to-Peer (no “master” required),

Point-to-Point, Point-to-Multipoint & Multidrop

Retries and Acknowledgements

10 hopping channels, each with over 65,000

network addresses available

FHSS (Frequency Hopping Spread Spectrum)

256-bit AES Encryption

(Refer to KY Command [p30])

Worldwide Acceptance

FCC Pending (USA) [Refer to Appendix A for FCC Requirements]

Systems that contain XTend Modules inherit MaxStream’s FCC Certification

IC (Industry Canada) Pending

ISM (Industrial, Scientific & Medical) license-free 902-928 MHz frequency band

Manufactured under ISO 9001:2000 registered standards

XTend™ OEM RF Module – Product Manual v1.0

Specifications

Table 1.1. XTend OEM RF Module

XTend 900 MHz OEM RF Module Specifications

Performance @ 10,000 bps RF Data Rate @ 120,000 bps RF Data Rate

Transmit Power Output

(software selectable using PL Command) 1 mW - 1 W (software selectable) 1 mW - 1 W (software selectable)

Indoor/Urban Range Up to 3000’ (900 m) Up to 1500’ (450 m)

Outdoor

RF line-of-sight Range

Up to 14 miles (22 km) w/ dipole antenna

Up to 40 miles (64 km) w/ high-gain antenna

Up to 7 miles (11 km) w/ dipole antenna

Up to 20 miles (32 km) w/ high-gain antenna

I/O Serial Data Rate (Baud) 1200 – 230400 bps (Software selectable) 1200 – 230400 bps (Software selectable)

Sustained Throughput 115,200 bps 115,200 bps

RF Data Rate

(software selectable using BR Command) 10,000 bps 120,000 bps

Receiver Sensitivity -110 dBm -100 dBm

Receive Current 80 mA (@ 10000 bps) 80 mA (@ 120000 bps)

Shutdown Mode Power Down < 1 µA < 1 µA

Pin Sleep Power Down 147 µA 147 µA

16 sec cyclic sleep (SM=8) 0.8 mA 0.3 mA

8 sec cyclic sleep (SM=7) 1.4 mA 0.4 mA

4 sec cyclic sleep (SM=6) 2.6 mA 0.6 mA

2 sec cyclic sleep (SM=5) 4.8 mA 0.9 mA

Idle

Currents

1 sec cyclic sleep (SM=4) 8.7 mA 1.6 mA

General

Frequency 902-928 MHz

Spread Spectrum FHSS (Frequency Hopping Spread Spectrum)

Modulation FSK (Frequency Shift Keying)

Supported Network Topologies Peer-to-Peer (“Master/Slave” relationship not required), Point-to-Point, Point-to-Multipoint & Multidrop

Channel Capacity 10 hop sequences share 50 frequencies

Encryption 256-bit AES Encryption – Refer to the KY Command [p30] to implement

Physical Properties

Module Board Size 1.44” x 2.38” x 0.20” (3.65 cm x 6.03 cm x 0.50 cm)

Weight 0.64 oz (18 g)

Connector 20-pin

Operating Temperature -40 to 85º C (industrial)

Antenna

Connector Options RPSMA (Reverse-polarity SMA) or MMCX

Impedance 50 ohms unbalanced

Certifications (visit www.maxstream.net or call (801) 765-9885 for complete list government agency approvals)

FCC Part 15.247 Pending

Industry Canada (IC) Pending

Table 1.2. XTend OEM RF Module Specifications – Relative to user-selected TX Power Output

Power Requirements (Supply voltage and TX currents relative to each TX Power Output option)

Transmit Power Output 1 mW 10 mW 100 mW 500 mW ** 1 W **

Supply Voltage 2.8 – 5.5 VDC 3.0 – 5.5 VDC 4.75 – 5.5 VDC

Transmit Current (5 V) typical 110 mA 140 mA 270 mA 500 mA 730 mA

Transmit Current (3.3 V) typical 90 mA 110 mA 260 mA 600 mA *

* 1W Power Output is not supported when using a 3.3 supply voltage.

** If the supply voltage for a given power setting is lower than the minimum supply voltage requirement (as shown in Table 1.2),

the TX Power Output will decrease to the highest power level setting given the current supply voltage.

XTend™ OEM RF Module – Product Manual v1.0

Pin Signals

Figure 1.1. XTend OEM RF Module Pin Numbers

Table 1.3. Pin Signal Descriptions

(Low-asserted signals distinguished with a horizontal line over signal name.)

Number Mnemonic I/O High Impedance

during Shutdown

Must

Connect Function

1 GND - - yes Ground

2 VCC I - yes Power: 2.8 – 5.5 VDC

General Purpose Output 2: <Default (CD=2)> Pin is driven low. Refer to the

CD Command [p26] for other configuration options.

3 GPO2 /

RX LED O yes -

RX LED: Pin is driven high during RF data reception; otherwise, the pin is

driven low. Refer to the CD Command [p26] to enable.

4 _PWR O yes -

Transmit_Power: Pin pulses low during RF transmission; otherwise, the pin

is driven high to indicate power is on and the module is not in Sleep or

Shutdown Mode.

5 DI I yes yes

Data In: Serial data entering the module (from the UART host). Refer to the

Serial Communications [p9] section for more information.

6 DO O yes -

Data Out: Serial Data exiting the module (to the UART host). Refer to the

Serial Communications [p9] section for more information.

7 I no yes

Shutdown: Pin is driven high during operation and low during Shutdown.

Shutdown enables the lowest power mode (< 1 µA) available to the module.

Refer to the Shutdown Mode [p13] section for more information.

General Purpose Input 2: reserved for future use

8 GPI2 / SLEEP I yes - SLEEP: By default, SLEEP is not used. To configure this pin to enable Sleep

Modes, refer to the Sleep Mode [p14], SM Command [p37] & PW Command

[p33] sections.

General Purpose Output 1: reserved for future use

(Clear-to-Send): <Default (CS=0)> When pin is driven low, the UART

host is permitted to send serial data to the module. Refer to the Serial

Communications [p9] & CS Command [p27] sections for more information.

9 GPO1 / /

RS-485 TX EN O yes -

RS-485 Transmit Enable: To configure this pin to enable RS-485 half and

full duplex communications. Refer to the Serial Communications [p9] & CS

Command [p27] sections.

General Purpose Input 1: reserved for future use

(Request-to-Send): By default, is not used. To configure this pin to

regulate the flow of serial data exiting the module, refer to the Serial

Communications [p9] & RT Command [p36] sections.

10 GPI1 / /

CMD I yes -

CMD (Command): By default, CMD is not used. To configure this pin to

enable binary command programming, refer to the Binary Commands [p16]

& RT Command [p36] sections.

I* no -

Configuration: Pin can be used as a backup method for entering Command

Mode during power-up. Refer to the Command Mode [p15] section for more

information.

11 /

RSSI

O* no -

Receive Signal Strength Indicator: By default, pin is used as an RSSI

PWM output after at the conclusion of the power-up sequence. Refer to the

RP Command [p35] for more information.

12-20 reserved / do not connect

* Module has 10K Ω internal pull-up resistor

** Module has 10K Ω internal pull-down resistor

*** Module has 100K Ω internal pull-up resistor

Note: When integrating the XTend Module with a Host PC Board, all lines that are not used should be left disconnected (floating).

XTend™ OEM RF Module – Product Manual v1.0

Electrical Characteristics

Figure 1.2. System Block Diagram

Basic wireless link between hosts

The data flow sequence is initiated when the first byte of data is received in the DI Buffer of the

transmitting module (XTend Module A). As long as XTend Module A is not already receiving RF

data, data in the DI Buffer is packetized then transmitted over-the-air to XTend Module B.

Timing Specifications

Figure 1.3. Timing Specifications (“A” and “B” refer to Figure 1.2)

Table 1.4. AC Characteristics (Symbols correspond with Figure 1.2 and Figure 1.3, ATSY Parameter = 0)

Symbol Description Sleep Mode 115200 Baud Rate 9600 Baud Rate

SM = 0

(No sleep) 9.4 msec 94 msec

SM = 8 16 sec 16 sec

SM = 7 8 sec 8 sec

SM = 6 4 sec 4 sec

SM = 5 2 sec 2 sec

TTX Latency from the time data is

transmitted until it is received.

SM = 4 1 sec 1 sec

TTL Time that _PWR pin (pin 4) is

driven low -- 2.45 msec 29.6 msec

TRL Time that RX LED (pin 3)

is driven high -- 2.26 msec 27.2 msec

TCLDL Time starting when goes low

until the first bit appears on DOUT -- 44 µsec 75 µsec

TCHDH Time after last bit of data until

goes high -- 7 µsec 7 µsec

XTend™ OEM RF Module – Product Manual v1.0

Table 1.5. DC Characteristics (Vcc = 2.8 – 5.5 VDC)

Symbol Parameter Condition

VOL Output Low Voltage VOL = 0.33V (IO = 6 mA)

VOH Output High Voltage VOH = VSUPPLY - 0.7V (-IO = 6 mA)

Figure 1.4. Input Thresholds vs. Supply Voltage

Input thresholds vs. supply voltage

0.5

1.5

2.5

2.5 3.5 4.5 5.5

Vcc

I/O Voltage

V(IL)

V(IH)

Mechanical Drawings

Figure 1.5. XTend Module Mechanical Drawings (with RPSMA antenna connector)

Figure 1.6. XTend Module Mechanical Drawings (with MMCX antenna connector)

XTend™ OEM RF Module – Product Manual v1.0

RF Operation

WARNING: When operating at 1 Watt power output, observe a minimum separation distance of 2’ (0.6 m) between

modules. Transmitting in close proximity of other modules can damage module front ends.

Serial Communications

The XTend OEM RF Module interfaces to a host device through a TTL-level asynchronous serial

port. Through its serial port, the module can communicate with any UART voltage compatible

device or through a level translator to any RS-232/485/422 device.

UART-Interfaced Data Flow

Devices that have a UART interface can connect directly through the pins of the XTend Module as

is shown in the figure below.

Figure 2.1. System Data Flow Diagram in a UART-interfaced environment

(Low-asserted signals distinguished with horizontal line over signal name.)

Serial Data

Data enters the XTend Module through the DI pin (pin 5) as an asynchronous serial signal. The

signal should idle high when no data is being transmitted.

The UART performs tasks, such as timing and parity checking, that are needed for

communications. Serial communication consists of two UARTs configured with compatible

parameters (baud rate, parity, start bits, stop bits, data bits) to have successful communication.

Each data packet consists of a start bit (low), 8 data bits (least significant bit first) and a stop bit

(high). The following figure illustrates the serial bit pattern of data passing through the module.

Figure 2.2. UART data packet 0x1F (decimal number “31”) as transmitted through the XTend Module

Example Data Format is 8-N-1 (bits – parity - # of stop bits)

XTend™ OEM RF Module – Product Manual v1.0

Flow Control

Figure 2.3. Internal Data Flow Diagram (The five most commonly-used pin signals shown.)

DI (Data In) Buffer and Flow Control

When serial data enters the XTend Module through the DI Pin (pin 5), the data is stored in the DI

Buffer until it can be transmitted.

When the RB and RO parameter thresholds are satisfied (refer to Transmit Mode section [p11] for

more information), the module attempts to initialize an RF connection. If the module is already

receiving RF data, the serial data is stored in the module’s DI Buffer. The DI buffer stores at least

2.1 KB. If the DI buffer becomes full, hardware or software flow control must be implemented in

order to prevent overflow (loss of data between the host and XTend Module).

Two cases in which the DI Buffer may become full and possibly overflow:

1. If the serial interface data rate is set higher than the RF data rate of the module, the module

will receive data from the host faster than it can transmit the data over-the-air.

2. If the module is receiving a continuous stream of RF data or if the module is monitoring data

on a network, any serial data that arrives on the DI pin (pin 5) is placed in the DI Buffer. The

data in the DI buffer will be transmitted over-the-air when the module no longer detects RF

data in the network.

How to eliminate the need for flow control:

1. Send messages that are smaller than the DI buffer size. The size of the DI buffer varies

according to the packet size (PK parameter) and the parity setting (NB parameter) used.

2. Interface at a lower baud rate (BD parameter) than the RF data rate (BR parameter).

Hardware Flow Control ( ). When the DI buffer is 17 bytes away from being full; by

default, the module de-asserts (high) to signal to the host device to stop sending data [refer

to FT (Flow Control Threshold, p29) and CS (GPO1 Configuration, p27) Commands.]. is re-

asserted after the DI Buffer has 34 bytes of memory available.

Software Flow Control (XON). XON/XOFF software flow control can be enabled using the FL

(Software Flow Control) Command [p28]. This option only works with ASCII data.

DO (Data Out) Buffer & Flow Control

When RF data is received, the data enters the DO buffer and is sent out the serial port to a host

device. Once the DO Buffer reaches capacity, any additional incoming RF data is lost. The DO

buffer stores at least 2.1 KB.

Two cases in which the DO Buffer may become full and possibly overflow:

1. If the RF data rate is set higher than the interface data rate of the module, the module will

receive data from the transmitting module faster than it can send the data to the host.

2. If the host does not allow the module to transmit data out from the DO buffer because of

being held off by hardware or software flow control.

Hardware Flow Control ( ). If is enabled for flow control (RT Parameter = 2, p36), data

will not be sent out the DO Buffer as long as (pin 10) is de-asserted.

Software Flow Control (XOFF). XON/XOFF software flow control can be enabled using the FL

(Software Flow Control) Command [p28]. This option only works with ASCII data.

XTend™ OEM RF Module – Product Manual v1.0

Modes of Operation

XTend OEM RF Modules operate in six modes.

Figure 2.4. XTend Modes of Operation

Module can only be in one mode at a time.

Idle Mode

When not receiving or transmitting data, the module is in Idle Mode. The module uses the same

amount of power in Idle Mode as it does in Receive Mode.

The module shifts into the other modes of operation under the following conditions:

• Serial data is received in the DI Buffer (Transmit Mode)

• Valid RF data is received through the antenna (Receive Mode)

• Command Mode Sequence is issued (Command Mode)

• Sleep Mode condition is met (Sleep Mode)

• Shutdown condition is met (Shutdown Mode)

The module automatically transitions back to Idle Mode after responding to these conditions.

Transmit Mode

When the first byte of serial data is received from the UART in the DI buffer, the module attempts

to shift to Transmit Mode and initiate an RF connection with other modules. After transmission is

complete, the module returns to Idle Mode.

RF transmission begins after either of the following criteria is met:

1. RB bytes have been received by the UART and are pending for RF transmission

[RB (Packetization Threshold) Command, p33].

2. At least one character has been received by the UART and is pending for RF transmission;

and RO character times of silence been observed on the UART [RO (Packetization Timeout)

Command, p34].

The character timeout trigger can be disabled by setting RO to zero. In this case, transmission

will not begin until RB bytes have been received and are pending for RF transmission. The RB

parameter may be set to any value between 1 and the RF packet size (PK (Max RF Packet Size,

p32), inclusive. Note that transition to Transmit Mode cannot take place during RF reception; the

RF reception must complete before the radio can transition into Transmit Mode.

If RB or RO conditions are met, the module initializes a communications channel. Serial data in

the DI buffer is grouped into RF packets (up to 2048 bytes in each packet, refer to PK

Command), converted to RF data and is transmitted over-the-air until the DI buffer is empty.

Channel initialization is the process of sending an RF initializer that synchronizes receiving

modules with the transmitting module. During channel initialization, incoming serial data

accumulates in the DI buffer.

RF data, which includes the payload data, follows the RF initializer. The payload includes up to

the maximum packet size (PK Command) bytes. As the TX module nears the end of the

transmission, it inspects the DI buffer to see if more data exists to be transmitted. This could be

the case if more than PK bytes were originally pending in the DI buffer or if more bytes arrived

XTend™ OEM RF Module – Product Manual v1.0

from the UART after the transmission began. If more data is pending, the transmitting module

assembles a subsequent packet for transmission.

