MADI 700 Series Guide
System 5
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Contents
Chapter 1. Introduction to the MADI 700 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
AM713/MA703 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
DM714/MD704 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Power On Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Safety and Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
System Requirements and Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
About This Guide. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
About www.avid.com . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Chapter 2. AM713 and MA703 Converters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
AM713/MA703 Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
AM713 Back Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
MA703 Back Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Synchronization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Chapter 3. DM714 and MD704 Converters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
DM 714/MD704 Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
DM714 Back Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
MD704 Back Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Synchronization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
DM714: Pinout for Female DB25 Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
MD704: Pinout for Female DB25 Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Appendix A. Compliance Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Environmental Compliance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
EMC (Electromagnetic Compliance). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Safety Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Contents iii
iv MADI 700 Series Guide
Chapter 1: Introduction to the MADI 700 Series
This guide describes the following MADI 700-series converters
for System5:
• AM713 Analog to MADI Converter
• MA703 MADI to Analog Converter
• DM714 Digital to MADI Converter
• MD704 MADI to Digital Converter
AM713/MA703
The AM713 and MA703 converters provide MADI conversion
to/from analog equipment such as consoles, tape decks, microphone preamplifiers and other analog devices. Both converters are two rack spaces high and are housed in a stainless
steel chassis with machined, heavy aluminum front panels.
The AM713 converts incoming analog signals to 24-bit MADI
digital signals that capture the input’s complete dynamic
range. In addition to the 24 XLR connectors for the analog inputs, there are two auxiliary analog inputs (XLR) and two auxiliary digital inputs (S/PDIF or AES/EBU); only one digital connector can be used at a time.
The MA703 converts incoming MADI signals to 24 analog
channels. In addition to the 24 analog outputs, there are also
two auxiliary analog outputs (XLR) and two auxiliary digital
outputs (S/PDIF or AES/EBU). Only one digital connector can
be used at a time.
DM714/MD704
The DM714 and MD704 converters provide MADI conversion
to/from digital (AES/EBU) equipment such as digital
multi-track recorders, digital audio workstations, audio routers, and facility patching systems. Both converters are two
rack spaces high and are housed in a stainless steel chassis
with machined, heavy aluminum front panels.
The DM714 converts incoming AES/EBU digital audio to
MADI. In addition to the 24 input channels (12 AES/EBU
pairs), there are two auxiliary analog inputs (XLR) and two
auxiliary digital inputs (S/PDIF or AES/EBU); only one auxiliary digital connector can be used at a time. Each main
AES/EBU input is automatically evaluated for sample-rate conversion. The incoming sample rate is compared with the internal rate. If they are the same, no conversion occurs. If the rates
differ, sample-rate conversion is activated and persists until a
new input is applied or the internal sample rate changes. The
sample-rate conversion range is 32–56 kHz. Sample-rate conversion reduces a 24-bit signal to 20 bits.
The MD704 converts incoming MADI signals to 24 digital output channels (12 AES/EBU pairs). In addition to the 24 analog
outputs, there are also two auxiliary analog outputs (XLR) and
two auxiliary digital outputs (S/PDIF or AES/EBU). The main
24 outputs can be bit-depth converted from 24 to 20 or 16
bits.
Chapter 1: Introduction to the MADI 700 Series 1
Power On Sequence
We recommend powering up the converters only after verifying the presence of a valid sync signal. After powering up the
converters, the meter LEDs flash briefly and the Sample Rate
and Sample Rate Source LEDs blink as the converter senses the
incoming Sample Rate source and Sample Rate. We recommend monitoring the power-up sequence to verify the converters have correctly auto-sensed the desired Sample Rate
Source and Sample Rate.
To access both the active and the spare fuse:
1 Turn the unit’s power off.
2 Remove the IEC power cable from the power entry module.
3 Use a small screwdriver to open the fuse tray below the elec-
trical inlet.
The active fuse is to the rear of the tray. The spare fuse is in the
tray slot closest to the front. Pull the fuses through the plastic
constriction point that holds them from falling out.
Never disconnect the safety ground to the converters.
Safety and Precautions
220, 230, 240 VAC Operation
Before connecting power to the converters,
change the fuse and voltage selector to the
appropriate 220/230/240 VAC settings.
The converters preserve their signal quality using linear power
supplies that must be manually switched between 115 and
230 VAC. The units are shipped set for 115 VAC. Move the red,
two-position switch near the power entry module of the converters to the 230 VAC position (down) for 220/230/240 VAC
operation.
Each unit uses a 0.630 A fuse for 115 VAC operation. To operate at 220, 230, or 240 VAC, install the spare 0.315 A fuse provided in the power entry module fuse-holder.
2 MADI 700 Series Guide
Power Cord Requirements
The converters are supplied with North American IEC power
cords. If this cord is changed to allow a different plug configuration, it is the responsibility of the user to select an approved power cord with proper construction material, current
capacity, flexibility, and strength characteristics.
