FC726
Digital Audio Format Converter
Installation Manual
Document Revision: A
Part Number: 840-11321-01
Release Date: August 2010
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Regulatory and Safety Notices
FCC Notice
Part 15 of the Federal Communication Commission Rules and Regulations has established Radio
Frequency (RF) emission limits to provide an interference free radio frequency spectrum. Many
electronic devices produce RF energy incidental to their intended purpose.
These rules place electronic equipment into two classes, A and B, depending on the intended use.
Class A devices are those that may be expected to be installed in a business or commercial environment.
Class B devices are those that may be expected to be installed in a home or residential environment. The
FCC requires devices in both classes to be labeled with the interference likelihood and additional
operating instructions. The rating label on the equipment will show which class the product is (A or B).
Class A product will not have an FCC logo. Class B equipment will have an FCC logo. The information
statements differ on the two classes.
Class A Equipment
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 instructions, 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 personal expense.
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Modifications
The FCC requires the user to be notified that any changes or modifications made to Avid hardware that
are not expressly approved by Avid Technology may void the user’s authority to operate the equipment.
Cables
Connections to Avid hardware must be made with shielded cables with metallic RFI/EMI connector
hoods in order to maintain compliance with FCC Rules and Regulations.
PRODUCTS WITH MULTIPLE POWER INPUTS:
WARNING: Each power input is intended to be connected to a separate branch circuit. Risk of high
leakage exists if multiple inputs are connected to a single source and protective earth is not present. A
QUALIFIED SERVICE PERSON shall verify that each socket-outlet from which the equipment is to be
powered provides a connection to the building protective earth. If any do not provide this connection,
the QUALIFIED SERVICE PERSON shall arrange for the installation of a PROTECTIVE EARTHING
CONDUCTOR from the separate protective earthing terminal to the protective earth wire in the building.
Canadian ICES-003
Class A Equipment
This Class A digital apparatus meets all requirements of the Canadian Interference-Causing Equipment
Regulations.
Cet appareil numérique de la classe A respecté toutes les exigences du Règlement sur le matériel
brouilleur du Canada.
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European Union Declaration of Conformity
Declaration of conformity
Konformitätserklärung
Déclaration de conformité
Declaración de Confomidad
Verklaring de overeenstemming
Dichiarazione di conformità
We/Wir/ Nous/WIJ/Noi:
Avid Technology
1925 Andover Street
Tewksbury, MA, 01876 USA
European Contact: Nearest Avid Sales and Service Office or
Avid Technology International B.V.
Sandyford Industrial Estate
Unit 38, Carmanhall Road
Dublin 18, Ireland
declare under our sole responsibility that the product,
erklären, in alleniniger Verantwortung,daß dieses Produkt,
déclarons sous notre seule responsabilité que le produit,
Euphonix is Avid. Learn more at www.avid.com
declaramos, bajo nuestra sola responsabilidad, que el producto,
verklaren onder onze verantwoordelijkheid, dat het product,
dichiariamo sotto nostra unica responsabilità, che il prodotto,
Product Name(s) : Digital Audio Format Converter
Model Number(s): FC726
Product Options: This declaration covers all options for the above product(s).
to which this declaration relates is in conformity with the following standard(s) or other normative
documents.
auf das sich diese Erklärung bezieht, mit der/den folgenden Norm(en) oder Richtlinie(n)
übereinstimmt.
auquel se réfère cette déclaration est conforme à la (aux) norme(s) ou au(x) document(s)
normatif(s).
al que se refiere esta declaración es conforme a la(s) norma(s) u otro(s) documento(s)
normativo(s).
waarnaar deze verklaring verwijst, aan de volende norm(en) of richtlijn(en) beantwoordt.
a cui si riferisce questa dichiarazione è conforme alla/e seguente/i norma/o documento/i
normativo/i.
The requirements of the European Council:
Safety: Directive 2006/95/EC
EN 60065:2002 /A1:2006
EMC: Directive 2004/108/EC
EN 55103-1:1996
EN 55103-2:1996
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LED Safety Notices
Avid hardware might contain LED or Laser devices for communication use. These devices are compliant
with the requirements for Class 1 LED and Laser Products and are safe in the intended use. In normal
operation the output of these laser devices does not exceed the exposure limit of the eye and cannot
cause harm.
Standard to which conformity is declared: (IEC 60825-1)
Optical connections are located on the rear panel and are typically labeled “Optical” or “SPDIF/ADAT.”
The exact location of optical connections is identified more clearly elsewhere in the documentation for
the Avid hardware device.
Disposal of Waste Equipment by Users in the
European Union
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Rack-mount Requirements
The following rack-mount requirements are listed below:
• Elevated Operating Ambient — If installed in a closed or multi-unit rack assembly, the operating ambient
temperature of the rack environment might be greater than room ambient. Therefore, consider installing the
equipment in an environment compatible with the maximum ambient temperature (Tma) specified by the
manufacturer.
• Reduced Air Flow — Installation of the equipment in a rack should be such that the amount of air flow
required for safe operation of the equipment is not compromised. Do not block vents.
• Mechanical Loading — Mounting of the equipment in the rack should be such that a hazardous condition is
not achieved due to uneven mechanical loading.
• Circuit Overloading — Consideration should be given to the connection of the equipment to the supply
circuit and the effect that overloading of the circuits might have on overcurrent protection and supply wiring.
Appropriate consideration of equipment nameplate ratings should be used when addressing this concern.
• Reliable earthing — Reliable earthing of rack-mounted equipment should be maintained. Particular
attention should be given to supply connections other than direct connections to the branch circuit (for
example, use of power strips).
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Lithium Battery Replacement
If a battery is supplied in this Avid product it must only be replaced by qualified personnel. Contact Avid
Customer Support for assistance.
WARNING
Danger of explosion if battery is incorrectly replaced. Replace with only the same or equivalent type
recommended by the manufacturer. Dispose of used batteries according to the manufacturer’s
instructions.
ADVARSEL!
Lithiumbatteri - Eksplosionsfare ved fejlagtig håndtering. Udskiftning må kun ske med batteri af
samme fabrikat og type. Levér det brugte batteri tilbage til leverandøren.
ADVARSEL!
Lithiumbatteri - Eksplosjonsfare. Ved utskifting benyttes kun batteri som anbefalt av
apparatfabrikanten. Brukt batteri returneres apparatleverandøren.
VARNING
Explosionsfara vid felaktigt batteribyte. Använd samma batterityp eller en ekvivalent typ som
rekommenderas av apparattillverkaren. Kassera använt batteri enligt fabrikantens instruktion.
VAROITUS
Paristo voi räjähtää, jos se on virheellisesti asennettu. Vaihda paristo ainoastaan laitevalmistajan
suosittelemaan tyyppiin. Hävitä käytetty paristo valmistajan ohjeiden mukaisesti.
