RFSOLUTIONS DS-ZULUT Smart radio telemetry module Datasheet

ZULU T
Smart Radio Telemetry Module
Features
•
10 Channel Transceiver Module
•
Range up to 2,000 Metres
•
10 Digital Input / Outputs
•
2 Analogue Inputs (10bit), Outputs (PWM)
•
Receiver Outputs Follow Transmitter Inputs
•
Minimal external components
•
Direct Led Drive Shows Data Reception
•
Secure Data Protocol (auto Acknowledge)
•
Ultra Low Power 1.8—3.6V Operation
•
CE Compliant for Licence Free Use
•
Easy Pairing Process
•
One to One operation
Applications
•
Remote Control
•
868MHz Operating Frequency
•
Remote Networking
•
100mW Transmit Power
•
Remote Switching
•
Small Form Factor
•
Remote Traffic Lights
The ZULU-T Telemetry Module provides a reliable Transceiver based
industrial Remote Switch with up to 2,000 metres range. Two
modules are combined to provide a simple network of radio switching.
Each unit is supplied ready to operate, once paired with another
Module a remote control system is created
Connections for Power, antenna and Input / Output are the only
connections required
Part No
Description
ZULU-T868
Radio Telemetry Module DIP Package
ZULU-T868-SO
Radio Telemetry Module SMT Package
DS-ZULUT-2
ZULU Telemetry
Pin out
Pr
im
el
Pin Description
Pin No
Name
1
ANT
2, 15
GND
3
Analogue /
Digital
In
4-5
I/O1-2
In / Out
6, 8-11, 25
-27
I/O 3-10
In / Out
7, 21-22
NC
12
Reset
In
Resets module operation, pull high for ordinary use.
13
Watchdog
In
Connect to Vcc = Turns OFF “watchdog”
Connect to GND = Turns ON “watchdog”
14
Error LED
Out
LED drive output. Flashes if Zulu Tx has not received
acknowledgment or Zulu Rx not received watchdog.
16
Vcc
In
Supply voltage
17, 18
TX/RX
LEDs
Out
Active LED output when module is transmitting or
receiving RF data packets.
19
TX/RX
In
Connect to Vcc = Module is a Transmitter
Connect to GND = Module is a Receiver
20
Ch Sel
In
Sets the channel frequency
Connect to Vcc = Operates on ch A 869.500
Connect to GND = Operates on ch B 868.133
23
Learn
In
Connect to momentary switch to GND, when activated places the module into pairing mode.
24, 28
IRQ In/Out
In / Out
Connect together to enable RF interrupts on chip
(mandatory).
29-30
XTAL1-2
In
Connect 30MHz XTAL here to drive RF circuit
In
In
Description
Antenna Input / Output 50ohm Impedance
in
Connect to ground
Connect to Vcc = I/O1-2 are analogue
Connect to GND = I/O1-2 are digital
Analogue or digital I/Os 0—Vcc,
connect to GND if unused
When configured as transmitter:
Digital inputs: high Impedance inputs
When configured as receiver:
Digital outputs: LVCMOS output drive
y
ar
Leave unconnected
ta
Da
DS-ZULUT-1
Direction
ZULU Telemetry
General Description of Operation
Pr
Each module can be set to act as a ‘ Transmitter’ or ‘Receiver’ A remote telemetry system is
achieved when two modules are paired together, as transmitter (ZuluTx) and receiver (ZuluRx).
Each time an input changes on the ZuluTx, it will transmit the status of its inputs to the
paired ZuluRx(s). which will set its outputs to follow the ZuluTx Inputs and reply back with an
acknowledge signal. Once completed the modules will then go into sleep mode
im
el
Pin Descriptions:
Channel Select (pin 20)
This sets the operating carrier frequency of the module. This enables separate groups of modules to coexist in the same vicinity without any interference. For operation see page 2.
TX / RX (pin 19)
When connected to Vcc Zulu is a Transmitter
When connected to GND Zulu is a Receiver
XTAL1, XTAL2 (pins 29, 30)
The Zulu module requires a 30MHz drive crystal to be connected between XTAL1-2
Any standard crystal +/-10ppm ~20pF such as Farnell part no. 184-2247. Note tuning capacitors are not required.
Learn / Erase (pin 23)
Each transmitter has a unique identity. A receiver can ‘sync’ with a transmitter so that the
receiver outputs will respond to the transmitter inputs.
in
y
ar
To Learn:
1.
Briefly press the “sync” switch on the receiver
2.
Briefly operate any of the transmitter inputs
To Erase
1.
Hold pin 7 on the receiver to ground for >10seconds.
2.
(For completed circuit press learn switch for 10sec)
3.