Refer to the RF Communication Options [p17] section for information and state diagrams that

illustrate channel initialization and the sequence of events that follow. The XTend Module

supports the following RF Communication Options:

• Streaming Mode

• Acknowledged Mode

• Multi-Transmit Mode

RF Packet

Figure 2.5. RF Packet Components

* When streaming multiple RF packets, the RF Initializer is only sent in front of the first packet.

RF Initializer

An RF initializer is sent each time a new connection sequence begins. The RF initializer contains

channel information that notifies receiving modules of information such as the hopping pattern

used by the transmitting module. The first transmission always sends an RF initializer.

An RF initializer can be of various lengths depending on the amount of time determined to be

required to prepare a receiving module. For example, a wake-up initializer is a type of RF

initializer used to wake remote modules from Sleep Mode (Refer to the FH, LH, HT and SM

Commands for more information). The length of the wake-up initializer should be longer than the

length of time remote modules are in cyclic sleep.

Header

The header contains network addressing information that filters incoming RF data. The receiving

module checks for matching a VID, Hopping Channel and Destination Address. Data that does not

pass through all three network filter layers is discarded.

Figure 2.6. Network Layers Contained in the Header

CRC (Cyclic Redundancy Check)

To verify data integrity and provide built-in error checking, a 16-bit CRC (Cyclic Redundancy

Check) is computed for the transmitted data and attached to the end of each RF packet. On the

receiving end, the receiving module computes the CRC on all incoming RF data. Received data

that has an invalid CRC is discarded [See Receive Mode section, next page].

XTend™ OEM RF Module – Product Manual v1.0

Receive Mode

If a module detects RF data while operating in Idle Mode, the module transitions into Receive

Mode to start receiving RF packets. Once a packet is received, the module checks the CRC (cyclic

redundancy check) to ensure that the data was transmitted without error. If the CRC data bits on

the incoming packet are invalid, the packet is discarded. If the CRC is valid, the packet proceeds

to the DO Buffer.

Figure 2.7. Receive Mode Data Flow

* Refer to the Addressing Options [p17] section of

the RF Communication Options section for more

information about address recognition.

The module returns to Idle Mode when valid

RF data is no longer detected or after an error is detected in the received RF data. If serial data is

stored in the DI buffer while the module is in Receive Mode, the serial data will be transmitted

after the module is finished receiving data and returns to Idle Mode.

Shutdown Mode

Hardware Sleep

For applications where power consumption must be kept to a minimum during idle periods,

Shutdown Mode offers the lowest power mode available to the module.

When the pin (pin 7) is driven low, the module is forced into shutdown mode. Any

communication in progress (transmit or receive) will be halted and any buffered data will be lost.

For any other mode of operation, must be driven or pulled high. While in shutdown mode,

the module’s VCC pin draws less than 1 µA.

Immediately after the pin changes state from low to high, the module resets. After reset,

there is a delay that must be observed. See reset section for the delay time.

While pin is driven low, the following pins are set to high impedance by the module: DCD,

TX_PWR, RX LED, DO and (See pin signal descriptions, p6). The line (also used for

RSSI indication) is driven low during shutdown.

The following input pins may continue to be driven by external circuitry when in shutdown mode:

PIN_PWR_DWN, , DI and .

Note: Because the DO pin also goes high impedance, if the XTend Module is connected to a

processor, the UART receive pin could be floating. A weak pull-up should be placed between the

module and the microcontroller so that data isn’t interpreted as being transmitted to the

microprocessor.

XTend™ OEM RF Module – Product Manual v1.0

Sleep Mode

Software Sleep

Sleep Modes enable the XTend Module to operate at minimal power consumption when not in

use. Three Sleep Mode options are available:

• Pin Sleep (Host Controlled)

• Serial Port Sleep (Wake on Serial Port activity)

• Cyclic Sleep (Wake on RF activity)

For the module to transition into Sleep Mode, the module must have a non-zero SM (Sleep Mode)

Parameter and one of the following must occur:

1. The module is idle (no data transmission or reception) for a user-defined period of time [See

ST (Time before Sleep) Command, p39].

2. SLEEP pin (pin 8) is asserted (only for Pin Sleep option).

In Sleep Mode, the module will not transmit or receive data until the module first transitions to

Idle Mode. All Sleep Modes are enabled and disabled using SM Command. Transitions into and

out of Sleep Modes are triggered by various mechanisms as shown in the table below.

Table 2.1. Summary of Sleep Mode Configurations

Sleep Mode

Setting

Transition into

Sleep Mode

Transition out of

Sleep Mode

Commands

Typical Power

Consumption

Pin Sleep

(SM = 1)

A microcontroller can shut down and

wake modules by asserting (high)

SLEEP pin (pin 8).

Note: The module will complete a

transmission or reception even if Pin

Sleep is activated.

De-assert (low)

SLEEP pin (pin 8). SM 147 µA

Serial Port Sleep

(SM = 2)

Automatic transition to Sleep Mode

occurs after a user-defined period of

inactivity (no transmitting or receiving of

data). The period of activity is defined

using the ST (Time before Sleep)

Command.

When serial byte is

received on the DI pin

(pin 5).

SM, ST 10 mA

Cyclic Sleep

(SM = 4-8)

Automatic transition to Sleep Mode

occurs in cycles as defined by the SM

(Sleep Mode) Command.

Note: The cyclic sleep time interval must

be shorter than the “Wake-up Initializer

Timer” (set by LH Command).

After the cyclic sleep time

interval elapses.

Note: Module can be

forced into Idle Mode if

PW (Pin Wake-up)

Command is issued.

HT, LH, PW,

SM, ST

1.6 mA

(when sleeping,

SM=4, 1 sec,

@120,000 baud)

For more information about Sleep Modes, refer to the individual commands listed in “Related Commands”

column of the table. SM Command is the best starting point for implementing Sleep Mode configurations.

Refer to the Hardware Sleep entry of the Shutdown Mode section [previous page] to enable the

module’s lowest power-consuming state (1 µA power down current).

XTend™ OEM RF Module – Product Manual v1.0

Command Mode

To set or read module parameters, the module must first enter “Command Mode” (state in which

incoming characters are interpreted as commands). Two command types are available for use:

• AT Commands

• Binary Commands

For modified parameter values to persist in the module registry, changes must be saved to non-

volatile memory using WR (Write) Command. Otherwise, parameters are restored to previously

saved values when the module is powered off and then on again.

AT Commands

To Enter AT Command Mode:

1. Send the 3-character command sequence “+++” and observe guard times before and after

the command characters. [See “Default AT Command Mode Sequence” below.] The

“Terminal” tab (or other serial communications software) of the X-CTU Software can be used

to enter the sequence.

[OR]

2. Assert (low) the pin and turn the power going to the module off and back on (or

pulse the pin).

[If the module is mounted to a MaxStream XTIB-R Interface Board, press the configuration

switch down for 2 seconds.]

Default AT Command Mode Sequence (for transition to Command Mode):

• No characters sent for one second [see BT (Guard Time Before) Command]

• Input three plus characters (“+++”) within one second [see CC (Command Sequence

Character) Command.]

• No characters sent for one second [see AT (Guard Time After) Command.]

To Send AT Commands:

Send AT commands and parameters using the syntax shown below:

Figure 2.8. Syntax for sending AT Commands

NOTE: To read a parameter value stored in a register, leave the parameter field blank.

The preceding example would change the module Destination Address to “1F”. To store the new

value to non-volatile (long term) memory, subsequently send the Write (ATWR) Command before

powering off the module.

System Response. When a command is sent to the module, the module will parse and execute

the command. Upon successful execution of a command, the module returns an “OK” message. If

execution of a command results in an error, the module returns an “ERROR” message.

To Exit AT Command Mode:

1. Send ATCN (Exit Command Mode) Command.

[OR]

2. If no valid AT Commands are received within the time specified by CT (Command Mode

Timeout) Command, the Module automatically returns to Idle Mode.

For an example that illustrates programming the module using AT Commands, refer to the

“Advanced Programming” chapter [p22].

XTend™ OEM RF Module – Product Manual v1.0

Binary Commands

Sending and receiving register values using binary commands is the fastest way to change the

operating parameters of the module. Binary commands are used most often to sample the signal

strength (RS register) and/or error counts or change module address and channels for polling

systems when a quick response is necessary. Since the sending and receiving register values

takes place through the same serial data path as 'live' data (received RF payload), interference

between the two can be a concern.

Common questions about using binary command mode:

• What are the implications of asserting CMD in any of the various states while live data is

being sent or received?

• Specifically, is there a minimum time delay after serial data is sent before which we can

assert CMD and send a command?

• Is a delay required after CMD is de-asserted before we can send normal data?

• How can we know if data being received is the response from a command or live data?

Answers: The CMD line can be asserted to send a command to the radio anytime during

transmission or reception of data. Note that the status of the CMD signal is only checked at the

end of the stop bit as the byte is shifted into the serial port. If the command is sent in the middle

of a stream of payload data to be transmitted, the command will essentially be executed in the

order it is received. If the radio is continuously receiving data, the radio will wait for a break in

the received data before executing the command. The signal will frame the response coming

from the binary command request (see graphic below).

The CMD pin (pin 10) must be asserted in order to send binary commands to an XTend Module.

CMD can be asserted to recognize commands anytime during transmission or reception of data. A

minimum time delay of 100 µs (after the stop bit of the command byte has been sent) must be

observed before pin 10 can be de-asserted. The command executes after all parameters

associated with the command have been sent. If all parameters are not received within 0.5

seconds, the module aborts the command and returns to Idle Mode. Note: When parameters are

sent, they are always two bytes long with the least significant byte sent first.

Commands can be queried for their current value by sending the command logically ORed with

the value 0x80 (hexadecimal) with CMD asserted. When the binary value is sent (with no

parameters), the current value of the command parameter is sent back through the DO pin.

Figure 2.9. Binary Command Write then Read

Signal #4 is CMD (pin 10)

Signal #1 is the DIN (pin 5) signal

to the radio

Signal #2 is the DOUT (pin 6) signal

from the radio

Signal #3 is (pin 9)

A value was written to a register and then read out to verify it. While not in the middle of other

received data, note that the signal outlines the data response out of the module.

IMPORTANT: For the XTend Module to recognize a binary command, RT (GPI1 Configuration)

Command must be issued. If binary programming is not enabled (RT ≠ 1), the

module will not recognize that the CMD pin (Pin 10) is asserted and therefore will

not recognize the data as binary commands.

XTend™ OEM RF Module – Product Manual v1.0

RF Communication Options

The XTend OEM RF Module can be configured to operate in any of three RF communication

modes: Streaming, Acknowledged and Multi-Transmit. The mode is defined by parameters stored

in the transmitting module [see table below]. Receiving modules automatically adapt to the

correct mode on a per-packet basis, based on the contents of each received packet.

Table 2.2. Mode in Relation to Transmitting Module Parameter Values

RF Communication Mode RR Parameter Value MT Parameter Value

Streaming 0 0

Acknowledged >= 1 0

Multi-transmit Ignored >= 1

Addressing Options

In all the RF communication modes, transmission may be addressed to a specific module or

group of modules using the DT (Destination Address) and MK (Address Mask) commands. A

receiving module will only accept a packet if it determines the packet is addressed to it, either as

a global or local packet. The receiving module makes this determination by inspecting the

destination address of the packet and comparing it to its own address and address mask [Figure

2.10]

Figure 2.10. Address Recognition (@ the Receiving Module)

The transmitting module determines whether the packet is intended for a specific node (local

address) or multiple nodes (global address) by comparing the packet’s destination address (DT)

and its own address mask (MK) [Figure 2.11]. It is assumed that the address masks on the

transmitting module and receiving module have been programmed to the same value for proper

operation in each RF Communication Mode.

Figure 2.11. Address Recognition (@ the Transmitting Module)

XTend™ OEM RF Module – Product Manual v1.0

Streaming Mode

Attributes: Highest data throughput

Lowest latency and jitter

Reduced immunity to interference

Streaming mode transmissions never acknowledged by receiving module(s)

Required Parameter Values (TX Module): RR (Retries) = 0

Related Commands: Networking (DT, MK, MY), Serial Interfacing (PK, RB, RO, TT)

Recommended Use: Mode is most appropriate for data that is more sensitive to latency and/or

jitter than it is to occasional packet loss. For example: streaming audio or video.

Streaming Mode Connection Sequence

Figure 2.12. Streaming Mode State Diagram

When streaming data,

RB and RO parameters

are used only on the

first packet. After

transmission begins,

the TX event will

continue uninterrupted

until the DI buffer is

empty or the streaming

limit (TT Command) is

reached. As with the

first packet, the p

of each subseque

packet includes up t

the maximum pack

size (PK Command).

The streaming lim

ayload

it is

ule as

specified by the

transmitting mod

the maximum number of bytes the transmitting module can send in one transmission event. If

the TT parameter is reached, the transmitting module will force a random delay of 1 to RN delay

slots (exactly 1 delay slot if RN=0).

Events through the

“Transmit Packet” process

are common to all RF

communication options.

Refer to the Transmit Mode

section [p11] for more

information.

Subsequent packets are sent without an RF initializer since receiving modules stay synchronized

with the transmitting module for the duration of the transmission event (from preceding packet

information). However, due to interference, some receiving modules may lose data (and

synchronization to the transmitting module), particularly during long transmission events.

Once the transmitting module has sent all pending data or has reached the TT limit, the

transmission event ends. The transmitting module will not transmit again for exactly RN delay

slots if the local (i.e. transmitting module’s) RN parameter is set to a non-zero value. The

receiving module(s) will not transmit for a random number of delay slots between 0 and (RN-1) if

the local (i.e. receiving module’s) RN parameter is set to a non-zero value. These delays are

intended to lessen congestion following long bursts of packets from a single transmitting module,

during which several receiving modules may have become ready to transmit.

XTend™ OEM RF Module – Product Manual v1.0

Acknowledged Mode

Attributes: Reliable delivery through positive acknowledgements for each packet

Throughput, latency and jitter vary depending on the quality of the channel and

the strength of the signal.

Required Parameter Values (TX Module): RR (Retries) >= 1

Related Commands: Networking (DT, MK, RR), Serial Interfacing (PK, RN, RO, RB, TT)

Recommended Use: Use when Reliable Delivery is required between wireless links. If messages

are smaller than 256 bytes, use RB and RO commands to align RF packets to application packets.

Acknowledged Mode Connection Sequence

Figure 2.13. Acknowledged Mode State Diagram

After sending a packet while in

acknowledged mode, the

transmitting module listens for

an acknowledgement. If it

receives the ACK, it will either

move on to sending a

subsequent packet (if more

transmit data is pending), or will

wait for exactly RN random d

slots before allowing anothe

transmission (if no more data is

pending to be transmit

If the transmit

elay

ted).

ting module does

lot.

not receive the ACK within the

allotted time, it will retransmit

the packet with a new RF

initializer following the ACK s

There is no delay between the

first ACK slot and the first

retransmission. Subsequen

retransmissions incur a delay

a random number of delay slots,

between 0 and RN. If RN is set

to 0 on the transmitting module,

there are never any back-off

delays between retransmission

Note that during back-off delays,

the transmitting module will go into Idle Mode and may receive RF data. This can have the effect

of increasing the back-off delay, as the radio cannot return to RF transmit (or retransmit) mode

as long as it is receiving RF data.

Events through the “Transmit

acket” process are common to all

RF communication options. Refer to

the Transmit Mode section [p11]

or more information.

After receiving and acknowledging a packet, the receiving module will move to the next

frequency and listen for either a retransmission or new data, for a specific period of time. Even if

the transmitting module has indicated that it has no more pending transmit data, it may have not

received the previous ACK, and so may retransmit the packet, possibly with no delay after the

ACK slot. In this case, the receiving module will always detect the immediate retransmission,

which will hold off the communications channel and thereby reduce collisions. Receiving modules

acknowledge each retransmission they receive, but they only pass the first copy of a packet they

receive out the UART.

