Ross AFR-7812C User manual
Ross Video Limited
AFR-7812C
Audio DA Mounting Frame
User Manual
AFR-7812C •Audio DA Mounting Frame User Manual
• Ross Part Number: 7812CDR-004-02
• Release Date: August 2, 2011. Printed in Canada.
The information contained in this manual is subject to change without notice or obligation.
Copyright
© 2011 Ross Video Limited. All rights reserved.
Contents of this publication may not be reproduced in any form without the written permission of
Ross Video Limited. Reproduction or reverse engineering of copyrighted software is prohibited.
Patents
This product is protected by the following US Patents: 4,205,346; 5,115,314; 5,280,346;
5,561,404; 7,034,886; 7,508,455; 7,602,455; 7,834,886; 7,914,332. This product is protected by
the following Canadian Patents: 2039277; 1237518; 1127289. Other patents pending.
Notice
The material in this manual is furnished for informational use only. It is subject to change without
notice and should not be construed as commitment by Ross Video Limited. Ross Video Limited
assumes no responsibility or liability for errors or inaccuracies that may appear in this manual.
Trademarks
• is a trademark of Ross Video Limited.
• Ross, ROSS, ROSS®are registered trademarks of Ross Video Limited.
• All other product names and any registered and unregistered trademarks mentioned in
this guide are used for identification purposes only and remain the exclusive property of
their respective owners.
Important Regulatory and Safety Notices
Before using this product and any associated equipment, refer to the “Important Safety
Instructions” listed below to avoid personnel injury and to prevent product damage.
Products may require specific equipment, and/or installation procedures to be carried out to
satisfy certain regulatory compliance requirements. Notices have been included in this
publication to call attention to these specific requirements.
Symbol Meanings
Important Safety Instructions
1. Read these instructions.
2. Keep these instructions.
3. Heed all warning.
4. Follow all instructions.
5. Do not use this apparatus near water.
6. Clean only with a dry cloth.
7. Do not block any ventilation openings. Install in accordance with the manufacturer’s
instructions.
8. Do not install near any heat sources such as radiators, heat registers, stoves, or other
apparatus (including amplifiers) that produce heat.
The exclamation point within an equilateral triangle is intended to alert the user to the
presence of important operating and maintenance (servicing) instructions in the
literature accompanying the product.
Warning — The symbol with the word “Warning” within the equipment manual
indicates a potentially hazardous situation which, if not avoided, could result in death
or serious injury.
Caution — The symbol with the word “Caution” within the equipment manual
indicates a potentially hazardous situation which, if not avoided, may result in minor
or moderate injury. It may also be used to alert against unsafe practices.
Notice — The symbol with the word “Notice” within the equipment manual indicates
a situation, which if not avoided, may result in major or minor equipment damage or a
situation which could place the equipment in a non-compliant operating state.
Warning Hazardous Voltages — The lightning flash with arrowhead symbol
within an equilateral triangle is intended to alert the user to the presence of
uninsulated “dangerous voltage” within the product's enclosure that may be of
sufficient magnitude to constitute a risk of shock to persons.
ESD Susceptibility — This symbol is used to alert the user that an electrical or
electronic device or assembly is susceptible to damage from an ESD event.
9. Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug
has two blades with one wider than the other. A grounding type plug has two blades and a
third grounding prong. The wide blade or the third prong are provided for your safety. If the
provided plug does not fit into your outlet, consult an electrician for replacement of the
obsolete outlet.
10. Protect the power cord from being walked on or pinched particularly at plugs, convenience
receptacles, and the point where they exit from the apparatus.
11. Only use attachments/accessories specified by the manufacturer.
12. Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or sold
with the apparatus. When a cart is used, use caution when moving the card/apparatus
combination to avoid injury from tip-over.
13. Unplug this apparatus during lightning storms or when unused for long periods of time.
14. Refer all servicing to qualified service personnel. Servicing is required when the apparatus
has been damaged in any way, such as power-supply cord or plug is damaged, liquid has
been spilled or objects have fallen into the apparatus, the apparatus bas been exposed to rain
or moisture, does not operate normally or has been dropped.
