Tech Note 530 Detail

ScienceWorkshop 750 interface (USB) stops communicating with the host computer.

Affected Products:

CI-7650 ScienceWorkshop 750 USB Interface

Problem/Symptom:
The ScienceWorkshop 750 interface (USB) stops communicating with the host computer.

PASCO Solution:

ScienceWorkshop 750 interface (USB) may be damaged after incorrectly connecting an analog sensor equipped with a 5-pin DIN connector.

The correct manner of connection is to align the key on the male connector with the keyway on the female connector. Both the key and the keyway must be oriented at the 12 o'clock position.

Incorrect connection is generally difficult, but sufficient applied force can overcome the keyway protection. Inadvertent misalignment of the connector in either a clockwise or counterclockwise direction may result in transmission of 12 V dc to the USB chip, which normally operates on 5 V dc. The USB chip will short and burn out, protecting the computer and other connected USB devices from the 12 V surge.

Common sensors that can be incorrectly connected are the voltage sensor (CI-6503), the current sensor (CI-6556), and other sensors with 5-pin DIN connectors.

Chief symptoms of lack of USB communication are: Nothing listed for the USB 750 in the Windows Device Manager (Apple System Profiler in Mac), or DataStudio reports that an interface is not connected.

Troubleshooting actions include:
  1. Disconnect all USB devices.
  2. Restart the computer.
  3. Reconnect the USB 750 and turn on its power.
  4. Check for proper USB communication.
If troubleshooting leads to the conclusion that the interface has failed in terms of USB communications, or if you continue to experience difficulty,please contact Technical Support

Creation Date: 06/6/2005
Last Modified: 06/6/2005
Mod Summary: