Drawmer D62 Operator'S Manual Download Page 9

D62 OPERATORS’ MANUAL

5

CONTROL DESCRIPTION

The D62 module is a very high resolution analogue to digital
converter utilising proprietary Drawmer technology. It has a
selection of sophisticated dither options. There is a proprietary
system enabling up to 23-bit wordlength  recordings to be
made across three tracks of a digital multitrack where the
multitrack machine is less than 24-bit resolution. In the case
of the D62-T, recording is possible on a Tascam™ DA88,
DA38 or TDIF-1 compatible machine, whereas the D62-A card
provides an optical interface for Alesis ADAT™ and
compatible machines.

Various software options are available to incorporate 16, 20 or
24-bit machines.

If any WORD LENGTH yellow LED is flashing, an
unrecoverable power ‘brownout’ (voltage dip or glitch) has
caused the DSP to mute its digital outputs. Switch the power
Off and On again to restore normal operation.

REAR PANEL CONTROLS

:

There are two push-button switches on the D62-T rear connector panel.
These should only need setting during installation as they define input and
out cable preferences. 

For additional information, see the D62 Installation

section on page 3.

Input Select:

If an external word clock is available, this push button selects its source.
Either the BNC connector, the TDIF-1 or ADAT digital input can be the
1962 master clock. The front panel Sample Rate option EXT CLK activates
this clock source.

The External WORD SYNC and TDIF (ADAT) clock inputs are filtered
through a low-noise PLL (Phase Locked Loop) in the D62, the clock
frequency (sample rate) should be within the range 29KHz to 51KHz. If the
PLL cannot lock to the incoming clock reliably, the EXT CLK front panel
LED will flash indicating that audible glitches and distortion will be
introduced. 

 See page 3.

Output Select:

Selects AES/EBU via the XLR socket, or, S/PDIF via the RCA Phono
socket with appropriate data output formats.  This switch setting does not
affect the T-DIF or ADAT output.

Summary of Contents for D62

Page 1: ...i D62 OPERATORS MANUAL...

Page 2: ...GITAL CONNECTIONS page 3 CONTROL DESCRIPTIONS page 5 Rear Panel Controls page 5 1962 Front Panel Controls page 6 RECORDING NOTES page 7 DITHER SELECTOR page 8 CONFIGURATION Internal jumpers page 9 IF...

Page 3: ...cuit different from that to which the receiver is connected Consult the dealer or an experienced radio TV technician for help Unauthorised changes or modification to this system can void the users aut...

Page 4: ...THER ORAL OR WRITTEN EXPRESSED OR IMPLIED THE MANUFACTURER MAKES NO OTHER WARRANTY EITHER EXPRESS OR IMPLIED INCLUDING WITHOUT LIMITATION ANY IMPLIED WARRANTIES OF MERCHANTABILITY FITNESS FOR A PARTIC...

Page 5: ...IPMENT TO RAIN OR MOISTURE INTRODUCTION The D62 T or D62 A digital convertor module may be retrofitted to an analogue 1962 unit This provides 16 18 20 or 24 bit wordlength outputs in both AES EBU and...

Page 6: ...to within 90 of their lifetime expectancy Failure to observe correct procedures could void any product warranty To perform this installation Disconnect the mains power cable from the unit With a numbe...

Page 7: ...s ADAT When the unit is suitably connected observe the Input Select LED status to confirm the following clock conditions z The LED will illuminate brightly and steadily if a reliable and compatible cl...

Page 8: ...quality RCA type phono jack where the data conforms to the Sony Phillips Digital InterFace format Because this connector only provides an unbalanced termination the recommended maximum length for this...

Page 9: ...l operation REAR PANEL CONTROLS There are two push button switches on the D62 T rear connector panel These should only need setting during installation as they define input and out cable preferences F...

Page 10: ...ut Pre or post output level control is selectable on two internal jumper links See configuration jumpers section on page 9 In all configurations the audio signal to the D62 passes through a Soft clip...

Page 11: ...remainder bits For example when using a 16bit multitrack machine to record a stereo 24bit signal tracks 1 2 and 3 or 5 6 and 7 must be selected The third channel sounds like white noise and is used t...

Page 12: ...A particularly effective setting combining subjective neutrality with a worthwhile increase in dynamic range and high tolerance to post HF EQ 6 Shaped dither above 14KHz 20dB 7 Shaped dither above 14K...

Page 13: ...ure of the limiter 3 Any digital output level will be un calibrated unless the channel output level control is set to the 20dB position To perform this change 1 Disconnect the mains power cable from t...

Page 14: ...ainer must be used If this container is not available then the equipment must be packaged in substantial shock proof material capable of withstanding the handling for the transit CONTACTING DRAWMER Dr...

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