15. Do not expose this apparatus to dripping or splashing and ensure that no objects filled with
liquids, such as vases, are placed on the apparatus.
16. To completely disconnect this apparatus from the AC Mains, disconnect the power supply
cord plug from the AC receptacle.
17. The mains plug of the power supply cord shall remain readily operable.
18. To avoid electrical shock, disconnect the A/C power cord before any servicing.
EMC Notices
United States of America
FCC Part 15
This equipment has been tested and found to comply with the limits for a class A Digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference when the equipment is operated in a Commercial environment. This
equipment generates, uses, and can radiate radio frequency energy and, if not installed and used
in accordance with the instruction manual, may cause harmful interference to radio
communications. Operation of this equipment in a residential area is likely to cause harmful
interference in which case the user will be required to correct the interference at his own expense.
Warning — To reduce the risk of fire or electric shock, do not expose this apparatus
to rain or moisture.
Warning — The safe operation of this product requires that a protective earth
connection be provided. A grounding conductor in the equipment's supply cord
provides this protective earth. To reduce the risk of electrical shock to the operator
and service personnel, this ground conductor must be connected to an earthed
ground.
Notice — Changes or modifications to this equipment not expressly approved by
Ross Video Limited could void the user’s authority to operate this equipment.
CANADA
This Class “A” digital apparatus complies with Canadian ICES-003.
Cet appariel numerique de la classe “A” est conforme a la norme NMB-003 du Canada.
EUROPE
This equipment is in compliance with the essential requirements and other relevant provisions of
CE Directive 93/68/EEC.
INTERNATIONAL
This equipment has been tested to CISPR 22:1997 along with amendments A1:2000 and
A2:2002, and found to comply with the limits for a Class A Digital device.
Maintenance/User Serviceable Parts
Routine maintenance to this RossGear product is not required. This product contains no user
serviceable parts. If the module does not appear to be working properly, please contact Technical
Support using the numbers listed under the “Contact Us” section on the last page of this manual.
All RossGear products are covered by a generous 5-year warranty and will be repaired without
charge for materials or labor within this period. See the “Warranty and Repair Policy” section in
this manual for details.
Environmental Information
The equipment that you purchased required the extraction and use of natural
resources for its production. It may contain hazardous substances that could
impact health and the environment.
To avoid the potential release of those substances into the environment and to diminish the need
for the extraction of natural resources, Ross Video encourages you to use the appropriate
take-back systems. These systems will reuse or recycle most of the materials from your
end-of-life equipment in an environmentally friendly and health conscious manner.
The crossed-out wheeled bin symbol invites you to use these systems.
If you need more information on the collection, reuse, and recycling systems, please contact your
local or regional waste administration. You can also contact Ross Video for more information on
the environmental performances of our products.
Notice — This is a Class A product. In domestic environments, this product may
cause radio interference, in which case the user may have to take adequate
measures.
AFR-7812C User Manual (Iss. 02) Installation • 1–1
Installation
In This Chapter
Congratulations on choosing a RossGear AFR-7812C Audio DA Mounting Frame. Your
AFR-7812C is part of a full line of products within the RossGear Terminal Equipment family of
products, backed by Ross Video’s experience in engineering and design expertise since 1974.
Should you have a question pertaining to the installation or operation of your AFR-7812C, please
contact us at the numbers listed on the back cover of this manual. Our technical support staff is
always available for consultation, training, or service.
The following topics are discussed:
• Overview
• Installing the AFR-7812C
• Technical Specifications
1–2 • Installation AFR-7812C User Manual (Iss. 02)
Overview
The design of the mounting frame will more than satisfy the most demanding network
considerations. The frame incorporates efficient ventilation and cooling engineering. The
mounting frame holds twelve amplifier modules and two power supplies.
The frame door is completely removable to provide convenient access in any rack installation
position.
The terminal connectors are of a small pluggable design which allows for individual wiring of
each cable prior to connection to the frame. It is important to refer to the table on the rear of the
frame to determine the proper connections for the Mono or Stereo amplifiers.
