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Timing Analysis
Pod 3 of the USB Analysis Probe contains signals that
describe in more detail the actual state of the USB
wire.
Installation Quick
Reference
The following procedure describes the major steps
required to perform timing analysis measurements
with the USB Analysis Probe module.
1. After removing the probe tip assemblies, plug
logic analyzer header 3 into Analysis Probe
header 3.
2. Plug the USB Analysis Probe IN cable to the
upstream Host or Hub. The USB Analysis
Probe OUT connector can be connected down
stream to either a Hub or device or it can be
left unconnected.
3. Position the LOW SPEED ONLY switch to the
ON position (LED lit) if the USB Analysis Probe
is on a low speed only segment. Position the
LOW SPEED ONLY switch to the off position
(led doused) if the USB Analysis Probe is on a
full speed link.
4. Turn on the logic analyzer so that the VCC and
READY LEDs on the USB Analysis Probe are
lit.
NOTE: Connect the USB Analysis Probe to the
USB wire as described in step 2 prior to powering
up the logic analyzer.
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