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Euphonix FC726 Format Converter Operation Manual
Table of Contents
List of Figures ...................................................................................................................... vii
List of Tables ....................................................................................................................... viii
Chapter 1:
Introduction and Interface ..................................................................9
1.1 Basic Concepts........................................................................................10
1.1.1 Channels and Banks....................................................................10
1.1.2 Signal Flow .................................................................................10
1.1.3 Format A Inputs ..........................................................................11
1.1.4 Sample Rate Conversion.............................................................11
1.2 Front Panel ..............................................................................................12
1.3 Rear Panel ...............................................................................................15
Chapter 2:
Operating Instructions .......................................................................21
2.1 SDIF-2 ....................................................................................................21
2.2 TDIF........................................................................................................21
2.3 ADAT .....................................................................................................22
2.4 ProDigi....................................................................................................22
2.5 AES .........................................................................................................23
2.6 Converting Between Third-Party Formats..............................................24
2.6.1 Using Two Units (56 Bidirectional Channels) ...........................24
2.6.2 Using One Unit (24 Bidirectional Channels)..............................24
2.7
Specifications..........................................................................................25
Appendix A: Pinout and Cable Specifications ..................................................27
A.1 AES/EBU DB-25....................................................................................27
A.2 Third-Party Devices ................................................................................29
A.2.1 TDIF............................................................................................30
A.2.2 SDIF............................................................................................32
A.2.3 ProDigi........................................................................................36
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Euphonix FC726 Format Converter Users Manual
List of Figures
1-1
FC726 front panel ..............................................................................................................12
1-2
FC726 front panel (left) .....................................................................................................12
1-3
FC726 front panel (right) ...................................................................................................14
1-4
FC726 rear panel................................................................................................................15
1-5
FC726 rear panel (left).......................................................................................................15
1-6
FC726 rear panel (right) ....................................................................................................18
A-1
AES DB-25 breakout cable assembly diagram..................................................................27
A-2
DB-50-to-DB-25 TDIF cable assembly diagram...............................................................30
A-3
DB-50 MX3-to-DB-50 Male/Female SDIF cable assembly diagram ...............................32
A-4
DB-50 Male/Male-to-DB-50 Male/Female ProDigi cable assembly diagram ..................36
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Euphonix FC726 Format Converter Users Manual
List of Tables
1-1
Digital audio formats supported by the FC726................................................................. 9
A-1 AES/EBU DB-25 connector pinout................................................................................ 28
A-2 Common DB-50 connector pinout and usage with third party devices.......................... 29
A-3 FC726 TDIF cable wiring specification ......................................................................... 31
A-4 FC726 SDIF cable wiring specification.......................................................................... 33
A-4 FC726 SDIF cable wiring specification continued......................................................... 34
A-4 FC726 SDIF cable wiring specification continued......................................................... 35
A-5 FC726 ProDigi cable wiring specification...................................................................... 37
A-5 FC726 ProDigi cable wiring specification continued..................................................... 38
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Euphonix FC726 Format Converter Users Manual
Chapter 1: Introduction and Interface
The Euphonix FC726 is a compact, 2U, digital-audio format converter that translates
back and forth between MADI (Multichannel Audio Digital Interface) and the digital
audio formats listed in Table 1-1. AES/EBU outputs are always available, regardless of
the formats being translated. The FC726 performs the highest quality sample-rate
conversion (SRC) on all channels that require it.
The FC726 sets a new standard for format conversion devices with the following features:
•
Can apply different format conversion and/or SRC to each bank of eight channels.
•
Automatically applies SRC when necessary but can be manually disabled.
•
Performs format conversion and SRC on more channels (56) than other devices.
•
Each of the 56 channels is bidirectional.
•
Supports 24-bit audio at a 96 kHz sample rate.
•
Maintains compatibility with older devices by offering 16- or 20-bit dithering and
supporting 96 kHz legacy standards.
Table 1-1 Digital audio formats supported by the FC726
Company/
Organization
Format Name
Equipment Using Format
Transmission
Medium
MADI
Euphonix R-1, S-5, Sony 3348, many
large format digital consoles
BNC cable
AES/EBU (AES-3)
Sony PCM-800, most DAT machines
and stereo D/A devices, sound cards,
effects processors
Two balanced XLR
cables
Tascam
TDIF-1 (Teac Digital
Interface Format)
Tascam DA-88, DA-98, small format
digital consoles and workstations
25-pin cable
Mitsubishi
ProDigi
Otari and Mitsubishi digital multitracks
Two 50-pin cables
Sony
SDIF-2
Sony 3324 and 3348
Two 50-pin cables
Alesis
ADAT Optical
Alesis ADAT (type I and II), many small
format digital consoles and workstations
Two fiber optic
cables
Audio Engineers
Society
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Euphonix FC726 Format Converter Users Manual
Introduction and Interface
The utility and power of the FC726 is exhibited by transferring digital audio between
incompatible devices:
•
Mixdown on a Euphonix System 5 digital console at 24-bit 96 kHz with source
material from a ProDigi or Sony tape machine at 48 kHz (automatic SRC).
•
Mixdown on a Euphonix System 5 digital console from a audio workstation.
•
Transfer tracks from a Tascam DA-88, Sony 3348, or Alesis ADAT to a Euphonix R-1.
The audio remains entirely in the digital domain so it suffers no degradation due to D/A
and A/D conversion.
1.1
Basic Concepts
1.1.1
Channels and Banks
The FC726 can convert 56 digital audio channels in two directions simultaneously (simultaneous bidirectional conversion) with any of the supported devices. The 56 channels
are divided into seven banks, each with eight channels. Each bank may be connected to
a different third-party device running at a different sample rate (i.e., Tascam DA-88 on
channels 1–8, ADAT on 9–16, and AES/EBU on 40–48).
1.1.2
Signal Flow
Since 56 channels can be converted bidirectionally, signal routing can become confusing.
These simple rules should help clarify the signal flow:
•
Audio arriving at the MADI B Input is sent out the Format A Output.
•
Audio arriving at the Format A connectors is sent out the MADI B Output.
•
The AES outputs always mirror the Format A Output.
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Euphonix FC726 Format Converter Users Manual
1.1.3
Introduction and Interface
Format A Inputs
Three connectors can be used by third-party inputs: the common DB-50 connectors, the
MADI A Inputs, and the DB-25 AES connectors. The appropriate signal is chosen
according to the following rules:
•
If the MADI switch is ON, the MADI input is used for all 56 channels.
•
If the MADI switch is OFF, either the common DB-50 or AES signals are used in
eight-channel banks.
If only one connector is in use, that format is selected.
If both are connected, the common DB-50 signal takes precedence.
Format A Adapters
To create a compact 2U device with maximum flexibility, the FC726 uses a common
DB-50 connector for all third-party formats. An adapter is required to convert from the
DB-50 connector to the company’s own connector. The adapter is not intended to be
the connecting cable; it simply adapts the common DB-50 connector so it behaves like
the rear panel of the third-party device. These adapters are available separately from
Euphonix. In most cases, another cable is required to connect the adapter to the thirdparty device. See Appendix A: Pinout and Cable Specifications for detailed information.
1.1.4
Sample Rate Conversion
Digital audio devices have previously been required to use the same sample rate to operate correctly together. The FC726 removes this limitation by allowing many sample
rates simultaneously. For example, by using the common DB-50 connectors, each
eight-channel bank can operate at its own sample rate. Furthermore, the FC726 detects
different sample rates and automatically activates SRC.