XTend™ OEM RF Module – Product Manual v1.0

RB and RO parameters are not applied to subsequent packets, meaning that once transmission

has begun, it will continue uninterrupted until the DI buffer is empty or the streaming limit (TT)

has been reached. As with the first packet, the payload of each subsequent packet includes up to

the maximum packet size (PK), and the transmitting module checks for more pending data near

the end of each packet.

The streaming limit (TT) specifies the maximum number of bytes that the transmitting module

will send in one transmission event, which may consist of many packets and retries. If the TT

parameter is reached, the transmitting module will force a random delay of 1 to RN delay slots

(exactly 1 delay slot if RN is zero). Each packet is counted only once toward TT, no matter how

many times the packet is retransmitted.

Subsequent packets in acknowledged mode are similar to those in streaming mode, with the

addition of an acknowledgement between each packet, and the possibility of retransmissions.

Subsequent packets are sent without an RF initializer, as the receiving modules are already

synchronized to the transmitting module from the preceding packet(s) and they remain

synchronized for the duration of the transmission event. Each retransmission of a packet includes

an RF initializer.

Once the transmitting module has sent all pending data or has reached the TT limit, the

acknowledged transmission event is completed. The transmitting module will not transmit again

for exactly RN delay slots, if the local RN parameter is set to a nonzero value. The receiving

module will not transmit for a random number of delay slots between 0 and (RN-1), if the local

RN parameter is set to a nonzero value. These delays are intended to lessen congestion following

long bursts of packets from a single transmitting module, during which several receiving modules

may have themselves become ready to transmit.

XTend™ OEM RF Module – Product Manual v1.0

Multi-Transmit Mode

Attributes: Reliable Delivery through forced transmission of every RF packet

Every RF packet is sent exactly (MT + 1) times with no delays between packets

Diminished throughput and increased latency

Required Parameter Values (TX Module): MT (Multi-Transmit) >= 1

Other Related Commands: Networking (DT, MK, MY, RN, TT), Serial Interfacing (BR, PK, RB,

RO), RF Interfacing (FS)

Recommended Use: Use for applications that require Reliable Delivery without using retries and

acknowledgements.

Multi-Transmit Mode Connection Sequence

Figure 2.14. Acknowledged Mode State Diagram

Events through the “Transmit Packet” process

are common to all RF communication options.

Refer to the Transmit Mode section [p11] for

more information.

In Multi-Transmit mode, each packet is retransmitted

MT times, for a total of (MT+1) transmissions. There

is no delay between retransmissions, and the

transmitting module will never receive RF data

between retransmissions. Each retransmission

includes an RF initializer. A transmission event may

include follow-on packets, each of which will be

retransmitted MT times. The Forced Sync (FS)

parameter is ignored in multiple-transmission mode.

The RB and RO parameters are not applied to follow-

on packets, meaning that once transmission has

begun, it will continue uninterrupted until the DI

buffer is empty or the streaming limit (TT) has been

reached. As with the first packet, the payload of each

follow-on packet includes up to the maximum packet

size (PK) bytes, and the transmitting module checks

for more pending data near the end of each packet.

Follow-on packets are not sent until all

retransmissions of the previous packet are finished.

The streaming limit (TT) is specified at the

transmitting module as the maximum number of

bytes that the transmitting module can send in one

transmission event, which may consist of many

packets. If the TT parameter is reached, the

transmitting module will force a random delay of 1 to

RN delay slots (exactly 1 delay slot if RN is zero). In

Multi-Transmit mode, each packet is counted only

once when tracking the streaming limit (TT), no

matter how many times it is retransmitted.

When a receiving module receives a Multi-Transmit

packet, it calculates the amount of time remaining in

the Multi-Transmit event, and inhibits its own

transmissions for the duration of the Multi-Transmit event, plus a random number of delay slots

between 0 and (RN-1). If the local RN parameter is zero, the delay is only for the calculated

duration of the Multi-Transmit event. Thus, a receiving module need only receive one of the

transmissions, and it will keep off the channel until the transmitting module is done. If follow-on

packets are coming, the receiving modules will move to the new frequency and listen for the

follow-on packet for a specific period of time.

XTend™ OEM RF Module – Product Manual v1.0

Advanced Programming

Programming the Module

For information about entering and exiting AT and Binary Command Modes, refer to the

Command Mode section [p15].

AT Command Example

To Send AT Commands (Using the Terminal tab of MaxStream’s X-CTU Software)

Example: Both of the following examples change the module’s destination address to 0x1A0D and

save the new address to non-volatile memory. <CR> stands for “Carriage Return” or “Enter” key.

Method 1 (One line per command)

Send AT Command System Response

+++ OK <CR> (Enter into Command Mode)

ATDT<Enter> 0 <CR> (Read current destination address)

ATDT1A0D< Enter> OK <CR> (Change destination address)

ATWR<Enter> OK <CR> (Write to non-volatile memory)

ATCN<Enter> OK <CR> (Exit Command Mode)

Method 2 (Multiple commands on one line)

Send AT Command System Response

+++ OK <CR> (Enter into Command Mode)

ATDT<Enter> 0 <CR> (Read current destination address)

ATDT1A0D,WR,CN<Enter> OK <CR> (Execute commands)

Note: In order to use a host PC and the X-CTU Software Terminal tab to send data to the module, the

PC com port settings must match module parameter values: baud (serial data rate), parity & stop bits.

Use the “PC Settings” tab to configure PC com port settings to match module parameter values.

[Refer to BD (Baud Rate) and NB (Parity) Commands for module parameter values.]

Binary Command Example

To Send Binary Commands:

Example: Use binary commands to change the XTend Module’s destination address to 0x1A0D

and save the new address to non-volatile memory.

1. RT Command must be set to “1” in AT Command Mode to enable binary programming.

2. Assert CMD (Pin 10 is driven high). (Enter Binary Command Mode)

3. Send Bytes: 00 (Send DT (Destination Address) Command)

0D (Least significant byte of parameter bytes)

1A (Most significant byte of parameter bytes)

08 (Send WR (Write) Command)

4. De-assert CMD (Pin 10 is driven low) (Exit Binary Command Mode)

Note: (pin 9) is high when command is being executed. Hardware flow control must be disabled

as will hold off parameter bytes.

XTend™ OEM RF Module – Product Manual v1.0

Command Descriptions (short)

Table 3.1. XTend Commands (“d” denotes decimal equivalent)

Command

Binary

Command AT Command Name Parameter Range Command

Category

# Bytes

Returned

Factory

Default

%V 0x3B (59d) Board Voltage 0x2CCCA – 0x5BFFA [read-only] Diagnostics 2 -

AM 0x40 (64d) Auto-set MY 0 – 0xFFFF Networking & Security 2 -

AT 0x05 (5d) Guard Time After 2 - (ATST-3) [x 100 msec] Command Mode Options 2 0x0A (10d)

BD 0x15 (21d) Baud Rate (Serial Data Rate) 0 - 8 Serial Interfacing 1 3

BR 0x39 (57d) RF Data Rate 0 - 1 RF Interfacing 1 1

BT 0x04 (4d) Guard Time Before 0 – 0xFFFF [x 100 msec] Command Mode Options 2 0x0A (10d)

CC 0x13 (19d) Command Sequence Character 0x20 - 0x7F Command Mode Options 1 0x2B [“+”] (43d)

CD 0x28 (40d) GPO2 Configuration 0 - 2 Serial Interfacing 1 2

CF - Number Base 0 - 2 Command Mode Options 1 1

CN 0x09 (9d) Exit Command Mode - Command Mode Options - -

CS 0x1F (31d) GPO1 Configuration 0 - 4 Serial Interfacing 1 0

CT 0x06 (6d) Command Mode Timeout 2 – 0xFFFF [x 100 ms] Command Mode Options 2 0xC8 (200d)

DB 0x36 (54d) Received Signal Strength 0x6E to 0x28 [read-only] Diagnostics 1 -

DT 0x00 (0d) Destination Address 0 - 0xFFFF Networking & Security 2 0

E0 0x0A (10d) Echo Off - Command Mode Options - -

E1 0x0B (11d) Echo On - Command Mode Options - -

ER 0x0F (15d) Receive Error Count 0 – 0xFFFF Diagnostics 2 0

FH 0x0D (13d) Force Wake-up Initializer - Sleep (Low Power) - -

FL 0x07 (7d) Software Flow Control 0 - 1 Serial Interfacing 1 0

FS 0x3E (62d) Forced Sync Time 1 – 0xFFFF [x 10 msec] RF Interfacing 2 0

FT 0x24 (36d) Flow Control Threshold 0 – DI Buffer size (bytes) Serial Interfacing 2 varies

GD 0x10 (16d) Receive Good Count 0 – 0xFFFF Diagnostics 2 0

HP 0x11 (17d) Hopping Channel 0 - 9 Networking & Security 1 0

HT 0x03 (3d) Time before Wake-up Initializer 0 – 0xFFFF [x 100 msec] Sleep (Low Power) 2 0xFFFF (65535d)

HV - Hardware Version 0 – 0xFFFF [read-only] Diagnostics 2 0x14FF (5375d)

ID 0x27 (39d) Modem VID 0 - 0x7FFF (user-settable)

0x8000 - 0xFFFF [factory-set] Networking & Security 2 0x3332 (13106d)

KY 0x3C (60d) AES Encryption Key 0 – (Any other 64-digit hex valid key) Networking & Security 2 0

LH 0x0C (12d) Wake-up Initializer Timer 0 – 0xFF [x 100 msec] Sleep (Low Power) 2 1

MK 0x12 (18d) Address Mask 0 - 0xFFFF Networking & Security 2 0xFFFF (65535d)

MT 0x3D (61d) Multi-Transmit 0 – 0xFF Networking & Security 1 0

MY 0x2A (42d) Source Address 0 - 0xFFFF Networking & Security 2 0xFFFF (65535d)

NB 0x23 (35d) Parity 0 - 4 Serial Interfacing 1 0

PK 0x29 (41d) Maximum RF Packet Size 1 – 0x800 [Bytes] RF Interfacing 2 0x800 (2048d)

PL 0x3A (58d) TX Power Level 0 - 4 RF Interfacing 1 4 [1 Watt]

PW 0x1D (29d) Pin Wake-up 0 - 1 Sleep (Low Power) 1 0

RB 0x20 (32d) Packetization Threshold 1 - Current value of PK Serial Interfacing 2 0x800 (2048d)

RC - Ambient Power - Single Channel 0 – 0x31 [dBm, read-only] Diagnostics 1 -

RE 0x0E (14d) Restore Defaults - (Special) - -

RM - Ambient Power - All Channels No parameter – 0x7D0 [read-only] Diagnostics 2 -

RN 0x19 (25d) Delay Slots 0 – 0xFF (slots) Networking & Security 1 0

RO 0x21 (33d) Packetization Timeout 0 – 0xFFFF [x UART character time] Serial Interfacing 2 3

RP 0x22 (34d) RSSI PWM Timer 0 – 0xFF [x 100 msec] Diagnostics 1 0x20 (32d)

RR 0x18 (24d) Retries 0 – 0xFF Networking & Security 1 0x0A (10d)

RT 0x16 (22d) GPI1 Configuration 0 - 2 Serial Interfacing 1 0

SB 0x37 (55d) Stop Bits 0 - 1 Serial Interfacing 1 0

SH 0x25 (37d) Serial Number High 0 – 0xFFFF [read-only] Diagnostics 2 varies

SL 0x26 (38d) Serial Number Low 0 – 0xFFFF [read-only] Diagnostics 2 varies

SM 0x01 (1d) Sleep Mode 0 - 2, 4 - 8; 3 reserved Sleep (Low Power) 1 0

ST 0x02 (2d) Time before Sleep (ATAT+3) – 0x7FFF [x 100 msec] Sleep (Low Power) 2 0x64 (100d)

TP 0x38 (56d) Board Temperature 0 – 0x7F [read-only] Diagnostics 1 -

TR 0x1B (27d) Delivery Failure Count 0 – 0xFFFF [read-only] Diagnostics 2 0

TT 0x1A (26d) Streaming Limit 0 – 0xFFFF [0 = disabled] Networking & Security 2 0

TX 0x3F (63d) Transmit Only 0 - 1 RF Interfacing 1 0

VL - Firmware Version - verbose Returns string Diagnostics - -

VR 0x14 (20d) Firmware Version 0 - 0xFFFF [read-only] Diagnostics 2 -

WA - Active Warning Numbers Returns string Diagnostics - -

WN - Warning Data Returns string Diagnostics - -

WR 0x08 (8d) Write - (Special) - -

WS - Sticky Warning Numbers Returns string Diagnostics - -

* Firmware version in which the command and parameter options were first supported.

XTend™ OEM RF Module – Product Manual v1.0

Command Descriptions (long)

Commands in this section are listed alphabetically. Command categories are designated between

the “< >” symbols that follow each command title. By default, XTend Modules expect numerical

values in hexadecimal since the default value of the CF (Number Base) Parameter is ‘1’.

Hexadecimal values are designated by the “0x” prefix and decimal values by the “d” suffix.

%V (Board Voltage) Command

<Diagnostics> %V Command is used to read the

current voltage of the XTend Module circuit

board.

AT Command: AT%V

Binary Command: 0x3B (59 decimal)

Parameter Range (read-only):

0x2CCCA – 0x5BFFA

(2.80 – 5.75 decimal)

Number of bytes returned: 2

Sample Output: 5.02 V (when ATCF = 0)

5051F (when ATCF = 1) *

5.02 (when ATCF = 2)

* When CF = 1 (default), a hex integer is shown

that is equal to (voltage * 65536d).

AM (Auto-set MY) Command

<Networking & Security> AM Command is used

to automatically set the MY (Source Address)

parameter from the factory-set module serial

number. The address is formed with bits 29, 28

and 13-0 of the serial number (in that order).

The value is displayed as a result of this command.

AT Command: ATAM

Binary Command: 0x40 (64 decimal)

Parameter Range: 0 – 0xFFFF

AT (Guard Time After) Command

<Command Mode Options> AT Command is used

to set/read the time-of-silence that follows the

command sequence character (CC Command). By

default, 1 second must elapse before and after

the command sequence character.

AT Command: ATAT

Binary Command: 0x05 (5 decimal)

Parameter Range: 2 – (ATST-3), up to 0x7FFC

[x 100 milliseconds]

Default Parameter Value: 0x0A (10 decimal)

Number of bytes returned: 2

Related Commands: BT (Guard Time Before),

CC (Command Sequence Character)

The default sequence used to enter AT Command

Mode is as follows:

• No characters sent for 1 second [BT (Guard

Time Before) Command]

• Send three plus characters “+++” [CC

(Command Sequence Character) Command]

• No characters sent for 1 second [AT (Guard Time After) Command]

All of the values in this sequence can be adjusted. AT Command is used to adjust the period of

silence that follows the command sequence character.

XTend™ OEM RF Module – Product Manual v1.0

BD (Baud Rate) Command

AT Command: ATBD

Binary Command: 0x15 (21 decimal)

Parameter Range: 0 – 8

Parameter

Value

BAUD (bps)

Configuration

0 1200

1 2400

2 4800

3 9600

4 19200

5 38400

6 57600

7 115200

8 230400

Default Parameter Value: 3

Number of bytes returned: 1

<Serial Interfacing> BD Command is used to

set/read the UART I/O serial data rate (the rate at

which serial data is sent to the module). Newly

modified serial data rates do not take effect until

the module exits Command Mode [refer to CN

(Exit Command Mode) and CT (Command Mode

Timeout) Commands].

The RF data rate is not affected by the BD

Command.

