FreeWave Technologies ARN2110AT FGRM User Manual FreeWave Technologies Inc
FreeWave Technologies Inc. FGRM FreeWave Technologies Inc
User Manual

FreeWave Technologies 
October 22, 2013 
900 MHz Spread Spectrum Installation Manual 
V5.3 
LIG0003AC   Rev D  1 of 11 
 FreeWave Technologies, Inc. 
900 MHz Wireless Modem 
Installation Guide 
This installation guide covers all models of the FreeWave Technologies 900 MHz spread 
spectrum transceiver sold under FCC ID KNY-6231812519 and KNYARN2110AT. 
 All transceiver models sold under FCC ID KNY-6231812519  and KNYARN2110AT 
must be installed professionally.  These transceivers  are  only approved for use 
when installed in devices produced by FreeWave Technologies or third party 
OEMs approved by FreeWave Technologies.  The antenna(s) to be used must be 
installed to provide a separation distance of at least 23 cm from all persons and 
must not be co-located or operating in conjunction with any other antenna or 
transmitter.  This transceiver must be installed in a NEMA enclosure. 

FreeWave Technologies 
October 22, 2013 
900 MHz Spread Spectrum Installation Manual 
V5.3 
LIG0003AC   Rev D  2 of 11 
FCC Notification 
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 must be operated as supplied by FreeWave Technologies, Inc.  
Any changes or modifications made to the device without the express written 
approval of FreeWave Technologies may void the user's authority to operate 
the device. 
CAUTION: This device has a maximum transmitted output power of 955 mW. It 
is required that the transmit antenna be kept at least 23 cm away 
from nearby persons to satisfy FCC RF exposure requirements. 
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. 
Note:  Whenever any FreeWave Technologies module is placed inside an enclosure a label 
must be placed on the outside of that enclosure which includes the module's FCC ID. 
UL Notification 
Model DGRO9RFS: 
GENERAL: 
            The device covered by this Report is a wireless data transceiver.  It must be installed in a 
suitable enclosure. 

FreeWave Technologies 
October 22, 2013 
900 MHz Spread Spectrum Installation Manual 
V5.3 
LIG0003AC   Rev D  3 of 11 
RATINGS: 
            The device is supplied by a NEC Class 2 Power Supply supplying: 
                        6 V dc to 14 V dc at 600 mA @ 57.6 KBAUD max. 
                        6 V dc to 18 V dc at 600 mA @ 19.2 KBAUD max. 
Conditions of Acceptability – When installed in the end use equipment, the following 
considerations are to be examined: 
1. The transceivers shall be mounted within an enclosure which is suitable for the intended 
application.  The enclosure shall also have provisions for Division 2 wiring methods as 
specified in the National Electrical Code or Canadian Electrical Code, as applicable. 
2. The transceivers must be used within their Recognized “Ratings” at an acceptable 
transmission rate.  “Increasing the baud rate may impair the safety characteristics for 
Class I, Division 2 Hazardous Locations.” 
3. Installations and use should be in accordance with the National Electrical Code or 
Canadian Electrical Code, as applicable. 
4. The connectors shall not be connected or disconnected while circuit is alive unless area 
is known to be nonhazardous. 
5. The end product shall be marked with a warning for the end user indicating that changes 
to the baud rate may impair the safety characteristics for Class I, Division 2 Hazardous 
Locations. 
Input voltages for Model# DGRO9RFS are determined by the label on the bottom of the board.  If 
the board has Label A shown below the input voltage is 6 to 14 volts DC. 
If the board has Label B shown below the input voltage is 6 to 14 volts DC at a 
maximum baud rate of 57.6 KBaud or 6 to 18 volts DC at a maximum baud rate of 
19.2 KBaud, operation mode of multipoint slave or multipoint slave/repeater only. 
Class 1 Div 2 
Label A 
Class 1 Div 2 
Label B 