Cooling
We strongly recommend providing adequate ventilation to
the converters, particularly when installed in a rack. The
AM713 and MA703 converters in particular should have space
left above and below every two units so heat can properly
dissipate.
System Requirements and
Compatibility
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The Avid website (www.avid.com) is your best online source
for information to help you get the most out of your system.
The following are just a few of the services and features
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computers, operating systems, hard drives, and third-party
devices, visit www.avid.com/compatibility.
Product Registration Register your purchase online.
About This Guide
This guide provides a basic overview of the features of the
MADI 700 Series converters.
For complete instructions on connecting and configuring
your system, see the System 5 Installation Guide.
Conventions Used in This Guide
All of our guides use the following conventions to indicate
menu choices and key commands:
:
Convention
Action
File > Save
Choose Save from the File menu
Control+N
Hold down the Control key and press
the N key
Control-click
Hold down the Control key and click the
mouse button
Right-click
Click with the right mouse button
Support and Downloads Contact Avid Customer Success (technical support); download software updates and the latest online manuals; browse the Compatibility documents for system
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Training and Education Study on your own using courses available online or find out how you can learn in a classroom setting at a certified Avid training center.
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The names of Commands, Options, and Settings that appear
on-screen are in a different font.
The following symbols are used to highlight important
information:
User Tips are helpful hints for getting the most from
your system.
Important Notices include information that could affect
your data or the performance of your system.
Shortcuts show you useful keyboard or mouse shortcuts.
Cross References point to related sections in this guide and
other Avid guides.
Chapter 1: Introduction to the MADI 700 Series 3
4 MADI 700 Series Guide
Chapter 2: AM713 and MA703 Converters
Features
Applications
Professional grade audio conversion is accomplished utilizing
128 times over-sampled noise-shaped delta-sigma techniques.
The analog to digital conversion employs a multi-bit modular
architecture while the digital to analog conversion employs a
single-bit modulator architecture. Low-jitter reference clocks
are provided utilizing digital PLL techniques with VCXO and
VCO oscillators.
In addition to their standard use in a Pro Series digital system,
the AM713 and MA703 can be used as stand-alone converters
when 24, 48, or more channels of analog-to-MADI and/or
MADI-to-analog conversion is necessary (i.e., interfacing an
analog tape deck to a digital mixer). When used with the
SH612 Studio Hub, this is a powerful conversion and MADI
routing system that can be used as an interface between an analog console and an otherwise all-digital facility (i.e., TV
broadcast facility).
The analog inputs and outputs can be calibrated from the
front panel of each unit. Four segment LEDs on the front
panel monitor signal level. LED meter segments indicate -42,
-18, -6 (green) and -0.005 dBFS (red).
MADI cables can be extended to 50 m (164 ft),
allowing remote location of the converters.
AES/EBU and Word Clock external sync inputs on both units
provide synchronization to digital systems. Sample Rate
Source and Sample Rate are automatically sensed by both
units. Supported sample rates include 44.1, 48, 88.2, and 96
kHz. In addition, pull-up and pull-down rates for the standard
sample rates, as well as custom sample rates are available.
Chapter 2: AM713 and MA703 Converters 5
AM713/MA703 Front Panel
This section discusses both front panels and notes their few differences.
AM713 Front Panel
Signal Strength LEDs Each of the 28 channels has a four-segment LED that represents the following signal levels: -42 dB,
-18 dB, -6 dB (green), -0.05 dB (red).
Trim Pots Access Three trim pots adjust the maximum analog
input level of channels 1–8, 9–16, and 17–24 in 2-dB steps between +12 and +26 dBu.
SR Conv This indicates sample-rate conversion activity on the
auxiliary digital inputs.
Sample Rate LEDs These LEDs indicate the sample rate to
which the converter is currently locked. Sample rates are
auto-sensed but can be manually selected on the AM713. Supported sample rates are 96 kHz, 88.2 kHz, 48 kHz, 44.1 kHz,
and Custom rates from external sources.
Sample Rate Source LEDs These LEDs indicate the format of
the Sample Rate Source to which the converter is currently
locked. Sample Rate Source can be auto-sensed or manually selected. If an external source is not detected, the AM713 reverts
to Internal sync; the MA703 mutes its outputs. If a manually
selected source is not present, the Sample Rate Source indicator blinks.
• AES: Sample Rate locked to AES Input.
• Word: Sample Rate locked to Word Clock Input.
• Internal (AM713 only): Sample Rate locked to its own internal crystal.
• MADI (MA703 only): Sample Rate locked to MADI.
• Auto: Sample Rate Source has been auto-sensed.
These LEDs appear in the same order in which signals are
tested for their presence. This detection procedure occurs
when the converters are powered on. The Sample Rate
(AM713 only) and Sample Rate Source can also be selected
manually.
Manual Selection Buttons The button below each Sample Rate
LED row manually selects the sample rate. The AM713 also allows manual selection of the Sample Rate Source.
Power Switch On/Off switch.
