Instruction manual, Microphone preamplifier, Typical operation – Aphex 1788A Premium Eight Chan Mic Pre User Manual

Page 28

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Page 28

MICROPHONE PREAMPLIFIER

Page 29

Instruction Manual

6. TYPICAL OPERATION

5.2 SENDING DIGITAL AUDIO

The digital module provides three simultaneous 8-channel outputs:

1. Four AES/EBU 110 ohm pairs on a 15-pin D-Sub
2. ADAT® Optical on a TOSLINK Jack
3. Tascam TDIF® on a 25-pin D-Sub

Connect your digital audio receivers to any or all of these outputs. You need to take into
account the clocking requirements of all outboard equipment. In some special cases this
may prevent you from usinng all the outputs at once.

AES/EBU Output

Four 2-channel standard professional AES/EBU outputs are provided. The pinout of the
15-pin D-Sub is according to our own standard. The chart below shoes the wiring pinout
so you can make suitable breakout adapters.

TDIF® Jack

The pinout is standardized by Tascam. We have reproduced their wiring diagram for you
for reference only. We highly recommend that you obtain commercially available cables.

ADAT® Optical

This runs on a plastic optical fiber that can transmit over a limited distance of typically 10
meters maximum. It is most suitable when the ADAT device is located in or next to the
same rack as the 1788A.

1

9 10 11 12 13 14 15

2 3 4 5 6 7 8

8

15 14 13 12 11 10 9

7 6 5 4 3 2 1

Female

Male

CH1&2

CH3&4

CH5&6

CH7&8

(+)

1

3

5

7

(-)

2

4

6

8

GND

9 - 15

25 24 23 22 21 20 19 18 17 16 15 14

13 12 11 10 9 8 7 6 5 4 3 2 1

DIN 1&2 * DGND

DGND

DGND

DGND

EMPH IN *

FS0 IN *

FS1 OUT

EMPH OUT

DGND

DIN1&2

DGND

DGND

DIN 3&4 *

DIN 5&6 *

DIN 7&8 *

LRCK IN *

FS1 IN *

DGND

FS0 OUT

LRCK OUT

DOUT 7&8

DOUT 5&6

DOUT 3&4

DOUT 1&2

* PINS NOT CONNECTED IN THE 1788A

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