CalAmp. warrants that each product will be free of defects in material and workmanship for a period of one (1) year for its products. The warranty commences on the date the product is shipped by CalAmp. CalAmp’s sole liability and responsibility under
this warranty is to repair or replace any product which is returned to it by the Buyer and which CalAmp. determines does not
conform to the warranty. Product returned to CalAmp. for warranty service will be shipped to CalAmp. at Buyer’s expense and
will be returned to Buyer at CalAmp.’s expense. In no event shall CalAmp. be responsible under this warranty for any defect
which is caused by negligence, misuse or mistreatment of a product or for any unit which has been altered or modified in any
way. The warranty of replacement shall terminate with the warranty of the product.
Warranty Disclaims
CalAmp. makes no warranties of any nature of kind, expressed or implied, with respect to the hardware, software, and/or products
and hereby disclaims any and all such warranties, including but not limited to warranty of non-infringement, implied warranties of
merchantability for a particular purpose, any interruption or loss of the hardware, software, and/or product, any delay in pro- viding
the hardware, software, and/or product or correcting any defect in the hardware, software, and/or product, or any other
warranty. The Purchaser represents and warrants that CalAmp. has not made any such warranties to the Purchaser or its agents
CALAMP. EXPRESS WARRANTY TO BUYER CONSTITUTES CALAMP. SOLE LIABILITY AND THE BUYER’S SOLE
REMEDIES. EXCEPT AS THUS PROVIDED, CALAMP. DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PROMISE.
CALAMP. PRODUCTS ARE NOT DESIGNED OR INTENDED TO BE USED IN ANY LIFE SUPPORT
RELATED DEVICE OR SYSTEM RELATED FUNCTIONS NOR AS PART OF ANY OTHER CRITICAL SYSTEM AND ARE GRANTED NO FUNCTIONAL WARRANTY.
Indemnification
The Purchaser shall indemnify CalAmp. and its respective directors, officers, employees, successors and assigns including any
subsidiaries, related corporations, or affiliates, shall be released and discharged from any and all manner of action, causes of
action, liability, losses, damages, suits, dues, sums of money, expenses (including legal fees), general damages, special damages,
including without limitation, claims for personal injuries, death or property damage related to the products sold hereunder, costs
and demands of every and any kind and nature whatsoever at law.
IN NO EVENT WILL CALAMP. BE LIABLE FOR ANY INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL, BUSINESS INT ERRUPTION, CATAST ROPHIC, PUNITIVE OR OTHER DAMAGES WHICH MAY BE CLAIMED TO ARISE IN
CONNECTION WITH THE HARDWARE, REGARDLESS OF THE LEGAL THEORY BEHIND SUCH CLAIMS, WHETHER
IN TORT, CONTRACT OR UNDER ANY APPLICABLE STATUTORY OR REGULATORY LAWS, RULES,
REGULATIONS, EXECUTIVE OR ADMINISTRATIVE ORDERS OR DECLARATIONS OR OTHERWISE, EVEN IF
CALAMP. HAS BEEN ADVISED OR OTHERWISE HAS KNOWLEDGE OF THE POSSIBILITY OF SUCH DAMAGES
AND TAKES NO ACTION TO PREVENT OR MINIMIZE SUCH DAMAGES. IN THE EVENT THAT REGARDLESS OF
THE WARRANTY DISCLAIMERS AND HOLD HARMLESS PROVISIONS INCLUDED ABOVE CALAMP. IS SOMEHOW HELD LIABLE OR RESPONSIBLE FOR ANY DAMAGE OR INJURY, CALAMP.'S LIABILITY FOR ANYDAMAGES SHALL NOT EXCEED THE PROFIT REALIZED BY CALAMP. ON THE SALE OR PROVISION OF THE HARDWARE TO THE CUSTOMER.
Proprietary Rights
The Buyer hereby acknowledges that CalAmp. has a proprietary interest and intellectual property rights in the Hardware, Software and/or Products. The Purchaser shall not (i) remove any copyright, trade secret, trademark or other evidence of CalAmp.’s
ownership or proprietary interest or confidentiality other proprietary notices contained on, or in, the Hardware, Software or Products, (ii) reproduce or modify any Hardware, Software or Products or make any copies thereof, (iii) reverse assemble, reverse
engineer or decompile any Software or copy thereof in whole or in part, (iv) sell, transfer or otherwise make available to others
the Hardware, Software, or Products or documentation thereof or any copy thereof, except in accordance with this Agreement.
