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Analog/Digital Summing Audio Monitor
with Eight Analog Inputs on DB-25, Eight AES/EBU Inputs
on Four BNC, 8-Channels summed to Mono or Stereo,
Eight Volume Controls, Eight Digital/Analog switches,
Stereo Speakers, Power LED, and Headphone Jack
Title and Contents ...............................................................
Important Safety Instructions and Introduction ....................................
Description and Features .......................................................................
Applications and Specifi cations ...........................................................
Installation .............................................................................................
Section 2: Operation ...........................................................
Front Panel Features .............................................................................
Rear Panel Features ...............................................................................
Section 2: Technical information ....................................
Settings ..................................................................................................
VMDA-SUM8 Interconnect Block Diagram ........................................
© 2006 Wohler Technologies Inc. ALL rights reserved
VMDA-SUM8
(Document P/N 821649 Rev-A)
User Manual
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Summary of Contents for Wohler VMDA-SUM8
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Page 1: Table Of Contents
Section 2: Operation ............Front Panel Features ................Rear Panel Features ................Section 2: Technical information ........Gain Calibration, Mute on Data, V-Bit Error/Mute, and Mono/Stereo Settings ....................VMDA-SUM8 Interconnect Block Diagram ........© 2006 Wohler Technologies Inc. ALL rights reserved... - Page 2 Introduction Congratulations on your selection of a Wohler Technologies product. We are confident it represents the best performance and value available, and we guarantee your satisfaction with it. If you have questions or comments you may contact us at: Wohler Technologies, Inc.
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Page 3: Section 1: General Features And Specifi Cations
VMDA-SUM8 User Manual P/N 821649 Rev-A Section 1 General Features and Specifi cations Description Features Applications General Specifi cations Installation © 2006 Wohler Technologies, Inc. ALL rights reserved... - Page 4 VMDA-SUM8 Front Panel Description The VMDA-SUM8 analog/digital summing audio monitor provides self-powered, stereo or monaural monitor- ing in a single (1U) industry standard rack-space mount with a depth of only 4.5 inches. A total of eight mon- aural or four stereo channels may be summed together and monitored from the two speakers on the front panel.
- Page 5 The VMDA-SUM8 unit is ideally suited for use in VTR bays, mobile production vehicles, teleconferencing installations, multimedia systems, satellite links and cable TV facilities, and on-air radio studios. Designed and manufactured in the U.S., the VMDA-SUM8 is backed by a strong warranty and a satisfaction guaranteed return policy.
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Page 6: Installation
Connection of the audio feeds is straightforward. Please refer to the system interconnect block diagram on page 15 for clarifi cation of the general signal paths into and out of the VMDA-SUM8 unit. Care should be exercised to avoid mismatched cable types and other similar causes of undesired refl ections in RF signal systems. -
Page 7: Section 2: Operation
VMDA-SUM8 User Manual P/N 821649 Rev-A Section 2 Operation Front Panel Features Rear Panel Features © 2006 Wohler Technologies, Inc. ALL rights reserved... -
Page 8: Front Panel Features
Section 2: Operation Front Panel Features Please refer to Figure-2a on the facing page to familiarize yourself with the front panel features of the VMDA-SUM8 unit. The following sections describe these functions and are referenced, by number, to Figure-2a. Speaker (Left and Right) The VMDA-SUM8 internal speaker system is comprised of two mid-range speakers capable of stereo or mono reproduction. - Page 9 VMDA-SUM8 User Manual P/N 821649 Rev-A Section 2: Operation Figure-2a: Front Panel Features © 2006 Wohler Technologies, Inc. ALL rights reserved...
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Page 10: Rear Panel Features
Section 2: Operation Rear Panel Features Please refer to Figure-2b on the facing page to familiarize yourself with the rear panel features of the VMDA-SUM8 unit. The following sections describe these features and are referenced, by letter, to Figure-2b. Analog Input Connector This DB-25 connector accepts eight channels of standard analog audio signals and is confi... - Page 11 VMDA-SUM8 User Manual P/N 821649 Rev-A Section 2: Operation Figure-2b: Rear Panel Features © 2006 Wohler Technologies, Inc. ALL rights reserved...
- Page 12 VMDA-SUM8 User Manual P/N 821649 Rev-A (This page left intentionally blank) © 2006 Wohler Technologies, Inc. ALL rights reserved...
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Page 13: Section 2: Technical Information
VMDA-SUM8 User Manual P/N 821649 Rev-A Section 3 Technical Information Gain Calibration, Mute on Data, V-Bit Error/Mute, and Mono/Stereo Settings VMDA-SUM8 Inconnect Block Diagram © 2006 Wohler Technologies, Inc. ALL rights reserved... - Page 14 (CH-6, AES Gain Calib.) (CH-5/6, (CH-5/6, Mute on Data) Validity Bit (Stereo Mode Header) Error/Mute) (CH-7, AES Gain Calib.) (Mono Mode Header) (CH-8, AES Gain Calib.) (CH-7/8, Validity Bit (CH-7/8, Mute on Data) Error/Mute) © 2006 Wohler Technologies, Inc. ALL rights reserved...
- Page 15 VMDA-SUM8 User Manual P/N 821649 Rev-A Section 3: Technical Information © 2006 Wohler Technologies, Inc. ALL rights reserved...
- Page 16 31055 Huntwood Avenue Hayward, CA 94544 Hayward, CA 94544 Phone: (510) 589-5676 Fax: (510) 870-0811 Phone: (510) 870-0810 Fax: (510) 870-0811 US Toll-Free: 1-888-596-4537 US Toll-Free: 1-888-596-4537 web: www.wohler.com e-mail: support@wohler.com www.wohler.com support@wohler.com © 2006 Wohler Technologies, Inc. ALL rights reserved...
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