ATI DMM104 User Manual

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DMM100 & DMM100-BAT

Digital Audio MatchMaker®

DMM104 & DMM104-BAT

1X5 Digital Audio Distribution Amplifier

OPERATING AND MAINTENANCE MANUAL

© Copyright 2011, ATI Audio Inc.

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DESCRIPTION

The DMM100 is a level, impedance and connector matcher for AES/EBU digital
audio signals. AES/EBU digital signals share the same general data format
regardless of the mode of transmission. A consumer device is most likely to
output an S/PDIF signal in which a few bits of the data stream indicate whether
the signal source is an original or a first generation copy in order to control
unauthorized large scale duplication. A professional device may indicate whether
the encoded audio is a stereo signal or two monaural channels. The DMM100
doesn’t care about any of these details and just outputs a clean copy of the
original data stream to the smart boxes that do.

You may find it necessary to run a low level RCA type (S/PDIF) digital output
over a long distance in a high noise environment where a balanced XLR high­level connection would be a better choice. Or you may run that high level XLR
balanced 110-ohm line smack dab against a 75 ohm BNC socket. Or that nice
piece of pro-sumer gear only comes with a strange digital spigot that blinks at
you (otherwise known as TOSLINK optical). For all these minor tears in the fabric
of creation we offer you the DMM100 Digital Matchmaker and we send personal
thanks to all those designers who managed to create four incompatible ways to
do the same job.

The DMM104 is a 1X5 Digital Audio Distribution Amplifier. It accepts one
AES/EBU digital audio signal on any of the following four inputs:

1. 110 ohm balanced XLR

2. 75 ohm BNC

3. 75 ohm RCA (S/PDIF)

4. TOSLINK™ optical fiber

The DMM104 duplicates the input signal and provides 4 S/PDIF digital audio
outputs on RCA connectors, plus a TOSLINK™ optical fiber output.

PERFORMANCE

Both the DMM100 and the DMM104 accept AES/EBU digital audio signals from
an XLR female 110 ohm line, a BNC or RCA 75 ohm line or a TOSLINK™ optical
fiber. Electrical inputs as low as .10Vp-p and optical inputs corresponding to a
maximum plastic fiber cable length of 10 meters are properly detected and
reshaped.

The DMM100 and DMM104 provide a signal bandwidth of 12MHz to handle
digital audio sampling rates of 27 to 96kHz.

The DMM100 simultaneously drives an XLR male 110-ohm output at 3.5Vp-p
and a BNC or RCA 75ohm output at 1.0Vp-p and a Toslink optical transmitter.

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The DMM104 simultaneously drives four RCA S/PDIF outputs and one
TOSLINK™ output.

Propagation delay through either the DMM100 or the DMM104 is less than
100nS and jitter is under 5nSp-p.

All electrical inputs and outputs are transformer isolated, floating and DC blocked
to eliminate ground loop hum and jitter and to prevent transformer saturation due
to accidental superimposed DC line voltages. All inputs and outputs are properly
terminated for minimum signal reflection.

A green Signal Present indicator on the DMM100 and DMM104 illuminates when
a data carrier is output.

POWER

Both the DMM100 and the DMM104 operate from an external 24VDC power
module and each draws up to .1A. Loop-thru DC connectors allow multiple units
to operate from a single power module. Allow one power module for every three
one-rack spaces. Use power modules WA100-1, WA100-2 and loop-thru cables
20602-1. One WA100-1 115VAC Power Supply is included with each DMM100
or DMM104 ordered. For world-wide applications, specify WA100-2.

The DMM100-BAT and DMM104-BAT can operate from either four AA batteries
in cover-mounted holders, or an external 24VDC power module. Fresh alkaline
batteries will provide a minimum of 40 hours operation. TOSLINK™ optical
drivers can be disabled with an internal jumper plug (JP1) to increase battery life
by 50%. Batteries are cut off by external power and can be used as an
automatically switched backup power source.

A front panel POWER switch and indicator are provided.

