Tascam DA-98HR Owner's Manual

Also see for DA-98HR: Setup guide Service manual

Contents

Tascam DA-98HR Owner's Manual Manual pdf 46 page image

7 – Advanced operations–Sine oscillator46 TASCAM DA-98HR1 Move the cursor to the Release parame-ter and use the § and ¶ keys to select betweenSlow, Medium and Fast.7.9 Sine oscillatorThe DA-98HR incorporates a digital oscillator forlineup and signal tracing purposes. This oscillator isa sine-wave oscillator at either the standard tuningfrequency of 440Hz or the standard tape line-up fre-quency of 1kHz.The oscillator signal level is at the nominal signallevel of +4dBu (but note that since the oscillator is aconstant sine wave, it cannot truly be compared with“real-world” transient signals).To operate the oscillator:1 Enter menu 2, move the cursor to SineOsc. and press ENTER:2 Use the § and ¶ keys to turn the oscillatorbetween off, 440 Hz and 1 kHz.When the oscillator is turned on, it overridesall other track inputs.NOTEWhen using the oscillator, you should turn down the moni-tor levels in the control room and studio to avoid damage toyour ears (and the speakers).7.9.1 Recording the oscillatorAs mentioned above, the oscillator overrides all othertrack inputs, regardless of whether tape, digital orslot board input has been selected.Recording the oscillator test tone is therefore similarto any other recording operation (arm the appropriatetracks and record).7.10 Digital recordingThe DA-98HR is able to accept (and output) digitalsignals at the TDIF-1 (DIGITAL I/O) connector u inTDIF-1 format.It is also able to accept (and output) digital signals atthe DIGITAL (AES/EBU) I/O connector p in AES3-1992 Amendment 3-1999 format.Consult your TASCAM distributor dealer for detailsof other interface units or optional slot boards for theDA-98HR which allow connection to other equip-ment (e.g. the IF-88SD which allows conversionbetween SDIF-2 and TDIF-1 formats).The DA-98HR should be connected to other TDIF-1equipment using a PW-88D or PW-88DL connectorcable.NOTEOnly use TASCAM digital cables when making digital audioconnections to the DA-98HR. Other types of cable maycause damage to the system, and the warranty will bevoided if such damage is caused by use of the wrongcables.Make sure that the DA-98HR’s word sync clock mas-ter or slave setting is correctly made when it is con-nected to other digital equipment. There can only beone word clock master in a setup.Since the TDIF-1 format carries a word clock as partof the interface, there is no need to make a wordclock connection when recording through the DIGI-TAL I/O connector if the TDIF-equipped devices arethe only digital audio devices in the setup. If there areother digital audio devices present, make sure thatthe word sync clock is properly setup throughout thedevice chain.7.10.1 Selecting different inputs forrecordingSee the section 6.3.3, “Selecting input sources” fordetails of the input patchbay.7.10.2 Selecting input word lengthWhen data is transferred into the DA-98HR throughthe TDIF (DIGITAL I/O) u connector, the wordlength of the incoming data must be set. This can beselected from between 16-bit, 20-bit or 24-bit. To setthe word length:1 Select menu 2, move the cursor to WordLen., and press ENTER:2 Use the § and ¶ keys to change the valuebetween 16, 20 and 24 bits.We suggest that you experiment with the dither set-tings (7.12, “Dither”) if you find you are recordingquantization noise at low levels when the input wordS i n e O s c i l l a t o ro f fT D I F W o r d L e n g t h1 6 b i t