Note: If the serial data rate is set to exceed the

fixed RF data rate of the XTend module, flow

control may need to be implemented. Refer to the

Pin Signals [p6] and CS (GPO1 Configuration

Command [p27] sections for more information.

BR (RF Data Rate) Command

AT Command: ATBR

Binary Command: 0x39 (57 decimal)

Parameter Range: 0 – 1

Parameter

Value

BAUD (bps)

Configuration

0 10,000

1 120,00

Default Parameter Value: 1

Number of bytes returned: 1

<RF Interfacing> BR Command is used to

set/read the RF data rate (rate that RF data is

transmitted over-the-air) of the module.

BT (Guard Time Before) Command

<Command Mode Options> BT Command is used

to set/read the time-of-silence that precedes the

command sequence character (CC Command) of

the AT Command Mode Sequence.

AT Command: ATBT

Binary Command: 0x04 (4 decimal)

Parameter Range: 0 – 0xFFFF

[x 100 milliseconds]

Default Parameter Value: 0x0A (10 decimal)

Number of bytes returned: 2

Related Commands: AT (Guard Time After),

CC (Command Sequence Character)

The default sequence used to enter AT Command

Mode is as follows:

• No characters sent for 1 second

[BT (Guard Time Before) Command]

• Send three plus characters “+++” [CC

(Command Sequence Character) Command]

• No characters sent for 1 second [AT (Guard Time After) Command]

All values in the sequence can be modified.

XTend™ OEM RF Module – Product Manual v1.0

CC (Command Sequence Character) Command

<Command Mode Options> CC Command is used

to set/read the ASCII character used between

Guard Times of the AT Command Mode Sequence

(BT+ CC + AT). The AT Command Mode

Sequence activates AT Command Mode (from

Idle Mode).

AT Command: ATCC

Binary Command: 0x13 (19 decimal)

Parameter Range: 0x20 – 0x7F

Default Parameter Value: 0x2B (ASCII “+” sign)

Number of bytes returned: 1

Related Commands: AT (Guard Time After), BT

(Guard Time Before)

The default sequence used to enter AT Command

Mode is as follows:

• No characters sent for 1 second [BT (Guard

Time Before) Command]

• Send three plus characters “+++” [CC (Command Sequence Character) Command]

• No characters sent for 1 second [AT (Guard Time After) Command]

All of the values in this sequence can be adjusted.

CD (GPO2 Configuration) Command

AT Command: ATCD

Binary Command: 0x28 (40 decimal)

Parameter Range: 0 – 2

Parameter

Value Configuration

0 RX LED

1 Default high

2 Default low

Default Parameter Value: 2

Number of bytes returned: 1

<Serial Interfacing> CD Command is used to

select/read the behavior of the GPO2 line (pin 3).

CF (Number Base) Command

AT Command: ATCF

Binary Command: 0x1F (31 decimal)

Parameter Range: 0 – 2

Parameter

Value Configuration

Commands utilize default

number base; decimal

commands may output

units

1 All commands are forced to

unsigned, unit-less hex

Commands utilize their

default number base; no

units are output

Default Parameter Value: 1

Number of bytes returned: 1

<Command Mode Options> CF command is used

to set/read command formatting setting.

The following commands are always entered and

read in hex, no matter the CF setting:

VR (Firmware Version), HV (Hardware Version),

KY (AES Encryption Key).

CN (Exit Command Mode) Command

<Command Mode Options> CN Command is used

to explicitly exit AT Command Mode.

AT Command: ATCN

Binary Command: 0x09 (9 decimal)

XTend™ OEM RF Module – Product Manual v1.0

CS (GP01 Configuration) Command

AT Command: ATCS

Binary Command: 0x1F (31 decimal)

Parameter Range: 0 – 4

Parameter

Value Configuration

0 RS-232 flow control

1 RS-485 TX enable low

2 high

3 RS-485 TX enable high

4 low

Default Parameter Value: 0

Number of bytes returned: 1

Related Commands: RT (GPI1 Configuration),

TO (GP01 Timeout)

<Serial Interfacing> CS Command is used to

select the behavior of the GP01 pin (pin 9). This

output can provide RS-232 flow control, control

the TX enable signal (for RS-485 or RS-422

operations), or set the default level for the I/O

line passing function.

By default, GP01 provides RS-232 (Clear-to-

Send) flow control.

DB (Received Signal Strength) Command

<Diagnostics> DB Command is used to read the

receive signal strength (in decibels relative to

milliWatts) of the last received packet. This

parameter is useful in determining range

characteristics of XTend Modules under various

conditions.

In default mode, this command shows the power

level in signed decimal format, with the units

(dBm). If CF is set to 1, the magnitude of the

value is presented in unsigned hex. If CF is set to 2, the value is presented in decimal, but

without the units.

AT Command: ATDB

Binary Command: 0x36 (54 decimal)

Parameter Range (read-only):

0x6E – 0x28

(-110 to -40 Decimal)

Number of bytes returned: 1

Related Command: CN (Exit Command Mode)

Sample Output: -88 dBm (when ATCF = 0)

58 (when ATCF = 1)

-88 (when ATCF = 2)

DT (Destination Address) Command

<Networking & Security> DT Command is used

to set/read the networking address of an XTend

Module. XTend Modules uses three network

layers –Vendor Identification Number (ATID),

Channels (ATHP), and Destination Addresses

(ATDT). DT Command assigns an address to a

module that enables it to communicate only with

other modules having the same addresses. All

modules that share the same Destination Address

can communicate freely with each other.

AT Command: ATDT

Binary Command: 0x00

Parameter Range: 0 – 0xFFFF

Default Parameter Value: 0

Number of bytes returned: 2

Related Commands: HP (Hopping Channel), ID

(Modem VID), MK (Address Mask)

Modules in the same network with a different Destination Address (than that of the transmitter)

will listen to all transmissions to stay synchronized, but will not send any of the data out their

serial ports.

E0 (Echo Off) Command

<Command Mode Options> E0 Command turns

off character echo in AT Command Mode. By

default, echo is off.

AT Command: ATE0

Binary Command: 0x0A (10 decimal)

XTend™ OEM RF Module – Product Manual v1.0

E1 (Echo On) Command

<Command Mode Options> E1 Command turns

on the character echo in AT Command Mode.

Each typed character will be echoed back to the

terminal when ATE1 is active. E0 is the default.

AT Command: ATE1

Binary Command: 0x0B (11 decimal)

ER (Receive Error Count) Command

<Diagnostics> Set/Read the number of receive-

errors. The error count records the number of

packets partially received then aborted on a

reception error. This value returns to 0 after a

reset and is not non-volatile (Value does not

persist in the module’s memory after a power-up

sequence). Once the Receive Error Count reaches

its maximum value (up to 0xFFFF), it remains at

its maximum count value until the maximum

count value is explicitly changed or the module is reset.

AT Command: ATER

Binary Command: 0x0F (15 decimal)

Parameter Range: 0 – 0xFFFF

Default Parameter Value: 0

Number of bytes returned: 2

Related Commands: GD (Receive Good Count)

The ER parameter is not reset by pin, serial port or cyclic sleep modes.

FH (Force Wake-up Initializer) Command

<Sleep (Low Power)> FH Command is used to

force a Wake-up Initializer to be sent on the next

transmission. WR (Write) Command does not

need to be issued with FH Command.

AT Command: ATFH

Binary Command: 0x0D (13 decimal)

Use only with cyclic sleep modes active on remote modules.

FL (Software Flow Control) Command

AT Command: ATFL

Binary Command: 0x07 (7 decimal)

Parameter Range: 0 – 1

Parameter

Value Configuration

0 Disable software

flow control

1 Enable software

flow control

Default Parameter Value: 0

Number of bytes returned: 1

<Serial Interfacing> FL Command is used to

configure software flow control. Hardware flow

control is implemented with the XTend Module as

the GP01 pin (pin 9, ), which regulates when

serial data can be transferred to the module.

FL Command can be used to allow software flow

control to also be enabled. XON character used is

0x11 (17 decimal). XOFF character used is 0x13

(19 decimal).

FS (Forced Synch Time) Command

<RF Interfacing> FS Command only applies to

streaming data. Normally, only the first packet of

a continuous stream has the full RF initializer.

The modules then remain synchronized for

subsequent packets of the stream. This

parameter can be used to periodically force an RF

initializer during such streaming. Any break in

UART character reception long enough to drain

the DI Buffer (UART receive buffer) and cause a pause in RF data transmission will also cause an

RF initializer to be inserted on the next transmission.

AT Command: ATFS

Binary Command: 0x3E (62 decimal)

Parameter Range: 0 – 0xFFFF

[x 10 milliseconds]

Default Parameter Value: 0

Number of bytes returned: 2

XTend™ OEM RF Module – Product Manual v1.0

FT (Flow Control Threshold) Command

<Serial Interfacing> Set/Read the flow control

threshold. When FT bytes are in the received in

the DI buffer, or XOFF software flow control

is asserted.

AT Command: ATFT

Binary Command: 0x24 (36 decimal)

Parameter Range: 0 – (Receive buffer size

minus 0x11 bytes)

Default Parameter Value: DO Buffer size minus

0x11 (decimal 17)

Number of bytes returned: 2

GD (Receive Good Count) Command

<Diagnostics> Set/Read the count of good

received RF packets. Parameter value is reset to

0 after every reset and is not non-volatile (Value

does not persist in the module’s memory after a

power-up sequence). Once the “Receive Good

Count” reaches its maximum value (up to

0xFFFF), it remains at its maximum count value

until the maximum count value is manually

changed or the module is reset.

AT Command: ATGD

Binary Command: 0x10 (16 decimal)

Parameter Range: 0 – 0xFFFF

Default Parameter Value: 0

Number of bytes returned: 2

Related Commands: ER (Receive Error Count)

The GD parameter is not reset by pin, serial port or cyclic sleep modes.

HP (Hopping Channel) Command

<Networking & Security> HP Command is used

to set/read the module’s hopping channel

number. A channel is one of three layers of

addressing available to the XTend Module.

AT Command: ATHP

Binary Command: 0x11 (17 decimal)

Parameter Range: 0 – 9

Default Parameter Value: 0

Number of bytes returned: 1

Related Commands: ID (Modem VID), DT

(Destination Address), MK (Address Mask)

In order for modules to communicate with each

other, the modules must have the same channel

number since each channel uses a different

hopping sequence. Different channels can be

used to prevent modules in one network from

listening to transmissions of another.

HT (Time before Wake-up Initializer) Command

<Sleep (Low Power)> Set/read time of inactivity

(no serial or RF data is sent or received) before a

wake-up initializer is sent by a TX module. HT

should be set shorter than inactivity timeout [ST

Command] time of any RX modules operating in

Cyclic Sleep (SM=4-8). The wake-up initializer

sent by the TX module instructs all RX modules to

remain awake to receive RF data.

From the RX module perspective: After HT time

elapses and the inactivity timeout [ST Command]

is met, the RX module goes into cyclic sleep. In

cyclic sleep, the RX module wakes once per sleep

interval [SM Command] to check for a wake-up initializer. When a wake-up initializer is detected,

the module stays awake to receive data. The wake-up initializer must be longer than the cyclic

sleep interval to ensure that sleeping modules detect incoming data.

AT Command: ATHT

Binary Command: 0x03 (3 decimal)

Parameter Range: 0 – 0xFFFF

[x 100 milliseconds]

Default Parameter Value: 0xFFFF (wake-up

initializer will not be sent)

Number of bytes returned: 2

Related Commands: LH (Wake-up Initializer

Timer), SM (Sleep Mode), ST (Time before

Sleep)

When HT time elapses, the TX module knows it needs to send a wake-up Initializer for all RX

modules to remain awake and receive the next transmission.

XTend™ OEM RF Module – Product Manual v1.0

HV (Hardware Version) Command

<Diagnostics> HV Command is used to read the

hardware version of the module.

AT Command: ATHV

Parameter Range (read-only): 0 – 0xFFFF

Default Parameter Value: 0x14FF (5375d)

Number of bytes returned: 2

ID (Modem VID) Command

<Networking & Security> ID Command is used to

set/read the VID (Vendor Identification Number)

of the module. Modules must have matching VIDs

in order to communicate.

AT Command: ATID

Binary Command: 0x27 (39 decimal)

Parameter Range:

0 – 0x7FFF (user-settable)

0x8000 – 0xFFFF (factory-set)

Default Parameter Value: 0x3332 (13106d)

Number of bytes returned: 2

KY (AES Encryption Key) Command

<Networking & Security> KY Command is used to

set the 256-bit AES (Advanced Encryption

Standard) key for encryption/decryption of data.

Once set, the key cannot be read out of the

module by any means. The entire payload of the

packet is encrypted using the key and the CRC is

computed across the ciphertext. When encryption

is turned on, each packet carries an additional 16

bytes to convey the random CBC Initialization

Vector (IV) to the receiver(s).

AT Command: ATKY

Binary Command: 0x3C (60 decimal)

Parameter Range:

0 – (any other 64-digit hex valid key)

Default Parameter Value: 0 (disabled)

Number of bytes returned: 2

Number Base: Always Hexadecimal

A module with the wrong key (or no key) will still receive encrypted data, but the resultant data

driven out the serial port will be meaningless. Likewise, a module with a key will still receive

unencrypted data sent from a module without a key, but the output will be meaningless.

Because CBC mode is utilized, repetitive data appears different in different transmissions due to

the randomly-generated IV.

LH (Wake-up Initializer Timer) Command

<Sleep (Low Power)> LH Command is used to

set/read the duration of time for which the wake-

up initializer is sent. When receiving modules are

put into Cyclic Sleep Mode, they power-down

after a period of inactivity [specified by ST (Time

before Sleep) Command] and will periodically

awaken and listen for transmitted data. In order

for the receiving modules to remain awake, they

must detect ~35ms of the wake-up initializer.

LH Command must be used whenever a receiver

is operating in Cyclic Sleep Mode. This lengthens

the Wake-up Initializer to a specific amount of time (in tenths of a second). The Wake-up

Initializer Time must be longer than the cyclic sleep time that is determined by SM (Sleep Mode)

Command. If the wake-up initializer time were less than the Cyclic Sleep interval, the connection

would be at risk of missing the wake-up initializer transmission.

AT Command: ATLH

Binary Command: 0x0C (12 decimal)

Parameter Range: 0 – 0xFF

[x 100 milliseconds]

Default Parameter Value: 1

Number of bytes returned: 1

Related Commands: HT (Time before Wake-up

Initializer), SM (Sleep Mode), ST (Time before

Sleep)

Refer to Figures 3.1 & 3.2 of the SM Command description to view diagrams of correct and

incorrect configurations. The images help visualize the importance that the value of LH be greater

than the value of SM.

XTend™ OEM RF Module – Product Manual v1.0

MK (Address Mask) Command

<Networking & Security> MK Command is used

to set/read the “Address Mask”. All data packets

contain the Destination Address of the

transmitting module.

When an RF data packet is received, the

transmitter’s Destination Address is logically

“ANDed” (bitwise) with the Address Mask of the

receiver. The resulting value must match the

Destination Address or the Address Mask of the

receiver for the packet to be received and sent

out the module’s DO serial port. If the “ANDed”

value does not match either the Destination

Address or the Address Mask of the receiver, the

packet is discarded. (All “0” values are treated as “irrelevant” values and are ignored.)

AT Command: ATMK

Binary Command: 0x12 (18 decimal)

Parameter Range: 0 – 0xFFFF

Default Parameter Value: 0xFFFF (65535d)

Destination address (DT parameter) of the

transmitting module must exactly match the

destination address of the receiving module.

Number of bytes returned: 2

Related Commands: DT (Destination Address),

HP (Hopping Channel), ID (Modem VID), MY

(Source Address)

MT (Multi-Transmit) Command

<Networking & Security> MT packets do not

request an acknowledgement from the receiving

module(s). MT takes precedence over RR, so if

both MT and RR are non-zero, then MT+1

packets will be sent, with no ACK requests.