There are no user-serviceable parts in the
converters.
6 MADI 700 Series Guide
AM713 Back Panel
AM713 Back Panel
Input Voltage Selector This red switch allows the unit to operate in either 110/115 VAC or 220/230/240 VAC environments. A fuse must also be changed for 220/230/240 VAC operation. Units are shipped set and fused for 110/115 VAC.
S/PDIF Digital Input (RCA) Stereo S/PDIF digital input on one
RCA connector. Functions in parallel with the auxiliary
AES/EBU input and the two inputs should not be used simultaneously.
Power Connector (IEC) and Fuse Tray The IEC power connector accepts standard IEC power cords. The fuse tray contains
both the active fuse and a spare fuse for 220/230/240 VAC operation. For information on changing the fuse see “220, 230,
240 VAC Operation” on page 2.
AES Sync In (female XLR) Master clock input for the converter
when using AES as Sample Rate Source.
Analog Inputs (female XLR) 24 balanced, analog inputs on
XLR connectors. Input sensitivity is set from the front panel.
Word In (BNC) Master clock input for the converter when using Word Clock as Sample Rate Source.
Auxiliary Analog Inputs (female XLR) Two balanced analog inputs on XLR connectors. Input sensitivity is set from the front
panel.
Word Out (BNC) Outputs a Word clock signal synchronized to
the Sample Rate Source. In the presence of an external Word
clock input, this connector provides a regenerated version of
that input signal. Without an external sample rate source, this
connector outputs the internally generated clock signal.
AES/EBU Digital Input (female XLR) Stereo AES/EBU digital input on one XLR connector. Functions in parallel with the auxiliary S/PDIF input and the two inputs should not be used simultaneously.
AES Sync Thru (male XLR) Outputs the same signal connected
to AES Sync In.
MADI Out (BNC) Outputs the digital audio signal.
• 1–24: Analog inputs
• 25–26: Aux analog inputs
• 27–28: Aux digital inputs
28 channels are always transmitted; dual channels
are not used.
Chapter 2: AM713 and MA703 Converters 7
MA703 Back Panel
MA703 Back Panel
Input Voltage Selector This red switch sets the unit to either
110/115 VAC or 220/230/240 VAC environments. A fuse must
also be changed for 220/230/240 VAC operation. Units are
shipped set and fused for 110/115 VAC.
S/PDIF Digital Outputs (RCA) Stereo S/PDIF digital output on
one RCA connector. Functions in parallel with the auxiliary
AES/EBU output and the two inputs should not be used simultaneously.
Power Connector (IEC) and Fuse Tray The IEC power connector accepts standard IEC power cords. The fuse tray contains
both the active and spare fuses. For information on changing
the fuse, see “220, 230, 240 VAC Operation” on page 2.
AES Sync In (female XLR) Master clock input for the converter
when using AES as the Sample Rate Source.
Analog Outputs (male XLR) 24 balanced analog outputs on
XLR connectors. Output level is set from the front panel.
Auxiliary Analog Outputs (male XLR) Two balanced analog outputs on XLR connectors. Output level can is set from the front
panel.
AES/EBU Digital Outputs (male XLR) Stereo AES/EBU digital
outputs on one XLR connector. Functions in parallel with the
auxiliary S/PDIF output and the two inputs should not be used
simultaneously.
AES Sync Thru (male XLR) Outputs the same signal connected
to AES Sync In.
Word In (BNC) Master clock input for the converter when using Word Clock as Sample Rate Source.
Word Out (BNC) Outputs a Word Clock signal synchronized to
the Sample Rate Source. In the presence of an external Word
clock input, this connector provides a regenerated version of
the input signal. Without an external sample rate source, this
connector outputs an internally generated clock signal.
MADI In (BNC) Digital audio signal input.
• 1–24:analog outputs
• 25–26:aux analog outputs
• 27–28:aux digital outputs
8 MADI 700 Series Guide
Synchronization
AM713
MA703
The AM713 Sample Rate is set externally by one of two source
signals or internally by crystals and associated circuitry. The
Sample Rate Source is determined automatically by the presence of signals when the AM713 is powered on. The order in
which external signals are tested for presence is: AES, Word,
Internal.
The MA703 detects Sample Rate and Sample Rate Source like
the AM713 with the following differences:
The detected signal immediately becomes the source for the
AM713 sample rate clock. The auto-sensed Sample Rate Source
can be overridden using the button on the front panel of the
AM713, below the Sample Rate Source LEDs. If neither AES
nor Word Clock signals are present, the AM713 uses its internal clock driven by crystals.
 Since the MA703 is always a slave to an external Sample
Rate Source, there is no internal Sample Rate Source setting.
 The MA703 can use MADI in addition to AES or Word Clock
as a Sample Rate Source, and detects the presence of these signals in the following order: AES, Word, MADI.
