User`s guide

Add/Delete Channel - Clicking on
button will display a
selection box for adding or deleting channels.
Use the keypad to select one or more channels to measure.
Buttons will toggle channel on or off. Click on Enter when done.
Add command (View menu) - Adding a view opens a new (default)
tool window associated with the active tool. There may be many
opened window views of one tool, but all views reflect any
measurements or settings for that tool.
To see both a measurement plot and summary page, open a tool, select Add from the View pull-down menu or
click on the New View button (see below), select Summary from the View menu on the Dialog Bar.
- New View button performs the same function as the Add command.
Add Device - Select the "Add Device" button to add an optical device to the remote device list and establish the OE-2
address for the device.
Add this Plot Button - Clicking on button will add the selected plot.
AG-100 Mode - Select either Pattern Match or Edge Count. In Pattern Match mode, the AG-100 will generate a
Pattern Marker by matching to a unique 40-bit sequence of the pattern. In Edge Count mode, the AG-100 will
generate a pattern marker upon repetition of a user-specified number of positive or negative edges.
All Outputs - Enables/disables outputs of DTS-550™. Default is Off.
In order to receive any type of output signals
from the unit, the All Outputs control needs to be set to On and the Synthesizer control needs to be set to On.
Allen Variance - The Allan Variance is a measure of frequency stability. It is a non-dimensional factor giving the
variance of the signal frequency over a given period of time. To correctly measure the Allan Variance, GigiView
should be in repeat cycling mode and have the time delay set to a specific interval. The value presented in
GigiView is the Allan Variance proper and not the Root Allan Variance. The Allan Variance is typically done over
one second periods. The frequency is measured each second and compared to the frequency of the previous
second. The discrete frequency change is then divided by the nominal (first sample) frequency before being
included in a variance calculation. The resultant number is not based on the input frequency, thus allowing quality
comparisons between signals of differing frequencies.
The Allan Variance is calculated from two data sources: the samples still residing in the strip chart (the last 500) and
also from all measurements taken. As with computing the overall average, a two-stage algorithm is used with the first
5000 samples used explicitly and subsequent samples being incorporated with an exponential decay technique.
Alpha Factor - The varying of the Alpha Factor illustrates the inverse proportionality relationship between the
spectral peak width and the sidelobe rejection of the Kaiser-Bessel window. As the Alpha Factor increases, the
spectral peak widens and the sidelobes shrink. As the Alpha Factor decreases, the spectral peak narrows and the
sidelobes increase in amplitude.
Amplifier (dB) - Choose the gain of the electrical amplifiers that follow the optical to electrical converter. This
allows you to increase electrical output signal strength.
Annotation command (Edit menu) - Allows user to add or modify a text annotation on the summary page of the
current tool. This text will be displayed, saved and printed with the summary page. Also, right clicking on the
summary view will open the annotation editor.
Apply - Implement changes/parameters indicated.
Arm1 Edge - DTS compatibility mode. Select rising or falling edge for Arm1.
Glossary © WAVECREST Corporation 2005
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