MaxStream 9XTREAM User Manual manual

MaxStream Inc. manual

Contents

Revised users manaual

9Xtream
Frequency Hopping Data Radio
CDH Communications
1206 S. 1680 W.
Orem, UT 84058
Phone: (801) 765-9885
Fax: (801) 765-9895
http://www.cdhcommunications.com
CDH Communications
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CDH Communications
1206 S. 1680 W.
Orem, UT 84058
Phone: (801) 765-9885
9Xtreme Frequency Hopping Data Radio
FCC Compliance Warning:
Changes or modifications to the 9Xtreme Data Radio not expressly approved by CDH
Communications, Inc. could void the user’s authority to operate this product.
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 receiver.
• Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
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.
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Introduction
The 9XTREAM-192/96 radio is a 100-milliwatt frequency hopping wireless modem that
communicates with other equipment using a standard 19200 or 9600 baud asynchronous
serial data stream. The radio is half-duplex and can sustain close to a continuous data
stream at the specified data rate. The 9XTREAM operates within the 900 MHz ISM Band
under Part 15 of the FCC Rules and Regulations.
Caution: If this radio is integrated into another product, the system integrator must make
sure that the FCC label is visible from the outside of the final product, or that the
external label provided with this device is placed on the outside of the final product. The
system integrator may only use antennas that have been tested and approved with this
radio to maintain the FCC approval. If a system integrator uses a non-approved antenna
they are responsible for obtaining their own FCC certification. The radio also requires
+5V source voltage. Any voltage higher than 5.5V will damage the radio.
Approved Antennas
Mfr Model Freq Gain Type Connector Dimensions
Astron AXQ900
PTL 902-928 2dBi Omni MMCX 3”
Astron AXH900 RP
SMA R 902-928 2dBi Omni Reverse
Polarity SMA 6.5”
CDH 900CDAN 902-928 2dBi Omni Integrated 3”
Caution: The 9XTREAM has been certified as a mobile device as per FCC Section
2.1091. In order to comply with the FCC RF exposure requirements the 9XTREAM must
be installed with the antennas listed above and a minimum separation distance of 20 cm
must be maintained from the antenna to any near by persons. If the OEM integrates the
9XTREAM into their final product, where the final product is classified as a portable
device per FCC Section 2.1093 (less than 20 cm separation distance between the antenna
to any near by persons). The OEM is responsible for obtaining a separate authorization
on the final product.
The Radio uses an asynchronous serial interface with a start bit, stop bit and eight (8)
data bits at TTL levels for communicating with the host system. Using an RS232 driver
chip (such as a Maxim MAX232) the Radio can communicate directly to a standard
Serial Communications Port on a PC. See the section titled Demo Kit Instructions for a
tutorial to help get started using the 9Xtreme Radio.
9Xtreme Features:
• Frequency Hopping Spread Spectrum (FHSS) technology
• Secure over the air data encryption
• Resistant to noise and interference.
• 100mW transmit power
• Up to 25 mile (40 Kilometer) effective range (line of sight, 9600 baud)
• Broadcast (promiscuous) networking protocol – data sent to the RX pin on one radio
will be presented out of the TX pin of the serial port on all other radios that are within
range and have the same network identifier code.
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Connections
The Data Radio is connected to a host device using the 11 pin and the 4 pin berg headers.
These connections provide the radio with the required DC power source (+5V) and allow
the Data Radio to be configured and provide the I/O lines for the asynchronous line level
(TTL) RS-232 connection.
J1 PIN DESCRIPTIONS
J1-1 CTS Clear to send flow control (output)
J1-2 INT1 Interrupt line to radio processor (input, not currently implemented)
J1-3 TX Asynchronous data output (data going from radio to user)
J1-4 RX Asynchronous data input (data going from user to radio)
J1-5 RTS Ready to send flow control (input, not currently implemented)
J1-6 *RESET Reset line to radio processor (assert low to reset radio processor)
J1-7 MOSI SPI data in (input, not currently implemented)
J1-8 MISO SPI data out (output, not currently implemented)
J1-9 SCK SPI data clock (input/output, not currently implemented)
J1-10 Power +5 volts DC. (55mA in RX mode, 200mA in TX mode)
J1-11 Ground
J2 PIN DESCRIPTIONS
J2-1 Ground
J2-2 Ground
J2-3 Ground
J2-4 Ground
Antenna Connection
Female MMCX
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Operating States
