ZULU M Radio MODEM Module Features • Intelligent RF Modem Module • Serial Data Interface with Handshake • Host Data Rates up to 38,400 Baud • RF Data Rates to 56Kbps • Range up to 2,000 Metres • Minimal external components • Direct Led Drive Shows Data Flow • 8 User Selectable Channels • Secure Data Protocol • Ultra Low Power 2.2 - 3.6V Operation • CE Compliant for Licence Free Use • 868MHz or 915MHz Versions Applications • Remote Networking • 100mW Transmit Power (+13dBm) • USB/RS232 Cable Replacement • Receiver Sensitivity –116dBm • Remote Data Log • Meter Reading The ZULU Modem module is a highly integrated RF Modem and intelligent controller with simple interface to achieve a wireless serial data link for data (upto 38K4bps) over 2KM range. The user interface is standard RS232 style control operating at low voltage. All RF operation is automatically controlled (with error checking etc) so the Zulu can be treated as a simple Communications device. Possible applications include one-to-one and multi-node wireless links in applications including car and building security, EPOS, inventory tracking, remote industrial process monitoring and computer networking. Because of their small size and low power requirements this module is ideal for use in portable, battery-powered applications such as hand-held terminals. Part No Description ZULU-M868 Radio Telemetry Module DIP Package ZULU-M868-SO Radio Telemetry Module SMT Package DS-ZULU Modem-1 ZULU Modem Pinout Pin Description Pin No Name Direction Description 1 ANT In 2, 15 GND In Connect to Ground 3-5, 11, 13-14, 20-24 N/C N/A Unused Leave Disconnected. 6 RX In (Low Level RS232) Data in 7 TX Out Low Level RS232 Data Out 8 LINK In Connect to LINK on Pin 28 9 CTS Out Low Level RS232 CTS 10 RTS In Low Level RS232 RTS 12 RESET In Device Reset Input (Tie High via 10K Resistor) 16 Vcc In +2.2-3.6v 17-18 DR1-DR2 In Host Data Rate selection. Antenna Input / Output 50ohm Impedance 19 WRE In When High configuration data is held in EEPROM. When Low configuration data is held in volatile memory and lost on power cycle. 25 PD In Power down mode. Take low to enter Sleep mode 26 TX LED Out RF TX LED indicator 27 RX LED Out RF RX LED indicator 28 LINK Out Connect to LINK on Pin 8 29-30 XTAL1-2 In Connect 30MHz XTAL here to drive RF Circuit DS-ZULU Modem-1 ZULU Modem Pin Descriptions: RX, TX This is the Data Input / Output. Data is transmitted and received at the low voltage level (dependant on Vcc being used). Serial Data Format Baud Rate: Defined by DR1 and DR2 Pins Data Bits: 8 Parity: None Stop Bits: 1 Flow Control: Hardware CTS / RTS CTS, RTS Clear to Send and Request to Send are standard data flow control as use in RS232 systems, these are standard but operate at the Zulu Vcc low level voltage. RESET Connection to GND Resets the Zulu Module. Zulu Modem starts up when this input is taken from GND to Vcc. Normal operation: connect to Vcc through a 10Kohm Resistor Vcc: Supply Voltage (2.2—3.6V) DR1 - DR2 These inputs define the host interface Baud Rate. They are read when RESET pin goes high. Tip: It is good practice to operate the host interface at half the speed of the RF data rate (set by Register R5 DR1 DR2 Host Baud Rate Open Fitted Open Fitted Open Open Fitted Fitted 4,800 9,600 19,200 38,400 PD This input enables ‘Sleep’ Mode. For normal operation connect to Vcc. No RF packets will be received by the module when