The following features are included for the AFR-7812C:
• Accommodates 12 amplifiers in a 2 rack units
• Aluminum construction for increased heat dissipation
• Individual pluggable audio connectors
• Removable frame door for accessibility
• Optional module extender for servicing
• Power switch and fuse is accessible from front of the rack frame
• PowerLock cord retainer mechanism guards against accidental power loss
• 5-year transferable warranty
• RossGear frames also accept Leitch1analog video products
1. Leitch is a trademark of Leitch Technology International Inc.
AFR-7812C User Manual (Iss. 02) Installation • 1–3
Installing the AFR-7812C
This section provides information for installing your AFR-7812C, ensuring proper ventilation,
and cabling your audio input and outputs.
Before You Begin
Before proceeding with the installation, ensure that you review the following notes.
Static Discharge
Throughout this chapter, please heed the following cautionary note:
Unpacking
Unpack each AFR-7812C you received from the shipping container and ensure that all items are
included. If any items are missing or damaged, contact your sales representative or Ross Video.
Mechanical Installation
The AFR-7812C mounts in the rack cabinet by means of four screws through the front mounting
flanges. This should normally be sufficient to carry the load, including weight of cables. In some
cases, (mobile trucks, etc.) it may be desirable to also support the rear of the frame. Rear support
brackets (Ross part #FSB-7110) are available for a nominal cost. The rear support bars can be
attached to the AFR-7812C in six possible positions (Figure 1.1).
Use the following procedure to install the support brackets:
Figure 1.1 Installing the Support Brackets
1. Choose the position that suits the cabinet depth and will give approximately a 0.5”
projection beyond the previously mounted bracket.
2. Using four screws per bracket, as shown in Figure 1.1, attach both bars.
3. Mount the Ross frame to the front rails of the rack cabinet using rack screws.
4. At the rear of the cabinet, slide the bracket slots over the rear of the support bars and
secure to the cabinet rear rails with rack screws.
This completes the procedure for installing the support brackets.
ESD Susceptibility — Static discharge can cause serious damage to sensitive
semiconductor devices. Avoid handling circuit boards in high static environments such as
carpeted areas and when synthetic fiber clothing is worn. Always exercise proper grounding
precautions when working on circuit boards and related equipment.
1–4 • Installation AFR-7812C User Manual (Iss. 02)
Ventilation
To minimize heat buildup and improve module reliability, maintain a blank rack space both above
and below each installed chassis.
Figure 1.2 Frame Stacking
Power Supply PS-7813
The AFR-7812C frames support two independent 20 volt PS-7813 power supplies for
redundancy. Turning the power supply off before inserting or removing it from the frame will
ensure longer connector life.
Audio Input and Output Cables
The frame uses a three-pin, pluggable audio connector. This connector allows each individual
audio input and output connection to be wired prior to connection to the frame.
Use the following procedure to wire your audio input and output cables:
1. Wire the external cables to the pluggable terminal block connectors as outlined in
Figure 1.3. Note that standard practice dictates that to avoid ground loop problems,
cable grounds should be connected to output plugs only.
2. Once the cables are wired, install the connectors according to Figure 1.4. The frame’s
mating terminals are marked for both the 8-output mono and the 4-output stereo
amplifiers.
Figure 1.3 Audio Terminal Block Connectors
Ross
Gear
Cable
Tie Wrap Connecto
r
Polarity Indications
AFR-7812C User Manual (Iss. 02) Installation • 1–5
This completes the procedure for wiring your audio input and output cables.
Figure 1.4 Frame Mating Terminals
OUT 5 OUT 4OUT 6OUT 7OUT 8
OUT 3 OUT 2
A INA OUT 1A OUT 2A OUT 3
A OUT 4
MONO
MONOOUT 1 IN
A
B
STEREO
B INB OUT 1B OUT 2B OUT 3B OUT 4 4
1–6 • Installation AFR-7812C User Manual (Iss. 02)
Technical Specifications
This section provides technical specifications for the AFR-7812C.
