RAD Data comm FOM-T3 Dokumentacja Pobierz pdf (Strona 29)

Installation and Operation Manual Chapter 2 Installation and Setup

FOM-E3, FOM-T3 Ver. 1.0 Installation and Setup 2-5

Table 2-3. Selecting the T3 Interface Cable

T3 Cable Length Jumper Positions (factory setting in bold)

JP1 JP2 JP3

0 ft – 225 ft Pins 2, 3 Pins 1, 2 Pins 2, 3

225 ft – 300 ft Pins 1, 2 Pins 1, 2 Pins 1, 2

More than 300 ft Pins 1, 2 Pins 2, 3 Pins 1, 2

Note: The maximum cable length complies with ITU-T G.703.

Closing the Case

After making the internal settings, close the FOM-E3 and FOM-T3 case.

 To close the FOM-E3 or FOM-T3 case:

1. Slide the PCB interior back into the case.

2. Screw in the two rear panel screws to fasten the main board in the case.

Connecting the Interfaces

Figure 2-4

shows a typical rear panel of a standard FOM-E3 unit and identifies

connector locations for the AC version.

ELECTRICAL OPTICAL

IN TXOUT RX

ALARMS

Figure 2-4. FOM-E3 Rear Panel

Connecting the E3/T3 Interface

The E3/T3 interface terminates in two BNC coax connectors, designated IN and

OUT.

 To connect E3/T3 interface:

1. Connect the receive line, using a 75Ω coaxial cable to the BNC connector

labeled IN.

2. Connect the transmit line, using a 75Ω coaxial cable to the BNC connector

labeled OUT.

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RAD Data comm FOM-T3 Dokumentacja Strona 29