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.
Distributed by MicroDAQ.com, Ltd. www.MicroDAQ.com (603) 746-5524
