Contents
- 1. Manual 1
- 2. Manual 2
Manual 2
Product Safety Manual
14221-1100-2020
Aug/11
This booklet contains important safety information regarding
specific absorption rate (SAR) and RF exposure limits included in
United States and international standards. Read the information
in this booklet before operating your radio.
XG-75 Series
Portable Radios
2
14221-1100-2020
REV
DATE
DESCRIPTION
-
Aug/11
Initial release
ACKNOWLEDGEMENTS
The software contained in this device is copyrighted by Harris Corporation. Unpublished rights
are reserved under the copyright laws of the United States.
This device is made under license under one or more of the following US patents: 4,590,473;
4,636,791; 5,148,482; 5,185,796; 5,271,017; 5,377,229; 4,716,407; 4,972,460; 5,502,767;
5,146,497; 5,164,986; 5,185,795; 5,226,084; 5,247,579; 5,491,772; 5,517,511; 5,630,011;
5,649,050; 5,701,390; 5,715,365; 5,754,974; 5,826,222; 5,870,405; 6,161,089; and 6,199,037 B1.
DVSI claims certain rights, including patent rights under aforementioned U.S. patents, and under
other U.S. and foreign patents and patents pending. Any use of this software or technology
requires a separate written license from DVSI.
CREDITS
Harris, EDACS, OpenSky, and assuredcommunications are registered trademarks and ProVoice is
a trademark of Harris Corporation.
RBRC and 1-800-8-BATTERY are registered trademarks of Rechargeable Battery Recycling
Corporation.
AMBE is a registered trademark and IMBE, AMBE+, and AMBE+2 are trademarks of Digital
Voice Systems, Inc.
All other product and brand names are trademarks, registered trademarks, or service marks of
their respective holders.
NOTICE
The material contained herein is subject to U.S. export approval. No export or re-export is
permitted without written approval from the U.S. Government. Rated: EAR99; in accordance with
U.S. Dept. of Commerce regulations 15CFR774, Export Administration Regulations.
Information and descriptions contained herein are the property of Harris Corporation. Such
information and descriptions may not be copied or reproduced by any means, or disseminated or
distributed without the express prior written permission of Harris Corporation, PSPC Division,
221 Jefferson Ridge Parkway, Lynchburg, VA 24501.
This product conforms to the European Union WEEE Directive 2002/96/EC.
Do not
dispose of this product in a public landfill.
This product should be taken to a recycling
center at the end of its life.
The voice coding technology embodied in this product is protected by intellectual property rights
including patent rights, copyrights, and trade secrets of Digital Voice Systems, Inc. The user of
this technology is explicitly prohibited from attempting to decompile, reverse engineer, or
disassemble the Object Code, or in any other way convert the Object Code into human-readable
form.
Repairs to this equipment should be made only by an authorized service technician or facility
designated by the supplier. Any repairs, alterations, or substitution of recommended parts made
by the user to this equipment not approved by the manufacturer could void the user’s authority to
operate the equipment in addition to the manufacturer’s warranty.
This manual is published by Harris Corporation, without any warranty. Improvements and changes to this
manual necessitated by typographical errors, inaccuracies of current information, or improvements to programs
and/or equipment, may be made by Harris Corporation, at any time and without notice. Such changes will be
incorporated into new editions of this manual. No part of this manual may be reproduced or transmitted in any
form or by any means, electronic or mechanical, including photocopying and recording, for any purpose,
without the express written permission of Harris Corporation.
Copyright © 2011 Harris Corporation.
