D62 OPERATORS MANUAL i
CONTENTS SAFETY CONSIDERATIONS page 1 INTRODUCTION page 1 INSTALLATION page 1 DIGITAL CONNECTIONS page 3 CONTROL DESCRIPTIONS: " Rear Panel Controls " 1962 Front Panel Controls page 5 page 5 page 6 RECORDING NOTES page 7 DITHER SELECTOR page 8 CONFIGURATION: " Internal jumpers page 9 IF A FAULT DEVELOPS page 10 CONTACTING DRAWMER page 10 TECHNICAL SPECIFICATION page 10 ii
For the USA FEDERAL COMMUNICATIONS COMMISSION RADIO FREQUENCY INTERFERENCE STATEMENT This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
TWELVE MONTHS LIMITED WARRANTY DRAWMER ELECTRONICS LTD., (HEREIN AFTER KNOWN AS THE MANUFACTURER) WARRANTS THIS AUDIO PRODUCT TO BE FREE FROM DEFECTS AND CONFORM SUBSTANTIALLY TO THE SPECIFICATIONS OF THIS MANUAL FOR A PERIOD OF TWELVE MONTHS FROM THE ORIGINAL DATE OF PURCHASE, WHEN USED IN ACCORDANCE WITH THE SPECIFICATIONS DETAILED IN THIS MANUAL. THIS WARRANTY IS NOT TRANSFERABLE. IT APPLIES ONLY TO THE ORIGINAL PURCHASER OF THE PRODUCT.
1 D62 OPERATORS’ MANUAL DRAWMER D62 Digital Module SAFETY CONSIDERATIONS CAUTION - STATIC HANDLING TO REDUCE THE RISK OF DAMAGE TO THE DIGITAL MODULE ENSURE THAT STATIC HANDLING PROCEDURES ARE OBSERVED WHEN HOLDING THE D62-TDIF MODULE. CAUTION - SERVICING DO NOT PERFORM ANY SERVICING IF YOU ARE NOT QUALIFIED. WARNING TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE.
2 D62 OPERATORS’ MANUAL INSTALLATION The D62 Digital modules are only designed for operation within a Drawmer 1962 analogue unit. Under no circumstances should the units be installed into any other manufacturers’ or custom device. Installation into the existing 1962 analogue unit is very simple, however if you have any doubts or problems, please refer to your local Drawmer dealer or a competent qualified electronic engineer.
3 D62 OPERATORS’ MANUAL DIGITAL CONNECTIONS DIGITAL CLOCK SYNCHRONISATION When clocking the D62 from an external, master clock source, there are two possible methods of termination. When using the TEAC ® TDIF-1 Digital Interface protocol, which uses a 25 pin D-sub connector system, or ADAT ® optical system, the Input Select button should be in the Out position.
4 D62 OPERATORS’ MANUAL DIGITAL DATA Three digital data output formats are supported by the D62 digital interface. AES/EBU: via an XLR connector designed to be used with standard balanced microphone cable (20 metres maximum), wired pin 1 screen, pin 2 and 3 balanced data, and the XLR shell connected to the chassis. Having many short cables joined together is not advisable as each connector can cause undesirable signal reflections.
5 D62 OPERATORS’ MANUAL 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.
6 D62 OPERATORS’ MANUAL 1962 FRONT PANEL DIGITAL CONTROLS: Sample Rate: This switch selects 48.0KHz, 44.1KHz and EXTernal clock for synchronising to other digital devices. Any external clock input is ‘cleaned’ by the D62 PLL and output at the rear panel BNC connector marked WORD SYNC Out.
7 D62 OPERATORS’ MANUAL REPLAY A, B, C, D: The four positions A, B, C and D (in yellow) are used for playback from a digital multitrack recorder to the AES/EBU and SPDIF outputs, 16bit or High resolution mode will be automatically selected. Which specific tracks are replayed are detailed at the bottom of the table on the following page. If high resolution tracks are replayed with any of the tracks missing audible distortion will be heard.
8 D62 OPERATORS’ MANUAL DITHER SELECTOR OPTIONS Position Dither and Noise Shaping 1 Positions the noise shaped dither to the very top of the audio spectrum at a level of +30dB above the quantise noise floor. The ears are very insensitive at this frequency, hence the noise is inaudible, resulting in subjectively clean signals with wide dynamic range. Adding extreme HF EQ boost at a later stage is NOT recommended. 2 The same frequency as 1 (above) with only +20dB of boost.
9 D62 OPERATORS’ MANUAL CONFIGURATION Configuration Jumpers: A simple adjustment of two internal PCB jumpers (one for each channel) enables the front panel Channel Output Level setting to be passed onto the Channel Pan control in the Stereo Mix section and therefore onwards to the Digital Section. The normal and recommended factory setting for both jumpers is for Stereo Mix Channel Pan to be pre Channel Output Level control.
10 D62 OPERATORS’ MANUAL IF A FAULT DEVELOPS For warranty service please call Drawmer Electronics Ltd. Or their nearest authorised service facility, giving full details of the difficulty. On receipt of this information, service or shipping instructions will be forwarded to you. No equipment should be returned under the warranty without prior consent from Drawmer or their authorised representative. For service claims under the warranty agreement a service Returns Authorisation (RA) number will be given.
