Chapter 8: ESP-View Diagnostic Utility 71
• Internal - the data will be looped back internally.
• External - the data will go out the port to a loopback apparatus such as a wrap plug.
6. Select a Pattern.
• Barber Pole - the data is provided by the ESP hub.
• User Defined - the ESP hub will use whatever is specified in the adjacent Data text field
(up to 256 characters).
7. In the Duration (seconds) field, enter the number of seconds the loopback tests will run. If you
specify zero, the tests will run continuously until the Stop button is clicked.
8. Click Start. Polling requests will be sent to the hub every 50 milliseconds. When a reply is
received, the display counts are updated. A rotating circle in the lower right corner of the win-
dow indicates that the loopback tests are running.
9. To pause the tests, click Pause. To resume, click Pause again.
10. The loopback tests will stop automatically when the configured Duration interval elapses (if
non-zero). You may stop the tests at any time by clicking the Stop button.
Status
The Status function displays configuration information and traffic statistics for one or all ESP hub
serial ports.
Table 8.2 describes the fields in the main panel of the ESP-View utility Status window. Some
information is not valid if the port is not currently in use. In those cases, those fields will be empty.
Table 8.2: ESP-View Utility Status Display
Field Description
Remote IP
IP address of the connected remote client, in network order. If not connected, 0.0.0.0
is displayed.
Connection Method
Current connection method: Idle, serial port redirection, Telnet server, TCP server,
TCP client, serial configuration or modem emulation.
Total Rx Bytes Number of bytes sent to the serial port since the last reboot.
Total Tx Bytes Number of bytes received from the serial port since the last reboot.
Rx Bytes
Number of bytes received from the serial port since the current connection was
established. If not connected, 0 is displayed.
Tx Bytes
Number of bytes sent to the serial port since the current connection was established.
If not connected, 0 is displayed.
Parity Errors Number of parity errors on the serial port since the last reboot.
Framing Errors Number of framing errors on the serial port since the last reboot.
Overrun Errors Number of overruns on the serial port since the last reboot.
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