USB-2416 User's Guide
Functional Details
14
Activity LED
The (USB) Activity LED is the bottom LED on the right side of the USB-2416 housing. It blinks rapidly when
both the USB cable and external power cables are plugged in. It continues blinking rapidly while the device is
connecting to the computer, and then turns solid.
Whenever the device receives a USB command, the Activity LED blinks off and then returns to solid green.
When an analog in scan is running, the Activity LED blinks continuously.
USB connector
The USB connector is on the right side of the USB-2416 provides communication.
External power connector
The USB-2416 require external power through this connector to provide sufficient power for the USB-2416.
Connect the PS-5V2AEPS power supply to the external power supply connector. This power supply provides
5 VDC, 2 A power to the USB-2416.
37-pin DSUB expansion connector
The USB-2416 expansion connector is intended to connect directly to an AI-EXP32 expansion module. Do not
attempt to use any of the expansion port pins for any other purpose.
Power down the USB-2416 before connecting it to an AI-EXP32.
Figure 8. DSUB37 expansion connector pinout
Analog input mode
The USB-2416 makes high-resolution voltage measurements in either a single-ended or fully differential mode.
You can configure the USB-2416 for the following voltage input ranges.
±20 V
±10 V
±5 V
±2.5 V
±1.25 V
±0.625 V
±0.3125 V
±0.15625 V
±0.078125 V
Each analog input channel has the following measurement parameters:
signal type of volts or thermocouple type J, K, T, E, R, S, B, or N
full scale voltage from -20 to + 20 VDC
