HP Fiber-Optic Hub Plus User's Guide download pdf (Page 29)

If You Have Trouble with a Terminal or Modem Connection

If you have connected a terminal or modem according to the previous instructions, and you do

not get a prompt after you have pressed RETURN several times, then try the following

procedures in sequence until you get the prompt:

1. Connection Reset Procedure:

1. Detach, then reattach the console or modem cable from the hub.

2. Press RETURN several times for the prompt.

2. Cycle Power Procedure:

1. Cycle power on the hub by unplugging the power cord and plugging it in again.

2. When the power-on self-test is done, press RETURN several times for the prompt.

3. Adjust Baud Rate Procedure:

1. Temporarily set the baud rate in the terminal’s own configuration to 2400.

2. Press RETURN several times for the prompt.

3. Set the hub’s baud rate to the desired rate (for example 9600) by using the console’s

Speed command (see “Console Commands” in chapter 3).

4. Set the terminal’s configuration to this new baud rate, and press RETURN again for the

prompt.

4. Test Console Port Procedure:

1. Detach the console cable from the hub. Attach the console port’s loopback connector to

the hub. (HP part no. 5062-3355––see appendix A, “Cables and Connectors”.)

2. Cycle power on the hub by unplugging the power cord and plugging it in again. As part

of its power-on self-test the hub tests the console port.

3. If the test passes (the fault LED goes OFF), the console port should be functional.

a. Remove the loopback connector and cycle power again.

b. Connect the console cable to the hub. Press RETURN several times for the prompt.

4. If the fault LED remains ON, the hub is faulty and must be replaced.

Installation 2-13

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HP Fiber-Optic Hub Plus User's Guide Page 29