it is in sleep mode. WRE Controls where the User configuration parameters are saved in EEPROM (Non-Volatile) or RAM (Volatile) Un-used. Tx / Rx LED Direct LED Drive which operates whenever there is RF activity. XTAL1, XTAL2 The Zulu module requires a 30MHz drive Crystal to be connected between XTAL1-2 Any standard crystal +/-10ppm ~20pF such as FEC 184-2247. DS-ZULU Modem-1 ZULU Modem Operation Overview The ZULU MODEM Module provides a simple Modem interface to the host controller. It handles all RF data communications automatically and without any requirement from the user (RF packetising , Preamble, Encoding, CRC Check etc). With this powerful high-speed Radio link. The following networks can be realised; OneOne-toto-One operation; for point to point data communication OneOne-toto-Many; Many A network consisting a master and many slaves (the receivers all have the same address) ManyMany-toto-One; where the transmitters all send to a single receiver address. Because each ZULU MODEM can contain a unique address, multiple ZULU networks can coexist in the same area. Broadcast operation; where a single master Zulu MODEM addresses many ZULU MODEMS concurrently. (using many ZULU MODEM modules set to the same address), Operating Modes Configuration Mode: In Configuration mode the Zulu MODEM can receive a number of commands and the internal registers can be preset to control its operation. In this mode the Zulu MODEM is ‘Offline’ and cannot send or receive RF data. Normal Operation : ZULU MODEM is ’Online’ automatically transmitting and receiving data from its host and across the RF network. Each ZULU MODEM has its own preset address. This is user set during configuration. Any data received is examined and the address header embedded within the data packet is compared with its address. Only data received with matching address will be processed and output to the host, all other data will be discarded. All ZULU MODEM modules are shipped with a default address of 7E7E7E. The ZULU MODEM contains an on-board data buffer equal to two data packets. Therefore if RTS is asserted (then the host is unable to receive data) the module will store a max of two data packets, all further data packets received will be discarded. DS-ZULU Modem-1 ZULU Modem Configuration Mode (offline) Commands can be set using a standard Terminal program or by sending the relevant ASCII characters. Each Command must be followed by the Carriage Return <CR> or ‘Enter’ Note All commands are entered in upper case Command Description Response from Zulu +++ Enter Configuration Mode Zulu responds with Status info ? retrieve the current register values Zulu responds with all Register Values F H P S Q DS-ZULU Modem-1 set factory default; R1=7F7F7F R2=7F7F7F R3 = 3 R4 = 7 R5 = 1 ‘OK’ Help Brief description of commands available Ping Mode This sends a ping request . The originating Zulu Modem will respond with the Recipient Zulu Modems’ response, eg. Received from 7F7F7F (D5) On receiving, the recipient Zulu Modem will respond with its address and the level of RSSI (Received Signal Strength) The Ping command is continuously repeated every 1 second until any command or character is entered. Where 7F7F7F = the recipient Address D5= RSSI RSSI Is a Hex value corresponding to the received signal strength Min = 20hex Max =E0hex Save Configuration ‘SAVED’ exit configuration mode and return to online mode No