Scanning
When the radio is neither transmitting nor receiving, it is continually scanning for
valid transmissions. From the Scanning state the radio can either transmit, if data is
presented on the serial port; or receive, if data is presented over the air. The radio will
return to scanning when data is no longer present either on the air or on the serial port, or
if a receive error is detected.
Transmitting
When data is presented to the serial port, the radio must first initialize the RF link;
it will then send the incoming data over the air. Initialization of the link takes
approximately 50 milliseconds (ms), this is the latency between the transmitter receiving
data through the serial port, and the receiver transmitting data out the serial port. During
this time, all receivers within range will sync up with the transmitter. While the RF
channel is being initialized, the radio can buffer up to 48 characters before it must stop
receiving characters. The radio will assert the CTS control line when approximately 32
characters have been received to notify the sending device to stop sending data. This
assertion point was chosen to accommodate PC’s with FIFO serial ports that can buffer
up to 16 characters and sends these characters even after CTS assertion.
After initialization, the radio will start to send any buffered data. Data is sent in
packets up to 32 bytes long. As soon as the radio starts sending a packet the CTS line is
de-asserted and more data can be sent to the radio. At this point as long as data is
continuously sent to the radio there should be very little if any assertion of CTS and data
can be continuously sent to the radio.
Data is sent in what could be considered raw mode. Meaning no CRC or check
sum is appended to the data packet. Also no attempt is made to verify whether the packet
was received (no acknowledgement). Checks that are made on a packet to verify it is a
good include: 1) a 16-bit network identifier that is used so that multiple networks or
radios can operate in the same vicinity, 2) a byte count of the packet length, 3) extensive
checking of bits to make sure they are valid.
Due to this raw mode it is suggested that the data sender use a check sum or CRC
and acknowledgement from the receiving radio to verify data transmission.
Receiving
When a scanning radio detects a valid transmission, the radio is locked in receive
mode until no more data is detected or a receive error occurs. This means that this radio
will not be able to transmit any incoming data until it returns to scanning mode. It is
important to note that all radios within range of a transmitter and with the same network
address will receive the transmission and send it out their serial ports. Any networking or
addressing will be handled outside of the radio, this is called a Broadcast, or Transparent
protocol.
After the radio is in receive mode it will receive a packet and transmit it out the
serial port. A packet will be rejected if: 1) the network identifier is incorrect, 2) the byte
count is incorrect or 3) there is a bit error in the data packet. A packet that is rejected is
discarded and is not sent to the serial port.
If there are gaps in receiving data the receiver automatically returns to scanning
mode. If the receiver has buffered data coming in the serial port this data will be sent
after the radio returns to scanning mode.
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Specifications
Frequency Range: 902 to 928 MHz ISM Band
Radio Power Source: 5 VDC 200mA
Demo Kit Power Source: 6-15 VDC 200mA
Antenna Impedance: 50 Ohms unbalanced
Antenna Connection: MMCX female
Operation Mode: Frequency Hopping Spread Spectrum
Sensitivity: -109 dBm
Selectivity: 70 dB at pager and cellular frequencies
FCC Compliance: Part 15
Transport Protocol: Transparent
Data Interface: Asynchronous Serial TTL
RF Data Rate: 10,000 bps or 20,000 bps
Data Interface Rates: 9600 or 19,200 bps
Data Protocol: 8 data bits, no parity, 1 stop bit, hardware
handshaking, transparent networking.
Operating Temperatures: -40°C to 70°C, (-40°F to 185°F)
Size: 1.6 in. x 2.7 in. x .35 in.
IMPORTANT: This device operates with a modular transmitter that must satisfy FCC RF
exposure compliance requirements for mobile transmitting devices. The antenna of this
device (modular transmitter) must be installed and operated with a separation distance of
20 cm or more from persons to satisfy the RF exposure requirements. Operations that do
not meet these requirements must be avoided.
Warranty
The 9XTREAM radio from CDH Communications is warranted against defects in
materials and manufacturing for a period of 90 days from the date of purchase. In
