Instruction manual, Microphone preamplifier, Using the digital module – Aphex 1788A Premium Eight Chan Mic Pre User Manual

Page 26: Parallel remote clocking, Page 26, Page 27, 1 2 3 4 on < < p, 1 2 3 4 on

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Page 26

MICROPHONE PREAMPLIFIER

Page 27

Instruction Manual

5. USING THE DIGITAL MODULE

Variations

As you can see, clocking is usually pretty simple. Sometimes, especially with the use of
many channels and multiple 1788A’s, you may need to work out an optimal clocking
scheme depending upon what equipment is involved outside the 1788A’s. You might, for
example, need to fan out from a parallel clock D.A. to several racks of 1788A’s which are
locally series-looped. With long distance clock runs, you should use impedance matched
transmission to minimize jitter problems.

Refer to Appendix F for information about word clock distribution methods and
cabling.

< < P

MODEL 1788A - 8 Channel Mic Pre

Aphex Systems Sun Valley, CA

MIDI

IN

OUT

THRU

90-260 V~50/60Hz 60 WATTS

RS-232

WORD

CLOCK

OPTICAL

AUX

OUTPUT

CH 8

MIC IN

LINE OUT

CH 7

MIC IN

LINE OUT

CH 6

MIC IN

LINE OUT

CH 5

MIC IN

LINE OUT

CH 4

MIC IN

LINE OUT

CH 3

MIC IN

LINE OUT

CH 2

MIC IN

LINE OUT

CH 1

MIC IN

LINE OUT

AES/EBU OUTPUT

LAN

TDIF

ADAT

IN

OUT

UTIL

1 2 3 4

ON

< < P

MODEL 1788A - 8 Channel Mic Pre

Aphex Systems Sun Valley, CA

MIDI

IN

OUT

THRU

90-260 V~50/60Hz 60 WATTS

RS-232

WORD

CLOCK

OPTICAL

AUX

OUTPUT

CH 8

MIC IN

LINE OUT

CH 7

MIC IN

LINE OUT

CH 6

MIC IN

LINE OUT

CH 5

MIC IN

LINE OUT

CH 4

MIC IN

LINE OUT

CH 3

MIC IN

LINE OUT

CH 2

MIC IN

LINE OUT

CH 1

MIC IN

LINE OUT

AES/EBU OUTPUT

LAN

TDIF

ADAT

IN

OUT

UTIL

1 2 3 4

ON

< < P

MODEL 1788A - 8 Channel Mic Pre

Aphex Systems Sun Valley, CA

MIDI

IN

OUT

THRU

90-260 V~50/60Hz 60 WATTS

RS-232

WORD

CLOCK

OPTICAL

AUX

OUTPUT

CH 8

MIC IN

LINE OUT

CH 7

MIC IN

LINE OUT

CH 6

MIC IN

LINE OUT

CH 5

MIC IN

LINE OUT

CH 4

MIC IN

LINE OUT

CH 3

MIC IN

LINE OUT

CH 2

MIC IN

LINE OUT

CH 1

MIC IN

LINE OUT

AES/EBU OUTPUT

LAN

TDIF

ADAT

IN

OUT

UTIL

1 2 3 4

ON

< < P

MODEL 1788A - 8 Channel Mic Pre

Aphex Systems Sun Valley, CA

MIDI

IN

OUT

THRU

90-260 V~50/60Hz 60 WATTS

RS-232

WORD

CLOCK

OPTICAL

AUX

OUTPUT

CH 8

MIC IN

LINE OUT

CH 7

MIC IN

LINE OUT

CH 6

MIC IN

LINE OUT

CH 5

MIC IN

LINE OUT

CH 4

MIC IN

LINE OUT

CH 3

MIC IN

LINE OUT

CH 2

MIC IN

LINE OUT

CH 1

MIC IN

LINE OUT

AES/EBU OUTPUT

LAN

TDIF

ADAT

IN

OUT

UTIL

1 2 3 4

ON

< < P

MODEL 1788A - 8 Channel Mic Pre

Aphex Systems Sun Valley, CA

MIDI

IN

OUT

THRU

90-260 V~50/60Hz 60 WATTS

RS-232

WORD

CLOCK

OPTICAL

AUX

OUTPUT

CH 8

MIC IN

LINE OUT

CH 7

MIC IN

LINE OUT

CH 6

MIC IN

LINE OUT

CH 5

MIC IN

LINE OUT

CH 4

MIC IN

LINE OUT

CH 3

MIC IN

LINE OUT

CH 2

MIC IN

LINE OUT

CH 1

MIC IN

LINE OUT

AES/EBU OUTPUT

LAN

TDIF

ADAT

IN

OUT

UTIL

1 2 3 4

ON

To Additional 1788A’s

or Other Gear

From Clock Source

Clock D.A.

If Impedance Matched, Use Terminations

Parallel Remote Clocking

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