response ZULU Modem Register Setting (Configuration Mode) The internal registers enable various parameters to be controlled. To set a register type ‘R#=x’ where # is the register number (1-6) and x is the value to set For example to set the channel to channel 3 you would type the following. R3=3<CR> (Where <CR> is carriage return or enter on the keyboard) The modem will then return ‘OK’ or ‘Error’ if an incorrect command is entered. One you have set the register values you must save the changes by typing S<CR> The modem will return with ‘SAVED’ Register Value Range R1 0000 - FFFF (24 bit address) Description Example sets the recipient Zulu MODEM Address R1=0001 (Data sent is addressed to Zulu MODEM with address 0001) R2 0000 - FFFF (24 bit address) Set own Zulu Modem address R2=F001 (Data sent is from Zulu MODEM with address F001) R3 Ch 1-8 Set RF channel R3=2 (Transmit on Channel 2) Set the RF Transmit Power output R4=7 (sets Transmit Power to max)* R4 R5 0 1 2 3 4 5 6 7 = = = = = = = = -8dBm -5dBm -2dBm +1dBm +4dBm +7dBm +10dBm +13dBm 0 1 2 3 = 9,600 = 19,200 = 28,800 = 56,000 R5=3 (sets the RF data rate to 56Kbps) set the RF baud rate *Note : reducing Tx power reduces battery consumption! DS-ZULU Modem-1 Tip!: The lower the RD Data Rate the longer the achievable range! ZULU Modem Application Circuit Connection of the ZULU Modem to an RS232 or USB host terminal device such as a PC serial port may easily be achieved using the Application Schematic below. The 9 way ‘D’ socket (J1) provides the standard pin out required to connect directly to the serial port of any std PC using a 9 way male/female cable. The MAX3232 (a low voltage RS232 line driver) provides level conversion between the RS232 levels on the serial port and the logic levels pins of the ZULU Modem module. Alternatively the same can be achieved using the ZULU Eval Boards DS-ZULU Modem-1 ZULU Modem 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 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 below 30% of the optimal range stated. Recommended Antenna The BEAD Antenna provides a Miniature PCB mounting solution where a high performance is required from a small space . Available as straight or 90 degree mount this antenna is a general purpose omni-directional. It measures 8.5mm long, Dia 7. Please see Datasheet ANT-BEAD-868 DS-ZULU Modem-1 ZULU Modem Technical Specifications Absolute Maximums: Temperature Range: Range Storage –50 to +125oC. Parameter Min Max Units Supply Voltage -0.3 3.6 V Voltage on any Input -0.3 Vcc+0. V +10 dBm Max Units V Max Input power (thro Antenna) DC Characteristics Parameter Min Typical Supply Voltage 2.2 3.6 Operating Temperature -40 +85 o C Zulu Tx Supply Current: When Transmitting 100 mA 1 uA When Receiving 18.5 mA When sleeping 1 uA When sleeping Zulu Rx Supply Current: AC Characteristics Parameter Min Operating Frequency Operating Temperature Typical Max Units 848 888 MHz -40 +85 o C Zulu Tx Output Power +20 dBm Zulu Tx—Rx FSK Raw RF Data Rate 256 Kbps Zulu Rx Sensitivity DS-ZULU Modem-1 -116 dBm ZULU Modem Intentionally Blank DS-ZULU Modem-1 ZULU Modem Zulu Evaluation Board The ZULU EVAL Boards provide a ready made platform which can be used to build several projects which demonstrate the capabilities of ZULU Modules providing ready made Telemetry and Modem Solutions. Features • Easy assemble Projects; • Watchdog Feature • Direct Antenna Connection • 9-12Vdc Power in Screw Term • LED Indication of • Power • Transmit / Receiver • RF Error All Thro Hole Components • ZULU Telemetry • 10 Channel Telemetry • 10 LED Outputs • 2 Analogue RF Links • 2 Analogue Outputs ZULU Modem • RS232 Modem • USB Modem The Evaluation boards are sold as a TX and RX PCB pair, ready for component population. Schematics are shown below, not all components are fitted for each of the projects. Part No Description ZULU-EVAL Tx and RX PCB Pair PSU-12V1-UK Plugtop Power Supply 12V 100mA DS-ZULU Modem-1 ZULU Modem Zulu Evaluation Board Transmitter Schematic DS-ZULU Modem-1 ZULU Modem Zulu Evaluation Board Transmitter PCB Layout QTY Reference 1 6 2 1 4 1 1 1 1 2 2 1 1 1 1 1 4 2 2 1 1 1 11 3 10 1 1 3 2 1 ANT1 C1-6 C7,9 C8 C10-13 C14 C15 C16 C17 C18-19 D1,D3 D2 D4 IC1 IC2 J1 LK1-4 LK5-6 LK10-11 M1 M2 R1-2 R3-12,15 R16-18 S1-10 S13 SK1 TB1-3 VR1-2 Y1 DS-ZULU Modem-1 Part Name ANT_SCRTM4RA,ANTENNA CAP_254MM_RAD,100n CAP-254-TH CAP-254-TH CAP_254MM_RAD,100n CAP_254MM_RAD,1u CAP_254MM_RAD,33pF CAP_254MM_RAD,100pF CAP_254MM_RAD,2.2uF CAP_254MM_RAD,10pF LED3MM-TH,RED LED3MM-TH,GREEN 1N4007-DO-41 LM3940IT-3.3-TO-220 FT232RL-SSOP-28 DCON9F HEADER-1X2PIN SIP-3P HEADER_8_2X4_TH ZULU-M or ZULU-T MAX232-PDIP-16 RES-1/4W,2k2 RES-1/4W,10K RES-1/4W,360R LRN_BTN_TH LRN_BTN_TH USB_"B"_CON_TH,USB SCR_TER2W VRES-TOP-ADJ-TH-3306F XTAL1,30MHZ Description Farnell Part 9 PIN D-TYPE FEMALE 1 X 2 PIN HEADER, 0.1" CENTERS 1 X 3 PIN HEADER 2 X 2 PIN HEADER FEC109-6142 FEC114-1775 FEC171-2584 FEC969-3238 FEC114-1775 FEC969-3238 FEC114-1761 FEC114-1775 FEC184-8563 FEC114-1756 FEC100-3390 FEC100-3199 FEC165-1091 FEC949-4553 FEC114-6032 FEC109-9294 FEC182-2168 FEC182-2168 FEC124-8134 MAX232 RS 232 Driver IC RES BODY:100 CENTERS:500 RES BODY:100 CENTERS:500 RES BODY:100 CENTERS:500 FEC938-6904 FEC934-1536 FEC934-1110 FEC934-1790 USB 'B' CON. 2 Way Screw Terminal 5mm pitch 10kR 30MHZ FEC168-9844 FEC184-2247 LIGHT EMITTING DIODE LIGHT EMITTING DIODE ZULU Modem Zulu Evaluation Board Receiver Schematic DS-ZULU Modem-1 ZULU Modem Zulu Evaluation Board Receiver PCB Layout QTY 1 11 2 1 1 1 2 13 1 1 1 1 1 Reference ANT1 C1-6,C10-13,C16 C7,9 C8,14 C15 C17 C18-19 D1-10, 14-15 D13 D16 IC1 IC2 J7 4 LK1-4 1 1 1 1 1 3 13 1 1 3 1 LK5 LK10-11 M1 M2 Q1-2 R1-3 R4-13, 16-18 S1 SK1 TB1-3 Y1 DS-ZULU Modem-1 Part Name SCRTM4RA CAP-1uFX7R CAP-47uF25V-EL CAP-1uF250V-EL CAP-33pF-CER CAP-2UF2-160VEL CAP-10PF-CERA LED3LP-GRN LED-3-LP-RED 1N4007 LM3940IT-3.3-TO-220 IC-RT232RL CON-DB9F HEADER-1X2PIN SIP-3P HEADER_8_2X4_TH ZULU-M or ZULU-T MAX232-PDIP-16 TIP122 RES-FR4-10K-1 RES-1/4W,360R LRN_BTN_TH USB_"B"_CON_TH,USB SCR_TER2W XTAL1,30MHZ Description Antenna Mount 0.1uF, 25V 47uF, 25Vdc 1uF 35V 33pF 2.2uF 10pF LED LED FT232RL-SSOP-28 9 PIN D-TYPE FEMALE 1 X 2 PIN HEADER, 0.1" CENTERS 1 X 3 PIN HEADER 2 X 2 PIN HEADER MAX232 RS 232 Driver IC NPN DARLINGTON,TO220AB 10K 360R Learn Button USB 'B' CON. 2 Way Screw Terminal 5mm Pitch CRYSTAL FEC1842247 Farnell Part FEC109-6142 FEC114-1775 FEC171-2584 FEC969-3238 FEC114-1761 FEC184-8563 FEC114-1756 FEC100-3199 FEC100-3390 FEC165-1091 FEC949-4553 FEC114-6032 FEC109-9294 FEC182-2168 FEC182-2168 FEC124-8134 FEC938-6904 FEC980-4021 FEC934-1110 FEC934-1790 FEC184-2247 ZULU Modem 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-ZULUModem-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. 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