Measurement-computing StrainBook/616 Manuel d'utilisateur Page 20

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SYNC Cables
CA-74-1 (1 ft.) or
CA-74-5 (5 ft.)
Ethernet Cable
to PC
TR-40U Power
Adapter
Three StrainBook/616 Units, Synchronized
Not all trigger modes are supported in multiple StrainBook/616 Systems.
Note: In multiple StrainBook applications, the system can appear as one large, synchronous system.
However, a system composed of many StrainBooks can be configured as several independent
systems, and with each system having its own triggering and sampling rates.
The parallel Expansion Port on a StrainBook can be used to attach a WBK40 thermocouple module or a
WBK41 Multi-Function module. The units are briefly discussed in chapter 10 of this manual and are
detailed in the WBK Options User’s Manual (p/n 489-0902). A PDF version of the document is included
on the data acquisition CD. Note that the SYNC signal on a StrainBook can connect to a SYNC port
theWBK40 or WBK41, ensuring that both A/Ds will operate in synch.
There are two advantages of seamlessly supporting multiple StrainBooks in one system.
o First, expansion beyond the 64 channel capacity of a single StrainBook.
o Second, more bandwidth per channel.
For example, a 16 channel system consisting of one StrainBook and one WBK option
provides a maximum bandwidth of 62.5 kHz/channel, i.e., 1M divided by 16.
However, a sampling rate of 125 kHz/channel can be achieved by using one master
StrainBook connected to one slave StrainBook. This new “per-channel” sampling
rate is calculated as follows: 1 MHz divided by 8 equals 125 kHz/channel.
2-6 Operation Reference 967794 StrainBook/616
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