Although the FC726’s SRC is the highest quality available, some users may still
require an unaltered, bit-for-bit copy of the data. In this case, connected devices can
be slaved to the same sample clock, which disables SRC automatically (you can
also disable SRC manually).
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Euphonix FC726 Format Converter Users Manual
1.2
Introduction and Interface
Front Panel
The FC726’s front panel is shown in Figure 1-1. Enlarged sections of the front panel
are shown in Figure 1-2 and Figure 1-3; the numbers in the figures correspond to the
numbered items below describing that feature.
Figure 1-1 FC726 front panel
2
1
3
4
3
4
3
4
3
3
4
4
Figure 1-2 FC726 front panel (left)
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Euphonix FC726 Format Converter Users Manual
1.
Introduction and Interface
MADI Switch
This three-position switch selects whether MADI is used for the Format A Input
and the characteristics of the MADI signal.
ON-STD: Selects the standard MADI settings used by Euphonix (sample rate =
frame rate).
OFF: Selects the common DB-50 connectors and ignores the Format A MADI
inputs. Use this setting with SDIF, TDIF, ProDigi, ADAT, or AES devices.
ON-ALT: Selects MADI running at sample rate = 96 kHz, frame rate = 48 kHz.
2.
SRC ENABLE Button
This button lights when the FC726 detects different sample rates on the A and B
formats and SRC is being used. Press the button when lit to turn off SRC. The
button flashes if SRC is needed but has been disabled by the user. Press the button
again to reset the FC726’s automatic SRC detection circuitry.
When a device first locks to the FC726, the button may occasionally light to indicate
SRC is necessary when it is not. Press the button twice to reset the FC726’s automatic SRC detection circuitry. SRC is not needed if the button does not light.
3.
FORMAT A Input Indicator LEDs
Each eight-channel bank has seven LEDs to indicate the format attached to the
Format A Input; only one of these LEDs can be lit at a time. The LED lights dimly
yellow if an adapter is attached but the FC726 has not locked; the LED lights
bright yellow when the FC726 locks to the device.
The bottom SRC LED functions independently of the first seven. It lights red if
the FC726 has detected that SRC is required on that bank; it flashes red if SRC is
required but has been disabled by the user.
4.
OUTPUT BIT DEPTH Select Switch
For each eight-channel bank, this switch sets the bit depth for the signal output to
the Format A device. When set to 24, all 24 bits are transferred from the MADI
input to the Format A output device without dithering. When set to 20 or 16, the
signal is dithered to the selected number of bits before being output to the Format
A device.
NOTE: This switch affects the Format A output only; it has no effect on the Format B
MADI audio output.
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Euphonix FC726 Format Converter Users Manual
5
Introduction and Interface
6
7
Figure 1-3 FC726 front panel (right)
5.
FORMAT B Sample Rate LEDs
These LEDs indicate the Format B sample rate. If the rate is not 44.1, 48, or 96 kHz
(±3%), the CUSTOM LED lights. Since the FC726 supports SRC, Format A may
operate at several sample rates that are not indicated by individual LEDs.
6.
FORMAT B Sync Source LEDs
These LEDs shows Format B’s sync source. The blue button below the AUTO
LED manually toggles the sync source sequentially from AUTO to AES,
WORD, MADI, and FORMAT A. When set to AUTO, the FC726 accepts the
first sync signal detected with the following priority: AES, WORD, MADI, and
FORMAT A. For example, if MADI and Format A sync are both present, the
selected source will be MADI because it is higher in the priority list.
7.
Power Switch
This switch turns power to the FC726 on or off.
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Euphonix FC726 Format Converter Users Manual
1.3
Introduction and Interface
Rear Panel
The FC726’s rear panel is shown in Figure 1-4. Enlarged sections of the rear panel
are shown in Figure 1-5 and Figure 1-6; the numbers in the figures correspond to the
numbered items below describing that feature.
Figure 1-4 FC726 rear panel
6
3
3
AES 49-56
FMT A
FMT B
AES STEREO
AES 41-48
3
AES 33-40
3
3
AES 25-32
AES 17-24
AES MONO
FMT A
AES/FMT B/FMT A
SERVICE
FC726
1
EUPHONIX, INC.
PALO ALTO
MADE IN THE U.S.A.
VAC
100-240
50/60Hz
CH 49-56
2
CURRENT FUSE
1.0-0.5A
2.5A
SLOW
CH 17-24
CH 9-16
2
CH 1-8
2
CH 41-48
2
CH 33-40
2
5
3
8
2
FORMAT A
IN
7
IN
SDIF-2 SYNC
AES
SYNC
or
SLAVE CLK
CH 25-32
2
AES 9
OUT
IN
SLAVE CLK
MADI A
9
4
OUT
Figure 1-5 FC726 rear panel (left)
1.
AC Power Input
Connect the power cable shipped with the FC726 to its AC input and an AC mains
power source.
2.
Format A Common DB-50 Connectors
Seven common DB-50 connectors connect third-party devices to the FC726.
Each connector provides eight bidirectional audio channels. You must use the
appropriate adapters for each format to connect the third-party devices. See Format A Adapters on page 11.
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Euphonix FC726 Format Converter Users Manual
3.
Introduction and Interface
Format A AES Connectors
Seven DB-25 connectors connect AES devices to the FC726. Each connector provides eight bidirectional channels (four AES pairs). To connect to the third-party devices, use the DB-25-to-XLR breakout cable available from Euphonix.
NOTE: Do not use DB-25-to-XLR breakout cables made by other companies because
the pin numbering may be incompatible! See Appendix A: Pinout and Cable
Specifications for specific cable information.
4.
Format A MADI IN and MADI OUT
The Format A MADI In and MADI Out BNC connectors interface with non-Euphonix MADI devices. At 48 kHz, MADI A provides 24-bit audio on 56 channels. At 96 kHz, only 28 24-bit audio channels (1–28) are available.
NOTE: Unlike MADI B, which has a second set of I/O connectors, MADI A provides
only 28 channels at 96 kHz.
5.
Service DB-9 Jack
This jack connects to a PC’s serial port to upgrade the FC726 firmware.
CAUTION: Do not connect anything to the Service DB-9 jack unless instructed to do
so by Euphonix technical support.
6.
DIP Switches
These eight DIP switches (numbered 1–8 from left to right) set various modes on
the FC726. Switches 3–5 and 7 are not currently implemented.
Switch #1 Bidirectional mode
Flip this switch when converting between third-party formats using one FC726
(see page 24).
Switch #2 MADI MERGE
When set to MADI MERGE (down), Format B MADI Input 1 channels 1–24 are
merged with Format B MADI Input 2 channels 1–28 and Format B MADI Input
1 channels 25–28 to form a single 56-channel input stream. Format B MADI Output 1 sends channels 1–56 and Format B MADI Output 2 sends channels 25–56
followed by 1–24 from the third-party inputs.