Indication of the process is shown the TX/RX LED.
ta
Da
Tx / Rx LEDs (pins 17, 18)
Direct LED drive which operate whenever there is RF activity Tx or Rx
Mode
Normal operation
Learn mode
DS-ZULUT-1
TX/Rx LED
Description
ON
Module is transmitting/receiving RF data
OFF
Flashing at low
speed
No RF data is being transmitted/received
Flashing at high
speed 3secs
Module is searching for another to pair with.
Pairing successful
ZULU Telemetry
The following descriptions apply to the Zulu Module in TRANSMITTER Mode
Pr
When configured as a Transmitter the ZULU Module will automatically default to low power
sleep mode until any input state change takes place.
On receipt of an input state change the ZuluTx will transmit a packet showing the status of
all inputs (multiple state changes can take place simultaneously).
The ZuluTx will remain “awake” until:
1.
The paired ZULU Rx Module has acknowledged, or
2.
A timeout value of 4 retry transmissions. (Pin 26 output will then be flashed)
im
el
Analogue / Digital (pin 3)
This input configures Input 1-2 to be analogue or Digital inputs. Analogue is enabled when pin
is HIGH.
Note: this input is read at power up only.
in
Analogue Inputs (4,5)
If enabled each input is 10bit A/D which can accept a voltage between 0 –Vcc.
Each input is sampled ten times per second, and the value is averaged before transmission.
ZuluTx will transmit whenever there is a change in the detected input voltage of 0.025V
If no change of voltage is measured then the ZuluTx will not transmit. A nominal 1uF capacitor
is recommended across the analogue inputs in order to prevent noise being read and transmitted.
Note: A maximum of three RF packets are sent per second.
y
ar
Digital Inputs
High Impedance Inputs, LVCMOS / LVTTL compatible.
Can be connected directly to CMOS/TTL logic or switch inputs connected to 0V (active low)
A change on the input will cause the ZuluTx to wake, read the inputs and initiate RF
transmission.
ta
Da
Watchdog Input (pin 13)
The watchdog is designed to enable the ZuluRx to be aware of any potential problems with the
RF link to a sync’ed ZuluTx.
When activated the ZuluTx will automatically transmit a call in packet a regular basis every
10seconds. Input statuses are not sent as part of the watchdog signal.
Note: This pin is only read on power up. Watchdog is only valid on a 1-1 system.
RF Fault (pin 26)
Direct drive to LED. Each time the ZuluTx transmits the status of its inputs, it expects an
acknowledgement from the paired receiver. If this is received then the RF Fault LED is not
used. If no acknowledgement is received RF Fault is flashed.
DS-ZULUT-1
RF Fault LED Status
Description
OFF
Receiver has acknowledged correctly
Flashing at 1Hz
No acknowledgment received
ZULU Telemetry
Transmitter example application circuit
Vcc
ANT
Pr
3
30
4
29
5
28
im
el
Analogue Inputs
GND
NC
6
27
7
26
8
Vcc
Vcc
25
ZULU-T
9
24
10
23
11
22
12
21
13
20
14
15
NC
NC
Vcc
NC
19
18
TX LED
17
y
ar
Vcc 16
in
10K
RF Fault
XTAL
RX LED
SWITCH INPUTS 3 - 7
Notes:
Watchdog is ON
Channel selected is 869.500
Analogue inputs active
SWITCH INPUTS 8 - 10
ta
Da
DS-ZULUT-1
ZULU Telemetry
The following descriptions apply to the Zulu module in RECEIVER mode
Analogue outputs (pin 4, 5)
If enabled the ZuluRx outputs PWM signal.
The PWM may be used directly (e.g. for motor control)
The PWM signal is a proportional digital output representing the analogue input.
Pr
If the analogue input is 0V then the PWM output will be ‘0’
If the analogue input is 1/2Vcc then the PWM output will be a square wave with 50%
duty cycle, (operating at approx 23KHz)
If the analogue input is Vcc then the PWM output will be ’1’
im
el
In order to re-create an analogue signal (representing the analogue input at the transmitter)
the output should be fed through an RC network as above.
in
y
ar
Digital outputs
CMOS / TTL compatible outputs. Can be connected directly to CMOS/TTL logic or drive
DS-ZULUT-1
ta
Da
Analogue / Digital (pin 3)
This input configures output 1-2 to be analogue or digital outputs.
Note: this input is read at power up only.
Watchdog Input (pin 13)
When activated the ZuluRx module will automatically expect to receive a watchdog signal from
the ZuluTx on a regular basis (10seconds) If it has failed to receive this within a 30second
period it will assert drop all outputs and flash the RF fault output
RF fault
Direct drive to LED. Flashes when watchdog fails.
