Harris RF Communications Division RF-7800B-DU024 Land Portable BGAN Terminal User Manual USERS PART4

Harris Corporation RF Communications Division Land Portable BGAN Terminal USERS PART4

USERS PART4

5-1
RF-7800B
SCHEDULED MAINTENANCE
R
CHAPTER 5
SCHEDULED MAINTENANCE
5.1 PREVENTIVE MAINTENANCE
Preventive maintenance is the systematic, daily care and inspection of equipment to prevent equipment failure and
reduce downtime.
Table 5-1 contains the checks and services that should either be performed on a daily basis when the equipment is
in use or on a weekly basis when the equipment is in a standby condition. Table 5-2 contains the checks and services
that should be performed on a weekly basis.
NOTE
To avoid impaired BGAN terminal performance, make sure
the antenna is not damaged or the surface is not covered with
foreign material like paint of labeling.
5.2 CORRECTIVE MAINTENANCE
Shortcomings and defects which are revealed when the BGAN terminal is in service must be attended to by means
of corrective maintenance. The type of work required determines if the corrective maintenance procedure can be
performed by the operator, or if it must be performed at a maintenance facility.
Table 5-1. Daily Preventive Maintenance Checks and Services
Check No. Item to be Inspected Procedure
1 Completeness Check to see that the equipment is complete.
2 Exterior Surfaces Remove dust, dirt, and moisture from all surfaces. Only use a soft
damp cloth to clean the Broadband Global Area Network (BGAN)
Terminal.
3 Operation Verify connection to BGAN terminal web interface.
4 Installation Check hardware for looseness. Make sure unit is secure.
5 RF-7800B-VU104 drain
holes
There are four separate drain holes on the bottom of the RF-7800B-
VU104 that will allow condensation and moisture out of the
antenna to prevent any corrosion. Turn the screws clockwise to
Open and counterclockwise to Close.
Table 5-2. Weekly Preventive Maintenance Checks and Services
Check No. Item to be Inspected Procedure
1 Connectors Check all connectors for debris, damage, or corrosion. Elevate to
a higher level of maintenance, if required.
2 Antenna Check for breaks or strains; repair or replace as required.
3 Cables Check for cracks or cuts; repair or replace as required.
5-2
RF-7800B
SCHEDULED MAINTENANCE
R
The following procedures assume that the operator has determined that the BGAN terminal is faulty. This could be
determined in three ways:
The self-test has been run and a fault code has been identified by the BGAN terminal.
A run-time fault message is displayed by the Antenna Status page.
The observed degraded operation suggests that the BGAN terminal is faulty.
Whenever it is believed that the BGAN terminal may be faulty, the troubleshooting procedures in this chapter should
be followed to determine the recommended corrective action. If the symptom observed is not covered, report the
problem to a Level II or III maintainer (Direct Support, Intermediate Maintenance, or Factory Warranty Support).
Faults can be detected by the Built-In Test (BIT) or visual observation.
5.2.1 Troubleshooting Procedures
Self test faults are displayed on the Antenna Status page. The following paragraphs identify probable failure causes,
and suggested corrective actions.
5.2.1.1 Power-on BIT Faults
BIT faults are saved following an power-on BIT and are displayed on Antenna Status page.
5.2.1.2 Operator-Initiated BIT Faults
BIT faults are displayed following an operator-initiated BIT. For information on running BIT, refer to
Paragraph 4.3.7. When a fault message is displayed, record all fault code information and report the fault to a Level
II or Level III maintainer.
5.2.1.3 Run-Time Faults
Run-Time faults mostly occur due to programming errors and are listed in Table 5-3. Sometimes hardware failures
can cause run-time failures. Send the radio to a level II or III repair facility for hardware failures.
5.2.1.4 Non-BIT Faults
Non-BIT faults are operator-observed failures, or cases of degraded operation. Locate the observation in the first
column of Table 5-4 and follow the recommended action. If the recommended action is unsuccessful, report the fault
to a Level III maintainer.
Table 5-3. Run-Time BIT Faults, Descriptions, and Corrective Action
Text Message Description/Corrective Action
Hot, Very Hot, Very Very Hot, Too Hot Temperature warnings. Hot = warning, Very Hot = reducing
functionality, Very Very Hot = shutting down calls, Too Hot =
imminent shutdown.
Personal Identification Number (PIN) Required Enter a 4-8 digit PIN to enable non-emergency functions.