When a receiving module receives a packet with

remaining forced retransmissions, it calculates

the length of the packet and inhibits transmission

for the amount of time required for all

retransmissions. Thereafter, a random number of

delay slots are inserted between 0 and RN before

transmission is allowed from the receiving module(s). This prevents all listening modules from

transmitting at once upon conclusion of a multiple transmission event, as long as RN is non-zero.

AT Command: ATMT

Binary Command: 0x3D (61 decimal)

Parameter Range: 0 – 0xFF

Default Parameter Value: 0 (no forced

retransmissions)

Number of bytes returned: 1

Related Commands: Networking (DT, MK, MY,

RN, TT), Serial Interfacing (BR, PK, RB, RO), RF

Interfacing (FS)

Comment: Actual number of forced transmissions is the parameter value plus one. For example,

if MT=1, two transmissions of each packet will be sent.

MY (Source Address) Command

<Networking & Security> Set/Read the source

address of the module.

AT Command: ATMY

Binary Command: 0x2A (42 decimal)

Parameter Range: 0 – 0xFFFF

Default Parameter Value: 0xFFFF (Disabled –

DT (Destination Address) parameter serves as

both source and destination address.)

Number of bytes returned: 2

Related Commands: DT (Destination Address),

HP (Hopping Channel), ID (Modem VID), MK

(Address Mask)

XTend™ OEM RF Module – Product Manual v1.0

NB (Parity) Command

AT Command: ATNB

Binary Command: 0x23 (35 decimal)

Parameter Range: 0 – 4

Parameter

Value Configuration

0 8-bit (no parity or

7-bit (any parity)

1 8-bit even

2 8-bit odd

3 8-bit mark

4 8-bit space

Default Parameter Value: 0

Number of bytes returned: 1

<Serial Interfacing> Select/Read parity settings

for UART communications.

PK (Maximum RF Packet Size) Command

<RF Interfacing> PK Command is used to

set/read the maximum size of RF packets. The

maximum packet size can be used along with

RB/RO to implicitly set the channel dwell time.

If PK is set above 256 and BR is subsequently

changed to 0, then PK will automatically be

lowered to 256 and a warning will be raised (see

BR (RD Data Rate) and WN (Warning Data)

Commands for details).

Changes to this parameter may have a secondary

effect on the RB (Packet Control Characters)

Parameter. RB must always be less than or equal to PK. If PK is changed to a value less than the

current value of RB, RB is automatically lowered to be equal to PK.

AT Command: ATPK

Binary Command: 0x29 (41 decimal)

Parameter Range: 0 – 0x800 [Bytes]

Default Parameter Value: 0x800*

(2048 decimal)

Number of bytes returned: 2

Related Commands: BR (RF Data Rate) RB

(Packetization Threshold), RO (Packetization

Timeout), WN (Warning Data)

* When BR = 0, the maximum PK value is 0x100 (256d). When BR = 1, the maximum PK value

is 0x800 (2048d).

PL (Power Level) Command

AT Command: ATPL

Binary Command: 0x3A (58 decimal)

Parameter Range: 0 – 4

Parameter

Value Configuration

0 1 mW

1 10 mW

2 100 mW

3 500 mW

4 1000 mW (1 Watt)

Default Parameter Value: 4

Number of bytes returned: 1

<RF Interfacing> PL Command is used to

set/read the power level at which the module

transmits.

XTend™ OEM RF Module – Product Manual v1.0

PW (Pin Wake-up) Command

<Sleep (Low Power)> Under normal operation, a

module in Cyclic Sleep Mode cycles from an

active state to a low-power state at regular

intervals until data is ready to be received. If the

PW Parameter is set to 1, the SLEEP Pin (pin 8)

can be used to awaken the module from Cyclic

Sleep. If the SLEEP Pin is de-asserted (low), the

module will be fully operational and will not go

into Cyclic Sleep.

Once SLEEP is asserted, the module will remain

active for the period of time specified by ST

(Time before Sleep) Command, and will return to

Cyclic Sleep Mode (if no data is ready to be transmitted). PW Command is only valid if Cyclic

Sleep has been enabled.

AT Command: ATPW

Binary Command: 0x1D (29 decimal)

Parameter Range: 0 – 1

Parameter

Value Configuration

0 Disabled

1 Enabled

Default Parameter Value: 0

Number of bytes returned: 1

Related Commands: SM (Sleep Mode), ST (Time

before Sleep)

RB (Packetization Threshold) Command

<Serial Interfacing> RF transmission will

commence when data is in the DI Buffer and

either of the following criteria are met:

• RO character times of silence on the UART

receive lines (ignored if RO = 0)

• RB characters have been received by the

UART (ignored if RB = 0)

If PK is lowered below the value of RB, RB is

automatically lowered to match PK.

Note: RB and RO criteria only apply to the first

packet of a multi-packet transmission. If data remains in the DI Buffer after the first packet,

transmissions will continue in streaming manner until there is no data left in the DI Buffer (UART

receive buffer).

AT Command: ATRB

Binary Command: 0x20 (32 decimal)

Parameter Range: 0 – Current value of PK

Parameter (up to 0x800 Bytes)

Default Parameter Value: 0x800

Number of bytes returned: 2

Related Commands: BR (RF Data Rate), PK (RF

Packet Size), RO (Packetization Timeout)

RC (Ambient Power – Single Channel) Command

<Diagnostics> RC Command is used to examine

and report the power level on a given channel.

AT Command: ATRC

Parameter Range (read-only): 0 – 0x31 [dBm]

Number of bytes returned: 1

Related Commands: RM (Ambient Power – All

channels)

Sample output: -78 dBm [when CF = 0]

4e [when CF = 1]

-78 [when CF = 2]

RE (Restore Defaults) Command

<Diagnostics> RE Command is used to restore all

configurable parameters to factory default

settings. However, RE Command will not write

the default values to non-volatile (persistent) memory. Unless the WR (Write) Command is issued

after the RE command, the restored default settings will not be saved in the event of module

reset or power-down.

AT Command: ATRE

Binary Command: 0x0E (14 decimal)

XTend™ OEM RF Module – Product Manual v1.0

RM (Ambient Power – All Channels) Command

<Diagnostics> RM Command is used to examine

and report the power levels on all channels. If no

parameter is given, then the channels will be

scanned once. If a parameter is given, the

channels will be repeatedly scanned for that

number of seconds (up to 2000d), and the

maximum power level seen for each channel is

reported (i.e. peak hold).

AT Command: ATRM

Parameter Range (read-only): no parameter –

0x7D0 (2000d)

Number of bytes returned: 2

Related Commands: RC (Ambient Power –

Single channel)

A graphical spectrum analyzer application can be implemented by repeatedly calling ATRM with

no arguments and reading the resultant 50 power levels (easiest to do when CF = 1 or 2).

Sample output [when CF = 0]: Ch 0: -100 dBm

Ch 1: -103 dBm

...

Ch 49: -99 dBm

Sample output [when CF = 1]: 64

...

Sample output [when CF = 2]: -100

-103

…

-99

RN (Delay Slots) Command

<Networking & Security> RN Command is used

to set/read the time delay that the transmitting

module inserts before attempting to resend a

packet. If the transmitting module fails to receive

an acknowledgement after sending a packet, it

inserts a random number of delay slots (ranging

from 0 to (RN minus 1)) before attempting to

resend the packet. Each delay slot lasts for a

period of 38 ms.

If two modules attempt to transmit at the same

time, the random time delay after packet failure allows only one module to transmit the packet

successfully; while the other module waits until the channel available for RF transmission.

AT Command: ATRN

Binary Command: 0x19 (25 decimal)

Parameter Range: 0 – 0xFF [38 ms slots]

Default Parameter Value: 0 (no delay slots

inserted)

Number of bytes returned: 1

Related Commands: RR (Retries), TT

(Streaming Limit)

RN Command is only applicable if retries have been enabled [RR (Retries) Command] or if forced

delays will be inserted into a transmission [TT (Streaming Limit) Command].

RO (Packetization Timeout) Command

<Serial Interfacing> RO Command is used to

set/read the Packetization Timeout setting. RF

transmission commences when data is in the DI

buffer and either of the following criteria are met:

• RO character times of silence on the UART

receive lines (ignored if RO = 0)

• RB characters have been received by the

UART (ignored if (RB = 0)

RB and RO criteria only apply to the first packet

of a multi-packet transmission. If data remains in

the DI Buffer (UART receive) after the first packet, transmissions will continue in streaming

manner until there is no data left in the DI Buffer (UART receive).

AT Command: ATRO

Binary Command: 0x21 (33 decimal)

Parameter Range: 0 – 0xFFFF

[ x UART character times ]

Default Parameter Value: 0x03 (3 decimal)

Number of bytes returned: 2

Related Commands: RB (Packetization

Threshold)

XTend™ OEM RF Module – Product Manual v1.0

RO Command (continued)

When RO is the transmission-beginning criteria: The actual time between the reception of the last

character from the UART and the beginning of RF transmission will be at least 800 µsec longer

than the actual RO time to allow for transmission setup. Additionally, it is subject to 100 - 200

µsec of additional uncertainty, which could be significant for small values of RO at high UART bit

rates.

The RO timer calculates the correct UART character time (10, 11, or 12 bits) based on the

following criteria:

• 1 start bit

• 8 data bits

• 0 or 1 parity bit (as set by ATNB)

• 1 or 2 stop bits (as set by ATSB)

RP (RSSI PWM Timer) Command

RP Command is used to enable a PWM (“Pulse

Width Modulation”) output on Pin 11

(Config/RSSI). The pin is calibrated to show the

difference between received signal strength and

the sensitivity level of the module. PWM pulses

vary from zero to 95 percent. Zero percent

means the received RF signal is at or below the

published sensitivity level of the module. The

following table shows dB levels above sensitivity and PWM values:

AT Command: ATRP

Binary Command: 0x22 (34 decimal)

Parameter Range: 0 - 0xFF

[x 100 milliseconds]

Default Parameter Value: 0x20 (32 decimal)

Number of bytes returned: 1

The total time period of the PWM output is 8.32 ms. PWM output consists of 40 steps and

therefore the minimum step size is 0.208 ms.

dBm above Sensitivity PWM percentage

(high period / total period)

10 47.5

20 62.5

30 77.5

A non-zero value defines the time that PWM output is active with the RSSI value of the last

received RF packet. After the set time when no RF packets are received, PWM output is set low (0

percent PWM) until another RF packet is received. PWM output is also set low at power-up. A

parameter value of 0xFF permanently enables PWM output and always reflects the value of the

last received RF packet.

Pin 11 is shared between PWM output and Config input. When the module is powered, the Config

pin is an input. During the power-up sequence, if RP parameter is a non-zero value, the Config

pin is configured as an output and set low until the first RF packet is received. With a non-zero RP

parameter, the Config pin is an input for RP ms after power up.

RR (Retries) Command

<Networking & Security> RR Command is used

to set/read the number of retries that can be sent

for a given RF packet. When RR Command is

enabled (non-zero value) and when MT Command

equals zero, RF packet acknowledgements and

retries are enabled.

After transmitting a packet, the transmitting

module waits to receive an acknowledgement from a receiving module. If the acknowledgement

is not received in the period of time specified by RN (Delay Slots) Command, the original packet

is transmitted again. The RF packet is transmitted repeatedly until an acknowledgement is

received or until the packet is sent RR times.

AT Command: ATRR

Binary Command: 0x18 (24 decimal)

Parameter Range: 0 – 0xFF

Default Parameter Value: 0x0A (10 decimal)

Number of bytes returned: 1

XTend™ OEM RF Module – Product Manual v1.0

RT (GPI1 Configuration) Command

AT Command: ATRT

Binary Command: 0x16 (22 decimal)

Parameter Range: 0 – 2

Parameter

Value Configuration

0 disabled

1 Enable Binary Programming

2 Enable Flow Control

Default Parameter Value: 0

Number of bytes returned: 1

RT Command is used to set/read the behavior of

the GPI1 pin (pin 10). The pin can be configured

to enable binary programming or flow

control.

SB (Stop Bits) Command

AT Command: ATSB

Binary Command: 0x37 (55 decimal)

Parameter Range: 0 – 1

Parameter

Value Configuration

0 1 stop bit

1 2 stop bits

Default Parameter Value: 0

Number of bytes returned: 1

<Serial Interfacing> SB Command is used to

set/read the number of stop bits in the data

packets.

SH (Serial Number High) Command

<Diagnostics> SH Command is used to set/read

the serial number high word of the module.

AT Command: ATSH

Binary Command: 0x25 (37 decimal)

Parameter Range (read-only): 0 – 0xFFFF

Number of bytes returned: 2

Related Commands: SL (Serial Number Low)

SL (Serial Number Low) Command

<Diagnostics> SL Command is used to set/read

the serial number low word of the module.

AT Command: ATSH

Binary Command: 0x26 (38 decimal)

Parameter Range (read-only): 0 – 0xFFFF

Number of bytes returned: 2

Related Commands: SH (Serial Number High)

XTend™ OEM RF Module – Product Manual v1.0

SM (Sleep Mode) Command

AT Command: ATSM

Binary Command: 0x01

Parameter Range: 0 – 8

Parameter

Value Configuration

0 Disabled

1 Pin Sleep

2 Serial Port Sleep

3 reserved

Cyclic 1.0 second sleep

(Module wakes every 1.0

second)

5 Cyclic 2.0 second sleep

6 Cyclic 4.0 second sleep

7 Cyclic 8.0 second sleep

8 Cyclic 16.0 second sleep

Default Parameter Value: 0

Number of bytes returned: 1

Related Commands:

Pin Sleep – PC (Power-up Mode), PW (Pin

Wake-up)

Serial Port Sleep – ST (Time before Sleep)

Cyclic Sleep – ST (Time before Sleep), LH

(Wake-up Initializer Timer), HT (Time Before

Wake-up Initializer), PW (Pin Wake-up)

<Sleep Mode (Low Power)> SM Command is

used to set/read the module’s Sleep Mode

settings that configure the module to run in

states that require minimal power consumption.

Pin Sleep (SM = 1)

Next to Shutdown Mode, Pin Sleep requires the

least amount of power. In order to achieve this

state, SLEEP (pin 8) must be asserted (high). The

module remains in Pin Sleep until the SLEEP pin

is de-asserted.

After enabling Pin Sleep (SM=1), GPI2 controls

whether the XTend Module is active or in Sleep

Mode. When GPI2 is de-asserted (low), the

module is fully operational. When GPI2 is

asserted (high), the module transitions to Sleep

Mode and remains in its lowest power-consuming

state until the Sleep pin is de-asserted. GPI2 is

only active if the module is setup to operate in

this mode; otherwise the pin is ignored.

Once in Pin Sleep Mode, GP01 (pin 9, ) is de-

asserted (high), indicating that data should not

be sent to the module. PWR (pin 4) is also de-

asserted (low) when the module is in Pin Sleep

Mode.

Serial Port Sleep (SM = 2)

Serial Port Sleep is a Sleep Mode in which the XTend Module runs in a low power state until serial

data is detected on the DI pin.

When Serial Port Sleep is enabled, the module goes into Sleep Mode after a user-defined period

of inactivity (no transmitting or receiving of data). This period of time is determined by ST (Time

before Sleep) Command. Once a character is received through the DI pin, the module returns to

Idle Mode and is fully operational.

Cyclic Sleep (SM = 4-8)

Cyclic Sleep is the Sleep Mode in which the XTend Module enters into a low-power state and

awakens periodically to determine if any transmissions are being sent. Cyclic sleep settings wake

the module after the amount of time designated by the associated SM parameter values. If the

module detects a wake-up initializer during the time it is awake, the module synchronizes with

the transmitting module and starts receiving data after the wake-up initializer runs its duration.

