
WIDE AREA MODULE (WAM)
19.2.1 WAM SWITCH SETTINGS
See Figure
Switch | Open Sections |
| Close Sections |
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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
TableJU | Pin | Description |
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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 | |
| 2 to 3 | |
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 |
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* 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
Backplane | Description | Wire Harness | ||
P34 to P45 | J1,3,5,7 | |||
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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- | |
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| J2,4,6,8 | ||
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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 |
19.3.1
The WAM is
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.