Personal Unblocking Key (PUK) Required Enter a 4-8 digit PUK to revert Subscriber Identity Module
(SIM) to the original unlocked state.
5-3
RF-7800B
SCHEDULED MAINTENANCE
R
Table 5-4. Non-BIT Troubleshooting
Observation Action
BGAN terminal does not power on. Check batteries and/or power source.
Check cable connections.
Battery Box not supplying power.
Applies to the RF-7800B-DU024 only.
Check Fuse F1, F2 (Automotive Blade, 5 A 32 V).
Check Batteries.
Integrated Services Digital Network (ISDN) calls are not
accepted.
The Mobile Subscriber Number (MSN)
programmed into the ISDN device does not match
the MSN programmed into the terminal.
ISDN calls are not being made. The ISDN interface is turned off (the interface turns
off automatically when the terminal is operating
from battery power, or if no ISDN device is
detected within five minutes from power on).
BGAN terminal is connected to the BGAN network, but
cannot obtain the requested Quality of Service.
The BGAN terminal is not optimally pointed at the
satellite. Re-point the terminal.
Terminal does not obtain a Global Positioning System (GPS)
fix.
BGAN terminal location limits visibility of four or
more GPS satellites. Move the terminal to a
location where there are few obstructions.
BGAN terminal makes a continuous beep when an ISDN
device is connected to the ISDN port.
The ISDN device is trying to draw too much power
from the BGAN terminal's ISDN interface. Make
sure it is an ISDN device that draws less than 70
mA of current at 40 V (equivalent power 2.8 W). It
might be an Ethernet device.
The terminal will not register with the BGAN Network.
When viewing the terminal's Web interface, does the
terminal have a 3D GPS fix?
The BGAN terminal requires a GPS fix to
determine the correct Rx and Tx radio frequencies
to use.
Using the BGAN terminal's Web interface, wait for
the terminal to acquire a 3D fix. Attempt to move
the terminal to a location with a more open view of
the sky. Once the unit has acquired a GPS fix, it can
be moved into a more sheltered location nearby.
The terminal will not register with the BGAN Network.
Does the terminal have a clear line of sight to the
satellite?
Move the terminal to a more open location. In urban
environments, buildings produce regions of signal
reflection and fade that can result in strong signal
readings, but which introduce sufficient noise to
prevent communication. In such conditions, often
moving the terminal only a couple meters can fix
the problem.
The terminal will not register with the BGAN Network.
Are you in a geographical location where two BGAN
satellites have coverage?
The Land Mobile SATCOM-on-the-Move terminal
will automatically search for the best satellite
connection, but your position may be blocking the
view to the nearer satellite. You can force the
terminal to search for the other satellite by changing
the 'Satellite Selection' setting on the Web interface
Setup page from 'AUTO' to the desired satellite.
5-4
RF-7800B
SCHEDULED MAINTENANCE
R
The terminal will not register with the BGAN Network.
Is the 'Satellite Selection' configured with the
appropriate setting?
The 'Satellite Selection' allows for specification of
the satellite to use. This can be configured to use a
specific satellite, or to automatically locate the most
appropriate one.
If a specific satellite is selected, ensure that it is
within your field of view. Alternatively, select
'AUTO' if the specific satellite is unknown.
Using the Web interface on the Properties screen, the
terminal shows the "Registration Status" as "Registered", but
the "PS Attach" status as "Not Attached".
Is your BGAN subscription valid?
The most common cause for a failure to PS Attach
is that your BGAN service provider is denying you
service. Contact your BGAN service provider to
ensure the subscription is valid.
The Packet Data Protocol (PDP) context activation attempt
fails because the requested static Internet Protocol (IP)
address is in use or otherwise unavailable.
Are you requesting the correct static IP address?
Confirm you are using the correct Access Point
Name (APN), username, and password to obtain the
desired IP address. These parameters may vary
based on your geographical location. Check with
your BGAN service provider.
The PDP context activation attempt fails because the
requested static IP address is in use or otherwise unavailable.
Is the requested IP address permitted in your current
location?
The use of static IP addresses is specific to
geographical regions. Your BGAN service provider
will provide the details. Confirm that you are
requesting the correct static IP address for your
current geographical position.
The PDP context activation attempt fails because the
requested static IP address is in use or otherwise unavailable.
Was the last context activation made to the requested
IP address properly deactivated?
