dCS 954 User Manual

Manual for Standard Software Version 1.5x

dCS Ltd

June 2000

The output is monophonic

•If the unit is locked to one wire of Dual AES or Quad AES, the left channel signal will appear on both channels. Select the correct inputs.

•The source may actually be monophonic.

•Check that the signal is not mono’ed elsewhere in the system.

Clicks or crackles occur on the outputs

•Check that all cables are of a suitable type, connected correctly and not damaged. In any multi-wire mode, a broken wire may not prevent the unit locking but will corrupt the data.

•Press the Coarse Lock button. If this solves the problem, the source equipment is likely to have a high level of jitter.

•This can be caused by slaving some, but not all, of the system components to a Master Clock. Note that if the unit is being driven by an upsampler, it must be slaved to the upsampler, NOT to a Master Clock.

•If you are using 4-wire DSD, check that the 4 cables are connected correctly.

The Display turns on briefly when a button is pressed, then turns off

•Set the 7-Segmenu item to On.

The unit fails to slave to a Master Clock

•If you are using an AES Reference, connect this to Reference In and set the Ref In menu item to Loop or Loop.t as appropriate. When locked, the unit should display “r” followed by the sample rate.

•If you are using Word Clock, connect this to Word Clock In. Set the BNC I menu item to SDIF and the BNC item to RefCl. Press the BNC button – the unit should lock and display “b” followed by the sample rate.

•Check that the AES Reference In or Word Clock In cable is connected correctly and not damaged.

•Check that the Master Clock is switched on, set to the right sample rate and does not require re-calibration.

•Connect a different piece of digital equipment to test the locking capability of the unit. If the condition persists, contact your Distributor or dCS.

The unit slaves to Word Clock but not AES Reference

•This can be caused by erroneous system messages. Contact your Distributor or dCS for advice.

The sound has a peculiar tonal balance

•If the sample rate is 48kS/s or lower the De-Emphasis setting may be incorrect. Press the De-Emphasisbutton repeatedly until the mode display shows A (Auto).

•If this fails to correct the problem, the De-Emphasis flags in the data stream may be incorrectly set (this is rare but it does happen. Press the De-Emphasisbutton to cycle through 5, C and - in turn until the correct setting is found. When you change to a different disk or tape, we recommend setting De-Emphasis to Auto again.

Manual part no: DOC136954 iss 2B1

Page 79

file 135954ma2b1.pdf available from website

Contact dCS on + 44 1799 531 999

email to: more@dcsltd.co.uk

(inside the UK replace + 44 with 0)

web site: www.dcsltd.co.uk