Operating requirements

Before setting up your system, you should make sure that the operating environment is prepared.

Standard electrostatic precautions

This instrument contains static-sensitive components that are subject to damage from electrostatic discharge. Use standard ESD precautions when transporting, handling, or using the instrument and the target, when connecting/disconnecting the instrument and the target, and when removing the cover of the instrument.

We recommend that you use the following precautions:

Use wrist straps or heel bands with a 1 MW resistor connected to ground.
On the work surface and floor, use static conductive mats with a 1 MW resistor connected to ground.
Keep high static-producing items, such as non-ESD-approved plastics, tape and packaging foam, away from the instrument and the target.

The above precautions should be considered as minimum requirements for a static-controlled environment.

Electrical requirements

The USB TAP probe is powered through the USB cable and does not use an external power supply. It is designed to be plugged directly into a host computer, but also can work with self-powered hubs. Bus-powered hubs may be unable to provide sufficient power for the USB TAP probe, which requires 200 mA. If insufficient power is available, your host operating system will indicate this failure and the probe will go into a low power suspend mode. If your hub is not able to provide sufficient power, connect the USB TAP probe directly to your host PC, or purchase a self-powered USB hub.

Operating temperature

The USB TAP probe can operate in a temperature range of 0 to 40 °C (32 to 104 ºF).

Target requirements

The USB TAP probe automatically supports target signal levels from 1.8V to 3.3V.

Note: In the case of the Power Architecture, for the USB TAP probe to properly stop and restart a JTAG/COP target processor, the QACK signal must be pulled low. The USB TAP probe pulls this signal low through the JTAG/COP connector.