Otherwise, the module returns to Sleep Mode and continues to cycle in and out of activity until a

wake-up initializer is detected. If a Cyclic Sleep setting is chosen, the ST, LH and HT parameters

must also be set as described in the “Sleep Mode” section of this manual.

When Cyclic Sleep settings are enabled, the XTend Module goes into Sleep Mode after a user-

defined period of inactivity (no transmission or reception on the RF channel). The user-defined

period is determined by ST (Time before Sleep) Command.

While the module is in Cyclic Sleep Mode, GP01 (pin 9, ) is de-asserted (high) to indicate that

data should not be sent to the module during this time. When the module awakens to listen for

data, GP01 is asserted and any data received on the DI Pin is transmitted. PWR (pin 4) is also de-

asserted (low) when the module is in Cyclic Sleep Mode.

XTend™ OEM RF Module – Product Manual v1.0

SM Command (continued)

The module remains in Sleep Mode for a user-defined period of time ranging from 0.5 seconds to

16 seconds (SM Parameters 3 through 8). After this interval of time, the module returns to Idle

Mode and listens for a valid data packet for 100 ms. If the module does not detect valid data (on

any frequency), the module returns to Sleep Mode. If valid data is detected, the module

transitions into Receive Mode and receives incoming RF packets. The module then returns to

Sleep Mode after a Period of inactivity that is determined by ST “Time before Sleep” Command.

The module can also be configured to wake from cyclic sleep when GPI2 (pin 8, SLEEP) is de-

asserted (low). To configure a module to operate in this manner, PW (Pin Wake-up) Command

must be issued. Once GPI2 is de-asserted, the module is forced into Idle Mode and can begin

transmitting or receiving data. It remains active until no data is detected for the period of time

specified by the ST Command, at which point it resumes its low-power cyclic state.

Note: The cyclic interval time defined by SM (Sleep Mode) Command must be shorter than the interval

time defined by LH (Wake-up Initializer Timer).

For example: If SM=4 (Cyclic 1.0 second sleep), the LH Parameter should equal 0xB (“1.1” seconds).

With these parameters set, there is no risk of the receiving module being asleep for the duration of

wake-up initializer transmission. “Cyclic Scanning” explains in further detail the relationship between

“Cyclic Sleep” and “Wake-up Initializer Timer”

Cyclic Scanning. Each RF transmission consists of an RF Initializer and payload. The wake-up

initializer contains initialization information and all receiving modules must wake during the

wake-up initializer portion of data transmission in order to be synchronized with the transmitting

module and receive the data.

Figure 3.1. Correct Configuration (LH > SM):

Length of the wake-up initializer exceeds the time interval of Cyclic Sleep. The receiver is guaranteed to detect

the wake-up initializer and receive the accompanying payload data.

Figure 3.2. Incorrect Configuration (LH < SM):

Length of wake-up initializer is shorter than the time interval of Cyclic Sleep. This configuration is vulnerable

to the receiver waking and missing the wake-up initializer (and therefore also the accompanying payload data).

XTend™ OEM RF Module – Product Manual v1.0

ST (Time before Sleep) Command

<Sleep Mode (Low Power)> ST Command is used

to set/read the period of time (milliseconds) in

which the module remains inactive before

entering Sleep Mode.

AT Command: ATST

Binary Command: 0x02 (2 decimal)

Parameter Range: (ATAT+3) – 0x7FFF

[x 100 milliseconds]

Default Parameter Value: 0x64 (100 decimal)

Number of bytes returned: 2

Related Commands: SM (Sleep Mode), LH

(Wake-up Initializer Timer), HT (Time before

Wake-up Initializer)

For example, if the ST Parameter is set to 0x64

(100 decimal), the module will enter into Sleep

mode after 10 seconds of inactivity (no

transmitting or receiving).

This command can only be used if Cyclic Sleep or

Serial Port Sleep Mode settings have been

selected using SM (Sleep Mode) Command.

TP (Board Temperature) Command

<Diagnostics> TP Command is used to read the

current temperature of the board.

AT Command: ATTP

Binary Command: 0x38 (56 decimal)

Parameter Range (read-only): 0– 0x7F

Number of bytes returned: 1

Related Commands: WN (Warning Data)

Sample Output: 26 C [when ATCF = 0]

1A [when ATCF = 1]

26 [when ATCF = 2]

TR (Transmit Error Count) Command

<Diagnostics> TR Command is used to report the

number of retransmit failures. This number is

incremented each time a packet is not

acknowledged within the number of retransmits

specified by RR (Retries) Command. It therefore

counts the number of packets that were not

successfully received and were subsequently

dropped.

AT Command: ATTR

Binary Command: 0x1B (27 decimal)

Parameter Range: 0 – 0xFFFF

Default Parameter Value: 0

Number of bytes returned: 2

Related Commands: RR (Retries)

TR Parameter is not non-volatile and will therefore be reset to zero when the module is reset.

TT (Streaming Limit) Command

<Networking & Security> TT Command is used to

set/read the limit on the number of bytes that

can be sent out before a random delay is issued.

AT Command: ATTT

Binary Command: 0x1A (26 decimal)

Parameter Range: 0 – 0xFFFF

Default Parameter Value: 0 (disabled)

Number of bytes returned: 2

Related Commands: RN (Delay Slots)

If a module is sending a continuous stream of RF

data, a delay is inserted which stops its

transmission and allows other modules time to

transmit (once it sends TT bytes of data).

Inserted random delay lasts between 1 & ‘RN +

1’ delay slots, where each delay slot lasts 38 ms.

TT command can be used to simulate full-duplex behavior.

TX (Transmit Only) Command

AT Command: ATTX

Binary Command: 0x3F (63 decimal)

Parameter Range: 0 – 1

Parameter

Value Configuration

0 TX and RX

1 TX only

Default Parameter Value: 0

Number of bytes returned: 1

<RF Interfacing> TX Command is used to

set/read the transmit/receive behaviors of the

module. Setting a module to TX-only may reduce

latency because the transmitting module will

never be "stuck" receiving data from other

modules.

XTend™ OEM RF Module – Product Manual v1.0

VL (Firmware Version - verbose) Command

<Diagnostics> VL Command is used to read the

verbose firmware version of the XTend Module.

AT Command: ATVL

Parameter Range: Returns string

Number of bytes returned: 2

Sample output: Firmware version 0.8, Apr 16

2004 10:46:57

VR (Firmware Version) Command

<Diagnostics> VR Command is used to read the

firmware version of the XTend Module.

AT Command: ATVR

Binary Command: 0x14 (20 decimal)

Parameter Range (read-only): 0 – 0xFFFF

Number of bytes returned: 2

WA (Active Warning Numbers) Command

<Diagnostics> WA Command reports the warning

numbers of all active warnings - one warning

number per line. No further information is shown

and warning counts are not reset.

AT Command: ATWA

Parameter Range: Returns string – one

warning number per line.

Sample Output (indicates warnings 1 and 3 are currently active): 1

WN (Active Warning Numbers) Command

<Diagnostics> WN Command is used to report

detailed data for all active and sticky warnings.

• Warning number & description

• Number of occurrences since the last WN or WS command

• Whether the warning is currently active

Warnings which are not currently active, and have not been active since the last WN or WS

command, are not displayed. WN Command also resets all non-zero warning counts, except for

warnings that are presently active, which are set to 1.

Sample output: Warning 1: Under-voltage

3 occurrences; presently active

Warning 4: Over-temperature

5 occurrences; presently inactive.

AT Command: ATWN

Parameter Range: Returns string

Warning Number Description

1 Under-voltage. This is caused if the supply voltage falls below the minimum threshold for the lowest power level (2.8 V). If/when the voltage

rises above the threshold, the warning is deactivated. The module will not transmit below this voltage threshold.

2 Over-voltage. This is caused if the supply voltage exceeds 5.75 V. Transmission is not allowed while this warning is active.

3 Under-temperature. This is caused if the temperature sensed by the module is less than -40 C. The module does not artificially limit operation

while this warning is active, but module functionality is not guaranteed.

4 Over-temperature. This is caused if the temperature sensed by the module is greater than 105 C. The module does not allow transmission

nor reception while this warning is active. The warning is deactivated when the temperature falls to 100 C.

5 Power reduced. This is caused if the transmit power has to be reduced from the level programmed by PL Command due to insufficient supply

voltage. The 1 W power level requires 4.75 V or higher; 500 mW requires 3.0 V or higher; 100 mW, 10 mW and 1 mW require 2.8 V or higher.

6 Default calibration data in flash. This is caused if the module-specific power calibration data is either not present or is invalid, or if none of the

parameters have been modified from their default values. Power levels may be incorrect.

Default configuration parameters in flash. This is caused if the user-modifiable parameters (i.e. those stored by a 'WR' command) in flash are

all the compiled-in default values. This is caused if the user configuration is found to be not present or invalid at power-up and there is no user

custom configuration, or if no user-modifiable parameters have been modified from the compiled-in defaults. Note that modification of one or

more parameters without the subsequent ATWR to commit the changes to flash will not deactivate this warning, since it reflects the status of

the parameters in flash. Note as well that this warning does not reflect usage of the custom configuration defaults, only usage of the compiled-

in defaults.

Default factory configuration parameters in flash. This is caused if the factory parameters (i.e. those stored by a 'WP' command) in flash are

all the default values. This is caused if the factory configuration is found to be not present or invalid at power-up, or if no factory parameters

have been modified. Note that modification of one or more parameters without the subsequent ATWP to commit the changes to flash will not

deactivate this warning, since it reflects the status of the parameters in flash.

XTend™ OEM RF Module – Product Manual v1.0

WR (Write) Command

<(Special)> WR Command writes configurable

parameters to the module’s non-volatile memory

(Parameter values remain in the modem’s

memory until overwritten by future use of WR Command).

AT Command: ATWR

Binary Command: 0x08

If changes are made without writing them to non-volatile memory, the module reverts back to

previously saved parameters the next time the module is powered-on.

WS (Sticky Warning Numbers) Command

<Diagnostics> WS Command reports the warning

numbers of all warnings which have been active

since the last use of WS or WN command,

including any warnings which are currently

active. No further information is shown.

AT Command: ATWS

Parameter Range (read-only): 1 – 8

Number of bytes returned: 1

This command also resets all non-zero warning counts, except for warnings that are presently

active, which are set to 1.

XTend™ OEM RF Module – Product Manual v1.0

Appendix A:

Agency Certifications

FCC Certification

The XTend OEM RF Module complies with Part 15 of the FCC rules and regulations. Compliance

with labeling requirements, FCC notices and antenna regulations is required.

Labeling Requirements

In order to inherit MaxStream’s FCC Certification, compliance requires the following be stated on

the device and within its operation manual:

FCC ID: Pending

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two

conditions: (1) this device may not cause harmful interference and (2) this device must accept

any interference received, including interference that may cause undesired operation.

Label Warning

WARNING The Original Equipment Manufacturer (OEM) must ensure that FCC labeling

requirements are met. This includes a clearly visible label on the outside of the

final product enclosure that displays the contents shown in the figure below.

Figure A.1. Required FCC Label for OEM products containing the 9XTend (900 MHz) OEM RF Module

Contains FCC ID: Pending

The enclosed device complies with Part 15 of the FCC Rules. Operation is subject to the following

two conditions: (1) this device may not cause harmful interference and (2) this device must accept

any interference received, including interference that may cause undesired operation.

XTend™ OEM RF Module – Product Manual v1.0

FCC Notices

Adherence to the following is required:

IMPORTANT: The XTend OEM RF Modules have been certified by the FCC for use with other products

without any further certification (as per FCC section 2.1091). Changes or modifications not expressly

approved by MaxStream could void the user’s authority to operate the equipment.

IMPORTANT: OEMs must test their final product to comply with unintentional radiators (FCC section

15.107 and 15.109) before declaring compliance of their final product to Part 15 of the FCC Rules.

IMPORTANT: The XTend OEM RF Modules have been certified for fixed base station and mobile

applications. If modules will be used for portable applications, the device must undergo SAR testing.

NOTE:

This equipment has been tested and found to comply with the limits for a Class B digital device,

pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection

against harmful interference in a residential installation. This equipment generates, uses and can

radiate radio frequency energy and, if not installed and used in accordance with the instructions,

may cause harmful interference to radio communications. However, there is no guarantee that

interference will not occur in a particular installation. If this equipment does cause harmful

interference to radio or television reception, which can be determined by turning the equipment

off and on, the user is encouraged to try to correct the interference by one or more of the

following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiving module.

• Connect the equipment into an outlet on a circuit different from that to which the receiving

module is connected.

• Consult the dealer or an experienced radio/TV technician for help.

Antenna Warning

WARNING: This device has been tested with Reverse Polarity SMA connectors with the

antennas listed in Tables A.1 – A.7 of Appendix A. When integrated into OEM

products, fixed antennas require installation preventing end-users from replacing

them with non-approved antennas. Antennas not listed in the tables must be

tested to comply with FCC Section 15.203 (unique antenna connectors) and Section

15.247 (emissions).

XTend™ OEM RF Module – Product Manual v1.0

FCC-Approved Antennas (900 MHz)

Fixed Base Station and Mobile Applications

MaxStream Modules are pre-FCC approved for use in fixed base station and mobile applications.

When the antenna is mounted at least 20 cm (8”) from nearby persons, the application is

considered a mobile application.

Portable Applications and SAR Testing

When the antenna is mounted closer than 20 cm to nearby persons, then the application is

considered “portable” and requires an additional test be performed on the final product. This test

is called the Specific Absorption Rate (SAR) testing and measures the emissions from the module

and how they affect the person.

RF Exposure

(This statement must be included as a CAUTION statement in OEM product manuals.)

WARNING: This equipment is approved only for mobile and base station transmitting devices.

Antenna(s) used for this transmitter must be installed to provide a separation

distance of at least 30 cm from all persons and must not be co-located or

operating in conjunction with any other antenna or transmitter.

NOTE: The separation distance indicated in the above is 30 cm, but any distance greater than or

equal to 23 cm can be used (per MPE evaluation).

To fulfill FCC Certification requirements:

1. Integrator must ensure required text [Figure A.1] is clearly placed on the outside of the final

product.

2. XTend Module may be used only with Approved Antennas that have been tested with this

module. [Refer to Tables A.1 – A.7]

1 Watt Transmit Power Output or Lower

Table A.1. Half-wave antennas (approved when operating at 1 Watt power output or lower.)

Part Number Type Connector Gain Application

A09-HSM-7 Straight half-wave RPSMA 3.0 dBi Fixed / Mobile

A09-HASM-675 Articulated half-wave RPSMA 2.1 dBi Fixed / Mobile

A09-HABMM-P6I Articulated half-wave w/ 6” pigtail MMCX 2.1 dBi Fixed / Mobile

A09-HABMM-6-P6I Articulated half-wave w/ 6” pigtail MMCX 2.1 dBi Fixed / Mobile

A09-HBMM-P6I Straight half-wave w/ 6” pigtail MMCX 2.1 dBi Fixed / Mobile

A09-HRSM Right angle half-wave RPSMA 2.1 dBi Fixed

A09-HASM-7 Articulated half-wave RPSMA 2.1 dBi Fixed

A09-HG Glass mounted half-wave RPSMA 2.1 dBi Fixed

A09-HATM Articulated half-wave RPTNC 2.1 dBi Fixed

A09-H Half-wave dipole RPSMA 2.1 dBi Fixed

Table A.2. Yagi antennas (approved when operating at 1 Watt power output or lower.)

