ADVANCED FUNCTIONS
The AMS8100?s Advanced Functions are recommended only for those who are technically knowledgeable and familiar
with audio electronics.
The logic functions of the AMS8100 expand the mixer?s
range of installation and control options. Logic can be used for
everythingfromsimplecoughswitchestoelaboratecomputer-GATE1GATE3GATE5GATE7LOGIC
GROUND
MUTE1MUTE3MUTE5MUTE7
controlled room systems. (Shure?s AMSUpdate publication
O?RIDE2O?RIDE4O?RIDE6O?RIDE8
contains additional applications of advanced logic. This publi-
cationisavailablebycontactingShure?sApplicationsGroupat
847--866--2525.)Thefollowinglogicfunctionsareavailablefor
each channel:
GATE OUT: Follows channel gating and goes to logic
?low? (sinks current) when microphone is gated on. 500 mA of
current sinking ability is provided (see illustration A, below).
MUTE2MUTE4MUTE6MUTE8
GATE2GATE4GATE6GATE8
O?RIDE1O?RIDE3O?RIDE5O?RIDE7
+5 V+5 V
LOGIC CONNECTOR
10K55K
MUTE INLOGIC CONNECTIONS
TO
GATEAMS8100OR
OUTCIRCUITOVERRIDELogic FunctionInputConnector Pin No.
IN
Channel
FROM
AMS8100GATE OUT111
CIRCUIT
GATE OUT 2215
LOGICGATE OUT 334
GROUNDGATE OUT 4418
GATE OUT 557
ABGATE OUT 6621
GATE OUT 7710
LOGIC EQUIVALENT CIRCUIT DIAGRAMS
GATE OUT 8824
OVERRIDE IN 1114
MUTE IN: Applying logic ?low? (from GATE OUT or aOVERRIDE IN 223
switch closure to logic ground) gates channel off (see FigureOVERRIDE IN 3317
9B). Channel output drops to -, regardless of Off AttenuationOVERRIDE IN 446
setting.OVERRIDE IN 5520
OVERRIDE IN 669
OVERRIDEIN: Applying logic ?low? (from GATEOUT or a
OVERRIDE IN 7723
switch closure to logic ground) forces channel on (see illustra-
OVERRIDE IN 8812
tion B, above). Factory setting provides that when both Mute
MUTE IN 112
andOverrideareactivated,Mutetakesprecedence(seeInter-
MUTE IN 2216
nalModificationsfor Override precedence).
MUTE IN 335
LOGIC GROUND: Logic ground is distinct from theMUTE IN 4419
AMS8100 audio ground. Make all logic ground connections toMUTE IN 558
thispin,includingpowersupplygroundofexternallogiccircuit-MUTE IN 6622
ry.To avoidswitching clicks,donotconnect logicground toau-MUTE IN 7711
dio, chassis or rack grounds.MUTE IN 8825
Logic controls are accessed at the DB-25 multi-pin con-Logic Groundall13
nector on the rear panel (see illustration LOGIC CON-
NECTOR). The pin connections are given in the following
table.
Eng h --17lis |
ACEC