When operating at elevated temperature extremes, the surface may exceed +70 Celsius. For user
safety, the Viper should be installed in a restricted access location.
WARNING — EXPLOSION HAZARD, do not connect while circuit is live unless area is known to be
non-hazardous.
Important User Information (continued)
About This Manual
It is assumed that users of the products described herein have either system integration or
design experience, as well as an understanding of the fundamentals of radio communications.
Throughout this manual you will encounter not only illustrations (that further elaborate on the
accompanying text), but also several symbols which you should be attentive to:
Caution or Warning
Usually advises against some action which could result in undesired or
detrimental consequences.
Point to Remember
Highlights a key feature, point, or step which is noteworthy. Keeping
these in mind will simplify or enhance device usage.
Tip
An idea or suggestion to improve efficiency or enhance usefulness.
Information
Information regarding a particular technology or concept.
UL Listed Models Only
For more information see APPENDIX F — UL Installation Instructions
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.
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.
Important User Information (continued)
Regulatory Requirements
To satisfy FCC RF exposure requirements for mobile transmitting devices, a separation
distance of 23cm or more should be maintained between the antenna of this device and
persons during device operation. To ensure compliance, operations at closer than this
WARNING
WARNING
WARNING
WARNING
SAMPLE LABEL REQUIREMENT:
distance is not recommended. The antenna being used for this transmitter must not be
co-located in conjunction with any other antenna or transmitter.
This device can only be used with approved Antennas. Please contact CalAmp if you
need more information or would like to order an antenna.
MAXIMUM EIRP
FCC Regulations allow up to 36dBm Effective Isotropic Radiated Power (EIRP).
Therefore, the sum of the transmitted power (in dBm), the cabling loss and the antenna
gain cannot exceed 36dBm.
EQUIPMENT LABELING
This device has been modularly approved. The manufacturer, product name, and FCC
and Industry Canada identifiers of this product must appear on the outside label of the
end-user equipment.
For Phantom II
Please Note: These are only sample labels; different products contain different identifiers. The
actual identifiers should be seen on your devices if applicable.
CSA Class 1 Division 2 is Available Only on
Specifically Marked Units
If marked this for Class 1 Division 2 – then this product is available
for use in Class 1, Division 2, in the indicated Groups on the product.
In such a case the following must be met:
The transceiver is not acceptable as a stand-alone unit for use in
hazardous locations. The transceiver must be mounted within a
separate enclosure, which is suitable for the intended application.
Mounting the units within an approved enclosure that is certified for
hazardous locations, or is installed within guidelines in accordance
with CSA rules and local electrical and fire code, will ensure a safe
and compliant installation.
The antenna feed line; DC power cable and interface cable must be
routed through conduit in accordance with the National Electrical
Code.
Do not connect or disconnect equipment unless power has been
switched off or the area is known to be non-hazardous.
Installation, operation and maintenance of the transceiver should be
in accordance with the transceiver’s installation manual, and the
National Electrical Code.
Tampering or replacement with non-factory components may
adversely affect the safe use of the transceiver in hazardous
locations, and may void the approval.
The wall adapters supplied with your transceivers are NOT Class 1
Division 2 approved, and therefore, power must be supplied to the
units using the screw-type or locking type connectors supplied from
CalAmp. and a Class 1 Division 2 power source within your panel.
If you are unsure as to the specific wiring and installation guidelines
for Class 1 Division 2 codes, contact CSA International.
1.1 Performance Features ............................................................................................................................................. 12
2.1 Web Interface............................................................................................................................................................ 14
2.2 Text User Interface .................................................................................................................................................. 16
2.2.3 Serial Configuration ................................................................................................................................... 16
6.1.3 System Configuration .................................................................................................................................38
6.1.5 Radio Configuration ....................................................................................................................................70
6.1.6 COM1 and COM2 Configuration...............................................................................................................90
6.1.7 USB Configuration ................................................................................................................................... 102
6.1.9 System Information.................................................................................................................................. 129
6.1.10 System Tools ............................................................................................................................................ 136
6.1.10.1 System Maintenance............................................................................................................. 137
6.1.10.2 Reboot System ....................................................................................................................... 138
6.1.10.3 Reset System to Default ....................................................................................................... 139
6.1.10.4 Radio Channels Noise Level ................................................................................................ 140
A BRIDGE separates two network
segments within the same logical
network (subnet).
