It offers eight analogue input channels, eight digital outputs, four digital inputs and two DACs. The hardware connects to PC-compatible computers via the popular USB interface, so setup is plug-and-play easy. The small size of the interface means that it requires very little bench space.

System Requirements

The WPI-118 requires a minimum Pentium II-level computer running Windows 98, ME, 2000 or XP with at least 64 megabytes of RAM, and at least 10 megabytes of free space on the hard drive. Internet connection is required for free automatic upgrades.

Key Hardware Features

Analogue Outputs

The 118 offers two +/- 10V Analogue Outputs (DACs). Each is independently programmable and can be synchronized with one another. Basic stimulus parameters for each DAC, such as pulse width, frequency and amplitude can be changed on the fly using handy controls located in the LabScribe software toolbar. Standard protocols include pulse, train, and step waveforms. Each standard protocol allows the quiescent state to be a holding voltage, thereby making it ideal for voltage clamping applications.

Resolution and Noise

The 118 employs a 16-bit A/D converter to sample data over its 10 Volt input range. Typical noise on any input is less than 1 millivolt. This allows the recording of signals from 10 mV to 10V without the need for additional external gain.

Digital Input/Output

Eight digital output lines are available. The digital output connectors are industry standard BNC, eliminating the need for custom cables. Programming the output lines is point-and-click easy as well, no complicated scripting language is required. Four digital input lines are also provided, with one configured as an external trigger.

Speed

The 118 is a fast recorder. At top speed it can collect 100,000, 16-bit samples per second on a single channel. With eight channels enabled it can collect data at 10,000 samples per second on each of the open channels.

USB Connection

Connection to the computer is accomplished over the popular USB port. This eliminates the need to install special interface cards and even makes the 118 compatible with notebook computers. The 118 has a small footprint, so it fits in even the tightest rack spaces.