The BGAN system is designed to allow for short
outages in the connection link between the terminal
and the satellite. For example, when the vehicle
with a BGAN terminal drives behind a building, the
BGAN system will allow the Background PDP
connection to remain broken for one hour. During
that one hour the IP address remains assigned to
that context. (Note, if you remove DC power from
the BGAN terminal without properly deactivating a
context, the BGAN Network will keep the IP
address for that context allocated to that BGAN
terminal for one hour. Moving the Land Portable
power switch to OFF will correctly deactivate the
PDP context before shutting off power to the unit.)
You can power the terminal back on, reactivate the
context, and then properly deactivate it to release
the IP address. Alternatively, wait one hour for
BGAN to release the IP address, or use a different
IP address.
Table 5-4. Non-BIT Troubleshooting (Continued)
Observation Action
5-5
RF-7800B
SCHEDULED MAINTENANCE
R
The PDP context activation attempt fails because the
requested static IP address is in use or otherwise unavailable.
Is there network congestion in your specific spot
beam?
It is possible during periods of heavy network usage
that the network is too busy to grant a PDP context
request.
Continuously retry activation attempts. As soon as
the network is able to grant you a PDP context, it
will. Additionally, your BGAN Service Provider
can determine if the problem is due to network
congestion.
The terminal has power, but the Ethernet electrical link
indication is not present.
Verify that the MIL Data Connector on the cable is
fully connected to the MIL Data Connector on the
BGAN terminal. The red outline on the BGAN
terminal connector should not be seen when fully
screwed in.
Cable 12043-0834 contains both a female ISDN
and a male Ethernet connector. Ensure the correct
connector is used.
The terminal has power, but the Ethernet electrical link
indication is not present.
Check computer settings.
Ensure that the Ethernet Device is properly
configured on your computer. Refer to
Paragraph 2.6 Initial Turn-On / Check.
The terminal Ethernet electrical link is present, but IP traffic
to the default IP address of the terminal gets no response.
Was the IP address of the terminal changed from the
default?
Retry the communication using the correct IP
address for the terminal. If the address was changed
and forgotten proceed to the actions below to
recover the IP address of the terminal.
The terminal Ethernet electrical link is present, but IP traffic
to the default IP address of the terminal gets no response.
Is the DHCP server feature enabled in the terminal?
Configure the communicating device to use
Dynamic Host Configuration Protocol (DHCP).
The terminal Ethernet electrical link is present, but IP traffic
to the default IP address of the terminal gets no response.
Was the embedded DHCP server turned off?
Configure the communicating device to use DHCP.
If the BGAN terminal was changed to a static IP
address, and that IP address was forgotten, remove
the Universal Mobile Telecommunications System
Subscriber Identification Module (USIM) card,
then power the terminal up. With the USIM
removed, the terminal will automatically enable the
DHCP server feature. This will allow a directly
connected computer to use DHCP to receive an
address from the BGAN terminal, as well as allow
the computer to reconfigure the BGAN terminal
appropriately.
Ensure that the computer is configured to be in the
same subnet as the terminal if the terminal is not
configured for DHCP. If DHCP is enabled on the
terminal, ensure that the computer got an IP
Address from the BGAN terminal. Refer to
Paragraph 2.6 Initial Turn-On / Check.
Table 5-4. Non-BIT Troubleshooting (Continued)
Observation Action
5-6
RF-7800B
SCHEDULED MAINTENANCE
R
The PDP context is active, but data will not flow over the
connection.
On the 'PDP-Contexts' Web interface page, confirm
that the Local IP address of the active context
matches the IP address of the device attempting to
send data.
Only packets sourced from the Local IP Address
will be allowed to pass over the PDP context
created.
If the addresses do not match, you must deactivate
the context and create a new one with the correct
Local IP Address. Note that when using DHCP
from the computer, the computer IP address may
change.
The PDP context is active, but data will not flow over the
connection.
Does your Local Area Network (LAN) route packets
between the Local IP Address and the BGAN terminal?
Confirm you network configuration is correctly
routing packets between the Local IP Address of
the active context to the BGAN terminal.
I can't hear pointing tones on my RF-7800B-DU when the
switch is in the audio position
Check the 'Bypass Antenna Pointing' setting on the
Web interface Setup page.
The 'Auto Power On' setting might be disabled on
your terminal. Use the switch to power off the
terminal and power it back on. Check the 'Auto
Power On' feature setting via the Web interface.
When the 'Auto Power On' feature is enabled, the
terminal will automatically power on when power
is applied to the unit and the power switch is not in
the OFF position. This feature allows for automatic
reboot of the terminal following an unexpected
power failure.
