Measurement Computing USB-2404-UI - Manual (Page 10)

10
Chapter 3
Functional Details
Components
The USB-2404-UI has the following external components:
 Spring terminal connectors
 Strain relief slot for USB cable
 USB connector
 LED
Figure 2. Front panel
Figure 3. Rear panel
Spring terminal connectors
The USB-2404-UI has four 6-terminal connectors (CH0 to CH3) that provide connections for four analog input
channels. The signal names for the spring terminal in each connector are listed in the table below.
6-terminal connector signal names
Terminal
number Signal
name Signal description
1 T+ TEDS Data
2 T– TEDS Common
3* EX+/HI Positive excitation or input signal
4 HI Positive input signal
5* EX–/LO Negative excitation or input signal
6 LO Negative input signal
* Depending on the input mode, terminals 3 and 5 are either excitation signals or input signals.