FreeWave Technologies 
October 22, 2013 
900 MHz Spread Spectrum Installation Manual 
V5.3 
LIG0003AC   Rev D  4 of 11 
Models FGR2-IOS-T-U*, FGR2-IOS-TE-U*, FGR2-IOS-C-U, FGR2-IOS-CE-U, 
FGR2-TE-U*, FGR2-CE-U, FGR2-RE-U*, FGR2-C-U, FGR2-T-U*, FGR2-R-U* 
FGRM-C2, and FGRM-C3. 
* Model not currently in production 
GENERAL: 
            The devices covered by this Report are wireless data transceivers.  These devices are 
intended to be installed in a suitable enclosure.  
RATINGS: 
The devices are powered by a NEC Class 2 Power Supply: 
Operating voltage range 6 V dc to 30 V dc at 500 mA(Avg) 
Maximum operating ambient temperature is 40° C. 
Conditions of Acceptability – When installed in the end use equipment, the following 
considerations are to be examined: 
1. The transceivers shall be mounted within an enclosure which is suitable for the intended 
application.  The enclosure shall also have provisions for Division 2 wiring methods as 
specified in the National Electrical Code or Canadian Electrical Code, as applicable. 
2. The transceivers must be used within their Recognized “Ratings” and conditions of 
acceptability as referenced in Users Manual.   
3. Installations and use should be in accordance with the National Electrical Code or 
Canadian Electrical Code, as applicable. 
4. The connectors shall not be connected or disconnected while circuit is alive unless area 
is known to be non-hazardous. 
5. Must be connected to a Class 2 source.  
6. The diagnostics port and cable do not have a latching connector and cannot be used in a 
hazardous location. 
7. The End-Use Device must be provided with Markings and Installation Instructions in 
accordance with the End-Use standards.  At a minimum the following must be included in 
the Installation Instructions: 
a. “This equipment is suitable for use in Class I, Division 2, Groups A, B, C, and D 
or non-hazardous locations only.” 
b. “WARNING: DO NOT REMOVE OR INSERT THE DIAGNOSTICS CABLE 
WHILE CIRCUIT IS LIVE UNLESS THE AREA IS KNOWN TO BE FREE OF 
IGNITION CONCENTRATIONS OF FLAMMABLE GASES OR VAPORS.” 
Models FGRSR-CSU, RSU, and TSU 
GENERAL: 
FGRSR-CSU, RSU, and TSU are suitable for use in a 40°C ambient. 
The devices covered by this Report are low powered radios.  They must be installed in a 
suitable enclosure. 
RATINGS: 
The devices are supplied by a NEC Class 2 Power Supply as follows: 
FGRSR-CSU, -RSU, and -TSU: 
6 V dc to 20 V dc at 500 mA (Avg) @ 115.2K bd max. 

FreeWave Technologies 
October 22, 2013 
900 MHz Spread Spectrum Installation Manual 
V5.3 
LIG0003AC   Rev D  5 of 11 
Conditions of Acceptability – When installed in the end use equipment, the following 
considerations are to be examined: 
1.    The data reporting radio shall be mounted within an enclosure which is suitable for the 
intended application.  The enclosure shall also have provisions for Division 2 wiring methods as 
specified in the National Electrical Code or Canadian Electrical Code, as applicable. 
2.         The data reporting radio must be used within their Recognized ratings and transmission 
rate. 
3.         Installations and use should be in accordance with the National Electrical Code or 
Canadian Electrical Code, as applicable. 
4.         The connectors shall not be connected or disconnected while circuit is alive unless area is 
known to be nonhazardous.  Connector J2 is only used for programming the device; it has not 
been evaluated as a non-incendive circuit. 
5. The end product shall be marked with a warning for the end user indicating that changes 
to the baud rate may impair the safety characteristics for Class I, Division 2 Hazardous Locations. 
6. The diagnostics port and cable do not have a latching connector and cannot be used in a 
hazardous location. 
FGRIO-S 
GENERAL: 
FRGIO-S is suitable for use in a 40°C ambient. 
The device covered by this Report is a wireless radio transceiver that accepts up to 2 
analog input and 2 digital output signals from a sensor.  They must be installed in a 
suitable enclosure. 
RATINGS: 
            The devices are supplied by a NEC Class 2 Power Supply as follows: 
            FGRIO-S: 6 V dc to 20 V dc @ 115.2K bd max. 
Conditions of Acceptability – When installed in the end use equipment, the following 
considerations are to be examined: 
1. The data reporting radio shall be mounted within an enclosure which is suitable for the 
intended application.  The enclosure shall also have provisions for Division 2 wiring 
methods as specified in the National Electrical Code or Canadian Electrical Code, as 
applicable. 
2. The data reporting radio must be used within their Recognized ratings and transmission 
rate. 
3. Installations and use should be in accordance with the National Electrical Code or 
Canadian Electrical Code, as applicable. 
4. The connectors shall not be connected or disconnected while circuit is alive unless area 
is known to be nonhazardous.  Connector J2 is only used for programming the device; it 
has not been evaluated as a non-incendive circuit. 
5.  The end product shall be marked with a warning for the end user indicating that changes 
to the baud rate may impair the safety characteristics for Class I, Division 2 Hazardous 
Locations. 
6. The diagnostics port and cable do not have a latching connector and cannot be used in a 
hazardous location. 