What frequency is my BGAN terminal transmitting on? Check the Web interface 'Antenna' page.
It varies slightly by location. Register and create a
PDP context with the terminal. Then check the
'Antenna' page on the terminal's Web interface for
your spot beam frequency. This is the frequency
that user data is transmitted on.
Table 5-4. Non-BIT Troubleshooting (Continued)
Observation Action
5-7
RF-7800B
SCHEDULED MAINTENANCE
R
5.3 BATTERIES
The BGAN Battery Box Kit 12091-4010-01 can use one of the following batteries:
BA-5590/U Lithium Sulfur Dioxide (Li-SO2) non-rechargeable
BA-5390/U Lithium Manganese Dioxide (Li-MnO2) non-rechargeable
BB-590/U Nickel-Cadmium (Ni-Cd) rechargeable
BB-390A/U Nickel-Metal Hydride (Ni-MH) rechargeable
BB-390B/U Ni-MH rechargeable
BB-490/U lead-acid rechargeable
BB-2590/U Lithium-Ion (Li-ION) rechargeable
My RF-7800B-DU does not seem to turn on when power is
applied.
Check if the 'Auto Power On' feature is enabled on
the Web interface 'Setup' page.
The 'Auto Power On' setting might be disabled on
your terminal. Use the switch to power off the
terminal and power it back on. Check the 'Auto
Power On' feature setting via the Web interface.
When the 'Auto Power On' feature is enabled, the
terminal will automatically power on when power
is applied to the unit and the power switch is not in
the OFF position. This feature allows for automatic
reboot of the terminal following an unexpected
power failure.
The BGAN terminal was online, but has since been placed
offline (Not Registered) without user intervention.
Has the view of the satellite become obstructed?
Restore a clear line of sight between the terminal
and the satellite. The connection will automatically
be restored if the interruption was less than one
hour.
The BGAN terminal was online, but has since been placed
offline (Not Registered) without user intervention.
Was there any data sent over the connection for 12
hours?
The BGAN system will automatically deactivate a
context that has not sent any data for 12 hours.
Manually reactivate the PDP Context.
If desired, enable the '24/7 PDP Context Keep
Alive' feature on the 'Setup' page of the Web
interface to keep unused connections active longer
than 12 hours.
The BGAN terminal was online, but has since been placed
offline (Not Registered) without user intervention.
Did you reach the data limit for your BGAN
subscription?
To limit BGAN expenses, USIM cards can be
commissioned to have a daily/weekly/monthly
traffic or monetary limit.
Contact your USIM administrator to obtain more
air-time. Check with your BGAN Service Provider
to determine if this was the cause.
Table 5-4. Non-BIT Troubleshooting (Continued)
Observation Action
5-8
RF-7800B
SCHEDULED MAINTENANCE
R
Refer to Paragraph 3.3.2.5 for information on connecting the battery box to RF-7800B-DU024 Land Portable
BGAN Terminal.
5.3.1 Battery Life
The most significant factor in determining battery life is transmission output power level and duty cycle. To
maximize battery life, keep BGAN terminal off when not needed, and minimize transmissions.
5.3.2 Battery Safety
WARNING
For batteries containing Lithium, do not charge, short circuit,
incinerate, mutilate, recharge non-rechargeable batteries,
expose to fire, or expose to temperatures above 130F
(54.4C). Failure to comply may cause battery to vent,
rupture, start a fire, or explode, causing personal injury.
WARNING
Never expose batteries to any amount of water at any time.
This could cause a fire or explosion, causing personal injury.
WARNING
Do not activate Complete Discharge Device (CDD) of a
damaged Lithium Battery as this could release toxic material
that can cause personal injury.
WARNING
If the battery becomes hot, a hissing sound is heard, and an
irritating smell occurs; power the radio OFF, disconnect the
batteries from the radio and move the equipment to a
well-ventilated area. If a battery leak is detected, follow
appropriate Hazardous Materials (HAZMAT) procedures to
reduce risk of personal injury.
Dispose of partially and fully discharged batteries in accordance with your local directives. Improper disposal of
hazardous waste is prohibited by law.
When using BA-5590/U Lithium batteries, it is recommended that the user consult MIL-B-49430 (ER), MIL-SPEC,
batteries, non-rechargeable, Lithium Sulfur Dioxide, and MIL-B-49430/3D (ER), MIL-SPEC, batteries,
nonrechargeable, Lithium Sulfur Dioxide BA-5590/U.
