Shure AMS8100 Betriebsanweisung PDF herunterladen (Seite 11)

ADVANCED FUNCTIONS

CAUTION: Use of Advanced Functions is recommended only for qualified audio technicians.

LOGIC CONNECTION SPECIFICATIONS

The SCM410 logic functions expand the range of installation

and control options. Logic can be used for everything from sim-

ple cough switches to elaborate computer-controlled room

systems. (Shure’s

AMS Update

publication contains addition-

al applications of advanced logic. This publication is available

by contacting the Shure Applications Department.) The follow-

ing logic functions are available for each channel:

GATE OUT: Follows channel gating and goes to logic “low”

(sinks current) when microphone is gated on. 500 mA of cur-

rent sinking ability is provided (see Figure 18A).

MUTE IN: Applying logic “low” (from GATE OUT or a switch

closure to logic ground) gates channel off (see Figure 18B).

Channel output drops to -∞.

GATE

OUT

LOGIC

GROUND

MUTE IN

OVERRIDE

55K

10K

+5 V

SCM410

CIRCUIT

FROM

SCM410

CIRCUIT

LOGIC EQUIVALENT CIRCUIT DIAGRAM

FIGURE 18

OVERRIDE IN: Applying logic “low” (from GATE OUT or a switch

closure to logic ground) forces channel on (see Figure 18B).

When both Mute and Override are activated, Mute takes prece-

dence (see

Internal Modifications

for Override precedence).

LOGIC GROUND: Logic ground is distinct from audio ground.

Make all logic ground connections to this pin, including power

supply ground of external logic circuitry. To avoid switching clicks,

do not

connect logic ground to audio, chassis or rack grounds.

Logic controls are accessed through the high density DB-15

multi-pin connector on the rear panel (Figure 19). Pin connec-

tions are shown in the following table.

LOGIC CONNECTOR

FIGURE 19

LOGIC CONNECTIONS

No.

Logic

Function

Logic

Function

No.

1 OVERRIDE IN 1

GATE OUT 1 6

2 OVERRIDE IN 2 GATE OUT 2 7

3 OVERRIDE IN 3 GATE OUT 3 8

4 GATE OUT 4 GATE OUT 4 4

5 LOGIC GROUND OVERRIDE IN 1 1

6 GATE OUT 1 OVERRIDE IN 2 2

7 GATE OUT 2 OVERRIDE IN 3 3

8 GATE OUT 3 OVERRIDE IN 4 14

9 NO CONNECTION MUTE IN 1 11

10 MUTE IN 4 MUTE IN 2 12

11 MUTE IN 1 MUTE IN 3 13

12 MUTE IN 2 MUTE IN 4 10

13 MUTE IN 3 LOGIC GROUND 5

14 OVERRIDE IN 4 NO CONNECTION 15

15 NO CONNECTION NO CONNECTION 9

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 17 18

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