the event of a product failure due to materials or workmanship, CDH
Communications will repair or replace the defective product. For warranty service,
return the defective product to CDH for prompt repair or replacement.
CDH Communications, its suppliers, and its licensors shall in no event be liable for
any damages arising from the use of or inability to use this product. This includes
business interruption, loss of business information, or other losses that may arise
from the use of this product.
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Using the 9Xtream Demo Kit
Introduction:
Use this demo kit to experience the power and sensitivity of
the CDH 9XTREAM radio. This radio transmits data at 19200
bits per second in the license-free 900MHz ISM band. See how
simple it is to communicate with the radio using asynchronous
serial communications by following the instructions below.
Contents:
2 9XTREAM Frequency Hopping radios
2 Demo Boards
2 9VDC adapters
2 DB-9 connecting cables
1 Null modem adapter
1 3.5" floppy disk containing file RAT.TXT
Requirements:
2 computers with an available comm port and Windows 95/98
or NT.
Instructions:
1. Assemble and Connect Demo Boards to computers.
a. Connect the radios to the Demo Boards by fitting the 4
and 11-pin connectors into their respective female
headers.
b. Attach the male sides of one of the DB-9 Connecting
Cables to the female DB-9 jacks on the Demo Boards.
c. Attach the female side of a DB-9 connecting cable to an
available comm port on the back of Computer 1.
Connect Radio 2 to Computer 2 in the same fashion.
d. Plug Battery clips into the Demo Boards. The green
LEDs on the Demo Boards will illuminate to show the
boards are powered.
e. Refer to figure 1 for completed assembly.
2. Run and configure HyperTrm.exe on both computers
a. Open the folder on the Start Menu found under
Programs -> Accessories -> Communications ->
HyperTerminal.
b. Double-click on the application HyperTrm.exe and
choose a name and an icon for the new connection in
the Connection Description dialogue box.
c. In the Connect To dialogue box on each computer,
select Connect using: Direct to Com1 or Direct to
Com2 to correspond with the comm port used on the
respective computers (see figure 2) . Click OK.
d. In the COM Properties dialogue box, set the
following: Bits per second: 19200; Data bits: 8; Parity:
None; Stop Bits: 1 and Flow Control: Hardware (See
figure 3). Click OK.
e. Both computers are now set up and ready to
communicate.
Figure 1– Demo Kit
Figure 2 –Connect To Dialogue
Box
Figure 3 – COM Properties
Dialogue Box
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3. Test Connection
a. Place cursor in HyperTerminal window of Computer 1 and type a message. Notice that
text appears only in the window of Computer 2 and text typed on Computer 2 appears
only on Computer 1. This text is being transferred over the air by the CDH 9Xtream
radios.
b. Transfer the file RAT.TXT
i. On Computer 1: Select Transfer menu -> Send File(or try right-clicking in the
HyperTerminal window). Insert the disk into the A: drive and enter Filename:
A:\RAT.TXT Select Protocol: Ymodem (See figure 4). Press Send.
ii. On Computer 2: Select Transfer menu -> Receive File. Select a folder in which
to place the file and select Protocol:
Ymodem (see figure 5). Press Receive.
iii. The file will begin to transfer and any errors
or retries will be accounted for. Touch the
antennas and move the radios around to
notice that errors or retries do occur under
certain circumstances.
iv. When the transfer completes, open
RAT.TXT on Computer 2 and observe the
pattern of text, it will be easy to see if any
characters were lost or corrupted.
v. Any file can be transferred this way. Use
either Xmodem or Ymodem protocol. Both
computers must have the same settings.
c. Try range testing by distancing the two computers
from each other. The radios can send and receive data
over 20 miles line of sight.
4. Problems (Trouble Shooting)
a. Can’t find the HyperTerminal on your computer?
i. Search your hard drive for HyperTrm.exe
ii. Download a free version from http://www.hilgraeve.com
b. Power LED doesn’t illuminate when battery clip is attached?
i. Replace the battery.
c. Cannot connect to the comm port or communication not working?
i. Try selecting another comm port by selecting Properties under the File menu.
ii. If necessary test the comm ports with a null modem cable (cross RX and TX)
between the two computers to verify operation of comm ports.
d. Some characters come through but not all?
i. Verify that both comm ports are set to 19200 bits per second.
Figure 4 – Send File Dialogue
Box
Figure 5 – Receive File
Dialogue Box

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