5-9
RF-7800B
SCHEDULED MAINTENANCE
R
5.3.3 Rechargeable Battery Packs
WARNING
Do not overcharge, short circuit, incinerate, or mutilate
rechargeable batteries. Charge batteries per manufacturer’s
instructions. Failure to comply could cause personal injury or
death.
Optional battery chargers are available to provide fully automatic battery charging and fault detection. Models are
available for single or multiple battery charging, and display the status of each connected battery during operation.
Contact Harris for particular applications.
5.3.4 Disposing of Lithium Batteries
WARNING
Do not dispose of batteries in uncontrolled trash, as batteries
may contain hazardous materials. Check with local directives
for proper disposal. Failure to comply could cause injury or
death to personnel.
WARNING
Store multicell lithium sulfur dioxide batteries in a well
ventilated area away from personnel. Do not activate the CDD
of a damaged battery. Damaged multicell lithium sulfur
dioxide batteries must be processed as hazardous waste and
should not be thrown into a local dumpster. Otherwise,
personal injury or death may result.
Lithium batteries, whether discharged or partially discharged, should only be disposed of per local directives. Refer
to local directives for additional information on lithium batteries. Do not place lithium batteries in trash compactors.
Refer to local directives for more information on lithium batteries.
5-10
RF-7800B
SCHEDULED MAINTENANCE
R
This page intentionally left blank.
A-1
RF-7800B
APPENDIX A
R
APPENDIX A
TECHNICAL INFORMATION
A.1 CHASSIS CONNECTOR PINOUT DATA
Table A-1, and Table A-2, provide pinout data for the connectors mounted to the BGAN terminal. Figure A-1 shows
the connector locations and pinouts. For information on connectors that mate to the BGAN terminal chassis
connectors, refer to Paragraph A.1.1.
Table A-1. DATA
Pin # Signal Name Dir Description Specs
1 ISDN_TX- I ISDN Receive -
2 ISDN_TX+ I ISDN Receive +
3 ISDN_RX- O ISDN Transmit -
4 ISDN_RX+ O ISDN Transmit +
5 ETHER_TX- I Ethernet Receive -
6 ETHER_TX+ I Ethernet Receive +
7 ETHER_RX- O Ethernet Transmit -
8 ETHER_RX+ O Ethernet Transmit +
9 USB_GND I USB Ground
10 USB_VBUS I USB Voltage Bus
11 USB_D- I/O USB Data -
12 USB_D+ I/O USB Data +
Table A-2. POWER
Pin # Signal Name Description Specs
ADC+ DC +
B GND Ground No cable connection
CPower Control
(ACTIVATION_SIGNAL)
Jumper to D to enable
Power Control Signal
For RF-7800B-VU104 only.
Activates power when grounded.
D GND Ground
Figure A-1. RF-7800B Data and Power Connector Pinouts
A
B
D
C
1
8
7
6
12
13
4
511 10
9
2
3
CL-0365-4200-0036
A-2
RF-7800B
APPENDIX A
R
A.1.1 Mating Connectors
Table A-3 provides part numbers for the cable connectors that mate to the chassis connectors.
Table A-3. Connectors and Mating Connector Part Numbers
Chassis Connector Mating Connector Part Number
RF-7800B Data J09-0024-102
RF-7800B Power J09-0007-207
B-1
RF-7800B
APPENDIX B
R
APPENDIX B
GLOSSARY
B.1 GLOSSARY
The following provides a glossary of terms used in this manual.
-A-
AAmpere
ABIT Antenna Built-In Test
AC Alternating Current
ACA Automatic Context Activation
AES Advanced Encryption Standard
APN Access Point Name
ATB Antenna Tracking Board
-B-
BIT Built-In Test
BGAN Broadband Global Area Network
BLOS Beyond-Line-of-Sight
-C-
°C Celsius, degrees
C/NO Carrier-to-Noise ratio
CDD Complete Discharge Device
CE Conformité Européenne, a French term that can be literally translated
into English as European Conformity. The CE Marking is a
certification for products within the European Economic Area.
CID Context Identifier
cm Centimeter
CS Circuit Switch
B-2
RF-7800B
APPENDIX B
R
GLOSSARY - CONTINUED
-D-
dB Abbreviation for decibel, which is one-tenth of a bel.
dBm The amount of power relative to that represented by a 1 kHz signal
which is fed one milliwatt of power into a 600 ohm resistive load; or
1 dB relative to one milliwatt, 0 dBm = 1 mW.
dBW 1 dB relative to one Watt.
