Technical data

Chapter 18 491
T1 Analyzer
Making T1 Measurements
T1 Analyzer
• Tx Line Build Out [Tx LBO]: Sets the Tx level and pulse shape to simulate the
signal conditions that would be encountered at the end of a distant transmission
cable. This is useful for testing equipment suspected of having trouble receiving
the signals found in typical applications.
— 0 dB LBO = 0 dBdsx = 6 Vpp
— -7.5 dB LBO = -7.5 dBdsx = 2.53 Vpp
— -15 dB LBO = -15 dBdsx = 1.07 Vpp
• Second Tx: Selects the source of data of the signal available at the Secondary
Tx jack.
— AIS - The signal at the Secondary Rx jack is an unframed all ones aka AIS.
— Second Rx - The Secondary Rx signal is buffered and looped back to the
Secondary Tx jack.
— Primary Rx - The signal at the Primary Rx jack is buffered and internally
routed to the Secondary Tx jack.
Display/Sound Button Selections
Configure the following for the measurement you’re doing:
• Status: Allows you to select which status panel is active.
• Alarms: Displays those errors occurring on either the primary or secondary
channel, depending on your selection. Displays in the bottom-right of the screen.
• Results: You can choose an error and select results you want to drill down to;
shows more metrics on error you select. Displays in bottom-right of screen.
• Sound: Works on single channels only and enables you to turn sound on and off.
Use sound mostly to listen for drop outs or changes in the signal.
• Volume: Enables you to set the volume of speaker output.
Control Button Selections
On the Control button, the available buttons are unique to the test mode you select.
Once you set up your display, you can change settings such as patterns, alarm
injections, and so forth, while you make the measurement.
• Pattern: Configures the test set to expect a particular test pattern. Many test
patterns are available to 'stress' the circuit in a particular manner or to gain
maximum insight into a particular problem.