FCD-IPMInstallation and Operation Manual

Appendix A Interface Specifications and Cable Diagrams

 

 

A.5 ISDN Connector

The ISDN connector pinout is provided in Table A-4.

Table A-4. ISDN “S” Interface Pin Assignments

Pin Number

Signal Name

 

 

3

Tx+

 

 

4

Rx+

 

 

5

Rx-

 

 

6

Tx-

 

 

A.6 Fiber Optic Interface

FCD-IPM equipped with a fiber optic main link can be used to provide a secure link in hazardous or hostile environments, increase the maximum connection range, and achieve immunity against electrical interference and protection against the deleterious effects of ground loops.

The fiber optic main link interface is terminated in two ST, FC/PC or SC connectors, in accordance with order. Table A-5lists the various available fiber optic interface types and their main specifications (Maximum ranges are calculated assuming a 3 dB margin).

Table A-5. Fiber Optic Interface Specifications

Wavelength [nm],

Budget

Typical Range

Connector

Fiber Type [∝m]

[dB]

[km/miles]

 

 

 

 

 

 

 

850, 62.5/125, multimode

12

3.5/2.1

SC, ST, FC

 

 

 

 

1310, 9/125, single mode

15

33/20.5

SC, ST, FC

 

 

 

 

1310L, 9/125, single mode

25

50/31

SC, ST, FC

 

 

 

 

1550L, 9/125, single mode

25

100/62

SC, ST, FC

 

 

 

 

All the fiber optic interface options offer high performance and have a wide dynamic range. This ensures that the receiver will not saturate even when using short fiber optic cables (saturation is caused when the optical power applied to the receiver exceeds its maximum allowed input power, and results in very high bit error rates).

Fiber Optic Interface

A-7

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RAD Data comm Modular Access Device with Integrated Router, E1/T1 operation manual Isdn Connector, Fiber Optic Interface
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