DC Direct Current
DHCP Dynamic Host Configuration Protocol (Automates the assignment of
IP addresses to computers)
DNS Domain Name System
-E-
EEast
EEPROM Electrically Erasable Programmable Read Only Memory
EIRP Effective Isotropic Radiated Power
-F-
°F Fahrenheit, degrees
FAX
FCC Federal Communication Commission
FTP File Transfer Protocol
FXS Foreign Exchange Subscriber
-G-
GMPCS Global Mobile Personal Communications by Satellite
GMT Greenwich Mean Time
GPRS General Packet Radio Service
GPS Global Positioning System
GSM Global System for Mobile Communications
-H-
HAIPE High Assurance Internet Protocol Encryptors
HAZMAT Hazardous Materials
HF High Frequency
B-3
RF-7800B
APPENDIX B
R
GLOSSARY - CONTINUED
-H- (Continued)
HPA High Power Amplifier
http Hypertext Transfer Protocol (world wide web protocol)
Hz Abbreviation for hertz, or cycles per second.
-I-
ID Identification
IMEI International Mobile Equipment Identity
IMSI International Mobile Subscriber Identity
INMARSAT International Marine/Maritime Satellite
IP Internet Protocol
IPSEC Internet Protocol Security
ISDN Integrated Services Digital Network
ITM International Telecommunication
-J-
-K-
kOne thousand
kbps One thousand bits per second
kg Abbreviation for kilogram, or one thousand grams.
kHz Kilohertz or one thousand hertz
km Kilometers or one thousand meters
km/h Kilometers Per Hour or one thousand meters per hour.
-L-
LAN Local Area Network
lbs Abbreviation for pound
Li-ION Lithium-Ion
Li-MnO2 Lithium Manganese Dioxide
Li-SO2 Lithium Sulfur Dioxide
LNA Low Noise Amplifier
LOS Line-of-Sight
B-4
RF-7800B
APPENDIX B
R
GLOSSARY - CONTINUED
-M-
mA Milliampere
MHz Abbreviation for Megahertz, or one million cycles per second.
MIL Military
MIL-SPEC Military Specification
MIL-STD Military Standard
mph Miles Per Hour
MS-ISDN Mobile Subscriber Integrated Services Digital Network
MSN Mobile Subscriber Number
mW milli Watt
-N-
NAT Network Address Translation
Ni-Cd Nickel-Cadmium
Ni-MH Nickel-Metal Hydride
-O-
-P-
PDA Personal Data Assistant
PDP Packet Data Protocol
PIN Personal Identification Number
PLL Phase Locked Loop
POTS Plain Old Telephone System
PS Packet Switch
PSTN Public Switched Telephone Network
PUK Personal Unblocking Key
-Q-
QoS Quality-of-Service
-R-
RDI Restricted Digital Information
RF Radio Frequency
B-5
RF-7800B
APPENDIX B
R
GLOSSARY - CONTINUED
-R- (Continued)
RoHS Restriction of Hazardous Substances
RSSI Low Received Signal Strength Indication
Rx Receive
-S-
SATCOM Satellite Communications
SIM Subscriber Identification Module
SOQH SATCOM-on-the-Quick-Halt
SOTM SATCOM-on-the-Move
STE Secure Terminal Equipment
-T-
TCP/IP Transmission Control Protocol/Internet Protocol
TE Terminal Equipment
TOC Tactical Operation Centers
Tx Transmit
-U-
UDI Unrestricted Digital Information
UHF Ultra High Frequency
UMTS Universal Mobile Telecommunications System
USB Universal Serial Bus
USIM UMTS Subscriber Identification Module
-V-
VVolts
VA C Volts Alternating Current
VDC Volts Direct Current
VHF Very High Frequency
VPN Virtual Private Network
B-6
RF-7800B
APPENDIX B
R
GLOSSARY - CONTINUED
-W-
WWatts, West
WEEE Waste from Electrical and Electronic Equipment
-X-
-Z-
RF Communications Division 1680 University Ave Rochester, NY USA 14610½½
Tel: 585-244-5830. Fax: 585-242-4755 www.harris.com
PUBLICATION NUMBER: 10515-0365-4200
APRIL 2009
Rev. -
Tactical Radio Products
RF-7800B-DU024 LAND PORTABLE
RF-7800B-VU104 LAND MOBILE
BROADBAND GLOBAL AREA
NETWORK TERMINAL
OPERATION MANUAL

Navigation menu