Measurement Computing StrainBook/616 User Manual
Page 108
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