WIDE AREA MODULE (WAM)

19.2 WAM SETUP PROCEDURE

19.2.1 WAM SWITCH SETTINGS

See Figure 19-2for Alignment Points Diagram.

Table 19-1 WAM SWITCH SETTINGS

Switch

Open Sections

 

Close Sections

 

 

 

 

 

 

 

 

 

 

S1

1

2

-

4

-

-

3

-

S3

1

2

3

4

-

-

-

-

S4

1

2

3

4

-

-

-

-

S5

-

-

-

-

1

2

3

4

19.2.2 WAM JUMPER PLACEMENT

Table 19-2 WAM JUMPER PLACEMENT

JU

Pin

Description

 

 

 

J24

1 to 2

Selects 27512 EPROM operation

 

2 to 3*

Selects 27256 EPROM operation

J27

1 to 2

Not used

 

2 to 3*

Normal operation

P33

1 to 2

Jumpered

 

3 to 4

Jumpered

 

5 and 6

open

J36

1 only

Not used

 

1 to 2

-48V E-lead operation

 

2 to 3

-15V E-lead operation

J14

Jumper pin 1 to 2 for high impedance ground path

J15

for split 600 ohm inputs and outputs. Leave open if

J21

no ground path desired.

J22

 

 

* Indicates normal operation.

19.2.3WAM BACKPLANE EXTERNAL CONTACTS

See the Backplane Section 23 for pinouts on the shelf backplane and wire harness pinouts.

NOTE: An ECO to the WAM allows for an additional M-Lead output pair to the Backplane on TxS+ and TxS- (P34 to P45, pins 59/60).

Table 19-3 WAM EXTERNAL CONNECTIONS

Backplane

Description

Wire Harness

P34 to P45

J1,3,5,7

 

 

 

 

 

pin 27

Sec Rx +

pin 1

RxS+

pin 28

Sec Rx -

pin 2

RxS-

pin 29

EA lead

pin 3

EA

pin 30

EB lead

pin 4

EB

pin 31

Pri Rx Audio+

pin 5

RxA+

pin 32

Pri Rx Audio-

pin 6

RxA-

 

 

J2,4,6,8

 

 

 

 

pin 59

Sec Tx +

TxS+ (MA2)

pin 1

pin 60

Sec Tx -

TxS- (MB2)

pin 2

pin 61

MA lead

MA (MA1)

pin 3

pin 62

MB lead

MB (MB1)

pin 4

pin 63

Pri Tx Audio+

TxA+

pin 5

pin 64

Pri Tx Audio-

TxA-

pin 6

19.3 WAM ALIGNMENT SPECIFICATIONS

19.3.1 PRE-ALIGNMENT

The WAM is pre-aligned with the Basic Board Module alignment procedures; refer to Section 7.3.

19.3.2 WAM ALIGNMENT PROCEDURE

There are several external connections for the WAM, and good alignment practice should be followed and the module should be adjusted accord- ingly.

Connections to the WAM may take several forms:

Direct Connection

Leased Lines

Microwave Link

T1 Channel Bank Interfaces

This ancillary equipment requires certain input and output levels for proper operation. The module should be adjusted accordingly.

19-2