CHANNEL INTERFACE MODULE (CIM)

8.2.4 EXTERNAL CONNECTIONS

When connecting the CIM to a RIM or Multi-Net Logic Drawer, cross connect the Tx lines with the Rx lines. Connect the Secondary Tx and Rx lines with the Drawers Tx and Rx Data lines.

Table 8-4 CIM EXTERNAL CONNECTIONSRIM to CIM CONNECTIONS
Label

 

TB701TB702CIM/

 

Label

 

P1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RxDA+

 

pin 1

 

-pin 59

 

TxS+

RxDA-

 

 

pin 1

-pin 60

 

TxS-

TxDA+

 

pin 2

 

-pin 27

 

RxS+

TxDA-

 

 

pin 2

-pin 28

 

RxS-

RxA+

 

pin 3

 

-pin 63

 

RxA+

RxA-

 

 

pin 3

-pin 64

 

TxA-

TxA+

 

pin 4

 

-pin 31

 

RxA+

TxA-

 

 

pin 4

-pin 32

 

RxA-

 

 

 

 

 

 

 

 

 

MLM to CIM CONNECTIONS

 

 

 

 

 

 

 

 

Label

 

TB 1

CIM/

Label

 

 

 

P1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GND

 

1

NC

RxA+

 

 

STA1

 

2

-pin 31

 

 

STA2

 

3

-pin 32

RxA-

 

 

SRA1

 

4

-pin 63

TxA+

 

 

SRA2

 

5

-pin 64

TxA-

 

 

SRD1

 

6

-pin 59

TxS+

 

 

SRD2

 

7

-pin 60

TxS-

 

 

STD1

 

8

-pin 27

RxS+

 

 

STD2

 

9

-pin 28

RxS-

 

 

 

 

 

 

 

 

 

8.3 CIM ALIGNMENT SPECIFICATIONS

8.3.1 PRE-ALIGNMENT

The CIM is pre-aligned with the Basic Board Module alignment procedures, Refer to Section 7.3.

8.3.2 CIM ALIGNMENT PROCEDURE

Connections to the CIM may take several forms as follows:

1.Direct Connection

2.Leased Lines

3.Microwave Link

4.T1 Channel Bank Interfaces

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

Main Transmit

1.Determine the maximum level to be received by the ancillary equipment to be transmitted.

2.Select Test 1 (S5, open section 1, close sections 2, 3 and 4).

3.Reset the module, Press S2 and release.

4.Adjust R44 for -12 dB from the maximum level in Step 1 at J12.

5.Select for normal operation (S5 all sections closed).

6.Reset the module, Press S2 and release.

Example: Microwave has -16 dBm max input, Set J12 for -28 dBm.

Main Receive

1.Determine the maximum transmit level that is sent by the ancillary equipment to the interface module.

2.Select Test 1 (S5, open section 1, close sections 2, 3 and 4).

3.Reset the module, Press S2 and release.

4.Insert an alignment tone -12 dB from the level deter- mined in Step 1 using a 600-ohm audio oscillator into EQU port of J1. Otherwise, set the ancillary equipment to send the alignment tone to the inter- face module.

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