Home » GM 6.5 » GM/Detroit 6.5L – TECH 1 “SCAN” TOOL – SNAPSHOT OPTIONS


After selecting Snapshot from the Test Mode menu, a lof Snapshot options will appear on the Tech 1 displ(figures 6-32 and 6-33). These options, explained beloallow you to select the conditions or circumstances thdefine data capture, storage, and retrieval.
• FO: Any Code — This option causes a snapshot to trigger any time a Diagnostic Trouble Code is detected in the data entering the Tech 1.
• F1: Single Code — This option allows you to identify a specific code that will trigger a snapshot. Any code other than the one identified will not cause a snap­ shot to occur.
• F2: Manual Trigger — This option allows you to manually trigger the snapshot. After selecting Manual Trigger, you can press the F9, Enter, or Exit keys to begin recording data.
• F3: Replay Data — This option allows you to replay snapshot data that is already stored in the Tech 1 memory.
• F4: Fast Data — This option allows the Tech 1 to capture the data stream at a faster rate than normal (8 samples per second versus the normal 5 samples per second). Because data is being received at a faster rate, the duration of the snap­ shot under Fast Data will be shorter than normal.
• F9: Trigger Point — This option allows you to designate when the trigger point occurs. After selecting this option, three choices are available (figure 6-34):
• FO: Beginning — places the trigger point at the first data parameter stored. All other recorded data will have occurred after (downstream of) the trigger point.
• F1: Center — places the trigger point in the center of total stored data. This feature requires that enough data be stored to fill the Tech 1 memory completely. This is the most common form of snapshot.
• F2: End of Data — places the trigger point at the end of the recorded data All data occurring up to (upstream of) the trigger point will be stored in memory.


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