User Manual

Main panel contains seven LED indicators providing with overall status
information at a glance.
 ON-LINE lights whenever SIGMA is connected with PC through USB
 READY lights when SIGMA has been configured and is in idle state
 USB BUSY indicates that data transfer is in progress
 TRIGGER WAIT SIGMA is waiting for trigger condition
 BUSY SIGMA is acquiring data
 TRIGGER DETECT flashes when trigger cond. or trigger pattern has been
matched
 PIN CHANGE flashes upon change on an input pin
The button is not available at the old version of SIGMA.
5. USING SIGMA & OMEGA LOGIC ANALYZERS
SOFTWARE
5.1 Modes of operation
SIGMA2 can operate in one of several modes possibly adapted to actual user
needs or particular debugged application (all inputs with basic sampling rate or
limited number of inputs at higher sampling rates). The mode of operation can
be selected in Settings/Clock source.
Fig 2: Dialog možností režimu práce
• 16 inputs, 50 MHz (or slower, divided by 2 to 256)
• 8 inputs, 100 MHz, limited to port 1 only
• 4 inputs, 200 MHz, limited to first 4 inputs of port 1 only
• 16 inputs, 50 MHz, sampled only when selected pin has changed
(asynchronous clock), rising, falling or both edges, max. clock speed
~ 40 MHz with 1:1 duty cycle, the asynchronous mode requires larger
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