User's Manual

ADCP-75-348 • Issue 1 • 04/2008

Page 22

3. If a third HU will be connected to the network, connect a second EXT REF interface cable

to the remaining network port on HU #2.

4. Route the second EXT REF interface cable to HU #3 and connect the cable’s free end to

the port that is the logical opposite of the EXT REF interface connection at HU #2.

5. Repeat steps 3 and 4 for each additional HU that is added to the network. A diagram of

typical EXT REF interface connections is shown in

Figure 16.

Figure 16. Configuring EXT REF Connections with Multiple Host Units

6.10 Computer Connection (CRAFT)

The service interface connection between the HU and the computer is supported by a single RJ-

45 connector. Use the following procedure to install the service interface cable:

1. Connect one end of the service interface cable (accessory) to the CRAFT port as shown in

Figure 17.

2. Route the service interface cable to the computer and connect the free end of the cable to

the computer’s port. Refer to the user manual provided with the computer to locate and

configure the specified port.

Note: Connect OUT to IN and IN to OUT. If connected to a EXT REF OUT port at HU

#1, connect to the EXT REF IN port at HU #2. If connected to a EXT REF IN port at HU

#1, connect to a EXT REF OUT port at HU #2.

HOST UNIT 3 HOST UNIT 2 HOST UNIT 1

OUT EXT IN

NET IN NET OUT

22414-A

COAXIAL

INTERFACE CABLES

TO NEXT HOST UNIT

(NOTE: LAST HOST HAS NO

CONNECTION AT EXT OUT)

OUT EXT IN OUT EXT IN

REF CLOCK

INPUT