RF fault status
Description
OFF
ZuluRx has received watchdog correctly
Flashing at 2Hz
No watchdog received
OFF
watchdog is inactive
ZULU Telemetry
Receiver Application Circuit
Vcc
ANT
Pr
GND
Analogue Outputs
3
30
4
29
5
28
6
27
im
el
NC
26
7
8
25
ZULU-T
24
10
23
11
22
12
21
10K
13
20
RF Fault
14
19
15
18
Vcc
Vcc 16
Notes:
Watchdog is ON
Channel Selected is 869.500
Analogue outputs active
LEARN
NC
Vcc
NC
TX LED
17
RX LED
y
ar
LED OUTPUTS 3 - 7
in
9
Vcc
XTAL
LED OUTPUTS 8 - 10
ta
Da
DS-ZULUT-1
ZULU Telemetry
Application Example ONE to ONE
Pr
im
el
In this application the outputs at the receiver will track the inputs at the transmitter.
The receiver outputs are acknowledged back to the transmitter.
If required the Watchdog can be enabled to inform the user if the RF system has a fault.
in
y
ar
ta
Da
DS-ZULUT-1
ZULU Telemetry
Mechanical Dimensions
Pr
im
el
in
y
ar
Range
ta
Da
The antenna choice and position directly controls the system range. Keep it clear of other
metal in the system. The best position by far, is protruding vertically from the top of the product. This is often not desirable for practical reasons and thus a compromise may be needed.
Note that the space around the antenna is as important as the antenna itself. All radio systems are dependant on a radio signal being received through airspace.
The range quoted is the optimal in direct line of sight without obstacles and in good atmospheric conditions.
Range is affected by many things, for example local environmental conditions, atmospheric
conditions, interference from other radio transmitters. For evaluating the local environment
please see our RF Meter (DS006)
In very worse case applications the range quoted may be reduced dramatically below
the optimal range stated.
Recommended Antenna 868MHz
The BEAD Antenna provides a Miniature PCB mounting solution where
performance is required from a small space .
Available as straight or 90 degree mount this antenna is a general
purpose omni-directional. Please see Datasheet ANT-BEAD-868
DS-ZULUT-1
ZULU Telemetry
Technical Specifications
Absolute Maximums:
Temperature Range:
Range Storage –50 to +125oC.
Min
Max
Units
4.0
V
5.8
V
VDD +
V
+5
dBm
Max
Units
1.8
3.6
V
-40
+85
Pr
Parameter
Supply Voltage
Voltage on any Input
VDD >2.2V
im
el
VDD <2.2V
Max Input power (thro Antenna)
Supply Voltage
Zulu Tx Supply Current:
When Transmitting
When sleeping
Min
Zulu Rx Supply Current:
Min
Operating Frequency 1
Deviation
Operating Temperature
C
85
mA
1
uA
18.5
mA
Typical
Max
869.50
0868.1
33
Operating Frequency 2
o
ta
Da
AC Characteristics
Parameter
Typical
y
ar
Operating Temperature
in
Parameter
MHz
MHz
kHz
50
-40
Units
+85
o
C
Zulu Tx Output Power
+20
dBm
Zulu Tx—Rx FSK Raw RF Data Rate
9.6
Kbps
Zulu Rx Sensitivity
DS-ZULUT-1
-121
dBm
ZULU Telemetry
System Characteristics
Parameter
Min
Time from Zulu Tx input activation time to Zulu RX output Activation
Pr
Time from Zulu Tx input activation time to Zulu RX output Relaxing
Typical
Max
Units
28
ms
28
ms
im
el
in
y
ar
ta
Da
DS-ZULUT-1
ZULU Telemetry
ZuluT Evaluation Board
Pr
The ZULU EVAL Boards provide a ready made platform which can be used for
evaluation or complete projects. These boards demonstrate the capabilities
of ZULU Modules..
•
•
10 Digital Channels
•
2 Analogue Channels
(PWM)
Serial Output RS232 & USB
Watchdog Feature
in
•
im
el
Features
•
Provides a Radio Link with;
Direct Antenna Connection
•
9-12Vdc Power in Terminal
•
LED Indication of
•
Power
•
Transmit / Receiver
•
RF Error
y
ar
•
ta
Da
The Evaluation boards are sold as a TX and RX PCB pair, ready for component use.
DS-ZULUT-1
Part No
Description
ZULU-EVALT
Tx and RX PCB Pair
PSU-12V1A-UK
Power Supply 12V 100mA
ZULU Telemetry
ZuluT Evaluation Board Configuration
Pr
im
el
Overview
When paired together the outputs of the receiver will follow the inputs at the transmitter
The serial outputs also provide data from the receiver
in
To get up an running complete the following;
1.
Set the jumper links as below
2.
Screw in Antenna
3.
Apply power
4.
