User`s guide

Start Arm - Choose channel for Start Arming input. See also Arming.
Start Delay (Periods) - Set number of periods to delay before taking measurements relative to the Arm edge.
Start Edge Voltage - When Threshold Voltage is in Auto, this box displays the voltages set by Pulsefind. When
Threshold Voltage is in USER, the box permits manual entry of a voltage.
Start Voltage - This is the voltage threshold used to start the chosen measurement. This value is derived from
PULSEFIND when "Threshold Voltage" is in AUTO. If "Threshold Voltage" is in USER VOLTS, you can enter
a fixed value to be used. In USER VOLTS, PULSEFIND will have no effect on the threshold voltages.
Status Bar - The status bar is displayed at the bottom of the GigiView window. To display or hide the status bar, use
the Status Bar command in the View menu. A check mark appears next to the menu item when the Status Bar is
displayed. The left area of the status bar describes actions of menu items as you use the arrow keys to navigate
through menus. This area similarly shows messages that describe the actions of toolbar buttons as you depress
them, before releasing them. If after viewing the description of the toolbar button command you wish not to
execute the command, then release the mouse button while the pointer is off the toolbar button.
The right areas of the status bar indicate the following information:
Indicator Description
CURSOR Displays the position of the cursor with respect to the current window.
REC/PLAY Indicates the status of the macro recorder.
RUN The current tool is repetitively acquiring measurements.
BUSY The instrument is currently busy performing an operation.
Stop Arm - Choose channel for Stop Arming input. See also Arming.
Stop Edges to Skip - Will determine the number of edges to skip before the
time measurement stops. When measuring Period, a value of zero will
create a histogram of single period measurements. A value of one will
create a histogram of double period measurements, etc. Thus, when
skipping one edge, the mean measurement would be doubled (See
example to the right).
Stop on Success - The Tailfit option has certain quality requirements that
must be met in order to successfully separate RJ and DJ. If there is a
large DJ component, this may require several passes. Enable this option
and then use Cycle in order to accumulate until the requirements are met.
Stop Voltage - When Threshold Voltage is in Auto, this box displays the voltages set by Pulsefind. When Threshold
Voltage is in USER, the box permits manual entry of a voltage. See Measurement Theory.
Summary - Displays textual equivalent of composite data.
Summary Units - Select unit of measure. See also Jitter Mode.
Sync Amplitude (V) - Enter sync amplitude for Custom output configurations. See Sync Levels for limits.
Sync Divider - Sets the Sync Divider value. The Sync Divider will scale the sync frequency/period down by the divisor
entered. The Sync Divider control is only available when the Sync Mode is set to Bit Clock or Independent. When
the Sync Divider is set between 1 and 255, the SYNC OUT waveform appears as a pulse-type waveform. The pulse
width will be the same for all division factors from 1-255. However, when a value larger than 255 is used in this
control, the SYNC OUT waveform will appear as a clock-type waveform with identical high and low times.
Sync Frequency (MHz) - Sets the SYNC OUT frequency (MHz).
Sync Level - This list control displays 10* predetermined and 3 user definable presets for the configuration of the
impedance, high, low and voltage limit settings for the selected Output or Sync levels. First, the user should make
a selection from the Output Level control. Choices appear for many types of standard logic, including ECL,
PECL, TTL, CMOS (3.3V), and CMOS (5V). Selecting any of these will automatically determine the input's
voltage threshold and termination impedance, and these values will be filled in and cannot be selected for the user
to change. There are also choices for three custom voltage levels available to the user. If any of the custom
voltage levels are chosen, the termination impedance and voltage threshold controls become active and their
values need to be specified. See the DTS-550™ Operator’s Guide for Sync Level parameters.
Glossary © WAVECREST Corporation 2005
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