Xeta7m-T
User Manual
Table of
Contents
Warranty ............................................................................................................................. 1
FCC Notifications ................................................................................................................. 2
Installation and configuration ............................................................................................. 5
Xeta7 Installation ............................................................................................................ 5
Communicating with the XETA7 using a serial interface terminal ................................. 8
Configuring the XETA7 module ....................................................................................... 9
LED Display .................................................................................................................... 11
i
Warranty
XetaWave LLC warrants your XetaWave wireless data transceiver against defects in
materials and manufacturing for a period of two years from the date of purchase. In the
event of a product failure due to materials or workmanship, XetaWave will, at its
discretion, repair or replace the product.
In no event will XetaWave LLC, its suppliers or its licensors, be liable for any damages
arising from the use of or the inability to use this product. This includes business
interruption, loss of business information, or other loss which may arise from the use of
this product. XetaWave LLC transceivers should not be used in situations where failure
to transmit or receive data could result in damage of any kind to the user or any other
party, including but not limited to personal injury, death, or loss of property. XetaWave
LLC accepts no responsibility for damages of any kind resulting from delays or errors in
data transmitted or received using the XetaWave transceiver, or for the failure of such
transceiver to transmit or receive such data.
Warranty policy may not apply:
1) If product repair, adjustments, or parts replacements is required due to
accident, neglect or unusual physical, electrical or electromagnetic stress.
2) If product is used outside of XetaWave specifications.
3) If product has been modified, repaired or altered by Customer unless XetaWave
specifically authorized such alterations in each instance in writing.
The warranty period begins from the date of shipment and is defined per the standard
warranty policy stated above.
Information in this document is subject to change without notice. The information
contained in this document is proprietary and confidential to XetaWave LLC. This
manual is for use by purchasers and other authorized users of the XetaWave wireless
data transceiver only.
No part of this document may be reproduced or transmitted in any form or by any
means, electronic or mechanical, or for any purpose without the express written
permission of XetaWave LLC.
This product is licensed by the United States. Diversion contrary to U.S. law is
prohibited. Shipment or re-export of this product outside of the United States may
require authorization by the U.S. Bureau of Export Administration. Please contact
XetaWave LLC for assistance and further information.
1
FCC
Notifications
Federal Communications Commission
This device complies with Title 47 CFR § Part 27 of the federal code. Specifically, 47CFR §
1.1310, Table 1, Limits for General Population/Uncontrolled Exposure.
This device must be operated as supplied by XetaWave LLC. Any changes or
modifications made to the device without the express written approval of XetaWave LLC
may void the user’s authority to operate the device, pose violations and liabilities.
Caution
The model number Xeta7M-T has a maximum transmitted output power of 35 dBm
when used in the 757-758MHz and 787-788MHz bands. The transmit antenna shall be
kept at least 82 cm from physical space where humans may exist.
Additional details may be found in the “RF Exposure Calculations” at the end of this
section.
These limits are designed to provide reasonable protection against harmful 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, 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:
1) Reorient or relocate the devices and/or antennas.
2) Increase the separation between the equipment and the receiver.
3) Connect the equipment to an outlet on a circuit different from that to which the
receiver is connected.
4) Consult the dealer or an experienced RF/radio/Electronics professional for help.
2
NOTE TO OEMS:
For host manufacturer’s when using a certified module, the following must be adhered
to:
1. If (1) the module’s FCC ID is not visible when installed in the host, or (2) if the
host is marketed so that end users do not have straightforward commonly used
methods for access to remove the module so that the FCC ID of the module is
visible; then an additional permanent external label referring to the enclosed
module: “Contains Transmitter Module FCC ID: PEJ-XKJS7” or “Contains FCC ID:
PEJ-XKJS7” must be used.
2. The host OEM user manual must also contain clear instructions on how end
users can find and/or access the module and the FCC ID.
\
WARNING
These radio systems shall be installed by a RF/radio professional familiar with the
applicable rules. Installation of all antennas shall be performed in a manner that will
provide at least the MPE Distance from the direction of maximum radiation, to any user
or member of the public and consistent with the settings in the applicable antenna
installation compliance section below.
