User Manual

amount of the analyzer memory space for saving of a sample, because the
fact that the sample capture time must be saved as well.
• 15 inputs, 1 synchronous clock input (only a first input on either port
may be used as the clock signal), rising or falling edge, clock speed should
be within the range of 1MHz to 99.9 MHz. The clock signal must be
present before start of a test, several last samples are not contained in
captured test because of pipelining.
Data compression is used in any case, disregarding selected mode, giving
possibility to capture long time running signals with precise timing. Actual
compression ratio depends on characteristics of particular signal.
5.2 Input pins
Term input pin refers to physical input of SIGMA2. For user's convenience,
aliases can be applied by Settings/Inputs setup or using I hotkey. The name
may consist of letters, numbers and spaces and may be prefixed by hash (#),
slash (/) or minus sign (-) to indicate negative polarity. Input names can also
be indexed using a number in brackets which is typical for buses.
Bus copy function and keypresses Ctrl+↓ or Ctrl+↑ help to automate the
naming process of bus signals. Fill traces function can be used to generate
traces according to input signal names automatically.
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Fig. 3: Sampling with asynchronous clock
Clock
Data
20ns
Fig. 4: Sampling with synchronous clock
Clock
Data