FreeWave Technologies 
October 22, 2013 
900 MHz Spread Spectrum Installation Manual 
V5.3 
LIG0003AC   Rev D  6 of 11 
FGRIO-M 
GENERAL: 
 FGRIO-M is suitable for use in a 40°C ambient. 
Conditions of Acceptability – When installed in the end use equipment, the following 
considerations are to be examined: 
1.  The data reporting radio shall be mounted within an enclosure which is suitable for the 
intended application.  The enclosure shall also have provisions for Division 2 wiring 
methods as specified in the National Electrical Code or Canadian Electrical Code, as 
applicable. 
2. The data reporting radio must be used within their Recognized ratings and transmission 
rate. 
3. Installations and use should be in accordance with the National Electrical Code or 
Canadian Electrical Code, as applicable. 
4. The connectors shall not be connected or disconnected while circuit is alive unless area 
is known to be nonhazardous.  Connector J2 is only used for programming the device; it 
has not been evaluated as a non-incendive circuit. 
5. The end product shall be marked with a warning for the end user indicating that changes 
to the baud rate may impair the safety characteristics for Class I, Division 2 Hazardous 
Locations. 
6. Must be connected to a Class 2 source. 
Models FGRO9CSU, FGRM-501X018D, FGRM-501X015, FGRM-511X015, 
FGRM-506X015, and FGRM-516X015 
GENERAL: 
The devices covered by this Report are wireless data transceivers.  They must be 
installed in a suitable enclosure. 
RATINGS: 
            The devices are supplied by a NEC Class 2 Power Supply as follows: 
            FGRO9CSU, FGRM-501X018D, FGRM-501X015, FGRM-511X015:           
                        6 V dc to 30 V dc at 500 mA (Avg) @ 115.2K bd max. 
            FGRM-506X015, FGRM-516X015: 
                        5.5 V dc to 7.5 V dc at 370 mA (Avg) @ 115.2K bd max. 
Conditions of Acceptability – When installed in the end use equipment, the following 
considerations are to be examined: 
1. The transceivers shall be mounted within an enclosure which is suitable for the intended 
application.  The enclosure shall also have provisions for Division 2 wiring methods as 
specified in the National Electrical Code or Canadian Electrical Code, as applicable. 
2.  The transceivers must be used within their Recognized ratings and transmission rate. 
3. Installations and use should be in accordance with the National Electrical Code or 
Canadian Electrical Code, as applicable. 

FreeWave Technologies 
October 22, 2013 
900 MHz Spread Spectrum Installation Manual 
V5.3 
LIG0003AC   Rev D  7 of 11 
4. The connectors shall not be connected or disconnected while circuit is alive unless area 
is known to be nonhazardous.  Connector J2 is only used for programming the device; it 
has not been evaluated as a non-incendive circuit. 
5.  The end product shall be marked with a warning for the end user indicating that changes 
to the baud rate may impair the safety characteristics for Class I, Division 2 Hazardous 
Locations. 
6.  Must be connected to a Class 2 source. 
7. The diagnostics port and cable do not have a latching connector and cannot be used in a 
hazardous location. 
A.  Transceiver installation steps 
To install the DGR, FGR, and FGR2 series transceivers, follow the basic steps given below. 
1. Mount the transceiver to the flat, stable surface using mounting holes in the corners of the 
transceiver. FreeWave recommends a minimum stand-off height of ¼”. The following 
mounting bracket solutions are available from FreeWave Technologies: Model #ONTWK-001 
and Model #PMB-ENCL.  
 DO NOT USE VELCRO® TO MOUNT THE RADIO 
• Attaching and detaching Velcro® pieces  creates an ESD (Electro-static Discharge) 
hazard. ESD can damage the radio’s circuitry. It also has the potential to damage 
other electronic devices close by. 
• Mounting a radio to a metal surface with Velcro® does not provide enough distance 
between the surfaces, and can result in an electrical short across the radio 
Velcro® is the registered trademark of Velcro Industries B.V. 
2. Install the antenna and connect the antenna feedline to the transceiver.  If you are installing a 
directional antenna, preset the antenna’s direction appropriately.  The antenna must be 

