Chapter 1: Introduction to the FC726 The 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 the table below. AES/EBU outputs are always available, regardless of the formats being translated.
For example, by using the common DB-50 connec- The FC726 can convert 56 digital audio channels in two direc- tors, each eight-channel bank can operate at its own sample tions simultaneously (simultaneous bidirectional conversion) rate.
About This Guide requirements; search the online Knowledge Base or join the worldwide Avid user community on the User Conference. This guide provides a basic overview of FC726 features and functionality. Training and Education Study on your own using courses avail-...
Chapter 2: FC726 Features Front Panel The FC726 front panel is shown below. Numbers in the subsequent figures correspond to the numbered items below. FC726 Front Panel FC726 front panel (center detail) 1. MADI Switch 2. SRC ENABLE Button This three-position switch selects whether MADI is used for This button lights when the FC726 detects different sample the Format A Input and the characteristics of the MADI signal.
Page 10
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 re- quired on that bank; it flashes red if SRC is required but has been disabled by the user.
Back Panel The FC726 back panel is shown below. Numbers in the subsequent figures correspond to the numbered items below. FC726 Back Panel AES 49-56 AES 41-48 AES 33-40 AES 25-32 AES 17-24 AES 9-1 FMT A FMT B AES STEREO...
Page 12
These eight DIP switches (numbered 1–8 from left to right) set Connect an AES sync signal to this XLR connector to synchro- various modes on the FC726. Switches 3–5 and 7 are not cur- nize the Format A MADI signal. According to the AES specifi- rently implemented.
Page 13
MADI signal to operate correctly. 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. Chapter 2: FC726 Features 9...
The SDIF-2 format requires connecting an external word clock should match the setting of the first (master) ADAT. Al- on a BNC cable from the SDIF device to the FC726 SDIF-2 Sync ways use the ADAT INT setting to perform SRC.
The following rules clarify how the sample rate of the AES out- put signal is derived: Connect Format B MADI Input of the first FC726 to the For- • Within each bank, all AES outputs operate at the sample mat B MADI Output of the second FC726.
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 56 digital AES (DB25), transformer isolated, 110 Format A Audio Inputs Third-Party I/O (DB50) MADI (BNC), 75 ...
This adapter cannot be constructed using the information presented in this appendix; contact Avid for this adapter. AES/EBU DB-25 The following figure shows the cable diagram, and the table shows the pinout for the FC726 AES/EBU DB-25 connector. Approx. 1 meter (38-40 inches)
Page 20
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) In and Out are from the perspective of the FC726. FC726 Guide...
Third-Party Devices Common DB-50 Connector Pinout and Usage with Third Party Devices Common Connector (DB50 Female) SDIF usage TDIF usage ProDigi usage ADAT usage Pin # 1 In 1+ In 1+ In 1+ In 1/2 2 In 1- In 1- In 1/2 In 1- 3 In 2+...
TDIF The following figure shows the cable diagram, and the table shows the pinout for the FC726 TDIF connector. Approx. 1 meter (38 to 40 inches) Portion of braided shield pulled back over cable insulation to contact the cable clamp.
SDIF The following figure shows the cable diagram, and the table shows the pinout for the FC726 SDIF connector. Approx. 1 meter (38 to 40 inches) 10 inches Portion of braided shield pulled Pigtail Length back over cable insulation to...
Page 25
FC726 SDIF Cable Wiring Specification Connector Pin Connection Description In 1+ 1 J4-2 In 1- 2 J4-1 In 3+ 3 J4-6 In 3- 4 J4-5 In 5+ 5 J4-10 In 5- 6 J4-9 In 7+ 7 J4-14 In 7- 8 J4-13...
Page 26
FC726 SDIF Cable Wiring Specification, continued Connector Pin Connection Description In 9+ 1 J4-18 In 9- 2 J4-17 In 11+ 3 J4-22 In 11- 4 J4-21 In 13+ 5 J4-26 In 13- 6 J4-25 In 15+ 7 J4-30 In 15-...
Page 27
FC726 SDIF Cable Wiring Specification, continued Connector Pin Connection Description In 17+ 1 J4-34 In 17- 2 J4-33 In 19+ 3 J4-38 In 19- 4 J4-37 In 21+ 5 J4-42 In 21- 6 J4-41 In 23+ 7 J4-46 In 23-...
ProDigi The following figure shows the cable diagram, and the table shows the pinout for the FC726 ProDigi connector. Approx. 1 meter (38 to 40 inches) 10 inches Portion of braided shield pulled Pigtail Length back over cable insulation to...
Page 29
FC726 ProDigi Cable Wiring Specification Connector Pin Connection Description In 1+ 1 J3-1 In 1- 2 J3-18 In 3+ 3 J3-3 In 3- 4 J3-20 In 5+ 5 J3-5 In 5- 6 J3-22 In 7+ 7 J3-7 In 7- 8 J3-24...
Page 30
FC726 ProDigi Cable Wiring Specification, continued Connector Pin Connection Description In 9+ 1 J3-9 In 9- 2 J3-26 In 11+ 3 J3-11 In 11- 4 J3-28 In 13+ 5 J3-13 In 13- 6 J3-30 In 15+ 7 J3-15 In 15-...
Appendix B: Compliance Information Proposition 65 Warning Environmental Compliance This product contains chemicals, including lead, Disposal of Waste Equipment by Users in the known to the State of California to cause cancer European Union and birth defects or other reproductive harm. Wash hands after handling.
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 Any modifications to the unit, unless expressly approved by Voltage Directive 2006/95/EC. Avid, could void the user's authority to operate the equipment. FC726 Guide...
13) Unplug this equipment during lightning storms or when unused for long Safety Compliance 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 Safety Statement 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,...
Page 36
Avid Technical Support (USA) Product Information 2001 Junipero Serra Boulevard Visit the Online Support Center at For company and product information, Daly City, CA 94014-3886 USA www.avid.com/support visit us on the web at www.avid.com...
Need help?
Do you have a question about the FC726 and is the answer not in the manual?
Questions and answers