Tektronix 071-0590-00 user manual Clear Control, Audio Beeper Function, Analyzer Error Messages

Reference

CLEAR Control

Pressing the CLEAR key will reset all active history indicators. Note that when you start a test, you must clear test results and history indicators by pressing the ERROR DETECTION CLEAR and ERROR HISTORY CLEAR keys respectively.

Audio (Beeper) Function

The Analyzer may be set up to "beep" each time a second is detected in which BER is above a specified threshold. The AUDIO VOL and RATE controls are used to configure this function.

Procedure To Set Up the Audio Alert Function

1.Press the AUDIO RATE up or down keys to increment or decrement the current audio alert BER threshold. The current value of the AUDIO RATE will be displayed in the bottom, right field of the display for about seven seconds after the last key press. Available selections are 1E-x, where x = 2, 3, ... 16

2.Press the AUDIO VOL up or down keys to increment or decrement the current audio alert volume. There are four volume levels. The minimum value is "OFF". Except when volume is set to the minimum level, a beep will occur each time you press an AUDIO VOL up or down key to indicate the current volume.

Analyzer Error Messages

When abnormal input conditions are detected, the Analyzer will display various error messages to indicate an unusual condition. These are explained below.

NO CLOCK: This message will appear in the frequency field (top, left) if no activity is detected at the CLOCK input for 20 ms.

NO DATA: This message will appear in the BER field (top, middle) if no activity is detected at the data (or clock) input for 20 ms.

LOW AMP: May appear when no signal or a low-signal is applied to the CLOCK or DATA input and AUTO_SEARCH is enabled

GB1400 User Manual 3-45