Studer D19m, Инструкция по эксплуатации, Страница: 37 / 100

D19m Technical Description
Date printed:
30.06.20
D19m E23
LEDs: SYNC EXT Indication if the card is synced from the AES/EBU input or from the TTL
sync clock.
SYNC AES1 is ON when the external sync fails, and the sync of the AES1 input is used
to synchronize the card.
SYNC AES2 is ON when the external sync fails, and the sync of the AES2 input is used
to synchronize the card (if no signal is connected to AES1).
SUPPLY Indicates “ power on” status.
Jumpers: Output level 15 dBu fixed, 21 dBu fixed, or 0...26 dBu variable.
SYNC AES / TTL AES: The unit will be synced from the AES/EBU input (in case of standa-
lone use of the D/A 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 or by the
MADI card in a DEMUX frame.
48 k / 96 k For correct 96 kHz operation, the “ 96 k” jumper must be set for standalone
application.
COMMON / SINGLE When setting the jumper to “ common” , a common switchover for several
cards is allowed by pulling pin 18C on the backplane to GND;
in such a
case, the 48/96 k jumper must be set to the 48 k position.
Alignment: Feed a digital audio signal with a level of –10 dB
FS
either via one of the
AES/EBU inputs or via the TDM bus to the C4DA/24/96 card. Set the
jumpers to either 15 or 21 dBu and measure the corresponding analog out-
puts. Use the corresponding FINE ADJUST trimmer potentiometers to set
the output to +5 or +11 dBu, respectively. If a different output level is re-
quired, set the jumper to position VARIABLE and use the 0...26 dBu trim-
mer potentiometers to adjust the desired level.
Repeat this alignment for the second AES/EBU input.
Technical data (sampling frequency 48 kHz, output level 15 dBu @0 dB
FS
):
Impedance
110
Ω AES/EBU inputs
Sensitivity min. 200 mV
Analog output Electronically balanced
Frequency response 20 Hz...20 kHz –0.2 dB
20 Hz...20 kHz, –1 dB
FS
< –87 dB
FS
THD + N
1 kHz, –30 dB
FS
< –110 dB
FS
Crosstalk @ 1 kHz < –110 dB
FS
Output impedance (analog output)
< 40
Ω
Minimum load at maximum level +24 dBu
300
Ω
Analog output level for 0 dB
FS
, jumper-selectable +15 dBu, +21 dBu; 0...26 dBu (adjustable
with on-board trimmer potentiometer)
5 V max. 0.2 A
+15 V max. 0.25 A
Power consumption
–15 V max. 0.15 A
Sampling frequency 30 kHz...54 kHz, or 60 kHz...108 kHz
Operating temperature range 0...+40° C