DS-ZULUT [RFSOLUTIONS]
Smart Radio Telemetry Module; 智能无线电遥测模块
| 型号： | DS-ZULUT |
| 厂家： | 
RFSOLUTIONS.LTD |
| 描述： | Smart Radio Telemetry Module |
| 文件： | 总17页 (文件大小：3319K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
ZULU T
Smart Radio Telemetry Module
Features
10 Channel Transceiver Module
Range up to 2,000 Metres
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•
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•
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•
•
•
•
•
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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
Applications
One to One operation
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•
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Remote Control
Remote Networking
Remote Switching
Remote Traffic Lights
868MHz Operating Frequency
100mW Transmit Power
Small Form Factor
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 switch-
ing.
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
Pin Description
Pin No
1
Name
ANT
Direction
Description
In
In
Antenna Input / Output 50ohm Impedance
Connect to ground
2, 15
GND
Analogue /
Digital
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
3
In
4 - 5
I/O1-2
In / Out
When configured as transmitter:
Digital inputs: high Impedance inputs
When configured as receiver:
6, 8-11, 25
-27
I/O 3-10
In / Out
Digital outputs: LVCMOS output drive
7, 21-22
12
NC
Leave unconnected
Reset
In
In
Resets module operation, pull high for ordinary use.
Connect to Vcc = Turns OFF “watchdog”
Connect to GND = Turns ON “watchdog”
13
Watchdog
LED drive output. Flashes if Zulu Tx has not received
acknowledgment or Zulu Rx not received watchdog.
14
16
Error LED
Vcc
Out
In
Supply voltage
TX/RX
LEDs
Active LED output when module is transmitting or
receiving RF data packets.
17, 18
Out
Connect to Vcc = Module is a Transmitter
Connect to GND = Module is a Receiver
19
20
23
TX/RX
Ch Sel
Learn
In
In
In
Sets the channel frequency
Connect to Vcc = Operates on ch A 869.500
Connect to GND = Operates on ch B 868.133
Connect to momentary switch to GND, when activated plac-
es the module into pairing mode.
Connect together to enable RF interrupts on chip
(mandatory).
24, 28
29-30
IRQ In/Out
XTAL1-2
In / Out
In
Connect 30MHz XTAL here to drive RF circuit
DS-ZULUT-1
ZULU Telemetry
General Description of Operation
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
Pin Descriptions:
Channel Select (pin 20)
This sets the operating carrier frequency of the module. This enables separate groups of mod-
ules 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 ca-
pacitors 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.
To Learn:
1.
2.
Briefly press the “sync” switch on the receiver
Briefly operate any of the transmitter inputs
To Erase
1.
2.
3.
Hold pin 7 on the receiver to ground for >10seconds.
(For completed circuit press learn switch for 10sec)
Indication of the process is shown the TX/RX LED.
Tx / Rx LEDs (pins 17, 18)
Direct LED drive which operate whenever there is RF activity Tx or Rx
Mode
TX/Rx LED
ON
Description
Module is transmitting/receiving RF data
Normal operation
OFF
No RF data is being transmitted/received
Flashing at low
speed
Module is searching for another to pair with.
Pairing successful
Learn mode
Flashing at high
speed 3secs
DS-ZULUT-1
ZULU Telemetry
The following descriptions apply to the Zulu Module in TRANSMITTER Mode
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.
2.
The paired ZULU Rx Module has acknowledged, or
A timeout value of 4 retry transmissions. (Pin 26 output will then be flashed)
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.
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 transmit-
ted.
Note: A maximum of three RF packets are sent per second.
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.
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.
RF Fault LED Status
Description
OFF
Receiver has acknowledged correctly
Flashing at 1Hz
No acknowledgment received
DS-ZULUT-1
ZULU Telemetry
Transmitter example application circuit
Vcc
ANT
GND
30
29
28
27
26
25
24
23
22
21
20
19
18
17
3
4
XTAL
5
Analogue Inputs
6
7
NC
8
ZULU-T
9
10
11
12
13
14
15
16
NC
NC
Vcc
Vcc
NC
10K
RF Fault
Vcc
TX LED
Vcc
RX LED
SWITCH INPUTS8 - 10
SWITCH INPUTS 3 - 7
Notes:
Watchdog is ON
Channel selected is 869.500
Analogue inputs active
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.
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’
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.
Digital outputs
CMOS / TTL compatible outputs. Can be connected directly to CMOS/TTL logic or drive
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
OFF
Description
ZuluRx has received watchdog correctly
Flashing at 2Hz
OFF
No watchdog received
watchdog is inactive
DS-ZULUT-1
ZULU Telemetry
Receiver Application Circuit
Vcc
ANT
GND
30
29
28
27
26
25
24
23
22
21
20
19
18
17
3
4
5
XTAL
Analogue Outputs
6
7
NC
8
9
ZULU-T
LEARN
10
11
NC
NC
Vcc
12
Vcc
10K
13
RF Fault
14
Vcc
TX LED
15
Vcc
16
RX LED
LED OUTPUTS8 - 10
LED OUTPUTS 3 - 7
Notes:
Watchdog is ON
Channel Selected is 869.500
Analogue outputs active
DS-ZULUT-1
ZULU Telemetry
Application Example ONE to ONE
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.
