Linx MDEV-868-NT Bedienungsanleitung
NT Series
Master Development System
User's Guide
A large-print version of this document is available at
www.linxtechnologies.com.
Table of Contents
1 Introduction
2 Ordering Information
2 NT Series Transceiver Development Board
2 Board Objects
3 Initial Setup
3 Troubleshooting
4 The Prototyping Area
5 The TX Power Select Switch
5 The Transceiver Area
6 The Power Area
6 The Evaluation Area
8 The Range Test Area
9 The PC Control Area
10 The PC Software
13 Using the Boards as a Design Reference
13 About Antennas
14 Board Control
14 Transmitter Output Power Selection
15 Transceiver Area
15 Header Section
16 Range Test Area
16 Power Area
17 Evaluation Area
17 LEDs
18 Single Routing
19 Online Resources
––
Introduction
The Linx NT Series RF transceiver modules offer a simple, efficient and
cost-effective method of adding wireless communication capabilities
to any product. The Master Development System (Figure 1) provides a
designer with all the tools necessary to correctly and legally incorporate
the NT Series into an end product. The development boards serve several
important functions:
• Rapid Module Evaluation: The boards allow the performance of the Linx
NT Series modules to be evaluated quickly in a user’s environment.
Using the onboard transcoders, a pair of development boards can be
used to evaluate the range performance of the modules.
• Application Development: An onboard prototyping area allows for the
development of custom circuits directly on the development board. All
signal lines are available on a header for easy access.
• Software Development: A PC interface allows for development and
testing of custom software applications for control of the module.
• Design Benchmark: The boards provide a known benchmark against
which the performance of a custom design may be judged.
The Master Development System includes two assembled development
boards, four NT Series transceivers*, two CW Series antennas, two 9V
batteries, four reverse polarity SMA connectors*, a USB interface board
and full documentation.
NT Series Master Development System
User's Guide
Figure 1: NT Series Master Development System
* One part is soldered to each board
1Revised 5/31/2013
––
Board Objects
NT Series Transceiver Development Board
1
2
3
4
5
6
7
8
910
11
12
13
14
15
17
16
Ordering Information
Ordering Information
Part Number Description
MDEV-868-NT 868MHz NT Series Master Development System
MDEV-900-NT 900MHz NT Series Master Development System
1. Prototype Area
2. Break-Out Header
3. RSSI Level
4. NT Series Transceiver
5. RP-SMA Antenna Connector
6. Module Power Header
7. Output Power Level
Selection Switch
8. Evaluation Selection Switch
9. Baud Rate Selection Dial
10. Channel (Frequency)
Selection Dial
11. Transcoder Range Test Area
12. PC Control Area
13. 9V Battery (on the back of
the board)
14. DC Power Jack
15. Master Power Switch
16. Mode Selection Switch
17. Module Mode Indicator LEDs
Figure 2: Ordering Information
Figure 3: NT Series Transceiver Development Board
2
––
3
Initial Setup
Unpack the development system, attach the antennas and install a 9V
battery on each development board. The boards can be used in two
different configurations: Prototype and Evaluation. The Mode Selection
switch sets the configuration. By default, the boards are set to Range Test
in the Evaluation configuration.
Evaluation Configuration
Setting the Mode Select switch to the EVALUATION (right) position enables
the Evaluation Configuration. In this configuration, the module’s signal lines
are routed to the Evaluation Area for control. This enables the module to be
configured by the controls on the board while allowing custom data to be
sent over the link.
Range Test
The development boards feature an onboard Linx MT Series transcoder
which facilitates range testing. Buttons on one board activate a light or
buzzer on the other. A confirmation LED provides visual acknowledgment
that a transmission was received across the wireless link.
Range Test is part of the Evaluation configuration and is the default
configuration out of the box. To use the boards this way, place the Mode
Select switch to Evaluation and the Evaluation Select switch to the RANGE
TEST (middle) position. This routes the DATA_IN, DATA_OUT and T/R_SEL
lines to the MT Series Transcoder.
Prototype Configuration
Setting the Mode Select switch to the PROTOTYPE (left) position enables
the Prototype Configuration. In the Prototype configuration, the module’s
signal lines are routed to the break-out header next to the Prototype Area.
This allows the module to be controlled with custom application circuitry.