14221-1100-2020
3
TABLE OF CONTENTS Page
1. SAFETY SYMBOL CONVENTIONS ........................................... 4
2. SAFETY TRAINING INFORMATION ........................................ 5
2.1 RF EXPOSURE GUIDELINES ...................................................... 5
2.2 ELECTROMAGNETIC INTERFERENCE/COMPATIBILITY .... 6
2.3 REGULATORY APPROVALS ..................................................... 7
3. OPERATING TIPS .......................................................................... 7
4. EFFICIENT RADIO OPERATION ............................................... 8
4.1 ANTENNA CARE AND REPLACEMENT .................................. 8
4.2 ELECTRONIC DEVICES .............................................................. 8
5. OPTIONS AND ACCESSORIES ................................................... 9
6. BATTERY PACKS ........................................................................ 10
6.1 CONDITIONING NIMH BATTERY PACKS ............................. 10
6.2 CONDITIONING LI-ION BATTERY PACKS ........................... 10
6.3 ADDITIONAL INFORMATION ................................................. 10
6.4 BATTERY DISPOSAL ................................................................ 11
7. IMMERSIBLE XG-75 PREVENTIVE MAINTENANCE ......... 11
8. TECHNICAL ASSISTANCE ........................................................ 12
9. WARRANTY .................................................................................. 12
Harris Corporation, Public Safety and Professional Communications (PSPC) Business continually
evaluates its technical publications for completeness, technical accuracy, and organization. You
can assist in this process by submitting your comments and suggestions to the following:
Harris Corporation
PSPC Business or fax your comments to: 1-434-455-6851
Technical Publications
221 Jefferson Ridge Parkway or e-mail us at: PSPC_techpubs@harris.com
Lynchburg, VA 24501
4
14221-1100-2020
1. SAFETY SYMBOL CONVENTIONS
The following conventions are used to alert the user to general safety
precautions that must be observed during all phases of operation, service, and
repair of this product. Failure to comply with these precautions or with
specific warnings elsewhere violates safety standards of design, manufacture,
and intended use of the product. Harris Corporation assumes no liability for
the customer's failure to comply with these standards.
WARNING
The WARNING symbol calls attention to a procedure,
practice, or the like, which, if not correctly performed or
adhered to, could result in personal injury. Do not proceed
beyond a WARNING symbol until the conditions identified
are fully understood or met.
CAUTION
The CAUTION
symbol calls attention to an operating
procedure, practice, or the like, which, if not performed
correctly or adhered to, could result in a risk of danger, damage
to the equipment, or severely degrade the equipment
performance.
NOTE
The NOTE
symbol calls attention to supplemental
information, which may improve system performance or
clarify a process or procedure.
The ESD symbol calls attention to procedures, practices, or the
like, which could expose equipment to the effects of Electro-
Static Discharge. Proper precautions must be taken to prevent
ESD when handling circuit modules.
14221-1100-2020
5
2. SAFETY TRAINING INFORMATION
WARNING
The Harris Corporation XG-75 portable radio generates
RF electromagnetic energy during transmit mode. This
radio is designed for and classified as “Occupational Use
Only,” meaning it must be used only during the course of
employment by individuals aware of the hazards and the
ways t
o minimize such hazards. This radio is NOT
intended for use by the “General Population” in an
uncontrolled environment.
The XG-75 portable radio has been tested and complies with the FCC RF
exposure limits for “Occupational Use Only.” In addition, this radio complies
with the following Standards and Guidelines with regard to RF energy and
electromagnetic energy levels and evaluation of such levels for exposure to
humans:
• FCC OET Bulletin 65 Edition 97-01 Supplement C, Evaluating
Compliance with FCC Guidelines for Human Exposure to Radio
Frequency Electromagnetic Fields.
• American National Standards Institute (C95.1 – 1992), IEEE Standard for
Safety Levels with Respect to Human Exposure to Radio Frequency
Electromagnetic Fields, 3 kHz to 300 GHz.
• American National Standards Institute (C95.3 – 1992), IEEE
Recommended Practice for the Measurement of Potentially Hazardous
Electromagnetic Fields – RF and Microwave.
2.1 RF EXPOSURE GUIDELINES
CAUTION
To ensure that exposure to RF electromagnetic energy is
within the FCC
allowable limits for occupational use,
always adhere to the following guidelines:
• DO NOT operate the radio without a proper antenna attached, as this may
damage the radio and may also cause the FCC RF exposure limits to be
exceeded. A proper antenna is the antenna supplied with this radio by
Harris or an antenna specifically authorized by Harris Corporation for use
with this radio.
• DO NOT transmit for more than 50% of total radio use time (“50% duty
cycle”). Transmitting more than 50% of the time can cause FCC RF
exposure compliance requirements to be exceeded. The radio is
transmitting when the “TX” indicator appears in the display. The radio
will transmit by pressing the “PTT” (Push-To-Talk) button.
6
14221-1100-2020
• ALWAYS transmit using low power when possible. In addition to
conserving battery charge, low power can reduce RF exposure.
