WIDE AREA MODULE (WAM)

 

M-LEAD

 

LINK

LINK

WAM/SWITCH 2

WAM/SWITCH 1

SPLITTER BOX

 

EQUIPMENT

EQUIPMENT

 

TXS+ (MA2)

MA IN

MA/OUT

 

EA

EA

TXS+ (MA2)

TXS- (MB2)

MB IN

MB/OUT

 

EB

EB

TXS- (MB2)

MA

 

MA2/OUT

M-LEAD

 

 

MA

 

 

 

 

MB

 

MB2/OUT

SPLITTER BOX

 

 

MB

EA

 

 

MA/OUT

 

MA

EA

EB

 

 

MB/OUT

 

MB

EB

 

 

 

MA2/OUT MA IN

MA

LOCATION 2

 

 

 

 

 

 

 

 

MB2/OUT MB IN

MB

 

 

 

 

 

 

LINK

LINK

WAM/SWITCH 3

 

 

 

 

EQUIPMENT

 

 

 

 

EQUIPMENT

 

 

 

 

 

 

 

 

 

 

EA

EA

TXS+ (MA2)

 

 

 

 

 

 

 

 

 

 

EB

EB

TXS- (MB2)

 

 

 

 

 

 

 

 

 

M-LEAD

 

 

 

 

 

 

SPLITTER BOX

 

 

MA

 

 

 

 

 

 

 

 

 

MA/OUT

 

 

MB

 

 

 

 

 

 

 

 

 

MB/OUT

 

MA

EA

 

 

 

 

MA

 

 

 

MA2/OUT MA IN

MB

EB

 

 

 

 

MB

 

LOCATION 1 (CENTRAL)

MB2/OUT MB IN

 

 

LOCATION 3

Figure 19-6 WAM E&M LEAD CABLE LAYOUT 3 LOCATIONS
19.6 WAM AUDIO CONNECTIONS

The audio of the WAMs are cross coupled to the other WAMs and back to themselves if circuitry permits. Connections to external circuits may require summing and distribution amps, depending upon the external interface.

When all Switches are co-located approximately 6 to 8 WAMs may be connected as shown in Figure 19-7.

 

WAM 1

 

WAM 2

WAM ...

WAM 8

 

 

TXA+

 

 

 

TXA+

 

 

TXA+

 

 

TXA+

 

 

 

 

 

 

 

 

 

 

 

TXA-

 

 

 

TXA-

 

 

TXA-

 

 

TXA-

 

 

 

 

 

 

 

 

 

 

 

RXA+

 

 

 

RXA+

 

RXA+

 

RXA+

 

 

 

 

 

 

 

 

 

RXA-

 

 

 

RXA-

 

RXA-

 

RXA-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 19-7 WAM AUDIO CABLE LAYOUTONE LOCATION

A single WAM connected to a single external interface is shown in Figure 19-8.This may be accomplished by direct wiring. Care must be taken on alignment and loading of the external interface not to exceed line build out parameters or line levels. If this cannot be prevented then an external summation and distribution amplifier is required to avoid audio issues (see Figure 19-9).

REMOTE LOCATION

HOST LOCATION

WAM

MW

MW

WAM

TXA+

TXA+

TXA+

TXA+

TXA-

TXA-

TXA-

TXA-

RXA+

RXA+

RXA+

RXA+

RXA-

RXA-

RXA-

RXA-

Figure 19-8 WAM AUDIO CABLE LAYOUTTWO LOCATIONS

19-6