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Euphonix FC726 Format Converter Users Manual
Introduction and Interface
Switch #6 AES MASTER/SLAVE
When set to SLAVE (up), the Format A AES outputs lock to their corresponding
AES inputs. Within each bank, all AES outputs operate at the sample rate of the
lowest-numbered, locked AES input. For example, if the first bank (channels 1–
8) has a 44.1 kHz AES signal connected to inputs 1/2 and a 48 kHz input connected to inputs 5/6, then AES output channels 1–8 will all run at 44.1 kHz. If AES
inputs are not present on a bank, Format A will get sample clock from the Format
B Sync input. If sync is not present, Format A will then lock to the Format B Sync
Input.
When set to MASTER (down), Format A’s AES outputs get sample clock from
the Format A Sync input. If Format A sync is not present, Format A’s AES outputs
will then lock to the Format B Sync Input.
Switch #8 AES STEREO/AES MONO
Set this switch to AES Stereo (up) for the normal configuration where each AES
signal contains two discreet channels. If the sample rate is above 52 kHz (i.e., 96
or 88.2 kHz), and the AES signal connected to the FC726 implements two-wire
AES (also referred to as mono mode AES), set the switch to AES Mono (down).
This setting treats each AES signal as a single channel with a frame rate running
at half its sample rate. For example, a 96 kHz two-wire AES signal runs at 48 kHz
by using the left channel for the even samples and the right channel for the odd
samples. This switch affects both the AES inputs and outputs.
7.
Format A AES Sync In
Connect an AES sync signal to this XLR connector to synchronize the Format A
MADI signal. According to the AES specification, the AES sync signal must use
the same sample rate as the incoming MADI signal to operate correctly.
NOTE: It is possible, but not recommended, to connect a MADI signal without using
a corresponding sync signal. Providing an AES or Word sync results in lower
jitter and should be used whenever possible.
8.
SDIF-2 or SLAVE CLK IN
This connector can receive either an SDIF or slave clock sync signal. The FC726
automatically detects which signal type has been connected.
An SDIF device must send a word sync signal to this connector to properly connect to the FC726.
9.
SLAVE CLK OUT
If Slave Clk In has a valid sync signal, it is passed through to Slave Clk Out. If
Slave Clk In does not have a valid sync signal, the lowest numbered bank that is
locked and in use is selected as the clock source.
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Euphonix FC726 Format Converter Users Manual
Introduction and Interface
AES 9-16
AES 1-8
12
13
IN
THRU
IN
15
OUT
WORD SYNC
AES
SYNC
IN
14
IN
AES SYNC
OUT
OUT 1
IN 1
FORMAT B
OUT 2
IN 2
10
11
MADI A
MADI B
Figure 1-6 FC726 rear panel (right)
10. Format B MADI IN 1 and MADI OUT 1
These BNC connectors are used to interface with a MADI device. (Euphonix users
can connect these to a Studio Hub, MA703, or AM713) At 48 kHz, the Format B
MADI In 1 and MADI Out1 connectors provide 56 24-bit audio channels. At
96 kHz, they provide 28 24-bit audio channels (channels 1–28).
11. Format B MADI IN 2 and MADI OUT 2
At 96 kHz, the Format B MADI In 2and Out 2 connectors provide 28 additional
24-bit audio channels (29–56).
At 48 kHz, Format B MADI In 2 is ignored and Format B MADI Out 2 carries
the same audio as Format B MADI Out 1 but with the channel numbering reversed: Format A channels 29–56 are output on Format B MADI Out 2 channels 1–28; Format A channels 1–28 are output on Format B MADI Out 2
channels 29–56.
12. Format B AES SYNC IN
Connect an AES sync signal to this XLR connector to synchronize the Format B
MADI signal. According to the AES specification, the AES sync signal must use
the same sample rate as the incoming MADI signal to operate correctly.
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Euphonix FC726 Format Converter Users Manual
Introduction and Interface
NOTE: It is possible, but not recommended, to connect a MADI signal without using
a corresponding sync signal. Providing an AES or Word sync results in lower
jitter and should be used whenever possible.
13. Format B AES SYNC THRU
This connector outputs a copy of the Format B AES Sync In signal.
14. Format B WORD SYNC IN
Connect a word sync signal to this BNC connector to synchronize the Format B
MADI signal. According to the AES specification, the word sync signal must use
the same sample rate as the incoming MADI signal to operate correctly.
NOTE: It is possible, but not recommended, to connect a MADI signal without using
a corresponding sync signal. Providing an AES or Word sync results in lower
jitter and should be used whenever possible.
15. Format B WORD SYNC OUT
This connector outputs a copy of the Format B Word Sync In signal. However,
this output generates a word sync signal at the Format B sample rate even if nothing is connected to Format B Word Sync In. Note this important difference in
behavior from Format B AES Sync Thru.
19
Euphonix FC726 Format Converter Users Manual
Chapter 2: Operating Instructions
This chapter provides operating instructions to connect third-party devices supported
by the FC726.
2.1
SDIF-2
SDIF-2 is a 24-channel format with inputs and outputs on separate DB-50 connectors.
The FC726 SDIF-2 adapter has three DB-50 connectors, one for each eight-channel
bank (labeled 1–8, 9–16, 17–24) but they may be connected to any FC726 bank. This
allows routing the channels in eight-channel groups.
The SDIF-2 format requires connecting an external word clock on a BNC cable from the
SDIF device to the FC726’s SDIF-2 Sync input or the FC726 will not lock. Turn the
MADI switch on the FC726 front panel to OFF (center position).
2.2
TDIF
1.
Connect the TDIF adapter to the DB-50 connector(s) on the FC726’s rear panel.
2.
Turn the MADI switch on the FC726 front panel to OFF (center position).
3.
To avoid SRC, either lock the TDIF device to the MADI B device, or lock the
MADI B device to the TDIF device.
To lock the TDIF device to the MADI B device (i.e, Euphonix System 5 or R-1),
connect a word clock from the MADI device to the TDIF device’s Word Sync In.
The Format B Word Sync Out on the FC726 may be used if no other word clock
output is available. Set the TDIF device to slave to its word clock input.
To lock the MADI B device to the TDIF device, connect the TDIF device’s Word
Sync Out to the MADI B device’s word clock input (i.e, on the Euphonix Studio
Hub). Set the MADI B device to slave to its word clock input.
4.
SRC is required if the MADI B device runs at 96 kHz and the TDIF device at
48 kHz. The TDIF and MADI B devices can each run on their own internal sample
clocks without additional sync signals.
21
Euphonix FC726 Format Converter Users Manual
2.3
Operating Instructions
ADAT
1.
Connect the ADAT adapter to the DB-50 ports on the FC726 rear panel.
2.
Connect the ADAT optical cables to the ADAT rear panel and to the adapter’s
optical input and output.
3.
Turn the MADI switch on the FC726 front panel to OFF (center position).
4.
Set the ADAT adapter switch to the same setting used on the ADAT front panel.
If multiple slaved ADATs are connected, this switch should match the setting of
the first (master) ADAT. Always use the ADAT INT setting to perform SRC.
