Teledyne LeCroy SAS Suite User Manual - Manual (Page 175)

SASSuite User Manual Version 6.25
LeCroy Corporation
165
Chapter 9: External Interface for Trigger
In /Out
With each Avalanche or SASTracer analyzer, LeCroy includes two mechanisms for low
latency communications with general purpose test and measurement equipment:
• BNC (or SMA) External IN / OUT - This connection can be used to send
clocking information and recording commands from one analyzer to
another (see Setup for Cascaded Multiple Analyzer Use for SASTracer
in Chapter 11). The BNC/SMA interface can also be used for
transmitting and receiving trigger in / out signals from general purpose
instruments such as a LeCroy Oscilloscope or an InFusion Error
Injection system.
• Breakout board - The breakout board utilizes a LV TTL level signal
which can provide a simple trigger in/out interface to the analyzer. It
can also be used to configure the analyzer to trigger on a specific bit
pattern received on the break out board data pins.
BNC/SMA External In / Out
The BNC/SMA External Out capability allows users to specify protocol level events as
Trigger Out signals to external instruments. This provides a mechanism for SAS or SATA
link layer errors detected on the analyzer to trigger an attached oscilloscope. The
BNC/SMA External In provides a similar mechanism allowing physical layer instruments
to signal the analyzer to trigger at a specific moment.
Using the
SMA Trigger
Out on an
Avalanche
Step 1 Attach the SMA EXT OUT connector to an appropriate Trigger
In connector on a general purpose test instrument using the
provided SMA cable or an SMA-to-BNC cable, as appropriate
Step 2 In the SASSuite software, under Recording Options
(Avalanche)..., select the Triggering/Filtering tab
Step 3 In either the Global Rules or Sequence section, click on the
<Click here to add an event> link and select the event desired
to initiate the external Trigger Out signal, then click OK
Step 4 Click on the <Click here to add an action> link and select the
SMA Output action, then modify the parameters under Output
Action and Pulse Length to be appropriate to the external
instrument, then click OK
Step 5 If you wish the event to also be used to trigger the Avalanche
analyzer, select the <Click here to add another action> link
and select Trigger, then click OK
Step 6 Start the recording on the Avalanche analyzer.