Tascam DA-78HR Owner's Manual

Also see for DA-78HR: Setup guide Technical documentation

Contents

TASCAM DA-78HR 173 - ConnectionsThis section explains how to connect other equip-ment to the DA-78HR. It is not intended as a com-plete reference to the use of the DA-78HR. See theappropriate sections for full details of how these con-nectors are used.NOTES —IM PO RTA NTWhen making connections between the DA-78HR andother equipment, whether audio or control, both the DA-78HR and the other equipment must be turnedoff, other-wise damage may be caused to the DA-78HR and/or theother equipment.Only use TASCAM-supplied and TASCAM-approvedcables when making connections to the DA-78HR. Thoughthe cables and connectors may resemble computer cables,they ser ve different purposes, and meet a different set ofspecifications. The use of cables other than TASCAMcables will at best cause the equipment to wor k erratically,and at worst cause damage to the equipment.If the use of cables other than TASCAM cablescauses or results in damage, the warranty is voided.3.1 Audio connectionsOther audio equipment can be connected to the DA-78HR either using analog or digital interfaces.Selection for the input source (analog or digital) on aglobal or individual track basis is made from themenus. See 5.3, “Input selection” for details.3.1.1 Balanced analog audioconnectionsAll balanced analog input and output audio connec-tions to the DA-78HR are made through 25-pin D-sub connectors.All these audio inputs and outputs are balanced andare rated at a nominal +4dBu level.This allows convenient and tidy cabling between theDA-78HR and other units such as the TASCAM M-1600 series of mixing consoles.It is not recommended that you make up your owncables—consult your TASCAM dealer for availabil-ity of suitable ready-made cables (and see 12.1.8,“Cables”). However, we recognize that every situa-tion has its own unique features, and there are occa-sions when a special cable must be made.Before starting to make the cable, we suggest youcontact your TASCAM dealer for full details of cablespecifications, etc.The pinouts for both the ANALOG OUTPUT andINPUT connectors are as follows:where G=ground, H=”hot” (+) and C=”cold” (–).The impedance of the inputs is 20kΩ and that of theoutputs is 10Ω.3.1.2 Unbalanced analog audioconnectionsIn addition to the balanced analog set of connections,there are eight RCA jacks for input signals and eightfor output. These are, of course, unbalanced, and thenominal signal level is –10 dBV.NOTEOnly connect and use one set of analog inputs at atime. There is no facility to switch between the twosets of analog input connectors.3.1.3 Digital audio connectionsMultitrack digital audio input and output signals arecarried on a single 25-pin D-sub connector. The sig-nals are in TDIF-1 format.To carry signals between a DA-78HR and anotherunit equipped with TDIF-1 interfaces, such as theTASCAM series of digital mixing consoles or otherDTRS recorders, use a PW-88D cable (1 meter long)or a PW-88DL cable (5 meters long).If you need to connect the DA-78HR to a digitalaudio source using a different format, we recommendthe use of the following units:• TASCAM IF-88AE Interface Unit—convertsbetween the TDIF-1 and AES/EBU formats(8 channels). It also provides SPDIF formatconversion facilities.• TASCAM IF-AE8—also provides sophisti-cated conversion facilities between the TDIF-1 and AES/EBU data formats.• TASCAM IF-88SD Interface Unit—convertsbetween the TDIF-1 and SDIF-2 digital audioformats.• The TASCAM IF-TAD—converts betweenthe TDIF-1 and ADAT data formats, using adigital optical input/output for the ADAT data.