Chapter 2
Using the Controller
19
The Trigger Out is an output from the NIBP Controller that produces a 5 V
signal during the measurement cycle. This can be connected to the Trigger
input of the PowerLab to control the duration of recording, or to start
LabChart or Scope recording when the cycle is started.
Both these controls are optional and allow much more automation of the
recording process, if desired or required.
Connecting to Other ADInstruments Front-ends
The NIBP Controller is designed to be used with other ADInstruments front-
ends. The NIBP Controller can be used anywhere in the series of I
2
C
connections, as long as there are enough analog inputs on your PowerLab to
support the required number of signals of the front-ends.
Power-up Test
Follow these steps to perform a power-up test of the NIBP Controller:
1.
Connect your NIBP Controller to your PowerLab, as above.
2.
Turn on your PowerLab. The Power indicator should light.
3.
The NIBP Controller Power indicator should also light and the Status
indicator should be off.
Recording with the NIBP Controller
Follow these steps to begin recording with the NIBP Controller:
1.
Once the NIBP Controller is connected to your PowerLab as described
above and as shown in Figure 2–1, connect the pressure cuff to the Cuff
connection on the front of the NIBP Controller, and connect the pulse
transducer to the Pulse Input connector. Connect the pressure cuff and
pulse transducer to the mouse or rat. A typical experimental setup is
shown in Figure 2–2.
2.
Perform a power-up test of the NIBP Controller, described above.
3.
Select the appropriate filter setting using the Filter Setting switch on the
front panel of the NIBP Controller, and set your maximum cuff inflation
pressure, by using the switch on the rear panel.
4.
Open LabChart on your computer and set it up for the two channels
attached to the NIBP Controller; one channel for the pulse signal, and the
other for pressure. The pulse channel range should be set to 50 mV. The
pressure channel range should be set to 1 V, and Units Conversion should
be set up to give 0 V = 0 mmHg and 1 V = 300 mmHg.
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