A ROUTER forwards data across
internetworks (different subnets).
A SERIAL GATEWAY allows
asynchronous serial data to enter
(as through a gate) the realm of IP
communications.
The serial data is encapsulated
within UDP or TCP packets.
The Phantom II is a high-performance wireless Ethernet bridge and
serial gateway. Alternately, a Master Phantom II unit may be configured to operate as a wireless Ethernet router (and serial gateway).
When properly configured and installed, long range communications
at very high speeds can be achieved.
The Phantom II operates within the 902-928MHz ISM frequency
band, employing frequency hopping spread spectrum (FHSS) and
also, for 1.2 Mbps operation, digital transmission service (DTS) technology.
They provide reliable wireless Ethernet bridge functionality as well
gateway service for asynchronous data transfer between most equipment types which employ an RS232, RS422, or RS485 interface.
The small size and superior performance of the Phantom II makes it
ideal for many applications. Some typical uses for this modem:
SCADA
Remote telemetry
Traffic control
Industrial controls
Remote monitoring
LAN extension
1.1 Performance Features
Transmission within a public, license-exempt band of the
radio spectrum1 - this means that the modems may be used
without access fees or recurring charges (such as those
incurred by cellular airtime)
Maximum allowable transmit power (1 Watt) - 4 Watts Max
EIRP
Longest range
Transparent, low latency link providing reliable wireless IP/
Ethernet communications with constant baud rate over
distance
1
920-928MHz, which is license-exempt within North America, may need to be
factory-configured differently for other areas: contact CalAmp.
Each unit supports all modes of operation (Master, Repeater,
Remote)
Repeater may also be used concurrently as a Remote unit
Flexible wireless networking: point-to-point, point-to-multipoint,
peer-to-peer, store and forward repeater, layer 2 mesh
Communicates with virtually all PLCs, RTUs, and serial devices
through either one of two available RS232 interface, RS422, or
RS485
Fastest serial rates: 300 baud to 921 kbps
Advanced serial port supports legacy serial devices, including
RTS, CTS, DSR, DTR, and DCD.
Easy to manage through web- or text-based user interface, or
SNMP
Wireless firmware upgrades
System wide remote diagnostics
32-bit CRC, selectable retransmission
Advanced security features
Industrial temperature specifications
DIN rail mountable
Optional Class 1 Div 2
Supporting co-located independent networks and with the ability to
carry both serial and IP traffic, the Phantom II supports not only
network growth, but also provides the opportunity to migrate from
asynchronous serial devices connected today to IP-based devices in
the future.
Spreading Method: Frequency Hopping /DTS
Band Segments: Selectable via Freq. Restriction
Error Detection: 32 bits of CRC, ARQ
Caution: Using a power
supply that does not provide
proper voltage or current may
damage the modem.
Tip: Future enhancements of
the Phantom II products may
require higher current
requirements than listed. It is
good design practice to over
spec pow er supplies to allow
for future design options.
Data Encryption: 128-bit WEP/WPA (Canada & USA only)
-AES - Optional 128/256-bit AES Encryption,
Secure Shell, HTTPS (Canada & USA only)
Range:
Up to 20+ miles @ 1.2 Mbps
Up to 40+ miles @ 345 kbps
Output Power: 100mW to 1W (20-30dBm)
Sensitivity: -101 dBm @ 345 kbps link rate
-97 dBm @ 1.2 Mbps link rate
Serial Baud Rate: 300 bps to 921 kbps
USB: USB 2.0
Ethernet: 10/100 BaseT, Auto - MDI/X, IEEE 802.3
Link Rate: 345 kbps or 1.2 Mbps
Network Protocols: TCP, UDP, TCP/IP, TFTP, ARP, ICMP, DHCP,
HTTP, HTTPS*, SSH*, SNMP, FTP, DNS, Serial
over IP, QoS
To ensure that the Phantom II unit
is at its DEFAULT factory settings,
once it has powered-up and the
Status LED is ON (after 1 minute),
press and hold the front CFG
button for 8 seconds - the Status
LED will initially blink, then be on
solid, and then the unit will reset.
This Quick Start Guide will enable you to promptly establish basic IP
connectivity between a pair of Phantom II modems in a point-to-point
(ref. 5.1) configuration.
Note that the units arrive from the factory with a Radio Configuration
of ‘Remote’ and the Local Network setting configured as ‘Static’ (IP
Address 192.168.1.254, Subnet Mask 255.255.255.0, and Gateway
192.168.1.1).