The switch on the ADAT adapter has two settings to tell the FC726 how to synchronize
to the ADAT optical device(s). Its setting depends on whether the connected ADAT
optical device slaves to the FC726 or runs on its own internal clock:
ADAT INT: The ADAT runs on its own internal clock (INT refers to internal).
ADAT DIG: The ADAT slaves to its optical (digital) inputs (DIG refers to digital).
Since the optical input comes from the FC726, this setting slaves the ADAT to
the FC726.
2.4
ProDigi
ProDigi (PD) is a 16-channel format with inputs and outputs on separate DB-50
connectors. The FC726 PD adapter has two DB-50 connectors, one for each eightchannel bank (labeled 1–8 and 9–16). They may be connected to any bank on the FC726
with one restriction: the connector labeled 1–8 must be connected to a lower-numbered
bank than the 9–16 connector. This allows the channels to be routed in eight-channel
groups. Turn the MADI switch on the FC726 front panel to OFF (center position).
22
Euphonix FC726 Format Converter Users Manual
2.5
Operating Instructions
AES
Each of the 28 AES inputs can run at a different sample rate. The following rules clarify
how the sample rate of the AES output signal is derived:
•
Within each bank, all AES outputs operate at the sample rate of the lowest-numbered
AES input that is locked. For example, if the first bank (channels 1–8) has a 44.1 kHz
AES signal connected to inputs 1/2 and a 48 kHz input connected to inputs 5/6, then
AES output channels 1–8 all run at 44.1 kHz.
•
If AES inputs are not present on a bank, but another Format A device (i.e., TDIF)
is connected and locked, the AES outputs run at the Format A sample rate for that bank.
•
If a bank has neither AES inputs nor a third-party device, the AES outputs run at the
Format B sample rate.
•
If the MADI switch is On, the AES outputs run at the Format A MADI sample rate.
Furthermore, these rules can be modified by DIP switch #6: AES Master/Slave (see
DIP Switches on page 16).
•
If the switch is set to Master (up; the default position), the rules stated above apply.
•
If the switch is set to Slave (down), the AES outputs never run at the AES input
sample rate. Instead, they follow the rules above assuming an AES input is not
present. This mode should be used to lock the connected AES device to the AES
output of the FC726.
23
Euphonix FC726 Format Converter Users Manual
Operating Instructions
2.6
Converting Between Third-Party Formats
2.6.1
Using Two Units (56 Bidirectional Channels)
1.
Connect Format B MADI Input of the first FC726 to the Format B MADI Output
of the second FC726.
2.
Connect Format B MADI Input of the second FC726 to the Format B MADI Output of the first FC726.
3.
At 48 kHz, use the In1 and Out1 connectors; at 96 kHz, use In1 and Out1 and In2
and Out2 connectors.
4.
Connect the third-party devices as described in their sections of this chapter.
5.
Connect a common sync source to both FC726s and all attached third-party devices.
NOTE: Do not allow both FC726s to attempt to lock to each other’s MADI input.
2.6.2
Using One Unit (24 Bidirectional Channels)
1.
Move dip switch #1 to the down position.
2.
Loop Format B MADI Out 2 to Format B MADI In 1.
3.
If there is no sync on Format B, select Format A as the sync source from the front
panel.
4.
Connect the third-party I/O devices.
The conversion is from third-party I/O channels 1–24 to channels 25–48. As always, all
third-party inputs are still converted to Format B MADI Out 1.
For example, to convert 24 channels of ADAT to 24 channels TDIF (DA88), connect
ADAT to third-party channels 1–24, connect the three DA88s to channels 25–48 and
follow the steps above.
24
Euphonix FC726 Format Converter Users Manual
2.7
Operating Instructions
Specifications
FC726 Performance Specifications
Sync Sources
AES, word clock, MADI, Format A
Sync Outputs
AES thru and word clock out
Sync Detection
Auto or switched
Format A Audio Inputs
56 digital
AES (DB25), transformer isolated, 110 Ω
Third-Party I/O (DB50)
MADI (BNC), 75 Ω
Format A Audio Outputs
56 digital
AES (DB25), transformer isolated, 110 Ω
Third-Party I/O (DB50)
MADI (BNC), 75 Ω
Signal-to-Noise Ratio
144 dB (unweighted)
120 dB (unweighted) with SRC engaged
Group Delay
SRC Off - 4 Fs
SRC On - 4 Fs + ms delay (43/Fs input + 45/Fs output)
Format B MADI Inputs
BNC 75 Ω
56 channels at 44.1/48 kHz
28 channels at 88.2/96 kHz
Format B MADI Output
BNC 75 Ω
56 channels at 44.1/48 kHz
28 channels at 88.2/96 kHz
FC726 Technical Specifications
Power Requirements
110–240 VAC; 50 or 60 Hz (Auto-ranging)
Power Consumption
1A
Temperature of Operation
5–35°C
Dimensions
Height: 3.5 in (89 mm); Width: 19 in (483 mm); Depth: 18.25 in (470 mm)
Weight: 13.5 lb (6 kg)
25
Euphonix FC726 Format Converter Users Manual
Operating Instructions
26
Euphonix FC726 Format Converter Users Manual
Appendix A: Pinout and Cable Specifications
This appendix provides detailed information about the FC726’s connectors for those
who wish to create or repair their own cables. Contact Euphonix for a list of the adapters
and cables available for third-party devices.
NOTE: The ADAT requires an adapter that contains active electronics with a DB-50
connector on one end and an ADAT optical connector on the other. This adapter
cannot be constructed using the information presented in this appendix; contact
Euphonix for this adapter.
A.1
AES/EBU DB-25
Figure A-1 shows the cable diagram. Table A-1 shows the pinout for the FC726’s
AES/EBU DB-25 connector.
Approx. 1 meter
(38-40 inches)
10 inches
each pigtail
ITEM 1
Db25 male
connector and metal
backshell assy with
thumbscrews or
jackscrews.
J1
Label cable with Euphonix
part number and Rev
letter as shown
J2
ITEM 5
Shrink tubing
ITEM 3
3-pin XLR
male connector
(4 places)
J3
J4
DB25
M
AES/EBU
P/N 030-07658-01 REV B
J5
J6
ITEM 2
AES/EBU Snake
cable with 8
cores
J7
J8
Typical: 110 Ohm AES core, each
core individually shielded.
NOTE Tie each shield to pin 1 of
each destination XLR connector
TABLE 1
Cable Label Details
Conn.