Pair together the receiver and transmitter board
y
ar
Jumper Links
Note that the Jumper links are read on Power up only
Name
When Fitted
When Open
J3
A/D
I/O 1 & 2 are
analogue operation
I/O 1 & 2 are set to
Digital operation
J3
Channel Select
Zulu operates on Channel A
J4
TX/ RX Select
J4
(Transmitter)
Watchdog
Enable
J4
PWM
Enable
(Receiver)
LK1-LK4
LK5
(Receiver)
DS-ZULUT-1
Zulu set as Transmitter
Watchdog enabled
Enables PWM Output
Comms
Select
All links from Centre to USB
All links from Centre to RS232
PWM Supply
Vcc: PWM is powered from Vcc
VSUPPLY: PWM is powered
from incoming V supply at TB1
ta
Da
Reference
Zulu operates on Channel B
Zulu set as Receiver
Watchdog Disabled
Output’s 1& 2 set to
Digital
N/A
ZULU Telemetry
Pairing Process
In order to pair together a Transmitter and receiver,
1.
On the Receiver Briefly press the Receiver ‘Sync Button’
2.
Briefly operate any of the transmitter buttons
For all other operation please refer to the ZULU Module operation
Pr
Analogue in / PWM Out
im
el
When using the analogue RF link, by turning the potentiometer VR1 or VR2, outputs 1 and 2
at the receiver will vary between 0 and 100% PWM, the EVAL-T board has these outpus connected to LED’s 1 and 2 which will ‘dim’ their brightness with the adjustment of the transmitter VR1 and 2
.
Serial Data Output
in
The ZULUEVAL-T Receiver board provides a serial data output on both the RS232 and USB
outputs each time a valid datapacket is received. The serial data output is to the following
configuration
Baud Rate:
19200
Data bits:
8
Stop Bits:
1
Parity:
none
Handshaking:
RTS/CTS
y
ar
ta
Da
DS-ZULUT-1
ZULU Telemetry
Zulu evaluation board receiver schematic
Pr
im
el
in
y
ar
ta
Da
DS-ZULUT-1
ZULU Telemetry
Zulu evaluation board transmitter PCB layout
Pr
im
el
in
y
ar
ta
Da
DS-ZULUT-1
ZULU Telemetry
Reader Response
It is our intention to provide you with the best documentation possible to ensure successful
use of your RF Solutions product.
If you wish to provide your comments on organization, clarity, subject matter, and ways in
which our documentation can better serve you, please email us your comments to the Technical Publications Manager
Application:
Would you like a reply? Y / N
Datasheet:
DS-ZULUT-1
Questions:
1. What are the best features of this document?
2. How does this document meet your hardware and software development needs?
3. Do you find the organization of this document easy to follow? If not, why?
4. What additions to the document do you think would enhance the structure and subject?
5. What deletions from the document could be made without affecting the usefulness?
6. Is there any incorrect or misleading information (what and where)?
7. How would you improve this document?
RF Solutions Ltd. Recycling Notice
Meets the following EC Directives:
DO NOT Discard with normal waste, please recycle.
ROHS Directive 2002/95/EC
Specifies certain limits for hazardous substances.
WEEE Directive 2002/96/EC
Waste electrical & electronic equipment. This product must be disposed of through a licensed
WEEE collection point. RF Solutions Ltd., fulfils its WEEE obligations by membership of an approved compliance scheme.
R F Solutions Ltd.,
Unit 21, Cliffe Industrial Estate,
Lewes, E. Sussex. BN8 6JL. England.
Email : [email protected]
http://www.rfsolutions.co.uk
Tel Sales:
01273 898 020
Tel Technical:
01273 898 007
Tel Gen Enq:
01273 898 000
Whilst the information in this document is believed to be correct at the time of issue, RF Solutions Ltd does not accept any liability whatsoever for its accuracy,
adequacy or completeness. No express or implied warranty or representation is given relating to the information contained in this document. RF Solutions Ltd
reserves the right to make changes and improvements to the product(s) described herein without notice. Buyers and other users should determine for themselves the suitability of any such information or products for their own particular requirements or specification(s). RF Solutions Ltd shall not be liable for any loss
or damage caused as a result of user’s own determination of how to deploy or use RF Solutions Ltd’s products. Use of RF Solutions Ltd products or components
in life support and/or safety applications is not authorised except with express written approval. No licences are created, implicitly or otherwise, under any of RF
Solutions Ltd’s intellectual property rights. Liability for loss or damage resulting or caused by reliance on the information contained herein or from the use of the
product (including liability resulting from negligence or where RF Solutions Ltd was aware of the possibility of such loss or damage arising) is excluded. This will not
operate to limit or restrict RF Solutions Ltd’s liability for death or personal injury resulting from its negligence.
Similar pages