
www.aja.com
Installation and Operation
Guide
Because it matters.
R20DA
1x8 SD-SDI
Distribution Amplifier, Multi-format
R-series Card Module
Published: 6/30/10

2
Trademarks
Notice
Contacting Support
®
AJA
are trademarks of AJA Video, Inc. HDMI, the HDMI logo and High-Definition Multimedia Interface are
trademarks or registered trademarks of HDMI Licensing LLC. DVI is a registered trademark of DDWG.
All other trademarks are the property of their respective holders.
Copyright © 2010 AJA Video, Inc. All rights reserved. All information in this manual is subject to
change without notice. No part of the document may be reproduced or transmitted in any form, or by
any means, electronic or mechanical, including photocopying or recording, without the express
written permission of AJA Inc.
To contact AJA Video for sales or support, use any of the following methods:
180 Litton Drive, Grass Valley, CA. 95945 USA
Telephone: 800.251.4224 or 530.274.2048
Fax: 530.274.9442
Web: http://www.aja.com
Support Email: support@aja.com
Sales Email: sales@aja.com
When calling for support, have all information at hand prior to calling.
®
, KONA
, Ki Pro®, and XENA
®
are registered trademarks of AJA Video, Inc. FiDO™, Io HD
™
and Io
™
Limited Warranty
AJA Video warrants that this product will be free from defects in materials and workmanship for a
period of five years from the date of purchase. If a product proves to be defective during this warranty
period, AJA Video, at its option, will either repair the defective product without charge for parts and
labor, or will provide a replacement in exchange for the defective product.
In order to obtain service under this warranty, you the Customer, must notify AJA Video of the defect
before the expiration of the warranty period and make suitable arrangements for the performance of
service. The Customer shall be responsible for packaging and shipping the defective product to a
designated service center nominated by AJA Video, with shipping charges prepaid. AJA Video shall
pay for the return of the product to the Customer if the shipment is to a location within the country in
which the AJA Video service center is located. Customer shall be responsible for paying all shipping
charges, insurance, duties, taxes, and any other charges for products returned to any other locations.
This warranty shall not apply to any defect, failure or damage caused by improper use or improper or
inadequate maintenance and care. AJA Video shall not be obligated to furnish service under this
warranty a) to repair damage resulting from attempts by personnel other than AJA Video
representatives to install, repair or service the product, b) to repair damage resulting from improper
use or connection to incompatible equipment, c) to repair any damage or malfunction caused by the
use of non-AJA Video parts or supplies, or d) to service a product that has been modified or integrated
with other products when the effect of such a modification or integration increases the time or
difficulty of servicing the product.
THIS WARRANTY IS GIVEN BY AJA VIDEO IN LIEU OF ANY OTHER WARRANTIES, EXPRESS OR IMPLIED.
AJA VIDEO AND ITS VENDORS DISCLAIM ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR
FITNESS FOR A PARTICULAR PURPOSE. AJA VIDEO’S RESPONSIBILITY TO REPAIR OR REPLACE
DEFECTIVE PRODUCTS IS THE WHOLE AND EXCLUSIVE REMEDY PROVIDED TO THE CUSTOMER FOR
ANY INDIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES IRRESPECTIVE OF WHETHER AJA
VIDEO OR THE VENDOR HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.

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Introduction
Features
AJA R20DA 1x8 SDI DA User Manual
The R20DA is a multi-format, 1x8 SDI Distribution Amplifier. The SDI input is reclocked and equalized to 300 meters of cable. In addition, the multi-standard
feature allows the R20DA to automatically adapt to 143, 177, 270 or 360 Mb SDI
inputs. The R20DA is compatible with AJA’s FR1 or FR2 frames.
1
3
Block Diagram
R20DA Card Module, Side View
Re-Clocking, Equalizing SDI DA
SDI Input
8 SDI Outputs
Multi-Standard
!

1.
2.
3.
4.
4
I/O Connections
5.
SDI
SDI
Out 7
SDI
Out 8
SDI
Out 3
Out 5
J4
J6
J8
J9
SDI
Out 6
J5
J7
J2
J3
SDI
Out 4
SDI
Out 1
J1
SD
SDI In
SDI
Out 2
SDI
Out 1
SDI
Out 3
SDI
Out 5
SDI
Out 7
SDI In
J1
J2
J4
J6
J8
SDI
Out 2
J3
SDI
Out 4
J5
SDI
Out 6
J7
SDI
Out 8
J9
Installation
FR1 Frame Layout
R20DA Rear Panel
FR2 Frame Layout
R20DA Rear Panel
FR1 and FR2 BNC Connector Assignments, R20DA Card Module
When the R20DA module is installed in an AJA FR1 or FR2 frame, a corresponding
group of 9 BNCs on the rear panel then provide I/O for the module. The
illustration above shows the connector assignments for both the FR1 and FR2
when used with the R20DA.
Typically, R20DA installation consists of the following:
disconnect power from the frame (remove line cord)
remove the FR1/FR2 front panel
install R20DA card module
replace the FR1/FR2 front panel
apply power to the frame by connecting a north american-style power
cord from the frame to mains power (90 to 260 VAC)
Warning!
Ensure Mains Power is disconnected before installing the FR1 or FR2 frame Rseries modules into the frame, or installing and removing options. If a Mains
switch is not provided, the power cord(s) of this equipment provide the
means of disconnection. The socket outlet must be installed near the
equipment and must be easily accessible.
Warning!
FR2 Dual Power Cord Notice—please read this. To reduce the risk of electrical
shock, disconnect both power cords before servicing equipment.
!
Caution!
The FR1/FR2 front fan door is heavy and is not hinged. Remove with Caution.
Instructions for removing the frame front door for module installation is
discussed in the FR1/FR2 User Manual.