Label
DB25-M AES/EBU 030-07658-01 Rev
XLR-J1
1 & 2 OUT
XLR-J2
3 & 4 OUT
XLR-J3
5 & 6 OUT
XLR-J4
7 & 8 OUT
XLR-J5
1 & 2 IN
XLR-J6
3 & 4 IN
XLR-J7
5 & 6 IN
XLR-J8
7 & 8 IN
PARTS LIST
Item
Qty
1
2
1
1 meter
3
4
5
4
4
2 inch
Euph P/N
ITEM 4
3-pin XLR
Female (4 Places)
Each XLR pigtail
destination label
(See Table 1 for
Nomenclature)
Mfr
Mfr P/N
Description
AMP
Mogami
Alternate: Belden
Neutrik
Neutrik
HD-20 series
3162
1805A
NC3MX
NC3FX
DB25-M D-sub & shell
AES/EBU snake cable
AES/EBU snake cable
3 p XLR M
3 p XLR F
.75 OD shrink tubing
Figure A-1 AES DB-25 breakout cable assembly diagram
27
Euphonix FC726 Format Converter Users Manual
Pinout and Cable Specifications
Table A-1 AES/EBU DB-25 connector pinout
Pin
Description
Pin 1
Pin 2
N/C
Channel 1 / 2 In (COLD)
Pin 3
Channel 3 / 4 In (GND)
Pin 4
Channel 3 / 4 In (HOT)
Pin 5
Channel 5 / 6 In (COLD)
Pin 6
Channel 7 / 8 In (GND)
Pin 7
Channel 7 / 8 In (HOT)
Pin 8
Channel 1 / 2 Out (COLD)
Pin 9
Channel 3 / 4 Out (GND)
Pin 10
Channel 3 / 4 Out (HOT)
Pin 11
Channel 5 / 6 Out (COLD)
Pin 12
Channel 7 / 8 Out (GND)
Pin 13
Channel 7 / 8 Out (HOT)
Pin 14
Channel 1 / 2 In (GND)
Pin 15
Channel 1 / 2 In (HOT)
Pin 16
Channel 3/ 4 In (COLD)
Pin 17
Channel 5 / 6 In (GND)
Pin 18
Channel 5 / 6 In (HOT)
Pin 19
Channel 7 / 8 In (COLD)
Pin 20
Channel 1 / 2 Out (GND)
Pin 21
Channel 1 / 2 Out (HOT)
Pin 22
Channel 3 / 4 Out (COLD)
Pin 23
Channel 5 / 6 Out (GND)
Pin 24
Channel 5 / 6 Out (HOT)
Pin 25
Channel 7 / 8 Out (COLD)
NOTE: In and Out are from the FC726’s perspective.
28
Euphonix FC726 Format Converter Users Manual
A.2
Pinout and Cable Specifications
Third-Party Devices
Table A-2 Common DB-50 connector pinout and usage with third party devices
Pin #
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
Common Connector
(DB50 Female)
In 1+
In 1In 2+
In 2In 3+
In 3In 4+
In 4GND
In 5+/GP In A
In 5In 6+/GP In B
In 6In 7+/GP In C
In 7In 8+/GP In D
In 8Cable ID2
Cable ID1
Cable ID0
Bit Clk In+
Bit Clk InGND
Word Clk In+
Word Clk InOut 1+
Out 1Out 2+
Out 2Out 3+
Out 3Out 4+
Out 4Out 5+/GP Out A
Out 5Out 6+/GP Out B
Out 6Out 7+/GP Out C
Out 7Out 8+/GP Out D
Out 8Bit Clk Out+
Bit Clk OutGND
Word Clk Out+
Word Clk OutExtra In/GP In E+
Extra In/GP In ENC
GND
SDIF usage
In 1+
In 1In 3+
In 3In 5+
In 5In 7+
In 7GND
In 2+
In 2In 4+
In 4In 6+
In 6In 8+
In 80 (tie to pin 23)
0 (tie to pin 23)
1 (NC)
NC
NC
GND
NC
NC
Out 1+
Out 1Out 3+
Out 3Out 5+
Out 5Out 7+
Out 7Out 2+
Out 2Out 4+
Out 4Out 6+
Out 6Out 8+
Out 8NC
NC
GND
NC
NC
NC
NC
NC
GND
TDIF usage
NC
In 1/2
NC
In 3/4
NC
In 5/6
NC
In 7/8
GND
NC
NC
NC
NC
NC
NC
NC
NC
0 (tie to pin 23)
1 (NC)
0 (tie to pin 23)
NC
NC
GND
In LR Clk
NC
NC
Out 1/2
NC
Out 3/4
NC
Out 5/6
NC
Out 7/8
FS0 out
NC
FS1 out
NC
Emph Out
NC
NC
NC
NC
NC
GND
Out LR Clk
NC
NC
NC
NC
GND
ProDigi usage
In 1+
In 1In 3+
In 3In 5+
In 5In 7+
In 7GND
In 2+
In 2In 4+
In 4In 6+
In 6In 8+
In 80 (tie to pin 23)
1 (NC)
1 (NC)
Bit Clk In+
Bit Clk InGND
Word Clk In+
Word Clk InOut 1+
Out 1Out 3+
Out 3Out 5+
Out 5Out 7+
Out 7Out 2+
Out 2Out 4+
Out 4Out 6+
Out 6Out 8+
Out 8Bit Clk Out+
Bit Clk OutGND
Word Clk Out+
Word Clk OutNC
NC
NC
GND
NOTE: In and Out are from the FC726’s perspective.
29
ADAT usage
In 1/2
NC
In 3/4
NC
In 5/6
NC
In 7/8
NC
GND
Error In
NC
User0 In
NC
User1 In
NC
Mstr/Slv IN
NC
1 (NC)
0 (tie to pin 23)
0 (tie to pin 23)
Bit Clk In
NC
GND
Word Clk In
GND
Out 1/2
NC
Out 3/4
NC
Out 5/6
NC
Out 7/8
NC
Mute Out
NC
NC
NC
NC
NC
NC
NC
Bit Clk Out
GND
GND
Word Clk Out
GND
DVCO In
NC
Vcc
GND
Euphonix FC726 Format Converter Users Manual
A.2.1
Pinout and Cable Specifications
TDIF
Figure A-2 shows the cable diagram. Table A-3 shows the pinout for the FC726’s TDIF
connector.
Approx. 1 meter
(38 to 40 inches)
Portion of braided shield pulled
back over cable insulation to
contact the cable clamp.
Heat shrink tubing to cover and
contain the exposed braid tails
Cable labels
(typical)
J1
TDIF
CH 1-8
P/N 030-07657-01 Rev C
TDIF
ITEM 3
SCSI cable, braided shield, low capacitance,
25 twisted pairs. Braided shields on both ends
clamped to metal backshells.
PARTS LIST
Item
Qty
1
2
3
1
1
40 inches
ITEM 2
DB-25 male with
metal backshell assembly
All conductors are not required.
Cut off unused wires at both ends.