• ALWAYS use Harris authorized accessories (antennas, batteries, belt
clips, speaker/mics, etc). Use of unauthorized accessories may cause the
FCC Occupational/Controlled Exposure RF compliance requirements to
be exceeded.
• As noted in Table 2-1, ALWAYS keep the device and its antenna AT
LEAST 1.6 cm (0.63 inches) from the body and at least 2.5 cm (1.00
inch) from the face when transmitting to ensure FCC RF exposure
compliance requirements are not exceeded. However, to provide the best
sound quality to the recipients of your transmission, Harris Corporation
recommends you hold the microphone at least 5 cm (2 inches) from your
mouth, and slightly off to one side.
Table 2-1: RF Exposure Compliance Tested Distances
RADIO FREQUENCY
BAND
TESTED DISTANCES
(worst case scenario)
Body Face
VHF (136 - 174 MHz)
1.6 cm
2.5 cm
UHF-L (378-403 MHz)
1.6 cm
2.5 cm
Table 2-2: Distance from Body for Different Carrying Options
CARRYING CONFIGURATION
TESTED DISTANCES (WORST
CASE FROM BODY)
Belt Loop
4.2 cm
Belt Clip
1.8 cm
Leather Case with Belt Loop
5.2 cm
Nylon Case with Belt Loop
4.5 cm
Shoulder Strap with D-clip
3.0 cm
Speaker-microphone with
antenna
1.6 cm
The information in this section provides the information needed to make the
user aware of a RF exposure, and what to do to assure that this radio operates
within the FCC RF exposure limits of this radio.
2.2 ELECTROMAGNETIC
INTERFERENCE/COMPATIBILITY
During transmissions, Harris radios generate RF energy that can possibly
cause interference with other devices or systems. To avoid such interference,
turn off the radios in areas where signs are posted to do so. DO NOT operate
the transmitter in areas that are sensitive to electromagnetic radiation such as
hospitals, aircraft, and blasting sites.
14221-1100-2020
7
2.3 REGULATORY APPROVALS
2.3.1 Part 15
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.
2.3.2 Industry Canada
This device complies with Industry Canada license-exempt RSS standard(s).
Operation is subject to the following two conditions: (1) this device may not
cause interference, and (2) this device must accept any interference, including
interference that may cause undesired operation of the device.
Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux
appareils radio exempts de licence. L'exploitation est autorisée aux deux
conditions suivantes : (1) l'appareil ne doit pas produire de brouillage, et (2)
l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi,
même si le brouillage est susceptible d'en compromettre le fonctionnement.
3. OPERATING TIPS
Antenna location and condition are important when operating a portable radio.
Operating the radio in low lying areas or terrain, under power lines or bridges,
inside of a vehicle or in a metal framed building can severely reduce the range
of the unit. Mountains can also reduce the range of the unit.
In areas where transmission or reception is poor, some improvement may be
obtained by ensuring the antenna is vertical. Moving a few yards in another
direction or moving to a higher elevation may also improve communications.
Vehicular operation can be aided with the use of an externally mounted
antenna.
Battery condition is another important factor in the trouble free operation of a
portable radio. Always properly charge the batteries.
8
14221-1100-2020
4. EFFICIENT RADIO OPERATION
Keep the antenna in a vertical position when receiving or transmitting a
message.
WARNING
Do NOT hold onto the antenna when the radio is powered
on.
4.1 ANTENNA CARE AND REPLACEMENT
WARNING
Always keep the antenna at least 0.43 inches (1.1 cm) away
from the body and 1.0 inch (2.5 cm) from the face when
transmitting to ensure FCC RF exposure compliance
requirements are not exceeded.
WARNING
Do not use the portable radio with a damaged or missing
antenna. A minor burn may result if skin comes into
contact with a damaged antenna.
Replace a damaged
antenna immediately. Operating a portable radio with the
antenna missing could cause personal injury, damage the
radio, and may violate FCC regulations.
WARNING
Use only supplied or approved antennas. Use of
unauthorized antennas, modifications,
or attachments
could cause damage to the radio unit and may violate FCC
regulations.
