Measurement Computing USB-1608FS-Plus - Manual (Page 11)

USB-1608FS-Plus User's Guide Functional Details
11
Figure 3. Screw terminal pinout
Signal connections
Analog input
You can connect up to eight analog input connections to the screw terminal containing pins 1 to 20 ( CH0 IN
through CH7 IN .) Connect unused analog input terminals to ground terminals during operation. For example, if
you are not using terminal 15 ( CH7 IN ), connect this terminal to terminal 16 ( AGND ).
All analog input channels are configured for single-ended input mode. All analog input signals are referenced to
ground (
AGND ):
 Connect the wire carrying the signal to be measured to
CH# IN .
 Connect the second wire to
AGND .
The input voltage ranges are ±10 V, ±5 V, ±2.0 V, ±1.0 V.
For more information on analog signal connections
For more information on single-ended inputs, refer to the Guide to Signal Connections (this document is
available on our web site at
www.mccdaq.com/signals/signals.pdf ).
Channel-Gain queue
The channel-gain queue feature allows you to configure a different gain setting for each channel. The gain
settings are stored in a channel-gain queue list that is written to local memory on the device.
The channel-gain queue list can contain up to eight unique elements. The channel list must be in increasing
order. An example of a five element list is shown in the table below.
Sample channel-gain queue list
Element Channel Range
0 CH0 BIP1V
1 CH2 BIP2V
2 CH4 BIP10V
3 CH6 BIP1V
4 CH7 BIP5V