FreeWave Technologies 
October 22, 2013 
900 MHz Spread Spectrum Installation Manual 
V5.3 
LIG0003AC   Rev D  8 of 11 
professionally installed on fixed-mounted permanent outdoor structures for satisfying RF 
exposure requirements. 
3. Connect a computer to the transceiver’s RS232 port (please refer to the part C of this 
addendum for more information about the transceiver’s pin assignment).  This computer will 
be used to set the radio’s configurations. 
4. Install the power for the radio. 
5. Set the radio configuration according to the system topology and data terminal equipment 
requirements.  Default transceiver settings allow user to do a quick installation without major 
changes in transceiver’s configuration.  But there is one parameter that must be considered 
for a new installation – transceiver’s power output settings. 
Transceiver output power level must be set according to the tables given below to satisfy 
FCC maximum EIRP requirement.  Per FCC regulations, any antenna used with FreeWave 
transceivers must either be one of the approved antennas shown below or an antenna 
approved by FreeWave Technologies with comparable performance parameters.  FreeWave 
Technologies offers a variety of omnidirectional and directional external antennas, with both 
bracket and magnetic mounts. The complete list of antennas available from FreeWave 
Technologies including antenna gains, antenna manufacturer’s information and antenna’s 
characteristics is shown below:   
The following antennas are approved for use with FreeWave transceivers covered in this 
guide, except for the FGRM models: 
900 MHz Directional Antennas 
Gain 
Manufacturer 
Manufacturer 
Model Number 
FreeWave 
Model Number 
8.85 dBd/11 dBi 
Larsen 
YA5-900-W 
EAN0900YA 
10 dBd/12.15 dbI 
Bluewave 
BMY890K5502N4 
EAN0900YC 
5.85 dBd/8 dBi 
Larsen 
YA6-900-W 
EAN0906YA 
6.5 dBd/8.65 dBi 
Bluewave 
BMY890G5502N4 
EAN0906YC 
 900 MHz Omni-directional Antennas 
Gain 
Manufacturer 
Manufacturer 
Model Number 
FreeWave 
Model Number 
-0.15 dBd/2 dBi 
Mobile Mark 
PSKN3-925S 
EAN0900SR 
-2.15 dBd/0 dBi 
Mobile Mark 
PSTG0-915SE 
EAN0900SQ 
3 dBd/5.15 dBi 
Maxrad 
MAX-9053 
EAN0900WC 
2.85 dBd/5 dBi 
Antenex 
EB8965C 
EAN0905WC 
8.5 dBd/12.15 dBi 
Antenex 
FG9026 
EAN0906WB 
The following antennas are approved for use the FGRM models: 
900 MHz Omni-Directional Antennas 
Gain 
Manufacturer 
Manufacturer 
Model Number 
FreeWave 
Model Number 
6 dBd/8.15 dBi 
Antenex 
FG9026 
EAN0906WB 

FreeWave Technologies 
October 22, 2013 900 MHz Spread Spectrum Installation Manual 
V5.3 
LIG0003AC   Rev D  9 of 11 
WARNING:  Any antennas placed outdoors must be properly grounded.  Use extreme 
caution when installing antennas and follow all instructions included with the 
antennas. 
Table 1 below provides the maximum output power settings for FreeWave transceivers at 
given antenna gain (12.15 dBi  and  8.15 dBi  Yagi antennas are given as an example) and 
cable loss combinations.  Please note that it is the installer’s responsibility to ensure that 
the emission limits are not exceeded.   
Table 2 below shows how the Transmit Power settings on the radio correspond to the EIRP 
of the transceiver-cable-antenna combination for the 12.15 dBi Yagi antenna at different 
cable loss values. 
Shaded area indicates combinations where EIRP limitations exceed FCC regulations 
and RF Xmit Power must be reduced. 
Table 3 below is similar to the Table 2, but shows the information for the 8.15 dB Omni 
antenna. 
Table 1:    Output Power Settings at given Antenna Gain & 
Cable Loss combination. 
Cable Loss 
    1dB 2dB 3dB 4dB 
Antenna 12.15 dBi  5  6  6  7 
Gain 8.15 dBi  8  9  10 10 
Table 2:    EIRP for 12.15 dBi Yagi Antenna, Cable loss vs. 
RF Xmit Power Setting. 
Cable Loss 
    1dB 2dB 3dB 4dB 
RF Xmit 10 41.15 40.15 39.15 38.15 
Power 9  40.25 39.25 38.25 37.25 
  8  39.25 38.25 37.25 36.25 
  7  38.05 37.05 36.05 35.05 
  6  36.75 35.75 34.75 33.75 
Table 3:    EIRP for 8.15 dBi Omni Antenna, Cable loss vs. 
RF Xmit Power Setting. 