ITEM 1
DB-50 male metal backshell assembly
including thumb- or jack-screws
Mfr
AMP
AMP
Madison
Mfr P/N
Description
HDP-20 series
HDP-20 series
50SDK00130 (or equiv)
DB50-M
DB25-M
SCSI cable, 25 pairs
Figure A-2 DB-50-to-DB-25 TDIF cable assembly diagram
30
J2
Euphonix FC726 Format Converter Users Manual
Pinout and Cable Specifications
Table A-3 FC726 TDIF cable wiring specification
Connector Pin Connection
J1
1 NC
J1
2 J2-1
J1
3 NC
J1
4 J2-2
J1
5 NC
J1
6 J2-3
J1
7 NC
J1
8 J2-4
J1
9 J2-7,24,25
J1
10 NC
J1
11 NC
J1
12 NC
J1
13 NC
J1
14 NC
J1
15 NC
J1
16 NC
J1
17 NC
J1
18 J1-23
J1
19 NC
J1
20 J1-23
J1
21 NC
J1
22 NC
J1
23 J2-17,J1-18,J1-20
J1
24 J2-5
J1
25 NC
J1
26 NC
J1
27 J2-13
J1
28 NC
J1
29 J2-12
J1
30 NC
J1
31 J2-11
J1
32 NC
J1
33 J2-10
J1
34 J2-8
J1
35 NC
J1
36 J2-20
J1
37 NC
J1
38 J2-21
J1
39 NC
J1
40 NC
J1
41 NC
J1
42 NC
J1
43 NC
J1
44 J2-22,23
J1
45 J2-9
J1
46 NC
J1
47 NC
J1
48 NC
J1
49 NC
J1
50 J2-14,15,16
Description
In 1/2
In 3/4
In 5/6
In 7/8
GND
Notes:
J1 = DB-50 male
J2 = DB-25 male
Twisted pairs:
J2-1/14
J2-2/15
J2-3/16
J2-4/17
J2-5/7
J2-9/22
J2-11/23
J2-12/24
J2-13/25
The rest don't matter
Cable ID
Cable ID
Cable ID
GND
Word Clock In
In and Out are from the FC727's perspective.
Out 1/2
Out 3/4
Out 5/6
Out 7/8
FS0 Out
FS1 Out
Emph Out
GND
Word Clock Out
GND
31
Euphonix FC726 Format Converter Users Manual
A.2.2
Pinout and Cable Specifications
SDIF
Figure A-3 shows the cable diagram. Table A-4 shows the pinout for the FC726’s SDIF
connector.
Approx. 1 meter
(38 to 40 inches)
10 inches
Pigtail Length
Portion of braided shield pulled
back over cable insulation to
contact the cable clamp (typical)
J1
IF
SD 1-8
CH
16 pairs breakout (8 from each
RS422 trunk) to destinations, 10
inches in sheath, add tubular
braided shield, then insulating outer
protective covering (heat shrink)
Label (typical)
J4
IF
To SD
OUT
1
P/N
J2
J3
6-0
0765
030- B
v
e
R
ITEM 4
SCSI cable
Braided shield,
low capacitance,
25 twisted pairs
SDIF
CH 9-16
Intersection
Tie together and
solder all shields
from the two 25-pair
trunks and the three
16-pair breakout
groups here. Add
Heat shrink tubing
after the operation.
IF 4
SD 7-2
1
CH
To SDIF
IN
J5
24 pairs used out of 25
available. Split into 3
groups of 8 pairs per
the wiring table. Route
to destinations after the
intersection.
ITEM 1 (J1, J2, J3)
DB-50 male with
metal backshell
PARTS LIST
Item
Qty
1
2
3
4
4
1
2 inches
40 inches
ITEM 1 (J4)
DB-50 male with
metal backshell
ITEM 2 (J5)
DB-50 female
with metal backshell
Mfr
Mfr P/N
Description
AMP
AMP
HDP-20 series
HDP-20 series
Madison
50SDK00130 (or equiv)
DB-50 Male
DB-50 Female
3/4" Heatshrink
SCSI cable, 25 pairs
Figure A-3 DB-50 MX3-to-DB-50 Male/Female SDIF cable assembly diagram
32
Euphonix FC726 Format Converter Users Manual
Pinout and Cable Specifications
Table A-4 FC726 SDIF cable wiring specification
Connector Pin Connection
J1
1 J4-2
J1
2 J4-1
J1
3 J4-6
J1
4 J4-5
J1
5 J4-10
J1
6 J4-9
J1
7 J4-14
J1
8 J4-13
J1
9 NC (GND)
J1
10 J4-4
J1
11 J4-3
J1
12 J4-8
J1
13 J4-7
J1
14 J4-12
J1
15 J4-11
J1
16 J4-16
J1
17 J4-15
J1
18 J1-23
J1
19 J1-23
J1
20 NC
J1
21 NC
J1
22 NC
J1
23 J1-18,19
J1
24 NC
J1
25 NC
J1
26 J5-2
J1
27 J5-1
J1
28 J5-6
J1
29 J5-5
J1
30 J5-10
J1
31 J5-9
J1
32 J5-14
J1
33 J5-13
J1
34 J5-4
J1
35 J5-3
J1
36 J5-8
J1
37 J5-7
J1
38 J5-12
J1
39 J5-11
J1
40 J5-16
J1
41 J5-15
J1
42 NC
J1
43 NC
J1
44 NC
J1
45 NC
J1
46 NC
J1
47 NC
J1
48 NC
J1
49 NC
J1
50 NC
Description
In 1+
In 1In 3+
In 3In 5+
In 5In 7+
In 7In 2+
In 2In 4+
In 4In 6+
In 6In 8+
In 8Cable ID
Cable ID
Cable ID
Notes:
J1,J2,J3 = DB-50 male
J4 = DB-50 male
J5 = DB-50 female
Jx-x
Jx-x
denotes twisted pair
In and Out are from the FC727's perspective.
GND
Out 1+
Out 1Out 3+
Out 3Out 5+
Out 5Out 7+
Out 7Out 2+
Out 2Out 4+
Out 4Out 6+
Out 6Out 8+
Out 8-
33
Euphonix FC726 Format Converter Users Manual
Pinout and Cable Specifications
Table A-4 FC726 SDIF cable wiring specification continued
Connector Pin Connection
J2
1 J4-18
J2
2 J4-17
J2
3 J4-22
J2
4 J4-21
J2
5 J4-26
J2
6 J4-25
J2
7 J4-30
J2
8 J4-29
J2
9 NC
J2
10 J4-20
J2
11 J4-19
J2
12 J4-24
J2
13 J4-23
J2
14 J4-28
J2
15 J4-27
J2
16 J4-32
J2
17 J4-31
J2
18 J2-23
J2
19 J2-23
J2
20 NC
J2
21 NC
J2
22 NC
J2
23 J2-18,19
J2
24 NC
J2
25 NC
J2
26 J5-18
J2
27 J5-17
J2
28 J5-22
J2
29 J5-21
J2
30 J5-26
J2
31 J5-25
J2
32 J5-30
J2
33 J5-29
J2
34 J5-20
J2
35 J5-19
J2
36 J5-24
J2
37 J5-23
J2
38 J5-28
J2
39 J5-27
J2
40 J5-32
J2
41 J5-31
J2
42 NC
J2
43 NC
J2
44 NC
J2
45 NC
J2
46 NC
J2
47 NC
J2
48 NC
J2
49 NC
J2
50 NC
34
Description
In 9+
In 9In 11+
In 11In 13+
In 13In 15+
In 15In 10+
In 10In 12+
In 12In 14+
In 14In 16+
In 16Cable ID
Cable ID
Cable ID
GND
Out 9+
Out 9Out 11+
Out 11Out 13+
Out 13Out 15+
Out 15Out 10+
Out 10Out 12+
Out 12Out 14+
Out 14Out 16+
Out 16-
Euphonix FC726 Format Converter Users Manual
Pinout and Cable Specifications
Table A-4 FC726 SDIF cable wiring specification continued
Connector Pin Connection
J3
1 J4-34
J3
2 J4-33
J3
3 J4-38
J3
4 J4-37
J3
5 J4-42
J3
6 J4-41
J3
7 J4-46
J3
8 J4-45
J3
9 NC
J3
10 J4-36
J3
11 J4-35
J3
12 J4-40
J3
13 J4-39
J3
14 J4-44
J3
15 J4-43
J3
16 J4-48
J3
17 J4-47
J3
18 J3-23
J3
19 J3-23
J3
20 NC
J3
21 NC
J3
22 NC
J3
23 J3-18,19
J3
24 NC
J3
25 NC
J3
26 J5-34
J3
27 J5-33
J3
28 J5-38
J3
29 J5-37
J3
30 J5-42
J3
31 J5-41
J3
32 J5-46
J3
33 J5-45
J3
34 J5-36
J3
35 J5-35
J3
36 J5-40
J3
37 J5-39
J3
38 J5-44
J3
39 J5-43
J3
40 J5-48
J3
41 J5-47
J3
42 NC
J3
43 NC
J3
44 NC
J3
45 NC
J3
46 NC
J3
47 NC
J3
48 NC
J3
49 NC
J3
50 NC
35
Description
In 17+
In 17In 19+
In 19In 21+
In 21In 23+
In 23In 18+
In 18In 20+
In 20In 22+
In 22In 24+
In 24Cable ID
Cable ID
Cable ID
GND
Out 17+
Out 17Out 19+
Out 19Out 21+
Out 21Out 23+
Out 23Out 18+
Out 18Out 20+
Out 20Out 22+
Out 22Out 24+
Out 24-
Euphonix FC726 Format Converter Users Manual
A.2.3
Pinout and Cable Specifications
ProDigi
Figure A-4 shows the cable diagram. Table A-5 shows the pinout for the FC726’s
ProDigi connector.