4.2 ELECTRONIC DEVICES
CAUTION
RF energy from portable radios may affect some electronic
equipment. Most modern electronic equipment in cars,
hospitals, homes, etc. are shielded from RF energy. However,
in areas in which you are instructed to turn off two-way radio
equipment, always observe the rules. If in doubt, turn it off!
4.2.1 Aircraft
WARNING
Always turn off a portable radio before boarding any
aircraft!
• Use it on the ground only with crew permission.
• DO NOT use while in-flight!!
14221-1100-2020
9
4.2.2 Electric Blasting Caps
WARNING
To prevent accidental detonation of electric blasting caps,
DO NOT use two-way radios within 1000 feet of blasting
operations. Always obey the "Turn Off Two-Way Radios"
signs posted where electric blasting caps are being used.
(OSHA Standard: 1926.900)
4.2.3 Potentially Explosive Atmospheres
WARNING
Areas with potentially explosive atmospheres are often,
but not always, clearly marked. These may be fuelling
areas, such as gas stations, fuel or chemical transfer or
storage facilities, and areas where the air contains
chemicals or particles, such as grain, dust, or metal
powders.
Sparks in such areas could cause an explosion or fire
resulting in bodily injury or even death.
Turn OFF two-
way radios when in any area with a
potentially explosive atmosphere. It is rare, but not
impossible that a radio or its accessories could generate
sparks.
5. OPTIONS AND ACCESSORIES
A complete list of Options and Accessories approved for use with the XG-75
portable radio can be found online in the Operator’s Manual 14221-1100-2010
at www.pspc.harris.com. Also reference the maintenance manual or Harris
Corporation’s Products and Services Catalog for all available options and
accessories, including those items that do not adversely affect the RF energy
exposure.
WARNING
Always use Harris authorized accessories (antennas,
batteries, belt clips, speaker/mics, etc). Use of unauthorized
accessories may cause the FCC Occupational/Controlled
Exposure RF compliance requirements to be exceeded.
CAUTION
Always
use the correct options and accessories (battery,
antenna, speaker/mic, etc.) for the radio. Immersion rated
options must be used with an immersion rated radio.
Intrinsically safe options must be used with intrinsically safe
radios.
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14221-1100-2020
6. BATTERY PACKS
The XG-75 series portable radios use rechargeable, recyclable Nickel Metal
Hydride (NiMH) and Lithium Ion (Li-Ion) battery packs. Please follow the
directions below to maximize the useful life of each type of battery pack.
WARNING
Do not disassemble or modify Lithium Ion battery packs.
The Lithium Ion battery packs are equipped with built-in
safety and protection features. Should these features be
disabled or tampered with in any way, the battery pack can
leak electrolyte, overheat, emit smoke, burst, and/or ignite.
WARNING
If the battery pack is ruptured or is leaking electrolyte
that results in skin or eye contact with the electrolyte,
immediately flush the affected area with water. If the
battery electrolyte gets in the eyes, flush with water for 15
minutes and consult a physician immediately.
6.1 CONDITIONING NIMH BATTERY PACKS
Condition a new NiMH battery pack before putting into use. This also applies
to rechargeable NiMH battery packs that have been stored for long periods
(weeks, months, or longer). Conditioning requires fully charging and fully
discharging the battery pack three (3) times using the tri-chemistry charger.
The first time the battery pack is put into the charger, this unit will condition
Nickel-based battery packs by automatically charging and discharging
(cycling) the battery. Refer to the appropriate charger manual for details.
CAUTION
Failure to properly condition NiMH battery packs before initial
use will result in shortened performance by the battery.
6.2 CONDITIONING LI-ION BATTERY PACKS
Lithium Ion battery packs do not suffer from memory effect and therefore do
not require conditioning.
CAUTION
Always use Harris authorized chargers and conditioners. Use
of unauthorized chargers and conditioners may void the
warranty.
6.3 ADDITIONAL INFORMATION
For more information regarding the proper care of portable radio battery packs
or establishing a battery maintenance program, refer to ECR-7367 which may
be ordered by calling toll free 1-800-368-3277, then select option 7.
14221-1100-2020
11
6.4 BATTERY DISPOSAL
CAUTION
In no instance should a battery pack be incinerated. Disposing
of a battery pack by burning will cause an explosion.
