Teledyne LeCroy USB Protocol Suite User Manual (Voyager_Advisor T3_Mercury) - Manual (Page 273)

USB Protocol Suite User Manual 273
Recording Options‐Misc. USB 2.0 Teledyne LeCroy Corporation
10.3.2 Generator/Analyzer Clocking Overrides
Generator/Analyzer Clocking Overrides allows changes to be made to the Analyzer/
generator clocking. Select Slow Clock, then enter a value in the box on the right. The
value that is entered tells the Analyzer how much to divide the base clock by. For
example, entering a 4 causes Full Speed traffic to be generated at a 3‐megabit rate as
opposed to the standard 12‐megabit rate.
You can use the slow clock selection to slow down the base clock during generation. This
also changes the Analyzer’s clock base to match.
1. In the Misc. USB 2.0 tab, make sure you are out of Auto‐Detect mode.
2. Select the Slow Clock checkbox.
3. In the Divide By field, enter a value.
4. Click OK.
Note: Due to ASIC changes in the Voyager M3x design, slow speed generation and capture at Hi Speed
is NOT supported.
10.3.3 USB On-The-Go
USB On‐The‐Go option sets the Analyzer to record the USB On‐The‐Go traffic. This
protocol lets you run two devices, specify one of them as the host, one of them as the
device, and to assign each device a name.
10.3.4 Generator-related Parameters
You can set traffic generation parameters:
 Disable Generator Memory: Use the whole Capture Buffer for the trace. Not
applicable to Voyager M3x.
 Default to IntelliFrame Mode: Rather than Bitstream Mode.
 Device Emulation Mode: Limit tracing to Channel 0. You can check
Device Resumes, then set the Delay Time Before Resume (in milliseconds, from
1 to 65535) and Resume Time (in milliseconds, from 1 to 65535).
 You can set traffic generation parameters for the Device Address:
 Use Address in .utg file: The traffic generation file has an address.
 Emulated Device’s Hex Address (01‐3F): Enter the Mask and Match for the emu‐
lated device.
You can also enter the Host Chirp Reset Length (in milliseconds, from 1 to 69).
10.3.5 Data Truncation Option
 Truncate Data Fields (2.0): Allows data fields to be truncated during recording in
order to save Analyzer memory and allow recording of more packets. Enter a
minimum data length value in the Bytes box. The system truncates the data to
the stated value (or up to 5 bytes more to optimize operation efficiency in the
Analyzer hardware).