2
System Hardware
2.1 System Schematic
The QNET HVAC provides an integrated amplifier and a communication interface with the NI ELVIS II
(+)
for the
amplifier command and sensor readings. The interaction between the different system components on the QNET
HVAC is illustrated in Figure 2.1. The NI ELVIS II
(+)
is interfaced to the PC or laptop via USB link in the QNET HVAC
Interface. The NI ELVIS II
(+)
block reads the angular encoder inputs and commands the power amplifier that drives
the DC Motor.
Figure 2.1: Interaction between QNET HVAC components
The schematic given in Figure 2.2 illustrates the main QNET HVAC components and how they interact with the NI
ELVIS II
(+)
.
Figure 2.2: Interaction between QNET HVAC components
2.2 Hardware Components
The main components comprising the QNET HVAC are labeled in Figure 2.3 and are listed in Table 2.1.
QNET HVAC - User Manual
6