2.1 Programming Option 1 - Web Interface
2.1.1 Requirements
To Program your Phantom II using the web interface, you will need:
At least (2) two Phantom II (factory configured) with Power
Adapter and Rubber Ducky Antenna. Each factory configured
Phantom II has the following default settings: ‘Remote’ with Local
Network Settings ‘Static’ (IP Address 192.168.1.254, Subnet
Mask 255.255.255.0, Gateway 192.168.1.1)
PC with NIC (Ethernet) card
Ethernet cable. If your PC does not support Auto MDIX, you will
need to use a crossover cable
2.1.2 Device Connections
Connect Rubber Ducky to the antenna port of each Phantom II
Connect power adapters to 120 VAC outlets and to each Phan-
tom II Using an Ethernet cable,
Connect the Phantom II that will be the MASTER device to the
PC NIC
2.1.3 Connecting to the Web Interface
Open a Web Browser and enter the IP Address of the Phantom II
into the URL address line
Press [Enter]
A login window will appear. Enter default user name (admin) and
To program your Phantom II using the text interface, you will need:
At least (2) two Phantom II (factory configured) with Power
Adapter and Rubber Ducky Antenna. Each factory configured
Phantom II has the following default settings: ‘Remote’ with Local Network Settings ‘Static’ (IP Address 192.168.1.254, Subnet
Mask 255.255.255.0, Gateway 192.168.1.1)
PC with NIC (Ethernet) card and COM (serial) port with
HyperTerminal (or equivalent). If your PC does not have a Serial
port, you will need a serial to USB adapter
Diagnostic serial cable (DB9-DB9)
Ethernet cable. If your PC does not support Auto MDIX, you will
need to use a crossover cable
2.2.2. Device Connections
Connect Rubber Ducky to the antenna port of each Phantom II
Connect power adapters to 120 VAC outlets and to each
Phantom II
Using a diagnostic serial cable, connect the DIAGNOSTICS port
of the Phantom II that will be the MASTER device to an available
COM port on the PC
2.2.3 Serial Configuration
Run HyperTerminal (or equivalent terminal program) on the PC
and configure the selected Serial/COM port for 115200 bps, 8
data bits, no parity, 1 stop bit, and no flow control
Activate the HyperTerminal connection. Press [Enter]. A login
prompt will appear
Enter default user name (admin). Press [Enter]
Enter default password (admin). Press [Enter]
View the PC’s NETWORK
SETTINGS (TCP/IP Properties) to
determine an appropriate IP
Address, Subnet Mask, and
Gateway for the Phantom II.
(For basic testing, the Gateway
value is not critical.)
If a connection is being made to a
network (LAN), check with the
Network Administrator for an
available static IP address(es) so
as not to potentially create an IP
address conflict.
2.2.4 Master Configuration
Select [B] Network Configuration
Select [A] Local IP Config
Select [B] Enter IP Address
Select [C] Enter Subnet Mask
Select [D] Enter IP Gateway; Press [Enter]
Press [U] to SAVE the configuration changes
Press [Esc] twice to return to the MAIN MENU
Select [C] Radio Configuration
Select [B] Operation Mode
Select [A] Master
Select [I] Network Type
Select [B] Point-to-Point
Select [J] Destination Unit. Enter the number 20.
Press [Enter]
Press [U] to SAVE the configuration changes
Press [Esc] to return to the MAIN MENU
Remove the Serial connection from the MASTER device
and connect it to the next Phantom II.
Press [Enter] to open the log in prompt
Enter default user name (admin). Press [Enter]
Enter default password (admin). Press [Enter]
Select [B] Network Configuration
Select [A] Local IP Config
Select [B] Enter IP Address
Select [C] Enter Subnet Mask
Select [D] Enter IP Gateway. Press [Enter]
Press [U] SAVE the configuration changes
Press [Esc] twice to return to the MAIN MENU
Select [C] Radio Configuration
Select [F] Unit Address. Enter number 20. Press [Enter]
Select [I] Network Type
Select [B] Point-to-Point
Press [U] to SAVE the configuration changes
Press [Esc] to return to the MAIN MENU
Press [Q] to Quit .
The Phantom II provides a fully enclosed, stand alone modem, requiring only cabled connections. The
Phantom II can be used on a table top like surface, or using the mounting holes provided can be mounted
anywhere for a permanent solution.