3
2
/(4
)(
cmmWmtExposureLi
nAntennaGaiDutyCyclemWowerConductedP
MPED
FCC antenna compliance
Since professional installation is required, standard RF connectors are used. Adapters or
custom coaxial cables may be required to connect the radio output connector to the
desired antenna.
Any antenna from a reputable manufacturer with desired bandwidth, gain/pattern
coverage, and have an input surge impedance of approximately 50 ohms can be used.
Maximum antenna gain of 11dBi in both the 757-758MHz and the 787-788 MHz bands.
Exposure Compliance
FCC ID: PEJ-XKJS7
It is the responsibility of the licensee or user to guarantee compliance with the
appropriate MPE regulations when operating this device in a way other than described
herein. The installer of this equipment must ensure the antenna is located or oriented
such that it does not emit an RF field in excess guidelines as posted in the 47 CFR
Bulletin 65/47CFR § 1.1310 of the Federal Communications Commission, or the Council
of European Union as appropriate.
The XetaWave XETA7 uses a low power radio frequency transmitter. The concentrated
energy from an antenna may also pose a health hazard in the near field. People should
not be near the antenna when the radio link is operating as general practice and
maintain a safe distance as calculated below.
The following calculations are based off the Maximum Permissible Exposure
requirements as outlined by the FCC.
The MPED (Maximum Permissible Exposure Distance) is calculated based on the limits
for a General Population/Uncontrolled Exposure in the 300-1500 MHz frequency band
using the stated MPE power density limit of F/1500 mW/cm
/Uncontrolled environment. To calculate safe distance:
Equation 2:
Where: MPED is Maximum Permissible Exposure Distance or safe distance in cm
All quantities are calculated in linear or numeric quantities.
Duty cycle is set using packet sizes for master and slave. Packet sizes are set in the radio
Network Configuration Menu. At Power up and with no data transmitting, the radios
2
for General population
4
Table of MPE Safe Distance vs. Antenna Gain and Power Output Setting
Power Out
Setting
(mW)*
Duty
Cycle
(linear)
Antenna
Gain
(dBi)
Antenna
Gain
(linear)
FCC MPE
Limit
(mW/cm2)
Safe
Distance
(cm)
3388.4338
1.0
11.0
12.7
F/1500
82
will transmit or beacon with a duty cycle of 6 to 10% depending upon modulation
setting.
The worst case exposure limit MPED for 757MHz is shown in the table below.
Installation and configuration
Xeta7 Installation
The XETA7 is a board level radio that is intended to be integrated into a customer
package. As such the antenna placement must be done in a manner that is in
compliance with all local regulations.
All transceivers sold under the FCC ID PEJ-XKJS7 must be installed professionally. This
transceiver is only approved for use when installed in devices produced by Xetawave LLC
or third party OEMs approved by Xetawave LLC.
Antenna Installation
Any antenna from a reputable manufacturer with desired bandwidth, gain/pattern
coverage, and have an input surge impedance of approximately 50 ohms can be used
with the Xeta7. Since professional installation is required, standard RF connectors are
used. Adapters or custom coaxial cables may be required to connect the radio output
connector to the desired antenna, provided the appropriate requirements are met.
Mechanical Interface:
The XETA7 has four mounting holes located 0.100 inches from the outside edge of the
board as seen below:
5
RF Shield
23 24
21 22
…
5 6
3 4
1 2
Header Pin Assignments
The four mounting holes have a 0.093” diameter finished opening 0.100” from the
edges designed for a #2-56 screw. The clearance height of the radio is 0.210” shield
height, .103” PCB height, 0.070” back side height. (The connectors are on the side with
the shield.)
Heat Sink contact is on the opposite side of the connectors/shield at the lower left
corner (back side as shown above).
Electrical power/signal interface:
Header assignment: 24-pin 2-row Samtec part MTMM-112-05-L-D-159
GPIO :23 24: GPIO
GPIO :21 22: GPIO
Sig GND :19 20: Baud Clk
Diag RX :17 18: Diag TX
Data RTS :15 16: Data CTS
Data RX :13 14: Data DCD
Data TX :11 12: RSSI (option)
Data DTR :9 10: Power GND
Power IN :7 8: DNC
DNC :5 6: GPIO_HS
DNC :3 4: DNC
DNC :1 2: DNC
Note: rows are reversed compared to standard nomenclature.
