
StrainBook and WBK16 Daisy-Chain
StrainBook System with two WBK16 Modules
* Note that earlier TR-40U units have a limit of 2.7 A @ 15 VDC. Those supplies still provide adequate power for StrainBook and WBK16.
TR-40U
3.3 Amp limit
@ 15 VDC *
WBK16
WBK16
StrainBook/616
CA-129 CA-150
CA-242 or
CA-242-7
Device Interface Side Channel Input Side
The illustrated system consists on one StrainBook/616 and two WBK16 Strain Gage Modules. An
explanation of connections follows.
Power
– A separate TR-40U power supply is being used for each of the three devices. The DIN5 cable
end of the TR-40U connects POWER IN DIN5 connector on the device. The other end of the TR-40U
connects to an AC outlet (90 to 264 VAC).
Ethernet
– The CA-242 [or CA-242-7] Ethernet patch cable connects the StrainBook to the host PC’s
Ethernet port or to a network Ethernet hub.
Expansion Control
– The CA-129 is a 15 pin connector cable used for Expansion Control.
o One CA-129 connects StrainBook’s EXPANSION CONTROL port to the first WBK16’s
EXPANSION CONTROL IN port.
o A second CA-129 runs from the first WBK16’s EXPANSION CONTROL OUT to the second
WBK16’s EXPANSION CONTROL IN.
Expansion Signals
– The CA-150 is a BNC-to-BNC cable used to carry Expansion Signals. The
signals go to the StrainBook’s Analog-to-Digital Converter (ADC).
o One CA-150 goes from the upper WBK’s EXPANSION SIGNAL OUT (BNC connector) to
the lower WBK16’s EXPANSION SIGNAL IN.
o A second CA-150 connects the lower WBK16’s EXPANSION SIGNAL OUT to the
StrainBook’s EXPANSION SIGNAL IN (BNC connector).
Unit Channel
#
StrainBook/616 1-8
1
st
WBK16 9-16
2
nd
WBK16 17-24
3
rd
WBK16 25-32
4
th
WBK16 33-40
5
th
WBK16 41-48
6
th
WBK16 49-56
How Analog Input Channel Numbers are Determined
The analog input channel numbers are determined by the order in which the WBK
modules are connected to the StrainBook.
• Channels 1 through 8 are the StrainBook/616 channel inputs (via DB9).
• Channels 9 through 16 are located on the first expansion WBK16 unit,
i.e., the module connected directly to the StrainBook.
• For each additional WBK16 channel numbers are added in a group of 8
as indicated in the table at the right.
Note: No more than seven WBK16 Expansion Modules can be attached to one
StrainBook/616.
7
th
WBK16 57-64
10-4 System Expansion 968594 StrainBook/616 User’s Manual
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