Power
Data (Serial) Interface
Ethernet Interface
USB Interface
Indicators
Antenna
Any Phantom II may be configured as a Master, Repeater (or Repeater/Remote), or Remote.
This versatility is very convenient from a ’sparing’ perspective, as well for convenience in becoming very
familiar and proficient with using the module: if you are familiar with one unit, you will be familiar with all units.
On the front of the Phantom II is the USB port, DIAGNOSTIC port, CONFIG Button, and the RSSI,
STATUS, TX and RX LED’s.
Image 3-5: Phantom II Front View
The USB port can be used for:
USB Console Port
USB to Serial Data Routing
USB to Ethernet Data Routing
The Diagnostic port (RS232) is used for:
Text User Interface (local console port) at 115.2
kbps and HyperTerminal (or equivalent).
User data (serial, RS-232, wired for RxD, TxD, and
SG)
CONFIG Button
Holding this button depressed while powering-up the Phantom II will boot the unit into FLASH FILE
SYSTEM RECOVERY mode. The default IP address for system recovery (not for normal access to the
unit) is static: 192.168.1.39. To use this feature, please contact CalAmp for the Phantom II Firmware
Upgrade & Recovery Application Note.”
Table 3-1: Diagnostic Port RS232 Pin Assignment
If the unit has been powered-up for some time (>1 minute), depressing the CFG Button for 8 seconds
will result in FACTORY DEFAULTS being restored, including a static IP address of 192.168.1.254. This
IP address is useable in a Web Browser for accessing the Web User Interface.
TX LED (Red) / RX LED (Green)
When illuminated, the TX LED indicates that the modem is transmitting data over the air and the RX
LED indicates that the modem is synchronized and has received valid packets
Receive Signal Strength Indicator (RSSI) (3x Green)
As the received signal strength increases, starting with the furthest left, the number of active RSSI LEDs
increases. Signal strength is calculated based on the last four valid received packets with correct CRC.
STATUS LED
Upon initial application of power the STATUS LED will be illuminated for approximately 20 seconds,
after which time it will being to blink slowly (loading) for an additional 25 seconds, then stay ON
‗solid‘ (indicating it has achieved its specific operational status).
Caution: Using a power
supply that does not
provide proper voltage
may damage the modem.
3.1.2.2 Rear
On the back of the Phantom II is the Data port, RS485/422 interface, Ethernet port, as well as the power
connections.
Image 3-6: Phantom II Rear View
The DATA (RS232 Port (DCE)) on the rear
of the circuit board is used for:
RS232 serial data (300-921 kbps) when
in DATA MODE, or
for configuring the modem when in
COMMAND MODE.
The RS422/485 Port is used to interface the Phantom II
to a DTE with the same interface type. Either the RS232
or RS422/485 interface is used for data traffic.
Vin+/Vin– is used to power the unit. The input Voltage
range is 7-30 VDC.
A Phantom II may be configured for any operating mode. This is very
convenient for purposes of sparing and becoming familiar with their
configuration menus.
4.1 Master
One per network, the source of synchronization for the system. The
Master controls the flow of data through the system.
4.2 Repeater
Required only if necessary to establish a radio path between a
Master and Remote(s); stores and forwards the data sent to it.
Synchronizes to Master and provides synchronization to
‘downstream’ units.
If a local device is attached to a Repeater’s serial data port, the
Repeater will also behave as a Remote (aka Repeater/Remote).
As they are added to a radio network it is good practice to use the
values 2-17, sequentially, for Repeater Unit Addresses.
Adding one or more Repeaters within a network will HALVE the
throughput; the throughput is halved only once, i.e. it does not
decrease with the addition of more Repeaters.
If there is a ‘radio (signal)path’ requirement to provide Repeater
functionality, but throughput is critical, the repeating function may be
accomplished by placing two Phantom II modems at the Repeater
site in a ‘back-to-back’ configuration. One Phantom II would be
configured as a Remote in the ‘upstream’ network; the other a
Master in the ‘downstream’ network. Local connection between the
modems would be accomplished with a crossover cable (for the
Ethernet connection). Each modem would require its own antenna;
careful consideration should be given with respect to antenna
placement and Phantom II configuration.
4.3 Remote
Endpoint/node within a network to which a local device is attached.
Communicates with Master either directly or through one or more
Repeaters. See Sections 5.3 and 5.4 for information regarding
‘Remote-to-Remote’ communications.
