External Components; Screw Terminals - Measurement Computing USB-234 User Manual

USB-234 User's Guide

External components

The external components on the USB-234 are shown in Figure 3.

Screw terminals

The screw terminals provide the following connections (refer to Figure 4 and Figure 5 for pinout diagrams):

Eight single-ended/four differential analog inputs (

Two analog outputs (

Digital trigger input (

Counter input ( CTR

User voltage output

Analog ground reference (
Caution! To ensure the specified EMC performance, the length of any wire or cable connected to the screw
terminal connector must be no longer than 0.5 m (20 in.).
1 Screw terminal pins 1 to 16
2 Screw terminal pins 17 to 32
Figure 3. USB-234 external components
and )
AOUT0 AOUT1
TRIG )
)
)
(+VO
AGND ) and digital ground reference (
3 LED Indicator
4 USB connector
to
CH0H/CH0L CH3H/CH3L
GND )
11
Functional Details
)