PHYSICAL SPECIFICATIONS, ACCESSORIES AND MOUNTING

SIZE 1.72” (4.45cm) H x 5.75” (14.6cm) W x 6.0” (15.2cm) D
WEIGHT 3 lbs, 1.4 kg Shipping Weight
POWER SUPPLIES

WA100-1 Wall mount power supply (UL, CSA), 24VDC at .4A output,

115VAC/60Hz, and 16VA input; included

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WA100-2 Universal wall mount power supply with interchangeable AC

mains connectors, 24VDC at .4A output, 90-264VAC, 47-63Hz

16VA input; optional at extra cost
20602-1 Loop-thru DC interconnect cable, 13” long.
BBU100-1 Battery Pack, holds four 9V batteries (not inclided)
PPA-1 Remote Power Pack, 115VAC /60Hz
PPA-2 Remote Power Pack, 230VAC /50Hz
PPA-B Extra rechargeable gel-cell battery pack

Units can be mounted up to three across in one vertical 1-3/4” rack space using
accessory rack mount kits. Stacking and angled desk mount kits and field carry
bags are also available.

RACK MOUNT KITS

21075-501 19” 1RU Rack shelf; holds up to 3 units
21097-501 1/3 RU Filler Panel for 21075-501

DESK MOUNT KITS

20617-501 Angled desk mount base.
20617-502 Angled desk mount base and one stacker
20617-503 Angled desk mount base and two stackers

FIELD ACCESSORIES

PROK-1 Protection kit consists of a set of rugged side plates, which protect

front panel controls and rear connectors from impact damage. Side
plates also allow attachment of a carry strap (not included).

ABAG-1 Slide brackets mount PPA, DCA or BBU power modules and allow

quick interchange. Carry case with shoulder strap houses DMM
products with power modules, attaches to PROK-1 (included).
Allows easy access to battery holders.

NOTES: TOSLINK Interconnect cables up to several feet long are available

separately.

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One Year Limited Warranty

ATI warrants this product to be free from defects in materials and workmanship to its original
owner for a period of one year from date of purchase. ATI will repair or replace such product or
part thereof, which upon inspection by ATI, is found to be defective in materials or workmanship.

The Proper Return Authorization Number must be obtained from ATI in advance of return.
Contact ATI at 856-626-3480 or email [e-mail] to receive the number and
instructions for return of your unit.

A written statement providing the name, address, daytime telephone number and email address
of the original owner, together with receipt from the original purchase, and a brief description of
any claimed defects, must accompany all returns. Parts or product for which replacement is made
shall become the property of ATI.

The customer shall be responsible for costs of transportation and insurance to the factory of ATI,
and shall be required to prepay such costs.

ATI shall use reasonable efforts to repair or replace any product covered by this limited warranty
within thirty days of receipt. In the event repair or replacement shall require more than thirty days,
ATI shall notify the customer accordingly. ATI reserves the right to replace any product that has
been discontinued from its product line with a new product of comparable value and function.

This warranty shall be void in the event a covered product has been damaged, or failure is
caused by or attributable to acts of God, abuse, accident, misuse, improper or abnormal usage,
failure to follow instructions, improper installation or maintenance, alteration, or lightning, power
fluctuations and other incidental or environmental conditions. Further, product malfunction or
deterioration due to normal wear is not covered by this warranty.

ATI DISCLAIMS ANY WARRANTIES, EXPRESS OR IMPLIED, WHETHER OF
MERCHANTABILITY OF FITNESS FOR A PARTICULAR USE, EXCEPT AS EXPRESSLY SET
FORTH HEREIN. THE SOLE OBLIGATION OF ATI UNDER THIS LIMITED WARRANTY SHALL
BE TO REPAIR OR REPLACE THE COVERED PRODUCT, IN ACCORDANCE WITH THE
TERMS SET FORTH HEREIN. ATI EXPRESSLY DISCLAIMS ANY LOST PROFITS, GENERAL,
SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES WHICH MAY RESULT FROM
BREACH OF ANY WARRANTY, OR ARISING OUT OF THE USE OR INABILITY TO USE ANY
ATI PRODUCT.

Some states do not allow the exclusion or limitation of incidental or consequential damages or
limitation on how long an implied warranty lasts, so the above limitations and exclusions may not
apply to you.

This warranty gives you specific legal rights, and you may also have other rights that vary from
state to state.

ATI reserves the right to modify or discontinue, without prior notice to you, any model or style
product.

If warranty problems arise, or if you need assistance in using your product contact us.