DCS 954 User Manual page 26

dCS 954 User Manual
dCS Ltd
I-For
Filt
BNC I
3
Nyquist images, not stereo images. These are reflections of the pass-band spectrum about Fs/2 caused by
any digital-to-analogue conversion process. They must be filtered out by the converter.
Manual part no: DOC136954 iss 2B1
Contact on + 44 1799 531 999
dCS
(inside the UK replace + 44 with 0)
(Input Format). Sets the AES input multi-wire format Input Format. There are 4
options:
Auto
US[1]
US[2]
US[4]
You can over-ride any setting using the
In Dual or Quad AES modes, the unit will warn you of missing wires with a
display like 1-34 (AES2
display like 1243 (AES3
messaging and may not work with non-dCS equipment.
(Filter). Selects one of several anti-image
be evaluated by ear.
sampling frequency.
progressively more relaxed responses, slightly degrading the Nyquist image
performance but sharpening the impulse response. This affects the stereo or
multi-channel image. Different filters may be appropriate for different material.
A typical audio signal contains very little signal energy above 10kHz, so there is
some justification for relaxing the filter attenuation as 20kHz is approached.
DSD mode also has four filters. Metering DSD is difficult because the high level
of ultrasonic noise can cause spurious meter readings. DSD
designed for metering the 0 – 20kHz band and may not give the best sonic
performance.
(BNC Inputs). In PCM mode, this sets the format of the BNC In connectors.
SDIF
AES
Select these inputs using the
If the unit is already locked to SDIF or DSD, the
Manual for Standard Software Version 1.5x
-
The message flags on the selected input are
checked and the format is automatically set to
Single, Dual or Quad AES. Dual AES must be
connected to AES 1 &
User-selected Single AES mode.
User-selected Dual AES mode.
User selected Quad AES mode.
AES1
not connected for Quad AES). Swapped wires causes a
& 4 swapped). The checking relies on correct
-
3
Filt1
gives the sharpest cut off, just below half the
This is the normal setting. Filt2, Filt3,
-
Configures Ch1, Ch2 and Clk In as an SDIF-2
interface.
Configures Clk In to accept AES3 encoded data at
TTL levels at up to 96kS/s.
BNC button.
Page 26
2 or AES 3 & 4.
– AES4 buttons.
filter responses. The filters should
Filt4
AES
option is disabled.
file 135954ma2b1.pdf available from website
email to: more@dcsltd.co.uk
web site: www.dcsltd.co.uk
June 2000
Filt4
give
is specially