Part Number Type Connector Gain Required Antenna Cable Loss Application

A09-Y6 2 Element Yagi RPN 6.1 dBi - 0.1 dB* Fixed / Mobile

A09-Y7 3 Element Yagi RPN 7.1 dBi - 1.1 dB* Fixed / Mobile

A09-Y8 4 Element Yagi RPN 8.1 dBi - 2.1 dB* Fixed / Mobile

A09-Y6TM 2 Element Yagi RPTNC 6.1 dBi - 0.1 dB* Fixed / Mobile

A09-Y7TM 3 Element Yagi RPTNC 7.1 dBi - 1.1 dB* Fixed / Mobile

A09-Y8TM 4 Element Yagi RPTNC 8.1 dBi - 2.1 dB* Fixed / Mobile

* FCC regulations stipulate a 36 dBm EIRP power requirement. Users implementing antenna gain greater than 6.0 dB must compensate for the

added gain with cable loss. When operating at 1 W power output, the sum (in dB) of cable loss and antenna gain shall not exceed 6.0 dB.

XTend™ OEM RF Module – Product Manual v1.0

Table A.3. Omni-directional base station antennas (approved when operating at 1 Watt power output or lower.)

Part Number Type Connector Gain Required Antenna Cable Loss Application

A09-F0 Fiberglass Base Station RPN 0 dBi - Fixed

A09-F1 Fiberglass Base Station RPN 1.0 dBi - Fixed

A09-F2 Fiberglass Base Station RPN 2.1 dBi - Fixed

A09-F3 Fiberglass Base Station RPN 3.1 dBi - Fixed

A09-F4 Fiberglass Base Station RPN 4.1 dBi - Fixed

A09-F5 Fiberglass Base Station RPN 5.1 dBi - Fixed

A09-F6 Fiberglass Base Station RPN 6.1 dBi - 0.1 dB* Fixed

A09-F7 Fiberglass Base Station RPN 7.1 dBi - 1.1 dB* Fixed

A09-F8 Fiberglass Base Station RPN 8.1 dBi - 2.1 dB* Fixed

A09-W7 Wire Base Station RPN 7.1 dBi - 1.1 dB* Fixed

A09-F0 Fiberglass Base Station RPSMA 0 dBi - Fixed

A09-F1 Fiberglass Base Station RPSMA 1.0 dBi - Fixed

A09-F2 Fiberglass Base Station RPSMA 2.1 dBi - Fixed

A09-F3 Fiberglass Base Station RPSMA 3.1 dBi - Fixed

A09-F4 Fiberglass Base Station RPSMA 4.1 dBi - Fixed

A09-F5 Fiberglass Base Station RPSMA 5.1 dBi - Fixed

A09-F6 Fiberglass Base Station RPSMA 6.1 dBi - 0.1 dB* Fixed

A09-F7 Fiberglass Base Station RPSMA 7.1 dBi - 1.1 dB* Fixed

A09-F8 Fiberglass Base Station RPSMA 8.1 dBi - 2.1 dB* Fixed

A09-W7SM Wire Base Station RPSMA 7.1 dBi - 1.1 dB* Fixed

A09-F0TM Fiberglass Base Station RPTNC 0 dBi - Fixed

A09-F1TM Fiberglass Base Station RPTNC 1.0 dBi - Fixed

A09-F2TM Fiberglass Base Station RPTNC 2.1 dBi - Fixed

A09-F3TM Fiberglass Base Station RPTNC 3.1 dBi - Fixed

A09-F4TM Fiberglass Base Station RPTNC 4.1 dBi - Fixed

A09-F5TM Fiberglass Base Station RPTNC 5.1 dBi - Fixed

A09-F6TM Fiberglass Base Station RPTNC 6.1 dBi - 0.1 dB* Fixed

A09-F7TM Fiberglass Base Station RPTNC 7.1 dBi - 1.1 dB* Fixed

A09-F8TM Fiberglass Base Station RPTNC 8.1 dBi - 2.1 dB* Fixed

A09-W7TM Wire Base Station RPTNC 7.1 dBi - 1.1 dB* Fixed

Table A.4. Mag Mount antennas (approved when operating at 1 Watt power output or lower.)

Part Number Type Connector Gain Required Antenna Cable Loss Application

A09-M0SM Mag Mount RPSMA 0 dBi - Fixed

A09-M2SM Mag Mount RPSMA 2.1 dBi - Fixed

A09-M3SM Mag Mount RPSMA 3.1 dBi - Fixed

A09-M5SM Mag Mount RPSMA 5.1 dBi - Fixed

A09-M7SM Mag Mount RPSMA 7.1 dBi -1.1 dB* Fixed

A09-M8SM Mag Mount RPSMA 8.1 dBi -2.1 dB* Fixed

A09-M0TM Mag Mount RPTNC 0 dBi - Fixed

A09-M2TM Mag Mount RPTNC 2.1 dBi - Fixed

A09-M3TM Mag Mount RPTNC 3.1 dBi - Fixed

A09-M5TM Mag Mount RPTNC 5.1 dBi - Fixed

A09-M7TM Mag Mount RPTNC 7.1 dBi -1.1 dB* Fixed

A09-M8TM Mag Mount RPTNC 8.1 dBi -2.1 dB* Fixed

Table A.5. Multi-path antennas (approved when operating at 1 Watt power output or lower.)

Part Number Type Connector Gain Application

A09-DPSM-P12F omni directional permanent mount w/ 12ft pigtail RPSMA 3.0 dBi Fixed

A09-D3NF-P12F omni directional magnetic mount w/ 12ft pigtail RPN 3.0 dBi Fixed

A09-D3SM-P12F omni directional w/ 12ft pigtail RPSMA 3.0 dBi Fixed

A09-D3PNF omni directional permanent mount RPN 3.0 dBi Fixed

A09-D3TM-P12F omni directional w/ 12ft pigtail RPTNC 3.0 dBi Fixed

A09-D3PTM omni directional permanent mount RPTNC 3.0 dBi Fixed

A92-D4PNF 900 MHz / 2.4GHz permanent mount RPN 2.1 dBi Fixed

A92-D4P 900 MHz / 2.4GHz permanent mount RPSMA 2.1 dBi Fixed

A92-D4PTM 900 MHz / 2.4GHz permanent mount RPTNC 2.1 dBi Fixed

* FCC regulations stipulate a 36 dBm EIRP power requirement. Users implementing antenna gain greater than 6.0 dB must compensate for the

added gain with cable loss. When operating at 1 W power output, the sum (in dB) of cable loss and antenna gain shall not exceed 6.0 dB.

XTend™ OEM RF Module – Product Manual v1.0

100 milliWatt Transmit Power Output or Lower

Table A.6. Monopole antennas (approved when operating at 100 mW power output or lower.)

Part Number Type Connector Gain Application

A09-QW Quarter-wave wire Permanent 1.9 dBi Fixed / Mobile

A09-QRAMM 3 “ Quarter-wave wire MMCX 2.1 dBi Fixed / Mobile

A09-QSM-3 Quarter-wave straight RPSMA 1.9 dBi Fixed / Mobile

A09-QSM-3H Heavy duty quarter-wave straight RPSMA 1.9 dBi Fixed / Mobile

A09-QBMM-P6I Quarter-wave w/ 6” pigtail MMCX 1.9 dBi Fixed / Mobile

A09-QHRN Miniature Helical Right Angle solder Permanent -1 dBi Fixed / Mobile

A09-QHSN Miniature Helical Right Angle solder Permanent -1 dBi Fixed / Mobile

A09-QHSM-2 2” Straight RPSMA 1.9 dBi Fixed / Mobile

A09-QHRSM-2 2" Right angle RPSMA 1.9 dBi Fixed / Mobile

A09-QHRSM-170 1.7" Right angle RPSMA 1.9 dBi Fixed / Mobile

A09-QRSM-380 3.8" Right angle RPSMA 1.9 dBi Fixed / Mobile

A09-QAPM-520 5.2” Articulated Screw mount Permanent 1.9 dBi Fixed / Mobile

A09-QSPM-3 3” Straight screw mount Permanent 1.9 dBi Fixed / Mobile

A09-QAPM-3 3” Articulated screw mount Permanent 1.9 dBi Fixed / Mobile

A09-QAPM-3H 3” Articulated screw mount Permanent 1.9 dBi Fixed / Mobile

Table A.7. Yagi antennas (approved when operating at 100 mW power output or lower.)

Part Number Type Connector Gain Application

A09-Y6 2 Element Yagi RPN 6.1 dBi Fixed / Mobile

A09-Y7 3 Element Yagi RPN 7.1 dBi Fixed / Mobile

A09-Y8 4 Element Yagi RPN 8.1 dBi Fixed / Mobile

A09-Y9 4 Element Yagi RPN 9.1 dBi Fixed / Mobile

A09-Y10 5 Element Yagi RPN 10.1 dBi Fixed / Mobile

A09-Y11 6 Element Yagi RPN 11.1 dBi Fixed / Mobile

A09-Y12 7 Element Yagi RPN 12.1 dBi Fixed / Mobile

A09-Y13 9 Element Yagi RPN 13.1 dBi Fixed / Mobile

A09-Y14 10 Element Yagi RPN 14.1 dBi Fixed / Mobile

A09-Y14 12 Element Yagi RPN 14.1 dBi Fixed / Mobile

A09-Y15 13 Element Yagi RPN 15.1 dBi Fixed / Mobile

A09-Y15 15 Element Yagi RPN 15.1 dBi Fixed / Mobile

A09-Y6TM 2 Element Yagi RPTNC 6.1 dBi Fixed / Mobile

A09-Y7TM 3 Element Yagi RPTNC 7.1 dBi Fixed / Mobile

A09-Y8TM 4 Element Yagi RPTNC 8.1 dBi Fixed / Mobile

A09-Y9TM 4 Element Yagi RPTNC 9.1 dBi Fixed / Mobile

A09-Y10TM 5 Element Yagi RPTNC 10.1 dBi Fixed / Mobile

A09-Y11TM 6 Element Yagi RPTNC 11.1 dBi Fixed / Mobile

A09-Y12TM 7 Element Yagi RPTNC 12.1 dBi Fixed / Mobile

A09-Y13TM 9 Element Yagi RPTNC 13.1 dBi Fixed / Mobile

A09-Y14TM 10 Element Yagi RPTNC 14.1 dBi Fixed / Mobile

A09-Y14TM 12 Element Yagi RPTNC 14.1 dBi Fixed / Mobile

A09-Y15TM 13 Element Yagi RPTNC 15.1 dBi Fixed / Mobile

A09-Y15TM 15 Element Yagi RPTNC 15.1 dBi Fixed / Mobile

IC (Industry Canada) Certification

Labeling requirements for Industry Canada are similar to those of the FCC. A clearly visible label

on the outside of the final product enclosure must display the following text:

Contains Model 9XTend Radio, IC: Pending

Integrator is responsible for its product to comply with IC ICES-003 & FCC Part 15, Sub. B -

Unintentional Radiators. ICES-003 is the same as FCC Part 15 Sub. B and Industry Canada

accepts FCC test report or CISPR 22 test report for compliance with ICES-003.

XTend™ OEM RF Module – Product Manual v1.0

Appendix B:

Development Guide

XTend Development Kit Contents

The XTend Development Kit includes the hardware and software needed to create long range

wireless links.

Table B.1. XTend Development Kit Contents

Item Qty. Description Part Number

Quick Start Guide 1 Familiarizes users with some of the module’s most important functions. MD0016

CD 1 Contains documentation, software and tools needed for RF operation. MD0010

XTend OEM RF Module 1 Long Range 900 MHz OEM RF Module w/ RPSMA Connector XT09-SI

XTend OEM RF Module 1 Long Range 900 MHz OEM RF Module w/ attached antenna XT09-MI

MaxStream Interface Board 2 Enables communication to RS-232/485/422 devices XTIB-R

Antenna 1 900 MHz RPSMA, 6" Half-Wave, dipole, articulating A09-HASM-675

Serial Loopback Adapter 1

Connects to the female RS-232 (DB-9) serial connector of the

MaxStream Interface Board and can be used to configure the module to

function as a repeater (for range testing)

JD2D3-CDL-A

NULL Modem Adapter

(male-to-male) 1

Connects to the female RS-232 (DB-9) serial connector of the

MaxStream Interface Board and can be used to connect the module to

another DCE (female DB9) device

JD2D2-CDN-A

NULL Modem Adapter

(female-to-female) 1 Used to bypass radios to verify serial cabling is functioning properly JD3D3-CDN-A

Male DB-9 to

RJ-45 Adapter 1 Facilitates adapting the DB-9 Connector of the MaxStream Interface

Board to a CAT5 cable (male DB9 to female RJ45) JE1D2-CDA-A

Female DB-9 to

RJ-45 Adapter 1 Facilitates adapting the DB-9 Connector of the MaxStream Interface

Board to a CAT5 cable (female DB9 to female RJ45) JE1D3-CDA-A

Power Adapter 2 Allows Interface Board to be powered by a 110 Volt AC power supply JP4P2-9V10-6F

RS-232 Cable (6’) 2 Connects interface board to devices having an RS-232 serial port JD2D3-CDS-6F

Interfacing Hardware

MaxStream has developed proprietary interface boards that facilitate the connection between

XTend OEM RF Modules and serial devices. MaxStream has developed an interface board that

supports the RS-232/485/422 protocols (MaxStream part number: XTIB-R).

The following section illustrates properties of the MaxStream XTIB-R Interface Board. The

MaxStream Interface board provides means for connecting the XTend Module to any node that

has an available RS-232 or RS-485/422 connector. Since the module requires signals to enter at

TTL voltages, one of the main functions of the interface board is to convert signals between TTL

levels (5 VDC) and RS-232 levels.

In the following sections, the XTend Module mounted to the XTIB-R interface board will be referred to

as a “Module Assembly”

XTend™ OEM RF Module – Product Manual v1.0

MaxStream XTIB-R RS-232/485 Interface Board

B.1a. Config (Configuration) Switch

Figure B.1. Front View The Configuration Switch provides an alternate method for

entering into Command Mode. To enter Command Mode at

the modem’s default RF data rate, hold the Configuration

Switch down for two seconds.

B.1b. I/O LEDs

The I/O LED indicators visualize diagnostic status information. The

LEDs indicate module activity as follows:

Yellow (top LED) = Serial Data Out (to host)

Green (middle) = Serial Data In (from host)

Red (bottom) = Power/TX Indicator (Red light is on when

powered; it pulses on/off briefly during RF transmission.)

B.1d.

RSSI LEDs

B.1e. Power

Connector

B.1c. DB-9

Serial Port

B.1b.

I/O LEDs

B.1a.

Config

Switch

B.1c. DB-9 Serial Port

Standard female DB-9 (RS-232) DCE connector – This connector

can be also used for RS-485 and RS-422 connections.

B.1b. RSSI LEDs

RSSI LEDs indicate the amount of fade margin present in an active

wireless link. Fade margin is the difference between the incoming

signal strength and the module’s receiver sensitivity.

3 LEDs on = Very Strong Signal (> 30 dB fade margin)

2 LEDs on = Strong Signal (> 20 dB fade margin)

1 LED on = Moderate Signal (> 10 dB fade margin)

0 LED on = Weak Signal (< 10 dB fade margin)

B.1e. Power Connector

7-28 VDC Power Connector (Center positive, 5.5/2.1mm)

Note: The XTIB-R interface board can accept voltages as low as 5V.

Contact MaxStream support to enable this option.

B.2a. DIP Switch

Figure B.2. Back View

DIP Switch automatically configures the XTend Module to operate

in different modes during the power-on sequence. Each time the

module assembly (interface board + XTend Module) is powered-

on, intelligence on the XTIB-R interface board programs the

attached module according to the positions of the DIP Switch.

B.1a. DIP Switch Refer to the figure below for DIP Switch settings.

Figure B.3. MaxStream XTIB-R (RS-232/485) Interface Board DIP Switch Settings

Table B.2. [next page]

summaries configurations

triggered by the DIP Switch.

XTend™ OEM RF Module – Product Manual v1.0

Automatic DIP Switch Configurations

Each time the module assembly (XTend Module mounted to an XTIB-R Interface Board) is

powered-on, intelligence on the MaxStream Interface Board (located inside the Module Assembly)

sends AT Commands that program the Module based on positions of the DIP Switch. Automatic

configurations that take place during the power-on sequence affect Module parameter values as

shown below.

