Measurement Computing WaveBook rev.5.3 - Manual (Page 93)

Synchronizing Multiple WaveBooks
The “A” and “E” Series WaveBooks can be synchronized to
other WaveBooks [of those series] or to WBK40 or WBK41
modules via the SYNC ports on those devices. Each unit has
two identical SYNC ports located on the rear panel. Either, or
both SYNC ports can be used to connect to the other devices
via SYNC cables, CA-74-1 or CA-74-5 (1-foot or 5-foot
cables, respectively). A WaveBook can be scan-synchronized
and triggered from any other “A” or “E” Series WaveBook that
is connected to it via a SYNC cable.
The above diagram shows how an “A” or “E” Series WaveBook can input or output synchronization
timing and trigger events on either SYNC connector. A more detailed block diagram follows.
Reference Note: The SYNC features are programmable via software. For detailed
information see the Using Multiple Devices and the daqAdcSetClockSource sections of
the Programmer’s Manual (p/n 1008-0901). A PDF version of the document is included on
the data acquisition CD.
PDF NOTE: During software installation, Adobe ® PDF versions of user manuals automatically install onto
your hard drive as a part of product support. The default location is in the Programs group,
which can be accessed from the Windows Desktop. Refer to the PDF documentation for
details regarding both hardware and software.
Synchronization Model for “A” and “E” Series WaveBooks
The synchronization model, above, illustrates the SYNC function that is available with WaveBook/512A,
WaveBook/516A, and WaveBook/516E.
The following apply:
One of three clocks can be used to drive the WaveBook’s acquisition scan rate. These are:
- the internal clock
- an external clock connected via pin 20 of the front panel DSUB25 connector
- the global sync (G-SYNC) input from the SYNC ports on the WaveBook’s rear panel
Both the SYNC connector input and the external clock input can be divided down.
When an “A-series” WaveBook is in the Master Mode, both the trigger condition and the
scan timing are output on the SYNC port. The global trigger (G-TRIG) is selected instead
of the TTLTRIG input from the front panel DSUB25.
WaveBook/512A, /516, /516A , /516E 897895 WaveBook Operation Reference 4-23