Software Development
The kit includes one USB interface board for connection to a PC. Included
software demonstrates use of the module’s Command Data Interface (CDI).
Troubleshooting
If the boards fail to work out of the box, then try the following:
• Make sure that the Master Power, Mode Select and Evaluation Select
switches are in the correct positions. The Active LED should be on
––
• Make sure that the Baud Rate and Channel switches are set the same
on both boards
• Check that the antennas are connected
• Make sure that a jumper is installed on the Module Power Header
• Make sure that the batteries are not dead
If all of these appear to be in order, please call +1 800 736 6677 or e-mail
The Prototyping Area
In addition to its evaluation functions, the board may also be used for
product development. It features a prototyping area to facilitate the addition
of application-specific circuitry (Figure 4). The prototyping area contains a
large area of plated through-holes so that external circuitry can be placed
on the board. The holes are set at 0.100" on center with a 0.040" diameter,
accommodating most industry-standard SIP and DIP packages.
External circuitry can be easily interfaced to the NT transceiver through the
breakout header (TS1) to the right of the prototyping area. The Mode Select
switch should be set to the left position to enable the module’s lines to
be controlled from the prototyping area. At the bottom of the prototyping
area is a row connected to the 5V power supply and at the top is a row
connected to ground.
Note: The onboard 5-volt regulator has approximately 600mA available
for additional circuitry. If more current is required, the user must add an
additional regulator or power the board from an external supply.
Figure 4: The Development Board
Prototyping Area
4
––
5
The TX Power Select Switch
The board has a switch to select among three different transmitter output
power levels (Figure 5). The right position sets the module to full power of
about 12dBm. The center position sets the output power to about 0dBm,
which is the legal limit for most applications. The left position uses resistor
R37 to set the power. This position is an unpopulated 0603 size resistor
location. A resistor can be placed here to set the output power to any
available level. Please see the NT Series Data Guide for more information
on resistor values. A power cycle is required for changes to take effect.
The Transceiver Area
The transceiver section consists of the transceiver module and a reverse-
polarity SMA connector as shown in Figure 6. The RP-SMA connector
is FCC compliant and reverses the center pin and socket. RP-SMA
connectors will mate with but not provide electrical connection to standard
SMA connectors or SMA equipped antennas. A header next to the module
disconnects the module’s power from the main board power. This can
be used for current measurements or to power the module alone from an
external power source. A jumper must be installed to power the module
from the board.
Figure 5: The Development Board TX Power Select Switch
Figure 6: The Development Board Transceiver Area
––
6
The Power Area
The Power Area has two switches that control power to the board and the
type of operation (Figure 7). The Master Power switch supplies power from
the 9V battery or the power jack to the board. The power jack accepts a
2.5mm plug with the tip ground and the shell 7 to 12VDC.
The Mode Select switch configures the board for either Prototype operation
(left position) or Evaluation operation (right position). In Prototype operation,
the module’s signal lines are routed to the header next to the Prototype
Area. This allows custom circuits to easily interface with the module.
In Evaluation operation, the module’s signal lines are routed to the
Evaluation Area. The controls in this area allow the module to be operated
without any other circuits, microcontrollers or a PC.
Three LEDs show the state of the module. Active shows the module is
on and ready for operation. Standby and Power Down indicate that the
low power modes have been entered and the module is not ready for
operation.
The Evaluation Area
The Evaluation Area is activated by setting the Mode Select switch to the
right position. Figure 8 shows the Evaluation Area.
The Evaluation Select switch configures the area for different types of
evaluation. The left position puts the module into transmit mode.
The orange TX LED lights up and any data present on the blue DATA_IN
test point is transmitted by the module.
Figure 7: The Development Board Power Area
Dieses Handbuch passt für folgende Modelle
1
Inhaltsverzeichnis
Andere Linx Hauptplatine Handbücher
Beliebte Hauptplatine Handbücher anderer Marken
Telit Wireless Solutions
Telit Wireless Solutions SL869-3DR Bedienungsanleitung
Gigabyte
Gigabyte GA-9IVDT Bedienungsanleitung
Texas Instruments
Texas Instruments ADS8372EVM Bedienungsanleitung
Commell
Commell MS-C73 Bedienungsanleitung
IBT Technologies
IBT Technologies MB860 Bedienungsanleitung
Nvidia
Nvidia TEGRA DG-04927-001_V01 Bedienungsanleitung
