
Attaching and Configuring a Screw Terminal Panel/ Backplane
35
Configuring Jumper W1 - Common Ground Sense
Jumper W1 is installed when the board is shipped from the factory. This jumper connects Amp
Low (TB35) to Analog Ground (TB36) on the screw terminal panel. Amp Low is connected to
the low side of the board’s input amplifier.
When connecting pseudo-differential analog inputs directly to the screw terminal panel,
remove jumper W1 and connect Amp Low to a remote common-mode voltage to reject offset
voltages common to all 64 input channels. Refer to
page 46
for an example of using jumper
W1.
Note:
If you are using a 5B Series backplane, install jumper W3 on the backplane to connect
Amp Low to Analog Ground on the backplane.
Configuring Jumpers W2 and W3 - CJC
The DT730-T screw terminal panel is provided for thermocouple connections and includes a
CJC circuit for measuring temperature at the connector blocks on the screw terminal panel.
Power is derived from
±
Vcc on the DT3000 Series board.
Installing jumpers W2 and W3 connects the CJC circuit to channel 0. Jumper W2 connects the
temperature sensor to channel 0 high; jumper W3 connects channel 0 low to analog ground.
The output is 0.50 mV/
°
C or 12.5 mV at 25
°
C.
After scaling for the gain and thermocouple type, you must add this voltage to the
thermocouple voltage to remove the offset created by the temperature of the screw terminal
panel when measuring thermocouple inputs on the DT730-T directly.
Note:
5B and 7B thermocouple modules provide their own CJC and return a voltage that
already compensates for the CJC. Therefore, if you are using the DT730-T with a 5B or 7B
thermocouple module, you do not have to compensate for offsets as you do when measuring
thermocouples on the DT730-T directly.
Configuring Jumpers W4 to W7 - Analog Outputs on the 5B01 or 7BP16-1 Backplane
Note:
You cannot use analog output modules on the 5B08, 7BP08-1, or 7BP04-1 backplane.
Jumpers W4 to W7 are provided if you are using the DT730 or DT730-T screw terminal panel
with analog output modules on a 5B01 or 7BP16-1 signal conditioning backplane.
Install jumpers W4 and W5 to connect DAC0 from the data acquisition board to channel 14 on
the 5B01 or 7BP16-1 backplane. Jumper W4 connects DAC0 to channel 14; jumper W5 connects
DAC0’s return.
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Содержание DT3000 Series
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Страница 131: ...Appendix A 130 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...
Страница 147: ...Appendix C 146 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...
Страница 155: ...Index 154 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...