Figure B.4. XTIB-R DIP Switch

Table B.2. Power-up Options - Commands sent to the module as result of DIP Switch Settings

(SW = DIP Switch)

Switches Condition Behavior Commands Sent During Power-up

If SW1 & SW2

are ON (up) Restore Defaults ATRE (Restore Defaults)

ATWR (Write defaults to non-volatile memory)

If SW1 is ON (up) RS-232 Operation ATCS 0 (CTS function for CTS line)

Switches 1 & 2

(Restore Defaults /

Serial Interfacing)

If SW1 is OFF (down) RS-485 or

RS-422 Operation ATCS 3 (RS-485 or RS-422 Operation)

If SW5 & SW6 are

OFF (down) Multipoint Base

ATMY 0 (Source Address)

ATDT 0xFFFF (Destination Address)

ATMT 3 (Multi-Transmit option)

If SW5 is OFF (down) &

SW6 is ON (up) Multipoint Remote

ATAM (Auto-set MY, MY = unique)

ATDT 0 (Destination Address)

ATMT 0 (Multi-Transmit option)

ATRR 0x0A (Retries)

If SW5 is ON (up) &

SW6 is OFF (down) Point-to-Point

ATAM (Auto-set MY, MY = unique)

ATDT 0xFFFF (Destination Address)

ATMT 3 (Multi-Transmit option)

Switches 5 & 6

(TX/RX Modes)

If SW5 is ON (up) &

SW6 is ON (up) Processor is disabled and AT Commands are not sent to the Module

IMPORTANT: To avoid overwriting previously stored custom configurations (due to the automatic

configurations that take place each time the module assembly is powered-on), it is necessary to

disable a processor located on the XTIB-R interface board. To disable the processor, keep switches 5

& 6 ON (up) as indicated in the table.

XTend™ OEM RF Module – Product Manual v1.0

Adapters

The XTend Development Kit comes with several adapters that support the following functions:

• Performing Range Tests

• Testing Cables

• Connecting to other RS-232 DCE and DTE devices

• Connecting to terminal blocks or RJ-45 (for RS-485/422 devices)

NULL Modem Adapter (male-to-male)

Part Number: JD2D2-CDN-A (Black, DB-9 M-M) The male-to-male NULL modem adapter is used

to connect two DCE devices. A DCE device connects with a straight-through cable to the male

serial port of a computer (DTE).

Figure B.5. Male NULL modem adapter and pinouts

Figure B.6. Example of a MaxStream Radio Modem (DCE Device) connecting to another DCE device)

NULL Modem Adapter (female-to-female)

Part Number: JD3D3-CDN-A (Gray, DB-9 F-F) The female-to-female NULL modem adapter is

used to verify serial cabling is functioning properly. To test cables, insert the female-to-female

NULL modem adapter in place of a pair of module assemblies (XTIB-R-R interface board + XTend

Module) and test the connection without radio modules in the connection.

Figure B.7. Female NULL modem adapter and pinouts

Serial Loopback Adapter

Part Number: JD2D3-CDL-A (Red, DB-9 M-F) The serial loopback adapter is used for range

testing. During a range test, the serial loopback adapter configures the module to function as a

repeater by looping serial data back into the radio for retransmission.

Figure B.8. Serial loopback adapter and pinouts

For use in RS-485/422 systems:

DB-9 to RJ-45 adapters are

documented on p58.

XTend™ OEM RF Module – Product Manual v1.0

Antennas

[Refer to Appendix A for a list of FCC-Approved Antennas]

Factors that determine wireless link range:

• Ambient RF noise (interference)

• Line-of-sight obstructions

• Transmit power

• Receive sensitivity

• Antenna configuration

XTend Antenna Connector Options

To comply with the FCC rules and obtain a “modular” certification, it is required that XTend

Modules utilize a “non standard” connector. This is to ensure the modules are used only with

approved antennas. The XTend Modules have two connector options:

• RPSMA

• MMCX

Alternatively, the XTend Module can be order with an attached wire antenna.

RPSMA

The Reverse Polarity SMA (RPSMA) connector uses the same body as a

regular SMA connector. In order to be a “non standard” connector, the

gender of the center conductor is changed. The female RPSMA actually

has a male center conductor.

MMCX

The Micro-Miniature Connector (MMCX) is a good solution for

high volume, price-sensitive applications. The small size and

snap on connection make it suitable for attaching an external

mounted antenna to a module inside an enclosure.

Antenna Cables

RF cables are typically used to connect a radio installed in a cabinet to an antenna mounted

externally. As a general rule, it is best to keep the RF cable as short as possible. All cables

promote signal loss which is usually measured in dB loss per 100 ft. MaxStream provides LMR-

195 rated cables. Common cables and dB losses are included in this table:

Table B.3. Potential Signal Strength Loss due to Antenna Cable Length

Cable Type Loss at 900 MHz per 100’

(loss per 100m)

Loss at 2.4 GHz per 100’

(loss per 100m) Diameter

RG-58 14.5 dB (47.4 dB) 25.3 dB (83.2 dB) 0.20” (4.95 mm)

RG-174 25.9 dB (85.0 dB) 44.4 dB (145.8 dB) 0.10” (2.54 mm)

RG-316 24.7 dB (81.0 dB) 42.4 dB (139.0 dB) 0.10” (2.59 mm)

LMR-195 11.1 dB (36.5 dB) 19.0 dB (62.4 dB) 0.20” (4.95 mm)

LMR-240 7.6 dB (24.8 dB) 12.9 dB (42.4 dB) 0.24“ (6.10 mm)

LMR-600 2.5 dB (8.2 dB) 4.4 dB (14.5 dB) 0.59” (15.0 mm)

XTend™ OEM RF Module – Product Manual v1.0

Interfacing Protocols

The XTend Module Assembly (XTend OEM RF Module mounted to the XTIB-R Interface Board)

supports the following interfacing protocols:

• RS-232

• RS-485 (2-wire) Half-Duplex

• RS-485 (4-wire) and RS-422

RS-232 Operation

DIP Switch Settings and Serial Port Connections

Figure B.8. Figure B.9.

RS-232 DIP Switch Settings Pins used on the female RS-232 (DB-9)

Serial Connector

DIP Switch settings are read and applied

only while powering-on.

Table B.4. RS-232 Signals and their implementations on the XTend Module Assembly

(Low-asserted signals are distinguished by horizontal line over pin name.)

DB-9

RS-232

Name

X-CTU

Name* Description Implementation

1 DCD GPO2 Data-Carrier-Detect Connected to DSR (pin6)

2 RXD DO Received Data Serial data exiting the Module (to host)

3 TXD DI Transmitted Data Serial data entering into the Module (from host)

4 DTR GPI2 Data-Terminal-Ready Can enable POWER-DOWN on the Module

5 GND - Ground Signal Ground

6 DSR GPO2 Data-Set-Ready Connected to DCD (pin1)

7 / CMD GPI1 Request-to-Send Provides flow control or

enables “Command Mode” on the Module

8 GP01 Clear-to-Send Provides flow control

9 DI - Ring Indicator

Optional power input that is connected internally to the

positive lead of the front power connector

* X-CTU is software that can be used to configure the Module. The software includes a naming convention

where “DI” stands for Data Input and “DO” for Data Output.

XTend™ OEM RF Module – Product Manual v1.0

Wiring Diagram: RS-232 DTE Device to a DCE Module Assembly

Figure B.10. RS-232 DTE (male connector) device wired to an XTend Module Assembly (female connector)

Wiring Diagram: DCE Module Assembly to an RS-232 DCE Device

Figure B.11 XTend Module Assembly (female connector) wired to an RS-232 DTE (male connector) device

Sample Wireless Connection: DTE Ù DCE DCE Ù DCE

Figure B.12 Typical wireless connection used for serial communications between DTE and DCE devices

XTend™ OEM RF Module – Product Manual v1.0

RS-485 (2-wire) Operation

DIP Switch Settings and Serial Port Connections

Figure B.13. Figure B.14.

RS-485 (2-wire) Half-Duplex Pins used on the female RS-232 (DB-9)

DIP Switch Settings Serial Connector

Figure B.15

RS-485 (2-wire) with Termination (optional)

Termination is the 120 Ω resistor between T+ and T-.

DIP Switch settings are read and applied only while powering-on.

Note: Refer to Figures 18 and 19 [page 11] for RJ-45 connector pin designations used in

RS-485/422 environments.

Table B.5. RS-485 (2-wire half-duplex) Signals and their implementations on the XTend Module

Assembly

DB-9 Pin RS-485 Name Description Implementation

2 T/R- (TRA) Negative Data Line Transmit serial data to and from the

XTend Module Assembly

5 GND Ground Signal Ground

8 T/R+ (TRB) Positive Data Line Transmit serial data to and from the

XTend Module Assembly

9 PWR Power Optional power input that is connected internally

to the front power connector

1, 3, 4, 6, 7 not used

Wiring Diagram: RS-485 (2-wire) Half-Duplex

Figure B.16. XTend Module Assembly in an RS-485 (2-wire) half-duplex environment

XTend™ OEM RF Module – Product Manual v1.0

RS-485 (4-wire) & RS-422 Operation

DIP Switch Settings and Serial Port Connections

Figure B.17 Figure B.18

RS-485 (4-wire) and RS-422 Pins used on the female RS-232 (DB-9)

DIP Switch Settings Serial Connector

Figure B.19

RS-485 (4-wire) & RS-422 with Termination (optional)

Termination is the 120 Ω resistor between T+ and T-.

DIP Switch settings are read and applied only while powering-on.

Table B.6. RS-485/422 (4-wire) Signals and their implementations with the XTend-PKG-R Module

Assembly

DB-9 Pin RS-485/422

Name Description Implementation

2 T- (TA)

Transmit Negative

Data Line Serial data sent from the XTend Module Assembly

3 R- (RA)

Receive Negative

Data Line Serial data received by the XTend Module Assembly

5 GND Signal Ground Ground

7 R+ (RB)

Receive Positive

Data Line Serial data received by the XTend Module Assembly

8 T+ (TB)

Transmit Positive

Data Line Serial data sent from the XTend Module Assembly

9 PWR Power Optional power input that is connected internally

to the front power connector

1, 4, 6 not used

Wiring Diagram: RS-485 (4-wire) Half-Duplex

Figure B.20. XTend Module Assembly in an RS-485 (4-wire) environment

XTend™ OEM RF Module – Product Manual v1.0

Wiring Diagram: RS-422

Figure B.21. XTend Module Assembly in an RS-485 (4-wire) environment

RS-485/422 Connection Guidelines

The RS-485/422 protocol provides a solution for wired communications that can tolerate high

noise and push signals over long cable lengths. RS-485/422 signals can communicate as far as

4000 feet (1200 m). RS-232 signals are suitable for cable distances up to 100 feet (30.5 m).

RS-485 offers multi-drop capability in which up to 32 nodes can be connected. The RS-422

protocol is used for point-to-point communications.

Suggestions for integrating the XTend Modem with the RS-485/422 protocol:

1. When using Ethernet twisted pair cabling: Select wires so that T+ and T- are connected to

each wire in a twisted pair. Likewise, select wires so that R+ and R- are connected to a

twisted pair. (For example, tie the green and white/green wires to T+ and T-.)

2. For straight-through Ethernet cable (not cross-over cable) – The following wiring pattern

works well: Pin3 to T+, Pin4 to R+, Pin5 to R-, Pin6 to T-

3. Note that the connecting cable only requires 4 wires (even though there are 8 wires).

4. When using phone cabling (RJ-11) – Pin2 in the cable maps to Pin3 on opposite end of cable

and Pin1 maps to Pin4 respectively.

Figure B.22 Male (yellow) DB-9 to RJ-45 Adapters

Figure B.23. Female (green) DB-9 to RJ-45 Adapters

XTend™ OEM RF Module – Product Manual v1.0

X-CTU Software

Using the X-CTU Software

X-CTU is MaxStream-provided software used to interface with and configure XTend OEM RF

Modules. The software application is organized into the following four tabs:

• PC Settings tab - Setup PC serial ports to interface with an XTend Module assembly

• Range Test tab – Test XTend Module's range and monitor packets sent and received

• Terminal tab – Set and read XTend Module parameters using AT Commands

• Modem Configuration tab – Set and read XTend Module parameters

Figure B.24 X-CTU User Interface (PC Settings, Range Test, Terminal and Modem Configuration tabs)

Install X-CTU software

Double-click the "setup_X-CTU.exe" file and follow prompts of the installation screens. This file is

located in the ‘software’ folder of the MaxStream CD and also under the ‘Downloads’ section of

the following web page: http://www.maxstream.net/helpdesk/download.php

Setup

To use the X-CTU software, a module assembly (XTend Module mounted to a MaxStream XTIB-R-

R Interface Board) must be connected to the serial port of a PC. The data rate and parity settings

of the serial port (“PC Settings” tab) must match those of the module (BD (Baud Rate) and NB

(Parity) Commands).

Serial Communications Software

A terminal program is built into the X-CTU Software. Other terminal programs such as

“HyperTerminal” can also be used. When issuing AT Commands through a terminal program

interface, use the following syntax:

Figure B.25 Syntax for sending AT Commands:

NOTE: To read a parameter value stored in a register, leave the parameter field blank.

The example above issues DT Command to change destination address of the module to “0x1F”.

To save the new value to the module’s non-volatile (long term) memory, issue WR (Write)

Command after modifying parameters.

XTend™ OEM RF Module – Product Manual v1.0

Appendix C:

Additional Information

1-Year Warranty

XTend OEM RF Modules from MaxStream, Inc. (the ʺProductʺ) are warranted against defects in

materials and workmanship under normal use, for a period of 1-year from the date of purchase. In

the event of a product failure due to materials or workmanship, MaxStream will repair or replace the

defective product. For warranty service, return the defective product to MaxStream, shipping

prepaid, for prompt repair or replacement.

The foregoing sets forth the full extent of MaxStreamʹs warranties regarding the Product. Repair or

replacement at MaxStreamʹs option is the exclusive remedy. THIS WARRANTY IS GIVEN IN LIEU

OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, AND MAXSTREAM SPECIFICALLY

DISCLAIMS ALL WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR

PURPOSE. IN NO EVENT SHALL MAXSTREAM, ITS SUPPLIERS OR LICENSORS BE LIABLE FOR

DAMAGES IN EXCESS OF THE PURCHASE PRICE OF THE PRODUCT, FOR ANY LOSS OF USE,

LOSS OF TIME, INCONVENIENCE, COMMERCIAL LOSS, LOST PROFITS OR SAVINGS, OR

OTHER INCIDENTAL, SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE

OR INABILITY TO USE THE PRODUCT, TO THE FULL EXTENT SUCH MAY BE DISCLAIMED BY

LAW. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR

CONSEQUENTIAL DAMAGES. THEREFOR, THE FOREGOING EXCLUSIONS MAY NOT APPLY

IN ALL CASES. This warranty provides specific legal rights. Other rights which vary from state to

state may also apply.

Ordering Information

Figure C.1 MaxStream OEM RF Module Part Numbers Key

XTend™ OEM RF Module – Product Manual v1.0

Contact MaxStream

Free and unlimited technical support is included with every MaxStream Radio Modem sold.

Please use the following resources for additional support:

Documentation: http://www.maxstream.net/helpdesk/download.php

Technical Support: Phone. (866) 765-9885 toll-free U.S. & Canada

(801) 765-9885 Worldwide

Live Chat. www.maxstream.net

E-Mail. rf-xperts@maxstream.net

MaxStream office hours are 8:00 am – 5:00 pm [U.S. Mountain Standard Time]

MaxStream 9XTEND 9XTEND OEM RF Module User Manual XStream OEM RF Module

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