Approx. 1 meter
(38 to 40 inches)
10 inches
each pigtail
1
Portion of braided shield pulled
back over cable insulation to
contact the cable clamp (typical)
J1
gi
Di
o- -8
Pr h 1
C
Intersection area: Wires from
main trunks cross over and route to
destinations. All braided shields
electrically connected here.
J3
igi
-D
To Pro
OUT
1
1
P/N
-0
7660
030-0 B
REV
Install tubular braid
shield over each
group of wires, then
add heat shrink tubing
Heat shrink to cover braid tails
Label cable with part number and Rev
4
To Pro
-Digi
IN
J4
J2
8 pairs from J3 + 8 pairs from
J4 = 16 pairs total plus several
extra wires in each pigtail to destinations.
igi
o-D 6
Pr 9-1
CH
4
2
1
PARTS LIST
Item
Qty
1
2
3
4
3
1
2 inches
80 inches
Mfr
Mfr P/N
Description
AMP
AMP
HDP-20 series
HDP-20 series
Madison
50SDK00130 (or equiv.)
DB-50 Male
DB-50 Female
3/4" Heatshrink
SCSI cable, 25 pairs
Figure A-4 DB-50 Male/Male-to-DB-50 Male/Female ProDigi cable assembly diagram
36
Euphonix FC726 Format Converter Users Manual
Pinout and Cable Specifications
Table A-5 FC726 ProDigi cable wiring specification
Connector Pin Connection
J1
1 J3-1
J1
2 J3-18
J1
3 J3-3
J1
4 J3-20
J1
5 J3-5
J1
6 J3-22
J1
7 J3-7
J1
8 J3-24
J1
9 J3-17
J1
10 J3-2
J1
11 J3-19
J1
12 J3-4
J1
13 J3-21
J1
14 J3-6
J1
15 J3-23
J1
16 J3-8
J1
17 J3-25
J1
18 J1-23
J1
19 NC
J1
20 NC
J1
21 J3-34
J1
22 J3-35
J1
23 J1-18
J1
24 J3-36
J1
25 J3-37
J1
26 J4-1
J1
27 J4-18
J1
28 J4-3
J1
29 J4-20
J1
30 J4-5
J1
31 J4-22
J1
32 J4-7
J1
33 J4-24
J1
34 J4-2
J1
35 J4-19
J1
36 J4-4
J1
37 J4-21
J1
38 J4-6
J1
39 J4-23
J1
40 J4-8
J1
41 J4-25
J1
42 J4-34
J1
43 J4-35
J1
44 NC
J1
45 J4-36
J1
46 J4-37
J1
47 NC
J1
48 NC
J1
49 NC
J1
50 J3-50
Description
In 1+
In 1In 3+
In 3In 5+
In 5In 7+
In 7GND
In 2+
In 2In 4+
In 4In 6+
In 6In 8+
In 8Cable ID
Cable ID
Cable ID
Bit Clk In+
Bit Clk InGND
Word Clk In+
Word Clk InOut 1+
Out 1Out 3+
Out 3Out 5+
Out 5Out 7+
Out 7Out 2+
Out 2Out 4+
Out 4Out 6+
Out 6Out 8+
Out 8Bit Clk Out+
Bit Clk OutWord Clk Out+
Word Clk Out-
GND
37
Notes:
J1,J2,J3 = DB-50 male
J4 = DB-50 female
Jx-x
Jx-x
denotes
twisted pair
In and Out are from
the FC727's perspective.
Euphonix FC726 Format Converter Users Manual
Pinout and Cable Specifications
Table A-5 FC726 ProDigi cable wiring specification continued
Connector Pin Connection
J2
1 J3-9
J2
2 J3-26
J2
3 J3-11
J2
4 J3-28
J2
5 J3-13
J2
6 J3-30
J2
7 J3-15
J2
8 J3-32
J2
9 J4-17
J2
10 J3-10
J2
11 J3-27
J2
12 J3-12
J2
13 J3-29
J2
14 J3-14
J2
15 J3-31
J2
16 J3-16
J2
17 J3-33
J2
18 J2-23
J2
19 NC
J2
20 NC
J2
21 NC
J2
22 NC
J2
23 J2-18
J2
24 NC
J2
25 NC
J2
26 J4-9
J2
27 J4-26
J2
28 J4-11
J2
29 J4-28
J2
30 J4-13
J2
31 J4-30
J2
32 J4-15
J2
33 J4-32
J2
34 J4-10
J2
35 J4-27
J2
36 J4-12
J2
37 J4-29
J2
38 J4-14
J2
39 J4-31
J2
40 J4-16
J2
41 J4-33
J2
42 NC
J2
43 NC
J2
44 NC
J2
45 NC
J2
46 NC
J2
47 NC
J2
48 NC
J2
49 NC
J2
50 J4-50
38
Description
In 9+
In 9In 11+
In 11In 13+
In 13In 15+
In 15GND
In 10+
In 10In 12+
In 12In 14+
In 14In 16+
In 16Cable ID
Cable ID
Cable ID
GND
Out 9+
Out 9Out 11+
Out 11Out 13+
Out 13Out 15+
Out 15Out 10+
Out 10Out 12+
Out 12Out 14+
Out 14Out 16+
Out 16-