When a signal is detected, it immediately becomes the sample
rate clock of the MA703. The auto-sensed Sample Rate Source
can be overridden with the Sample Rate Source button on the
front panel of the MA703, below the Sample Rate Source LEDs.
The default internal Sample Rate of the AM713 is 48 kHz. This
default internal rate can be overridden with the Sample Rate
button on the front panel of the AM713 (directly below the
Sample Rate LEDs) to 44.1, 48 or 96 kHz.
Chapter 2: AM713 and MA703 Converters 9
Specifications
AM713 Performance Specifications
Sync Sources
AES, word clock, internal
Sync Outputs
AES thru and word clock out
Sync Detection
Auto or switched
Internal Sample Rate
44.1, 48, 88.2, 96 kHz ±50 ppm
Lock range
fine mode
custom mode
Audio Inputs
300 ppm
12% varispeed of 44.1 and 48 kHz
Above 50 kHz, varispeed can adjust the nominal sample rate by -12 to +5%
24 analog, 4 aux channels (2 analog, 2 digital)
Main Inputs (1–24)
Electronically balanced XLR; 20 k input impedance
Level for 0 dBFS
Signal-to-Noise Ratio
THD
Frequency Response
(1 kHz @ +4 dBu)
CMRR
Crosstalk
Group Delay
Adjustable between +12 and +26 dBu in 2-dB steps
105 dB (unweighted)
0.0005%
0.25 dB 20 Hz – 20 kHz @ 48 kHz
-2.5 dB 20 Hz – 40 kHz @ 96 kHz
>50 dB 20 Hz – 20 kHz
 -110 dB @ 1 kHz
 -100dB 20 Hz – 20 kHz
41.7/Fs (869 s @ 48 kHz)
Aux Digital Inputs (D1/2)
AES (XLR), transformer isolated, 110 
S/PDIF (RCA), 75 
Aux Analog Inputs (A1/2)
same as main inputs
MADI Output
BNC 75 
28 channels at all sample rates
Inputs mapped to channels 1–24, A1/2 to 25/26, D1/2 to 27/28
24-bit signal path
10 MADI 700 Series Guide
MA703 Performance Specifications
Sync Sources
AES, word clock, MADI
Sync Outputs
AES thru and word clock out
Sync Detection
Auto or switched
Internal Sample Rate
44.1, 48, 88.2, 96 kHz ±50 ppm
Lock range
fine mode
custom mode
300 ppm
12% varispeed of 44.1 and 48 kHz
Above 50 kHz, varispeed can adjust the nominal sample rate by -12 to +5%
MADI Input
BNC 75 
44.1/48 kHz: 56 channels
88.2/96 kHz: 28 channels. Outputs mapped to channels 1–24, A1/2 to 25/26,
D1/2 to 27/28. 24-bit signal path
Audio Outputs
24 analog, 4 aux channels (2 analog, 2 digital)
Main Outputs (1–24)
Electronically balanced XLR; 200  output impedance
Level for 0 dBFS
Signal-to-Noise Ratio
THD
Frequency Response
(1 kHz @ +4 dBu)
CMRR
Crosstalk
Group Delay
Adjustable between +12 and +26 dBu in 2-dB steps
101 dB (unweighted)
0.0003%
0.25 dB 20 Hz – 20 kHz @ 48 kHz
-2.5 dB 20 Hz – 40 kHz @ 96 kHz
>50 dB 20 Hz – 20 kHz
 -110 dB @ 1 kHz
 -100 dB 20 Hz – 20 kHz
28.2/Fs (588 s @ 48 kHz)
AES (XLR), transformer isolated, 110 
S/PDIF (RCA), 75 
Aux Digital Outputs (D1/2)
Digital Format
Aux Analog Outputs (A1/2)
professional or consumer (internally switched)
same as main outputs
AM713/MA703 Technical Specifications
Power Requirements
110/115 VAC or 220/230/240 VAC; 50 or 60 Hz
Power Consumption
50 W
Temperature of Operation
5–35C
Dimensions
Height: 3.5 in; Width: 19 in; Depth: 18.25 in; Weight: 17 lb
Chapter 2: AM713 and MA703 Converters 11
12 MADI 700 Series Guide
Chapter 3: DM714 and MD704 Converters
Features
Applications
AES/EBU and Word Clock external sync inputs on both units
provide synchronization to digital systems. Sample Rate
Source and Sample Rate are automatically sensed by both
units. Supported sample rates include 44.1, 48, 88.2, and 96
kHz. In addition, pull-up and pull-down rates for the standard
sample rates, as well as custom sample rates are available.
The DM714 and MD704 can be used as 24-channel digital interfaces in a Pro Series digital system or other situations requiring digital to MADI conversion. These devices allow recording
or transferring to/from digital devices that are not compatible
with MADI but have an AES/EBU interface.
Four-segment front panel LEDs monitor the input/output signal strength. LED meter segments indicate -42, -18, -6 (green)
and -0.005 dBFS (red).
MADI cables can be extended to 50 m (164 ft),
allowing remote location of the converters.
