USbee operate NOTES

1. ALWAYS connect at least one GND line to your circuits ground

Calibration

When you are ready to calibrate the USBee AX Pod, plug in the pod
and run either the Oscilloscope or the Mixed Signal Oscilloscope
application. Then go to the menu item Setup | Calibrate. You will be
asked to confirm that you really want to do the calibration. If so,
press Yes, otherwise press No. Then follow these steps:
• Connect the CH1 signal to the GND signal using the test leads and
press OK. A measurement will be taken.
• Connect the CH2 signal to the GND signal using the test leads and
press OK. A measurement will be taken.
• Connect the GND signal to the ground and the CH1 signal to the
positive connection of the External Voltage Source using the test
leads and press OK. A measurement will be taken.
• With the Multimeter, measure the actual voltage between the GND
signal and the CH1 signal and enter this value in the dialog box.
• Connect the GND signal to the ground and the CH2 signal to the
positive connection of the External Voltage Source using the test
leads and press OK. A measurement will be taken.
• With the Multimeter, measure the actual voltage between the GND
signal and the CH2 signal and enter this value in the dialog box.
• The calibration is now complete. The calibration values have been
saved inside the pod.

Logic Analyzer

• Connect the GND pin on the USBee AX pod to one of the signal
wires using the small socket on the end of the wire.
• Connect the other end of the wire to the Ground of your circuit you
would like to test. You can either use the socket to plug onto a
header post, or connect it to one of the mini-grabber clips and then
attach it to the Ground.
• Connect the Signal 0 thru Signal 7 lines pin on the USBee AX pod to
one of the signal wires using the small socket on the end of the wire.
• Connect the other end of the wire to your circuit you would like to
test.
• Run the Logic Analyzer Application.

The Logic Analyzer uses a Trigger mechanism to allow you to capture
just the data that you want to see.
You can specify the digital states for any of the 8 signals that must be
present on the digital lines before it will trigger.

Async Serial Decoder

• Connect the GND pin on the USBee AX pod to one of the signal
wires using the small socket on the end of the wire.
• Connect the other end of the wire to the Ground of your circuit you
would like to test. You can either use the socket to plug onto a
header post, or connect it to one of the mini-grabber clips and then
attach it to the Ground.
• Connect the Signal 0 pin on the USBee AX pod to your circuit Async
line.
• Run the Logic Analyzer Application.
• Press the Run Button when your Async bus is running.
• Position the X and O (or X1 and X2) cursors at the beginning and
end of where you want to decode.
• Press View | Async Decoder in the menu.
• Select the correct Async line in the dropdown boxes, enter the baud
rate, select the bit order and data bits/parity.
• Press the Decode Button.
• The Text Box will be filled with the decoded bus data.