Drawmer DC2496 High Resolution A/D Converter - Manual (Page 14)

14
OPERATION
COMMENTS
INPUT
SIGNAL
OPERATION
FRONT PANEL
LIMITER WORD
RESOLUTION
DITHER SAMPLE
RATE
EXTENDED
WORK CLOCK
REPLAY
TRACK
MODE DIGITAL
GAIN
EXT > SPDIF
AES
TDIF
A/D
ADAT
HOLD
FAST
MED
OFF
SLOW
16 BIT
18 BIT
20 BIT
24 BIT
22 BIT
OFF
WHITE
DUAL
H.F.
M.F.
44.1K
48K
96K
88.2K
7,8
5,6
1,2
3,4 PLAY
RECO RD
0 +18
+6
+3
+9
+12
+15
AES/SPDIF
BNC
TDIF
ADAT
EXT > SPDIF
AES
TDIF
A/D
ADAT
HOLD
FAST
MED
OFF
SLOW
16 BIT
18 BIT
20 BIT
24 BIT
22 BIT
OFF
WHITE
DUAL
H.F.
M.F.
44.1K
48K
96K
88.2K
7,8
5,6
1,2
3,4 PLAY
RECO RD
0 +18
+6
+3
+9
+12
+15
AES/SPDIF
BNC
TDIF
ADAT
EXT > SPDIF
AES
TDIF
A/D
ADAT
HOLD
FAST
MED
OFF
SLOW
16 BIT
18 BIT
20 BIT
24 BIT
22 BIT
OFF
WHITE
DUAL
H.F.
M.F.
44.1K
48K
96K
88.2K
7,8
5,6
1,2
3,4 PLAY
RECO RD
0 +18
+6
+3
+9
+12
+15
AES/SPDIF
BNC
TDIF
ADAT
EXT > SPDIF
AES
TDIF
A/D
ADAT
HOLD
FAST
MED
OFF
SLOW
16 BIT
18 BIT
20 BIT
24 BIT
22 BIT
OFF
WHITE
DUAL
H.F.
M.F.
44.1K
48K
96K
88.2K
7,8
5,6
1,2
3,4 PLAY
RECO RD
0 +18
+6
+3
+9
+12
+15
AES/SPDIF
BNC
TDIF
ADAT
48K 24Bit Recording and Replay
48K 24 Bit A/D Input Recording
Record a stereo signal on triple (3) tracks either as
tracks 1,2,3 or 4,5,6 or both on an ADAT or Tascam 16/
20Bit digital multi-track tape recorder - and 7,8 stereo
pair as a backup if required.
ADAT machines must be set to EXT Clock.
Tascam machines must be set to WORD clock, and a
BNC lead from DC2496 main word clock to Tascam
Word Clock in.
XLR balanced
inputs.
Use as
required
24 bit
bit splitting mode
to record
6 tracks
High Frequency
Noise shaped
dither
48K internal
sample rate
none none SELECT THIS
RECORD
LED FIRST
0 dB
If gain is applied
limiter
must be used
48K 24 Bit A/D Input
Replay from ADAT
Replay triple (3) tracks 1,2,3 or 4,5,6,
or tracks 7,8 stereo pair.
ADAT must be set to INT Clock.
There will be a short burst of white noise at 0dB if a
replay track changes from normal 16/20 Bit mode to
High-Res mode whilst replaying.
Light Pipe ADAT
optical in
Use as
required
24 bit
stereo mode
High Frequency
Noise shaped
dither
96K or 88.2K lit
whenhex
trackrecording is
replayed
ADAT external
optical input word
clock
Lit when hex track
recording is
replayed
SELECT THIS
PLAY
LED FIRST
6 dB
of gain with limit
use as required
48K 24 Bit A/D Input Replay
from TDIF i.e. DA-88
48K 24Bit A/D conversion with monitor speakers recording and replaying, 8 Track
digital tape recorders, DAT and 24Bit 48K hard disk recorder, also recording 44.1K 16 Bit to
Mini-disc, all simultaneously.
Ensure that the A/D input signal does not light
the overload leds - analogue clipping will occur.
Reduce the mixer output level as required. Apply
DC2496 digital gain with limiter to allow more A/
D input headroom whilst preserving 0dBFS
digital level.
If the peak noise level from the mixing desk is
above -100dB then the bottom leds of the meter
will remain lit.
If the mixer has a -10dBu output level then the
analogue input switch should be pressed (+4dBu
max input signal level).
To ensure a 0dBFS digital signal level add a few
dB’s of digital gain and set the limiter to fast.
If digital gain is applied with the limiter off then
unpleasant digital distortion can occur on peaks.
When recording triple (3) tracks, tracks 7 and 8
will only monitor at 16Bit resolution from the
Sample Rate Converter (upper) digital outputs.
When the TDIF plug is inserted into the rear of
the DC2496 the main digital output word clock
BNC is only suitable for TDIF word sync input.
When monitoring using the Slave Digital Output
white noise bursts at 0dB may be heard when
changing sample rate.
Always reduce monitor volume when selecting
different word clocks or sample rates.
1)
2)
3)
4)
5)
6)
7)
8)
9)
TDIF digital
input fron
25 pin D plug
Use as
required
24 bit
stereo mode
High Frequency
Noise shaped
dither
96K or 88.2K lit
whenhex
trackrecording is
replayed
TDIF external
25 pin D plug
word clock
Lit when hex track
recording is
replayed
SELECT THIS
PLAY
LED FIRST
6 dB
of gain with limit
use as required
AES (XLR)
digital input
Use as
required
24 bit
stereo mode
High Frequency
Noise shaped
dither
96K or 88.2K lit
depending on
replay sample
rate
AES (XLR)
word clock Not
Active
SELECT THIS
PLAY
LED FIRST
6 dB
of gain with limit
use as required
Replay triple (3) tracks 1,2,3 or 4,5,6,
or tracks 7,8 stereo pair.
Tascam must be set to INT Clock.
There will be a short burst of white noise at 0dB if a
replay track changes from normal 16/20 Bit mode to
High-Res mode whilst replaying.
48K 24 Bit Replay from Hard Disk
recorder or other AES Digital Input
Monitor on D/A whilst recording to mini-disc,
ADAT and TDIF similtaneously
(All recording devices must use
external word clock)
+D=FJAH 3 OPERATION