The Phantom II may be configured to operate in a number of
different operating modes and participate in various network
The RADIO network topology
determines the paths available
for the movement of data.
Take this important fact into
consideration when selecting a
network topology.
topologies.
Note: This section describes radio network topologies in general
and includes examples of corresponding Radio Configuration
settings. Refer to section 6 for further detailed information
regarding configuration options.
5.1 Point-to-Point (PTP)
In a Point-to-Point network, a path is created to transfer data
between
considered the Master modem and Point B a Remote. Such a
PTP network may also involve one or more Repeaters (in a storeand-forward capacity) should the radio signal path dictate such a
requirement.
Point A and Point B, where Point A may be
A PTP configuration may also be used in a more dynamic sense:
there may be many Remotes (and Repeaters) within such a
network, however the Master may have its ‘Destination Address’
changed as and when required to communicate with a specific
remote unit.
An example of a basic PTP network consisting of two Phantom II
modems is on the next page.
As shown in Example 5.1.1:
Configuration options are based upon the chosen
Operating Mode of the unit: select the Operating Mode
first.
The DESTINATION UNIT for the MASTER is the UNIT
ADDRESS of the REMOTE, and vice versa (noting that
the MASTER’s Unit Address (not visible) is preset, and
must remain as, ‘1’).
For a PTP system, RETRANSMISSIONS on a
MASTER is not as critical a setting as it is in a Point-toMultipoint (PMP) system.
In a Point-to-Multipoint network, a path is created to transfer data
between the Master modem and numerous remote modems. The
remote modems may simply be Remotes with which the Master
communicates directly, and/or Remotes which communicate via
Repeaters. Some or all of the Repeaters may also act as Remotes
in this type of Network, i.e. the Repeaters are not only storing and
forwarding data, but are also acting as Remotes. Such Repeaters
may be referred to as ‘Repeater/Remotes’.
Example 5.2.1
A 4-node network consisting of a Master, 1 Repeater, and 2
Remotes. 1 Remote is to communicate with the Master through a
Repeater; the other is to communicate directly with the Master.
Refer to Section 6.1.5 for
important information regarding
the configuration of a PMP
Master’s Retransmissions.
Image 5-3: PMP Example 5.2.1: Master
There is no DESTINATION UNIT displayed as, in PMP,
the DESTINATION is preset to 65535: the
BROADCAST address (‘multipoint’).
RETRANSMISSIONS are set to 0. Refer to Section
6.1.5 for more information.
There is a REPEATER in this example network,
therefore the MASTER’s ‘Repeater’ configuration
option is set to Yes.
When bench testing PMP with a
REPEATER in the network,
configure the REMOTE to
synchronize to the REPEATER
via the REMOTE’s ROAMING
ADDRESS field. If this is not
done, with the REMOTE in close
proximity to the MASTER and its
ROAMING set as 1 (default), the
REMOTE will simply synchronize
with (and pass data directly to)
the MASTER, bypassing the
REPEATER altogether.
On the following page are the configurations for the REMOTES.
The ROAMING address for the REPEATER is set to 1:
the UNIT ADDRESS of the MASTER. This means that
this REPEATER will synchronize to, and communicate
directly with, the MASTER.
There is no DESTINATION UNIT field for remote units
in a PMP network: the destination is predefined as
‘1’ (the MASTER ‘point’).
Remote 20’s ROAMING ADDRESS is set to 2, the
UNIT ADDRESS of the REPEATER. This Remote will
synchronize to the Repeater and communicate via the
Repeater to the Master.
Remote 30’s ROAMING ADDRESS is set to 1 (the
UNIT ADDRESS of the MASTER): it will synchronize
to, and communicate directly with, the MASTER.
P2P mode is used for communications between pairings of remote
modems.
e.g. Remote 20 can exchange data with (only) Remote 30,
Remote 21 can exchange data with (only) Remote 35, etc.
A P2P network requires a Master
modem.
The data being transmitted from
one Remote to another in P2P
mode is transferred via the
Master.
The Master will resend the data incoming to it from both Remotes to
both/all Remotes; one Remote’s data has a Destination Unit being
the other Remote and vice versa.
Example 5.3.1
A device located at a pump station must communicate bidirectionally with another device at a water tank. The MASTER
Phantom II must reside in an office at a separate location.
Image 5-7: P2P Example 5.3.1: Master
All Phantom II modems within a particular network must be configured to have the same Network Type.
continued...
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