# Unit Detail

# Unit Monitoring

# Activation Diagnostic Loop backs/BERT

  FRAP Settings
  TFRAP Settings
  Warning

#### Activating Diagnostic Loop backs/BERT

  Diagnostic loop backs and bit rate tests (BERT0, resident on the FRAP and T-FRAP, can be activated and monitored through the Diagnostics window.
  To open the Diagnostics window and activate a loop back/bit rate test:
  1 Position the mouse arrow over the Unit Detail window's graphical representation of any port (e.g., DTE,COMM, or NET), and click the right mouse button.
  Note: Diagnostic loop backs and bit rate test patterns. Before activating any loop back or bit rate test make sure that the unit is configured for Dedicated/CBO mode.
  2 Select Diagnostics... from the list of pull-down menu options and click the left mouse button. This action will cause a Diagnostics window to be displayed. The Done button, located at the bottom of each Diagnostics window, when clicked will close the window. The Diagnostics window provides an overview of the unit's diagnostic state, the results of loop back and bit rate testing, and the means of activating supported loop backs and bit rate tests. The fields and button contained within the Diagnostics window are described in the following paragraphs.
  Test Description - A textual description of the unit's diagnostic loop back and BERT activity.
  Loop Back Status - Provides the activity status (e.g., No, Yes, Off) of each available diagnostic loop back and BERT.
  Test Results - This area of the Diagnostics window monitors the status of the activated loop back or BERT.

#### Diagnostic Test Results

  1. Position the mouse arrow over Select Test, located on the Diagnostics window top menu bar, and click the left mouse button. This action will cause a pull-down menu, listing all available loop backs and tests, to be displayed.
  Warning! Diagnostic loop back and bit testing is disruptive to FRAP AND T-FRAP application operations. Make sure that all users are notified before performing such operations.
  Note: The loop back time-out configuration feature defines the length of time (in minutes) a loop back may run before it time-outs and is automatically terminated.
  2 Select the loop back or bit test you wish to activate from the list of pull-down menu options, and click the left mouse button.
  Note: Selecting T-FRAP Remote CSU, Remote DSU, or Remote Bidirectional Payload loop backs will cause an additional pull-down menu (containing one selection) to be displayed.
  Contained in the test confirmation window is a description of the test and a warning statement to which you must respond. The warning statement reads: This test will disrupt application data. Are you sure you want to perform to test? Yes or No
  Respond to this prompt appropriately.
  3 Monitor the results of the test by viewing the Diagnostics window. After a diagnostic loop back or bit rate test has been activated, the Select Test pull-down menu (see Step 3) provided you with several options: To clear (reset to zero) loop back diagnostic counts listed in the Test Results column, click the Clear Statistics menu selection. To clear( reset to zero) the BERT Error, click the Inject Errors menu selection. To inject a BERT bit pattern error, click the Inject Errors menu selection. To de-activate (terminate) a loop back test, click the menu select in which corresponds to the test name. If a bit rate test was activated, click the Stop BERT menu selection.
  Note: The names of remote loop backs, once activated, will change to Loop Down or Loop Back Down(e.g., Remote CSU Loop Back Down).
  FRAP
  1. DTE Tx Bytes ~ Count of bytes transmitted on the DTE port.
  2. DTE Rx Bytes ~ Count of bytes received on the DTE port.
  3. Net Tx Bytes ~ Count of bytes transmitted on the network port.
  4. Net Rx Bytes ~ Count of bytes received on the network port.
  5. Net BPV Count ~ Count of Bipolar Violations (BPV).
  6. Net Attenuation ~ Estimate of network line attenuation.
  7. BERT Errors ~ Number of errors detected in the BERT test.
  8. Elapsed Time ~ Elapsed time since the BERT test was started or cleared.
  9. Errored Sec ~ Number of seconds containing errors in the BERT test.
  10. Resyncs ~ Number of times the BERT test has achieved sync on the pattern.
  11. Net Loop Sec Remaining ~ Time remaining (in seconds) before the network loop back times out.
  12. DTE Loop Sec Remaining ~ Time remaining (in seconds) before the DTE loop back times out.
  13. Unit Loop Sec Remaining ~ Time remaining (in seconds) before the unit loop back times out.
  T-FRAP
  1. Errored Sec ~ Count of errored seconds.
  2. Severely Err Sec ~ Count of severely errored seconds.
  3. Unavailable Sec ~ Count of unavailable seconds.
  4. Controlled Slip Sec ~ Count of controlled slip seconds.
  5. Bursty Errored Sec ~ Count of bursty errored seconds.
  6. Line Code ~ Count of line code violations.
  7. BERT Errors ~ Number of errors detected in the BERT test.
  8. Elapsed Time ~ Elapsed time since the BERT test was started or cleared.
  9. Net Loop Sec Remaining ~ Time remaining (in seconds) before the network loop back times out.
  10. DTE Loop Sec Remaining ~ Time remaining (in seconds) before the DTE loop back times out.
  11. Unit Loop Sec Remaining ~ Time remaining (in seconds) before the unit loop back times out.