The analog inputs and outputs can be calibrated from the
front panel of each unit.
Chapter 3: DM714 and MD704 Converters 13
DM 714/MD704 Front Panel
This section discusses both front panels and notes their few differences.
DM714 Front Panel
Signal Strength LEDs Each of the 28 channels has a four-segment LED that represents the following signal levels: -42 dB,
-18 dB, -6 dB (green), -.05 dB (red).
Trim Pot A trim pot adjusts the analog output level of channels
A1 and A2 between +12 and +26 dBu in 2-dB steps.
SR Conv The sample rate of all digital inputs is automatically
detected and, if asynchronous, converted to the system Sample Rate. This process is independently applied to each stereo
pair such that a combination of synchronous and asynchronous signals can be connected to the DM714. Sample-rate
conversion is switched off when synchronous signals are detected. The range of sample-rate conversion is 32–56 kHz. 88.2
or 96 kHz signals cannot be sample-rate converted and are
passed through if synchronous. If non-synchronous 88.2 or
96 kHz signals are detected, the upper signal strength LED
flashes red to warn the user that the sample rate for those
channels is not in sync with the system settings. Sample-rate
conversion reduces the bit depth in a 24-bit signal to 20 bits.
Sample Rate LEDs These LEDs indicate the Sample Rate to
which the converter is currently locked. Sample Rates are
auto-sensed but can be manually selected on the DM714. Supported Sample Rates are 96 kHz, 88.2 kHz, 48 kHz, 44.1 kHz
and Custom Rates from external sources.
14 MADI 700 Series Guide
Sample Rate Source LEDs These LEDs indicate the format of
the Sample Rate Source to which the converter is currently
locked. Sample Rate Source can be auto-sensed or manually selected. If an external source is not detected, the DM714 reverts
to Internal sync; the MD704 mutes its outputs. If a manually
selected source is not present, the Sample Rate Source indicator blinks.
• AES: Sample Rate locked to AES Input.
• Word: Sample Rate locked to Word Clock Input.
• Internal (DM714 only): Sample Rate locked to its own internal crystal.
• MADI (MD704 only): Sample Rate locked to MADI.
• Auto: Sample Rate Source has been auto-sensed.
These LEDs appear in the same order in which signals are
tested for presence. This detection procedure occurs when the
converters are powered on. The Sample Rate (DM714 only)
and Sample Rate Source can also be selected manually.
Manual Selection Buttons The button below each Sample Rate
LED row manually selects the Sample Rate Source. The DM714
also allows manual selection of the Sample Rate.
Power Switch On/Off switch.
There are no user-serviceable parts in the
converters.
DM714 Back Panel
DM714 Back Panel
Input Voltage Selector This red switch allows the unit to operate in either 110/115 VAC or 220/230/240 VAC environments. A fuse must also be changed for 220/230/240 VAC operation. Units are shipped set and fused for 110/115 VAC.
Power Connector (IEC) and Fuse Tray The IEC power connector accepts standard IEC power cords. The fuse tray contains
both the active fuse and a spare fuse for 220/230/240 VAC operation. For information on changing the fuse, see “220, 230,
240 VAC Operation” on page 2.
AES/EBU Digital Inputs (female XLR) 12 AES/EBU stereo inputs.
Parallel AES/EBU Digital Inputs (female DB25) Three 8-channel digital connectors function in parallel with XLR digital inputs, and should not be used simultaneously with the XLR inputs. See “DM714: Pinout for Female DB25 Connector” on
page 21 for pinout diagram.
Auxiliary Analog Inputs (female XLR) Two balanced analog inputs on XLR connectors. Input sensitivity is set from the front
panel.
AES Sync In (female XLR) Master clock input for the converter
when using AES as Sample Rate Source.
AES Sync Thru (male XLR) Outputs the same signal connected
to AES Sync In.
Word In (BNC) Master clock input for the converter when using Word Clock as Sample Rate Source.
Word Out (BNC) Outputs a Word clock signal synchronized to
the Sample Rate Source. In the presence of an external Word
clock input, this connector provides a regenerated version of
that input signal. Without an external sample rate source, this
connector outputs the internally generated clock signal.
MADI Out (BNC) Outputs the digital audio signal.
• 1–24: Main digital inputs
• 25–26: Aux analog inputs
• 27–28: Aux digital inputs
28 channels are always transmitted; dual channels
are not used.
Auxiliary AES/EBU Digital Input (female XLR) Stereo AES/EBU
digital input on one XLR connector. Functions in parallel with
the auxiliary S/PDIF input and the two inputs should not be
used simultaneously.
Auxiliary S/PDIF Digital Input (RCA) Stereo S/PDIF digital input on one RCA connector. Functions in parallel with the auxiliary AES/EBU input and the two inputs should not be used simultaneously.
