Measurement Computing USB-QUAD08 - Manual (Page 8)

USB-QUAD08 User's Guide Installing the USB-QUAD08
8
Configuring the channel input mode
The counter inputs are configurable as single-ended (±12 V ) or differential (±12 V; differential input ±14
Vmax) mode via on-board switches (see Figure 1).
Figure 1. Channel input mode switch
Figure 2 shows the locations for the counter input mode switches and the counter LEDs. Using the board
orientation shown in Figure 2, slide the switch to the left (toward the USB connector) for single-ended mode, or
to the right (towards the 37-pin connector) for differential mode. Note that the "dot" is visible on the switch
when configured for differential mode, regardless of the board orientation.
By default, the board is shipped with the counter inputs configured for single-ended operation (as shown in
Figure 2).
Figure 2. Input mode switch and LED locations
The following table lists the counter input channel associated with each switch.
Counter input channel
Input 0 1 2 3 4 5 6 7
Phase A S7 S5 S23 S3 S26 S1 S28 S15
Phase B S8 S6 S9 S4 S25 S2 S27 S16
Index S24 S21 S10 S19 S29 S18 S30 S20
Installing the hardware
Install the MCC DAQ software before you install your board
The driver needed to run your board is installed with the MCC DAQ software. Therefore, you need to install the
MCC DAQ software before you install your board. Refer to the Quick Start Guide for instructions on installing
the software.