Studer D19m, Инструкция по эксплуатации, Страница: 34 / 100

D19m Technical Description
E20 D19m
Date printed:
30.06.20
LEDs: OVERLOAD 1...4 For each of the 4 channels an LED indicates when 0 dB
FS
level has been
reached.
16 NS+D Indication for 16-bit output with dithering, or noise shaping and dithering.
SYNC Indicates that the digital outputs are synced.
SUPPLY Indicates “ power on” status.
Jumpers: Input level 3 positions: 15 dBu (fixed), 21 dBu (fixed), or variable (0...26 dBu).
Sync AES / TTL AES: The sync input from the AES/EBU sync input is used (in case of
standalone use of the A/D card).
TTL: The sync input from the D19m rack is used. The internal TTL sync
signal is generated by the MADO card in a D19m MUX frame respectively
by the MADI card in a DEMUX frame.
2-CH / STEREO Defines the channel mode in the channel status bit.
DITHER / NS Dithering and noise shaping, or dithering only.
MASTER Card is master for activating noise shaping and dithering in a D19m frame.
EXT./INT. CONTROL External noise shaping and dithering control (front panel switch has no ef-
fect), or noise shaping and dithering activated by front panel switch.
Alignment: Set jumper to 15 or 21 dBu position. Feed an analog signal with a level of
+6 dBu or +12 dBu, respectively, to one of the analog inputs. Measure the
digital level either locally on the AES/EBU outputs or via the TDM bus on
the MADI output. Adjust the level with the corresponding FINE ADJUST
trimmer potentiometer to –9 dB
FS
. If no digital measuring equipment is
available, feed an analog signal with a level of +15 dBu or +21 dBu to the
analog input and adjust the level with the corresponding FINE ADJUST
trimmer potentiometer so that the overload LED just comes on. If an other
input sensitivity has to be adjusted, set the jumper to position VARIABLE
and use the 0...26 dBu trimmer potentiometer to adjust to the desired level.
Technical Data:
Impedance
110
Ω AES/EBU sync input
Sensitivity min. 200 mV
Impedance
110
Ω
AES/EBU outputs
Output level (into 110
Ω
)
5V
Analog Input Transformer-balanced
Level (for 0 dB
FS
) jumper-selectable +15 dBu, +21 dBu, 0...26 dBu adjustable with trimmer potentiometer
Impedance
> 10 k
Ω
Frequency response 20 Hz...20 kHz –0.2 dB
20 Hz...20 kHz, –1 dB
FS
< –97 dB
FS
THD + N (noise shaping OFF)
1 kHz, –30 dB
FS
< –108 dB
FS
Crosstalk at 1 kHz < –110 dB
FS
5V max. 0.6 A
+15V max. 0.25 A
Power consumption
–15V max. 0.06 A
with external sync 28 kHz...55 kHz Sampling frequency
internal Sync (standalone) 44.1/48 kHz
Temperature range 0°...+40 C