Chapter 3: DM714 and MD704 Converters 15
MD704 Back Panel
MD704 Back Panel
Input Voltage Selector This red switch sets the unit to either
110/115 VAC or 220/230/240 VAC environments. A fuse must
also be changed for 220/230/240 VAC operation. Units are
shipped set and fused for 110/115 VAC.
Power Connector (IEC) and Fuse Tray The IEC power connector accepts standard IEC power cords. The fuse tray contains
both the active and spare fuses. For information on changing
the fuse, see “220, 230, 240 VAC Operation” on page 2.
AES/EBU Digital Outputs (female XLR) 12 AES/EBU stereo outputs.
Parallel AES/EBU Digital Outputs (female DB25) Three
8-channel digital connectors function in parallel with XLR
digital outputs and the two outputs should not be used simultaneously. See “MD704: Pinout for Female DB25 Connector”
on page 22 for pinout diagram.
Auxiliary Analog Outputs (male XLR) Two balanced analog outputs on XLR connectors. Output level can is set from the front
panel.
AES/EBU Digital Outputs (male XLR) Stereo AES/EBU digital
outputs on one XLR connector. Functions in parallel with the
auxiliary S/PDIF output and the two outputs should not be
used simultaneously.
S/PDIF Digital Outputs (RCA) Stereo S/PDIF digital output on
one RCA connector. Functions in parallel with the auxiliary
AES/EBU output and the two outputs should not be used simultaneously.
16 MADI 700 Series Guide
AES Sync In (female XLR) Master clock input for the converter
when using AES as the Sample Rate Source.
AES Sync Thru (male XLR) Outputs the same signal connected
to AES Sync In.
Word In (BNC) Master clock input for the converter when using Word Clock as Sample Rate Source.
Word Out (BNC) Outputs a Word Clock signal synchronized to
the Sample Rate Source. In the presence of an external Word
clock input, this connector provides a regenerated version of
the input signal. Without an external sample rate source, this
connector outputs an internally generated clock signal.
MADI In (BNC) Digital audio signal input.
• 1–24: Main digital outputs
• 25–26: Aux analog outputs
• 27–28: Aux digital outputs
Bit-Depth Reduction Sets the resolution to 16, 20, or 24 bits for
the main AES/EBU channels.
Synchronization
DM714
MD704
The DM714 Sample Rate is set externally by one of two source
signals or internally by crystals and associated circuitry. The
Sample Rate Source is determined automatically by the presence of signals when the DM714 is powered on. The order in
which external signals are tested for presence is: AES, Word,
Internal.
The MD704 detects Sample Rate and Sample Rate Source like
the DM714 with the following two differences:
The detected signal immediately becomes the source for the
DM714 sample rate clock. The auto-sensed Sample Rate
Source can be overridden using the button on the front panel
of the DM714, below the Sample Rate Source LEDs. If neither
AES nor Word Clock signals are present, the DM714 uses its
internal clock derived from on-board voltage-controlled crystal.
The default internal Sample Rate of the DM714 is 48 kHz. This
default internal rate can be overridden with the Sample Rate
button on the front panel of the DM714 (directly below the
Sample Rate LEDs) to 44.1, 48 or 96 kHz.
Since the MD704 is always a slave to an external Sample Rate
Source, there is no internal Sample Rate setting.
The MD704 can use MADI in addition to AES or Word Clock
as a Sample Rate Source, and detects the presence of these signals in the following order: AES, Word, MADI.
When a signal is detected, it immediately becomes the sample
rate clock of the MD704. The auto-sensed Sample Rate Source
can be overridden with the Sample Rate Source button on the
front panel of the MD704, below the Sample Rate Source
LEDs.
The converters occasionally do not lock to a 96 kHz AES Sync
signal. This condition can normally be remedied by cycling
the converter’s power, disconnecting and reconnecting the
AES Sync signal, or using Word Clock.
Chapter 3: DM714 and MD704 Converters 17
Specifications
DM714 Performance Specifications
Sync Sources
AES, word clock, internal
Sync Outputs
AES thru and word clock out
Sync Detection
Auto or switched
Internal Sample Rate
44.1, 48, 88.2, 96 kHz ±50 ppm
Lock range
fine mode
custom mode
Audio Inputs
300 ppm
12% varispeed of 44.1 and 48 kHz
24 analog, 4 aux channels (2 analog, 2 digital)
Main Inputs (1–24)
XLR, transformer isolated, 110 , 24-bit
Sample-rate conversion automatically applied to non-synchronous 44.1 or 48 kHz
inputs with reduction to 20 bits (88.2 or 96 kHz not yet supported).