DS-ZULUT-1
ZULU Telemetry
Mechanical Dimensions
Range
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 prod-
uct. 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 sys-
tems 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 atmos-
pheric 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: Storage –50 to +125oC.
Parameter
Min
Max
4.0
Units
V
Supply Voltage
Voltage on any Input
VDD >2.2V
VDD <2.2V
5.8
V
V
VDD +
Max Input power (thro Antenna)
+5
dBm
Parameter
Min
1.8
-40
Typical
Max
3.6
Units
V
Supply Voltage
Operating Temperature
+85
oC
Zulu Tx Supply Current:
When Transmitting
When sleeping
85
1
mA
uA
Zulu Rx Supply Current:
AC Characteristics
18.5
mA
Parameter
Min
-40
Typical
Max
Units
MHz
MHz
kHz
Operating Frequency 1
Operating Frequency 2
Deviation
869.50
0868.1
33
50
Operating Temperature
Zulu Tx Output Power
+85
+20
oC
dBm
Zulu Tx—Rx FSK Raw RF Data Rate
Zulu Rx Sensitivity
9.6
Kbps
dBm
-121
DS-ZULUT-1
ZULU Telemetry
System Characteristics
Parameter
Min
Typical
28
Max
Units
ms
Time from Zulu Tx input activation time to Zulu RX out-
put Activation
Time from Zulu Tx input activation time to Zulu RX out-
put Relaxing
28
ms
DS-ZULUT-1
ZULU Telemetry
ZuluT Evaluation Board
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..
Features
•
Provides a Radio Link with;
•
10 Digital Channels
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2 Analogue Channels
(PWM)
•
•
•
•
•
Serial Output RS232 & USB
Watchdog Feature
Direct Antenna Connection
9-12Vdc Power in Terminal
LED Indication of
•
•
•
Power
Transmit / Receiver
RF Error
The Evaluation boards are sold as a TX and RX PCB pair, ready for component use.
Part No
Description
ZULU-EVALT
Tx and RX PCB Pair
PSU-12V1A-UK
Power Supply 12V 100mA
DS-ZULUT-1
ZULU Telemetry
ZuluT Evaluation Board Configuration
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
To get up an running complete the following;
1.
2.
3.
4.
Set the jumper links as below
Screw in Antenna
Apply power
Pair together the receiver and transmitter board
Jumper Links
Note that the Jumper links are read on Power up only
Reference
J3
Name
A/D
When Fitted
When Open
I/O 1 & 2 are
analogue operation
I/O 1 & 2 are set to
Digital operation
J3
J4
Channel Select
TX/ RX Select
Zulu operates on Channel A
Zulu set as Transmitter
Zulu operates on Channel B
Zulu set as Receiver
J4
Watchdog
Enable
Watchdog enabled
Watchdog Disabled
(Transmitter)
J4
PWM
Enable
Output’s 1& 2 set to
Digital
Enables PWM Output
(Receiver)
Comms
Select
All links from Centre to USB
All links from Centre to RS232
LK1-LK4
N/A
Vcc: PWM is powered from Vcc
PWM Supply VSUPPLY: PWM is powered
from incoming V supply at TB1
LK5
(Receiver)
DS-ZULUT-1
ZULU Telemetry
Pairing Process
In order to pair together a Transmitter and receiver,
1.
2.
On the Receiver Briefly press the Receiver ‘Sync Button’
Briefly operate any of the transmitter buttons
For all other operation please refer to the ZULU Module operation
Analogue in / PWM Out
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 con-
nected to LED’s 1 and 2 which will ‘dim’ their brightness with the adjustment of the transmit-
ter VR1 and 2
.
Serial Data Output
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:
Data bits:
Stop Bits:
Parity:
19200
8
1
none
RTS/CTS
Handshaking:
DS-ZULUT-1
ZULU Telemetry
Zulu evaluation board receiver schematic
DS-ZULUT-1
ZULU Telemetry
Zulu evaluation board transmitter PCB layout
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 Tech-
nical Publications Manager
Application:
Would you like a reply? Y / N
Datasheet:
DS-ZULUT-1
Questions:
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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?
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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 ap-
proved compliance scheme.
R F Solutions Ltd.,
Unit 21, Cliffe Industrial Estate,
Lewes, E. Sussex. BN8 6JL. England.
Email : sales@rfsolutions.co.uk http://www.rfsolutions.co.uk
Tel Sales:
Tel Technical: 01273 898 007
Tel Gen Enq: 01273 898 000
01273 898 020
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 them-
selves 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
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