USB-2416 User's Guide
Installing the USB-2416
8
Connecting an AI-EXP32 to the DSUB37 expansion connector
Use the 37-pin expansion connector to connect the USB-2416 to an AI-EXP32 expansion module.
To connect the two devices directly to each other, complete the following steps:
1.
Disconnect the USB cable from the USB-2416.
2.
Remove the external power cable from the USB-2416.
3.
Connect the two devices together by inserting the AI-EXP32 male DSUB37 connector into the female
DSUB37 connector on the USB-2416.
Figure 2. USB-2416 directly connected to an AI-EXP32
4.
Turn the connected devices over and secure the connection by screwing the connection plate to both
devices, as shown below.
Figure 3. USB-2416 secured to an AI-EXP32
5.
Connect the external power supply to the power input port of the USB-2416, and then plug it into an
AC outlet.
6.
Connect the USB cable from the USB-2416 to the host computer USB port.
Connect to a USB 2.0 high-speed hub to achieve the highest transfer rate (480 Mbps). When connected to a
USB 1.1 full-speed port, the transfer rate is limited to 12 Mbps.
Configuring the hardware
Except for the DIO pull-up selection, all hardware configuration options on the USB-2416 are software
controlled. You can select some of the configuration options using InstaCal, such as the analog input
configuration (single-ended or differential channels). When measuring from thermocouples, make sure you
configure the channels for differential mode.
Caution!
Turn off power to all devices connected to the system before making connections. Electrical shock
or damage to equipment can result even under low-voltage conditions.
Information on signal connections
General information regarding signal connection and configuration is available in the
Guide to DAQ Signal
Connections
www.mccdaq.com/support/DAQ-Signal-Connections.aspx
Calibrating the hardware
Factory calibration
The Measurement Computing Manufacturing Test department performs the initial factory calibration. Return
the device to Measurement Computing Corporation when calibration is required. The recommended calibration
interval is one year.