Group delay varies with sync frequency and inputs
Aux Digital Inputs (D1/2)
AES (XLR), transformer isolated, 110 
S/PDIF (RCA), 75 
Aux Analog Inputs (A1/2)
Electronically balanced XLR; 20 k input impedance
Level for 0 dBFS
Signal-to-Noise Ratio
THD
Frequency Response
(1 kHz @ +4 dBu)
CMRR
Crosstalk
Group Delay
Adjustable between +12 and +26 dBu, in 2-dB steps
105 dB (unweighted)
0.0005%
0.5 dB 20 Hz – 20 kHz @ 48 kHz
-2.5 dB 20 Hz – 40 kHz @ 96 kHz
>50 dB 20 Hz – 20 kHz
> -110 dB @ 1 kHz; > -100 dB 20 Hz – 20 kHz
41.7/Fs (869 μs @ 48 kHz)
MADI Output
BNC 75 
28 channels at all sample rates
Inputs mapped to channels 1–24, A1/2 to 25/26, D1/2 to 27/28
24-bit signal path
Sample-Rate Conversion
Automatic detection and conversion of asynchronous sample rates on digital
inputs. SRC automatically switched off for synchronous channels.
SRC Range
18 MADI 700 Series Guide
32–56 kHz
MD704 Performance Specifications
Sync Sources
AES, word clock, internal
Sync Outputs
AES thru and word clock out
Sync Detection
Auto or switched
Internal Sample Rate
44.1, 48, 88.2, 96 kHz ±50 ppm
Lock range
fine mode
custom mode
300 ppm
12% varispeed of 44.1 and 48 kHz
MADI Input
BNC 75 
28 channels at all sample rates
Outputs mapped to channels 1–24, A1/2 to 25/26, D1/2 to 27/28
24-bit signal path
Audio Outputs
24 analog, 4 aux channels (2 analog, 2 digital)
Main Outputs (1–24)
AES on XLR, transformer isolated, 110 , 24 bit
User can truncate to 16- or 20-bit per stereo pair
Truncation Type
Dither Type
Digital Format
Group Delay
Aux Digital Outputs (D1/2)
Digital Format
Aux Analog Outputs (A1/2)
Level for 0 dBFS
Signal-to-Noise Ratio
THD
Frequency Response
(1 kHz @ +4 dBu)
Crosstalk
Group Delay
Dithered or 1st order noise-shaped, internally switched
TPDF (active only for 16- or 20-bit word length)
Pro or Consumer, internally switched
3/Fs (63 μs @ 48 kHz)
AES (XLR), transformer isolated, 110 
S/PDIF (RCA), 75 
professional or consumer (internally switched)
Electronically balanced XLR; 20 k input impedance
Adjustable between +12 and +26 dBu in 2-dB steps
101 dB (unweighted)
0.0003%
0.5 dB 20 Hz – 20 kHz @ 48 kHz
-2.5 dB 20 Hz – 40 kHz @ 96 kHz
> -110 dB @ 1 kHz; > -100dB 20 Hz – 20 kHz
28.2/Fs (588 s@ 48 kHz)
Chapter 3: DM714 and MD704 Converters 19
AM713/MA703 Technical Specifications
Power Requirements
110/115 VAC or 220/230/240 VAC; 50 or 60 Hz
Power Consumption
25 W
Temperature of Operation
5–35C
Dimensions
Height: 3.5 in; Width: 19 in; Depth: 18.25 in; Weight: 17 lb
20 MADI 700 Series Guide
DM714: Pinout for Female DB25 Connector
13
1
25
14
DM714 Female DB25 Connector
Pin Number
Signal
1–6
no connect
7
Digital in 7/8 + (or 15/16, 23/24 +)
8
GND
9
Digital in 5/6 - (or 13/14, 21/22 -)
10
Digital in 3/4 + (or 11/12, 19/20 +)
11
GND
12
Digital in 1/2 - (or 9/10, 17/18 -)
13–19
no connect
20
Digital in 7/8 - (or 15/16, 23/24 +)
21
Digital in 5/6 + (or 13/14, 21/22 +)
22
GND
23
Digital in 3/4 - (or 11/12, 19/20 -)
24
Digital in 1/2 + (or 9/10, 17/18 +)
25
GND
The same pinout applies to the female DB25 connectors for channels 9–16 and 17–24.
Chapter 3: DM714 and MD704 Converters 21
MD704: Pinout for Female DB25 Connector
13
1
25
14
MD704 Female DB25 Connector
Pin Number
Signal
1
Digital out 7/8 + (or 15/16, 23/24 +)
2
GND
3
Digital out 5/6 - (or 13/14, 21/22 -)
4
Digital out 3/4 + (or 11/12, 19/20 +)
5
GND
6
Digital out 1/2 - (or 9/10, 17/18 -)
7–13
no connect
14
Digital out 7/8 - (or 15/16, 23/24 -)
15
Digital out 5/6 + (or 13/14, 21/22 +)
16
GND
17
Digital out 3/4 - (or 11/12, 19/20 -)
18
Digital out 1/2 + (or 9/10, 17/18 +)
19
GND
20–25
no connect
The same pinout applies to the female DB25 connectors for channels 9–16 and 17–24.
22 MADI 700 Series Guide
Appendix A: Compliance Information
Environmental Compliance
Disposal of Waste Equipment by Users in the
European Union
Proposition 65 Warning
This product contains chemicals, including lead,
known to the State of California to cause cancer
and birth defects or other reproductive harm.