6
Radio
Ribbon Pin Out
23
24
21
22
…
3
4
1
2
This means that when a 24 pin connector is used
to attach a ribbon cable, the pins will be staggered
in a non-conventional way.
The radio pin out may be connected to two DB9 connectors according to the
following pin diagram:
Depending upon configuration, before connecting to a computer, each serial port
may need to pass through a 3.3V TTL to RS232 converter such as this SerialComm
TTL-232-33P. The radio is either manufactured for a high speed 3.3V interface or
for a conventional speed RS-232 interface.
7
spi_init(SPI_BUS_0)
spi_init(SPI_BUS_1)
twi_init()
iox_init()
pll_init(TRUE)
interrupt_init()
timer_init()
mon_init()
Xetawave Bootloader revision 1.17.1410 for rev 5 board
Booting . . .
spi_init(SPI_BUS_0)
spi_init(SPI_BUS_1)
In order to power the radio, 7.5V +/- 10% DC must be applied across pins 7 and 10.
Communicating with the XETA7 using a serial interface terminal
Bits per Second (Baud): 115200
Data Bits: 8
Parity: None
Stop Bits: 1
Flow Control: None
The computer’s serial port must be configured by the user to match this configuration to
communicate. Once the radio is connected to the computer, power may be applied to
the radio resulting in the following initialization or boot sequence information being
displayed on the terminal:
8
twi_init()
iox_init()
pll_init(TRUE)
interrupt_init()
timer_init()
if_init()
synth_init()
params_load()
sport_init(SPORT_BUS_0)
sport_init(SPORT_BUS_1)
daca_init()
dac_init()
recv_init()
xmit_init()
crc_init()
math_rand_set_seed(params.serial_number)
ecc_init()
pwm_init()
watchdog_init()
mon_init()
Serial Ports: Data=921600:8N1; Diag=115200:8N1;
Starting . . .
Configuring the XETA7 module
The minimal steps to configure a radio are:
1) Verify and/or configure the serial port speeds (both diagnostics and data ports)
2) Configure the radio for network operation:
a. Master, Repeater, or Slave (one master per network)
b. Network operation of “point-to-point” or “point-to-multipoint”
c. Network address that is shared by all radios on the network
d. Radio address of this radio (“1” if master)
e. Address of radio upstream (closer to the Master)
f. Address of radio downstream (farther from the Master)
g. Set the data block size sent downstream and upstream
3) Set the RF data rate speed and modulation method
4) Set the transmit power
5) Set the distance between the radios for worst case propagation delay.
9
Once communication with the Xeta7 has been established using the serial
communications interface, the standard menu based prompt will be displayed. Using
this interface, the radio can be controlled and the following parameters can be
configured:
Operation Reference Map
0: Main Configuration Menu
0: Serial Menu
0: Set Data Serial Bit Rate
1: Set Data Serial Framing
2: Set Data Serial Protocol
3: Set Baud Clock Multiplier
4: Set Data Serial flow control
5: Set Serial message delay
6: Set Data Serial interface (RS232, 422, 485)
7: Set RS485 after delay
8: Set RS485 before delay
9: Set seamless group
1: RF and Hopping Menu
0: RF Band (Fixed)
1: Set Maximum separation
2: Set RF Transmit Power
3: Set RF Master Transmit Frequency
4: Set RF Slave Transmit Frequency
2: Bit Rate and Modulation type Menu
0: Toggle between data rates and modulation methods
3: Network Menu
0: Set Operating Mode (Master; Slave; Repeater)
1: Set Network Type (M to S; M to R to S; M to xS)
2: Set Network Address (unique 9-digit value)
3: Set Upstream Device Address
4: Set Downstream Device Address
5: Set Maximum Payload Size, Master
6: Set Maximum Payload Size, Slave
7: Set Device Address
8: Set Radio name
4: Advanced Menu
0: Set Multi-master sync mode
1: Set Idle beacon period
2: Toggle Dynamic payload mode
5: Utilities Menu
10
0: Scan RF Band
1: Download Firmware Update
2: Scan Network (for information on other radios in the network)
3: Ping a radio on the network
4: Run throughout test
5: Show throughput statistics
r: restore factory defaults
LED Display
The radio board has 4 LEDs mounted near the edge that indicate: power applied,
transmit in progress, receive in progress, and a spare for special use.
11
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