RECHARGEABLE BATTERY PACK DISPOSAL – The
product you have purchased contains a rechargeable battery
pack. The battery pack is recyclable. At the end of its useful
life, under various state and local laws, it may be illegal to
dispose of this battery pack into the municipal waste stream.
Check with your local solid waste officials for details in your
area for recycling options or proper disposal. Canadian and
U.S. users may call Toll Free 1-800-8-BATTERY® for
information and/or procedures for returning rechargeable
batteries in your locality.
7. IMMERSIBLE XG-75 PREVENTIVE
MAINTENANCE
Preventive Maintenance for Immersion-Rated Radios
CAUTION
XG-75 model radios with Immersion Option MAEV-PKGMR
must be serviced by a service center authorized and certified by
Harris to perform the necessary tests to verify watertight
integrity. As part of a thorough preventive maintenance plan,
Harris Corporation recommends Immersion-Rated XG-75
portable radios, at a minimum, be tested and re-certified on an
annual basis. Harris Corporation further recommends that the
radios be tested on or close to the anniversary of the ship date
printed on the Model Number label on the back of the radio.
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14221-1100-2020
8. TECHNICAL ASSISTANCE
The Technical Assistance Center's (TAC’s) resources are available to help
with overall system operation, maintenance, upgrades and product support.
TAC is your point of contact when answers are needed to technical questions.
Product specialists, with detailed knowledge of product operation,
maintenance, and repair, provide technical support via a toll-free (in North
America) telephone number. Support is also available through mail, fax and
e-mail.
For more information about technical assistance services, contact your sales
representative, or call the Technical Assistance Center directly at:
North America: 1-800-528-7711
International: 1-434-385-2400
Fax: 1-434-455-6712
E-mail: PSPC_tac@harris.com
9. WARRANTY
Please register this product within 10 days of purchase. Registration validates
the warranty coverage, and enables Harris to contact you in case of any safety
notifications issued for this product.
Registration can be made on-line at www.pspc.harris.com/CustomerService.
14221-1100-2020
13
RECHARGEABLE BATTERY WARRANTY
A. Harris Corporation, a Delaware Corporation, through its RF
Communications Division (hereinafter "Seller") warrants to the original
purchaser for use (hereinafter "Buyer") that nickel-cadmium, nickel-
metal hydride, lithium-ion, and lithium-
polymer batteries supplied by
Seller shall be free from defects in material and workmanship, and shall
conform to its published specifications for a period of twelve (12) months
from the date of purchase.
B. For purposes of this warranty, batteries shall be deemed defective if (1)
the battery capacity is less than 80% rated capacity, or (2) the battery
develops leakage.
C. If any battery fails to meet the foregoing warranty, Seller shall correct
the failure by issuing a replacement battery upon receipt of the defective
battery at an Authorized Service Center (ASC) or Seller factory (for
OpenSky® Equipment only).
D.
Replacement batteries shall be warranted only for the remaining
unexpired warranty period of the original battery. This warranty becomes
void if:
1. The battery has been subjected to any kind of misuse, detrimental
exposure, or has been involved in an accident.
2. The battery is used in equipment or service other than the radio
equipment for which it is specified.
E. The preceding paragraphs set forth the exclusive remedies for claims
based upon defects in or non-conformity of any battery, whether the
claim is in contract, warranty, tort (including negligence), strict liability or
otherwise, and however instituted. Upon the expiration of the warranty
period, all such liability shall terminate. The foregoing warranties are
exclusive and in lieu of all o
ther warranties, whether oral, written,
expressed, implied or statutory. NO IMPLIED OR STATUTORY
WARRANTIES OF MERCHANTABILITY OR FITNESS FOR
PARTICULAR PURPOSE SHALL APPLY. IN NO EVENT SHALL THE
COMPANY BE LIABLE FOR ANY INCIDENTAL, CONSEQUENTIAL,
SPECIAL, INDIRECT OR EXEMPLARY DAMAGES.
This warranty applies only within the United States.
To obtain the name and address of an Authorized Service Center (ASC), ask
your salesperson, or call one of the factory number(s) printed at the bottom
of this page.