Wash hands after handling.
Perchlorate Notice
This product may contain a lithium coin battery. The State of California requires
the following disclosure statement: “Perchlorate Material – special handling may
apply, See www.dtsc.ca.gov/hazardouswaste/perchlorate.”
This symbol on the product or its packaging indicates that this product must not
be disposed of with other waste. Instead, it is your responsibility to dispose of
your waste equipment by handing it over to a designated collection point for the
recycling of waste electrical and electronic equipment. The separate collection
and recycling of your waste equipment at the time of disposal will help conserve
natural resources and ensure that it is recycled in a manner that protects human
health and the environment. For more information about where you can drop off
your waste equipment for recycling, please contact your local city recycling office
or the dealer from whom you purchased the product.
Recycling Notice
Appendix A: Compliance Information 23
EMC (Electromagnetic Compliance)
Avid declares that this product complies with the following standards regulating
emissions and immunity:
• FCC Part 15 Class A
• EN55103-1 E4
• EN55103-2 E4
• AS/NZS CISPR 22 Class A
• CISPR 22 Class A
FCC Compliance for United States
Communication Statement
Note: 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.
Any modifications to the unit, unless expressly approved by
Avid, could void the user's authority to operate the
equipment.
24 MADI 700 Series Guide
Australian Compliance
N1709
Canadian Compliance
This Class A digital apparatus meets all requirements of the Canadian
Interference-Causing Equipment Regulations.
Cet appareil numérique de la classe A respecte toutes les exigences du
Règlement sur le material brouilleur du Canada.
CE Compliance
(EMC and Safety)
Avid is authorized to apply the CE (Conformité Europénne) mark on this compliant
equipment thereby declaring conformity to EMC Directive 2004/108/EC and Low
Voltage Directive 2006/95/EC.
Safety Compliance
Safety Statement
This equipment has been tested to comply with USA and Canadian safety
certification in accordance with the specifications of UL Standards:
UL 60950-1:2007, 2nd Ed and CAN/CSA-22.2 No. 60950-1-07, 2nd Ed.
Avid Inc., has been authorized to apply the appropriate NRTL mark on its
compliant equipment.
Warning
13) Unplug this equipment during lightning storms or when unused for long
periods of time.
14) Refer all servicing to qualified service personnel. Servicing is required when
the equipment 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 equipment,
the equipment has been exposed to rain or moisture, does not operate normally,
or has been dropped.
15) For products that are a Mains powered device:
The equipment shall not be exposed to dripping or splashing and no objects filled
with liquids (such as vases) shall be placed on the equipment.
Warning! To reduce the risk of fire or electric shock, do not expose this
equipment to rain or moisture.
16) For products containing a lithium battery:
CAUTION! Danger of explosion if battery is incorrectly replaced. Replace only
with the same or equivalent type.
17) For products with a power switch:
It should remain accessible after installation.
18) The equipment shall be used at a maximum ambient temperature of 40° C.
Important Safety Instructions
1) Read these instructions.
19) This unit is provided with a power supply cord set suitable for 120V AC input
only (for U.S.A.and Canada). For other than U.S.A. and Canada, a qualified
person must provide for use with this unit, an appropriate, approved power
supply cord set which is in compliance with the end use country requirements
and has a minimum cross-sectional area of 1.0mm2.
2) Keep these instructions.
20) For units with more than one power cord:
3) Heed all warnings.
CAUTION: This unit has more than one power supply cord. Disconnect two power
supply cords before servicing to avoid electrical shock.
4) Follow all instructions.
5) Do not use this equipment near water.
6) Clean only with 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 equipment (including amplifiers) that produce heat.
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.
ATTENTION: Cet appareil comporte plus d’un cordon d’alimentation. Afin de
prévenir les chocs électriques, débrancher les deux cordons d’alimentation
avant de faire le dépannage.
21) For products with an operator-accessible fuse:
CAUTION: For continued protection against risk of fire, replace only with same
type and rating of fuse.
ATTENTION: Pour ne pas compromettre la protection contre les risques
d’incendie, remplacer par un fusible de même type et de même caractéristiques
nominales.
10) Protect power cords from being walked on or pinched particularly at plugs,
convenience receptacles, and the point where they exit from the equipment.
11) Only use attachments/accessories specified by the manufacturer.
12) For products that are not rack-mountable: Use only with a cart, stand, tripod,
bracket, or table specified by the manufacturer, or sold with the equipment.
When a cart is used, use caution when moving the cart/equipment combination
to avoid injury from tip-over.
Appendix A: Compliance Information 25
26 MADI 700 Series Guide
Avid
Technical Support (USA)
Product Information
2001 Junipero Serra Boulevard
Daly City, CA 94014-3886 USA
Visit the Online Support Center at
www.avid.com/support
For company and product information,
visit us on the web at www.avid.com