DI-2008 Hardware Manual
Introduction
1
1. Introduction
This manual contains information designed to familiarize you with the features and functions of the DI-2008 Voltage,
Thermocouple, and Pulse USB data acquisition system.
Features
The
DI-2008
data acquisition instrument is a portable data recording module that communicates through your com-
puter's USB port. Power is derived from the interface port so no external power is required. Features include:
•
8 fixed differential and isolated analog inputs protected to 120V rms.
•
7 digital I/O ports protected to +30V.
•
16-bit measurement resolution.
•
Per channel programmable measurement ranges of ±10, ±25, ±50, ±100, ±250, ±500mV; ±1, ±2.5, ±5, ±10, ±25,
±50 Volts or Thermocouple types J, K, T, B, R, S, E, and N.
•
Built-in cold junction compensation automatically enabled for any channel programmed as a thermocouple.
•
Sample rates from as high as 2 kHz (for a single channel) to as low as 1 sample every 2.5 hours.
•
A push-button to tag remote events in W
IN
D
AQ
software.
•
LED indication for easy notification of device status.
•
Free WinDaq/Lite provides access to all instrument features. WinDaq/Unlock required per instrument to operate
multiple units using ChannelStretch™*
•
ChannelStretch™ Technology allows you to sync up to 16 units (requires unlock code for each device)
•
Counter channel (terminal count of 65535).
•
Frequency channel (10 Hz to 50 kHz full scale across 12 programmable ranges).
•
15V excitation power supply output to power external sensors.
•
Included .Net Class supports programming the DI-2008 under any .Net programming language.*
•
Fully documented instrument protocol for programming the device in operating systems other than Windows.*
*ChannelStretch requires that each device be unlocked when used with WinDaq software. WinDaq unlock is not
required for ChannelStretch if programming devices using the .Net class or instrument protocol.
Analog Inputs
The DI-2008 features eight isolated differential channel inputs located on the sixteen-position screw terminal blocks
for easy connection and operation. Each channel can be programmed to acquire data as Voltage (±10, ±25, ±50, ±100,
±250, ±500mV; ±1, ±2.5, ±5, ±10, ±25, ±50 Volts) or Thermocouple temperature (types J, K, T, B, R, S, E, and N are
supported).
Utilize the functionality of W
IN
D
AQ
software to experience all the features encased in these small, inexpensive
instruments. Unlock code required to expand channel count using the ChannelStretch feature.
Digital I/O
The DI-2008 contains seven digital ports that may each be used as a general-purpose digital input or for a specific
function as designated on the device. Digital port D0 may be used for WinDaq Events; Digital port D1 may be used
for WinDaq remote Start/Stop; Digital port D2 may be used for rate measurements; Digital port D3 may be used for