Harris Corporation Harris Corporation
RF Communications Division RF Communications Division
221 Jefferson Ridge Parkway 1680 University Avenue
Lynchburg, VA 24501 Rochester, NY 14610
1-800-528-7711 1-585-244-5830
ECR-7048D
14
14221-1100-2020
WARRANTY
A. Harris Corporation, a Delaware Corporation, through its
RF Communications Division
(hereinafter "Seller") warrants to the original purchaser for use (hereinafter "Buyer") that
Equipment manufactured by or for the Seller shall be free from defects in materi
al and
workmanship, and shall conform to its published specifications. With respect to all non
-
Seller Equipment, Seller gives no warranty, and only the warranty, if any, given by the
manufacturer shall apply. Rechargeable batteries are excluded from this
warranty but
are warranted under a separate Rechargeable Battery Warranty (ECR-7048).
B.
Seller’s obligations set forth in Paragraph C below shall apply only to failures to meet the
above warranties occurring within the following periods of time from date
of sale to the
Buyer and are conditioned on Buyer’s giving written notice to Seller within thirty (30)
days of such occurrence:
1. for fuses and non-rechargeable batteries, operable on arrival only.
3. for parts and accessories (except as noted in B.1), ninety (90) days.
4. for P7300, P7200, P7100IP, P5400, P5300, P5200, P5100, P3300, M7300, M7200
(including V-TAC), M7100IP
, M5300 and M3300 radios, two (2) years, effective
10/01/2007.
5. for Unity® XG-100P, three (3) years.
6. for all other equipment of Seller’s manufacture, one (1) year.
C.
If any Equipment fails to meet the foregoing warranties, Seller shall correct the failure at
its option (i) by repairing any defective or damaged part or parts thereof, (ii) by making
available at Seller’s factory any necessary rep
aired or replacement parts, or (iii) by
replacing the failed Equipment with equivalent new or refurbished Equipment. Any
repaired or replacement part furnished hereunder shall be warranted for the remainder
of the warranty period of the Equipment in which
it is installed. Where such failure
cannot be corrected by Seller’s reasonable efforts, the parties will negotiate an equitable
adjustment in price. Labor to perform warranty service will be provided at no charge
during the warranty period only for the Equ
ipment covered under Paragraph B.3 and
B.4. To be eligible for no-
charge labor, service must be performed at Seller’s factory, by
an Authorized Service Center (ASC) or other Servicer approved for these purposes
either at its place of business during normal
business hours, for mobile or personal
equipment, or at the Buyer’s location, for fixed location equipment. Service on fixed
location equipment more than thirty (30) miles from the Service Center or other
approved Servicer’s place of business will include a charge for transportation.
D.
Seller’s obligations under Paragraph C shall not apply to any Equipment, or part thereof,
which (i) has been modified or otherwise altered other than pursuant to Seller’s written
instructions or written approval or, (ii) is
normally consumed in operation or, (iii) has a
normal life inherently shorter than the warranty periods specified in Paragraph B, or (iv)
is not properly stored, installed, used, maintained or repaired, or, (v) has been subjected
to any other kind of misu
se or detrimental exposure, or has been involved in an accident.
E.
The preceding paragraphs set forth the exclusive remedies for claims based upon
defects in or nonconformity of the Equipment, whether the claim is in contract, warranty,
tort (including ne
gligence), strict liability or otherwise, and however instituted. Upon the
expiration of the warranty period, all such liability shall terminate. The foregoing
warranties are exclusive and in lieu of all other warranties, whether oral, written,
expressed,
implied or statutory. NO IMPLIED OR STATUTORY WARRANTIES OF
MERCHANTABILITY OR FITNESS FOR PARTICULAR PURPOSE SHALL APPLY. IN
NO EVENT SHALL THE SELLER BE LIABLE FOR ANY INCIDENTAL,
CONSEQUENTIAL, SPECIAL, INDIRECT OR EXEMPLARY DAMAGES.
This warranty applies only within the United States.
Harris Corporation Harris Corporation
RF Communications Division RF Communications Division
221 Jefferson Ridge Parkway 1680 University Avenue
Lynchburg, VA 24501 Rochester, NY 14610
1-800-528-7711 1-585-244-5830
ECR-7047L
14221-1100-2020
15
NOTES
Public Safety and Professional Communications
221 Jefferson Ridge Parkway | Lynchburg, VA USA 24501
www.pspc.harris.com | 1-800-528-7711