Analog Input Terminals (Ch0 In - Ch7 In) - Measurement Computing miniLAB 1008 User Manual

miniLAB 1008 User's Guide

Analog input terminals (CH0 In - CH7 In)

Connect up to eight analog input connections to the screw terminal connections labeled
CH0 In through CH7 In. Refer to the
these pins.
You can configure the analog input channels as eight single-ended channels or four
differential channels. When configured for differential mode, each analog input has
12-bit resolution. When configured for single-ended mode, each analog input has 11-bit
resolution, due to restrictions imposed by the A/D converter.
Single-ended configuration
When all of the analog input channels are configured for single-ended input mode, eight
analog channels are available. In single-ended mode, the input signal is referenced to
signal ground (GND). The input signal is delivered through two wires:
The wire carrying the signal to be measured connects to CH# IN.
The second wire connects to GND.
The input range for single-ended mode is ±10 V, max, with a gain of 2. No other gains
are supported in single-ended mode.
Figure 4-4
Single-ended measurements using differential channels
To perform a single-ended measurement using differential channels, connect the voltage
to an analog input with an even-number, and ground the associated odd-numbered
analog input. This configuration is shown in Figure 4-4.
illustrates a typical single-ended measurement connection.
+
1.5
-
Figure 4-4. Single-Ended Measurement Connection
pinout diagrams
CH0
CH1 (differential configuration)
GND
4-7
Functional Details
on page 4-6 for the location of