FreeWave Technologies 
October 22, 2013 
900 MHz Spread Spectrum Installation Manual 
V5.3 
LIG0003AC   Rev D  10 of 11 
Follow the steps below to configure the Power Output Level: 
 Start HyperTerminal or any other terminal emulation program on the computer connected 
to the transceiver’s RS232 port (refer to the User Manual for the HyperTerminal setup 
instructions). 
 Invoke the setup menu on the transceiver. 
 Choose option number “3” from the Main Menu which appeared on the “Hyper Terminal” 
window. 
 Choose option number “5” from the “Radio Modem Parameters” menu followed by the 
settings an appropriate RFXmitPower value, which was defined from the previous 
transceiver installation procedure. 
6. Repeat the steps above for each transceiver in the network. 
NOTE. Please, be advised that antennas other than listed in this section can potentially be 
used with the transceiver provided that:  
• these antennas are of a similar type to the listed above; 
• antenna gain does not exceed 8.15 dBi for omnidirectional and 12.15 dBi for 
directional antennas 
• overall system EIRP does not exceed 36 dBm. 
WARNING: Any antenna other than listed in this section needs  to be approved by 
FreeWave Technologies before it is used to assure that the transceiver in combination 
with the new antenna meets FCC requirements. 
B. Transceiver Location 
Placement of the FreeWave transceiver is likely to have a significant impact on its performance.  
In general the rule of thumb with FreeWave is that the higher the placement of the antenna the 
better the communication link -  height is everything!  In practice you should also place the 
transceiver away from computers, telephones, answering machines, and other similar equipment. 
To improve the data link, FreeWave Technologies offers directional and omnidirectional antennas 
with cable lengths ranging from 3 to 200 feet. 
When using an external antenna, placement of that antenna is critical to a solid data link.  Other 
antennas in close proximity are a potential source of interference; use the Radio Statistics or 
Diagnostics software to help identify potential problems.  It is also possible that slight adjustments 
Cable Loss 
1dB 
2dB 
3dB 
4dB 
RF Xmit 
10 
37.15 
36.15 
35.14 
34.15 
Power 
9 
36.25 
35.25 
34.25 
33.25 
8 
35.25 
34.25 
33.25 
32.25 
7 
34.05 
33.05 
32.05 
31.05 
6 
32.75 
31.75 
30.75 
29.75 

FreeWave Technologies 
October 22, 2013 
900 MHz Spread Spectrum Installation Manual 
V5.3 
LIG0003AC   Rev D  11 of 11 
in antenna placement (as little as 2 feet) will solve noise problems.  In extreme cases, such as 
when the transceiver is located close to Pager or Cellular Telephone transmission towers, 
FreeWave offers a band pass filter to reduce the out of band noise. 
C. Board Level Pin Assignments 
The board level transceiver uses standard RS232 polarity and voltage levels for all of the RS232 
signal lines (DTR, Transmit Data, Receive Data, Carrier Detect, RTS, and Clear to Send). 
Pin 1: B+  Power input. 
Pin 2: Interrupt (INT) – Input – A 0 volt level on this pin will switch the radio into setup mode. 
Note:  Pin 1 on the DGRO9 board level transceiver is the pin farthest from the three 
LEDs and pin 10 is closest to the LEDs. 
D. Power Connection 
The DGR and FGR series transceivers can be operated from any Class 2 power source, input 
voltages vary by model.  The power source should be capable of providing at least 0.8 amperes 
of continuous current.  The pin #1 of the 10-pin connector on the transceiver is the positive lead; 
pin #4 or pin #6 of this connector should be as a negative lead. 
Transceiver is designed to operate in negative ground systems only. 
Table 4:    Board Level 
Transceiver Pinout 
Pin 
Signal 
Assignment 
1 
Input 
B+ input 
2 
Input 
Interrupt (Ground to invoke menu) 
3 
Input 
DTR 
4 
Ground 
5 
Output 
Transmit Data 
6 
Ground 
7 
Input 
Receive Data 
8 
Output 
Carrier Detect 
9 
Input 
RTS 
10 
Output 
Clear to Send