Table 1.1 AFR-7812C Technical Specifications
Category Parameter Specification
Power Supplies
Rated Supply Voltage 100-240VAC
Mains Frequency 50-60Hz
Rated Input Current 1.2A
Power Consumption 60W
Output Voltage +/- 20V
Output Current 1.0A
Line Regulation 350mV change over full input range
Output Ripple <60mVpp
For safety reasons, Ross power supplies do not fit into the rack frames of other manufacturers.
Rack Frame
Mechanical
Height 3.5” (88mm)
Width 19” (483mm)
Depth 15.75” (400mm)
Weight average for all
amplifiers installed approx. 13lbs (5.9kg)
Environmental
Temperature Equipment is designed to operate in ambient
temperature ranges from 0°C to 35°C
Humidity <95% non-condensing
AFR-7812C User Manual (Iss. 02) Service Information • 2–1
Service Information
In This Chapter
This chapter contains the following sections:
• Warranty and Repair Policy
Note — All Ross Video Limited terminal equipment frames include one power
supply. A redundant power supply may be installed in all two rack unit frames, if
required.
2–2 • Service Information AFR-7812C User Manual (Iss. 02)
Warranty and Repair Policy
The AFR-7812C is warranted to be free of any defect with respect to performance, quality,
reliability, and workmanship for a period of FIVE (5) years from the date of shipment from our
factory. In the event that your AFR-7812C proves to be defective in any way during this warranty
period, Ross Video Limited reserves the right to repair or replace this piece of equipment with a
unit of equal or superior performance characteristics.
Should you find that this AFR-7812C has failed after your warranty period has expired, we will
repair your defective product should suitable replacement components be available. You, the
owner, will bear any labor and/or part costs incurred in the repair or refurbishment of said
equipment beyond the FIVE (5) year warranty period.
If this is a manual for a RossGear product from our Analog Terminal Equipment product line, you
will find it provides all pertinent information for the safe installation and operation of your
RossGear product.
In no event shall Ross Video Limited be liable for direct, indirect, special, incidental, or
consequential damages (including loss of profits) incurred by the use of this product. Implied
warranties are expressly limited to the duration of this warranty.
This AFR-7812C User Manual provides all pertinent information for the safe installation and
operation of your RossGear Product. Ross Video policy dictates that all repairs to the AFR-7812C
are to be conducted only by an authorized Ross Video Limited factory representative. Therefore,
any unauthorized attempt to repair this product, by anyone other than an authorized Ross Video
Limited factory representative, will automatically void the warranty. Please contact Ross Video
Technical Support for more information.
In Case of Problems
Should any problem arise with your AFR-7812C, please contact the Ross Video Technical
Support Department. (Contact information is supplied at the end of this publication.)
A Return Material Authorization number (RMA) will be issued to you, as well as specific
shipping instructions, should you wish our factory to repair your AFR-7812C. If required, a
temporary replacement frame will be made available at a nominal charge. Any shipping costs
incurred will be the responsibility of you, the customer. All products shipped to you from Ross
Video Limited will be shipped collect.
The Ross Video Technical Support Department will continue to provide advice on any product
manufactured by Ross Video Limited, beyond the warranty period without charge, for the life of
the equipment.
Notes:
Contact Us
Contact our friendly and professional support representatives for the following:
• Name and address of your local dealer
• Product information and pricing
• Technical support
• Upcoming trade show information
Visit Us
Please visit us at our website for:
• Company information
• Related products and full product lines
• On-line catalog
•News
• Testimonials
Ross Video Product Number: 7812CDR-004-02
PHONE
General Business Office
and Technical Support 613 • 652 • 4886
After Hours Emergency 613 • 349 • 0006
Fax 613 • 652 • 4425
E-MAIL
General Information solutions@rossvideo.com
POSTAL
SERVICE
Ross Video Limited
8 John Street,
Iroquois, Ontario, Canada
K0E 1K0
Ross Video Incorporated
P.O. Box 880,
Ogdensburg, New York, USA
13669-0880
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