Data Translation DT3000 Series, Руководство пользователя, Страница: 39 / 156

Chapter 3
38
To connect a 7B Series signal conditioning backplane to the DT730 or DT730-T screw terminal
panel, do the following while referring to
Figure 6 :
1. Plug one end of the AC1315 cable into the J2 connector of the DT730 or DT730-T screw
terminal panel.
2. Plug the other end of the AC1315 cable into the 26-pin connector of the AC1393 adapter
cable; then, attach the 25-pin connector of the AC1393 adapter cable to the 7B Series
backplane.
3. Connect power supply HES14-21 to the V+A and COM screw terminals on the 7B Series
backplane and to the wall outlet.
Considerations When Using 5B or 7B Series Accessories
When using the DT730 or DT730-T screw terminal panel with 5B or 7B Series signal
conditioning accessories, keep the following considerations in mind:
• Configure your DT3000 Series board to use single-ended mode. You must remove jumper
W1 on the DT730 or DT730-T screw terminal panel, as described on page 35 . If you are
using a 5B Series backplane, you must also install jumper W3 on the 5B Series backplane
to connect Amp Low to Analog Ground.
• The 5B08 and 7BP08-1 map to single-ended analog input channels 0 to 7, and the 7BP04-1
maps to single-ended analog input channels 0 to 3. If you are using a signal conditioning
module for an analog input channel, ensure that you connect the analog input signal to
the module on the signal conditioning backplane. For channels that do not use signal
conditioning, connect the analog input signals to the DT730 or DT730-T screw terminal
panel.
• By default, the 5B01 and 7BP16-1 backplanes map to single-ended analog input channels 0
to 15. However, by configuring jumpers W4 to W7 on the DT730 or DT730-T, as described
on
page 35 , you can use channels 14 and 15 on the 5B01 or 7BP16-1 backplane as analog
output channels 0 and 1.
Note: You cannot use analog output modules on the 5B08, 7BP08-1, or 7BP04-1
backplane.
• 5B thermocouple modules provide their own CJC and return a voltage that already
compensates for CJC. Therefore, when using 5B Series modules, you do not have to
compensate for offsets as you do when measuring thermocouples on the DT730-T directly.
• The output of many 5B modules is ±5 V. The output of many 7B modules is 0 to 10 V.
Ensure that you select an input range that matches the output of the 5B or 7B modules that
you are using. For example, if you are using 5B modules that have an output of ±5 V, use a
bipolar input range and a gain of 2 on the DT300 Series board.
• Connect all unused inputs to analog common. Reading an open channel can cause settling
problems on the next valid channel.
• Refer to the user’s manuals and data sheets for the 5B and 7B Series for more information.
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