Probe Cal
Reference
Figure 3-55: Probe Cal Menu and Gain Compensation Display
11. If the Probe
Offset Compensation message is displayed, continue with
step 15; otherwise, continue with step 12.
12. If the Compensation Error message is displayed, continue with step 13;
otherwise continue with step 18.
13. Press SHIFT UTILITY ➞ System (main) ➞ Diag/Err (pop-up) ➞ Error
Log (main). If there are too many error messages to be seen on screen,
rotate the general purpose knob clockwise to scroll to the last message.
14. Note the compensation error amount. Skip to step 19.
15. Disconnect the probe from any signal you may have connected it to.
Leave the probe installed on its channel.
16. Press OK Compensate Offset (side).
17. Wait for offset compensation to complete (one to three minutes).
When offset compensation completes, the following occurs:
The clock icon will disappear.
If offset compensation did not complete successfully, you may get the
message “Compensation Error.” This error implies that the probe
offset scale (10% error) and/or offset (50 mV) is too great to be
compensated. You can substitute another probe and continue. Have
your probe checked by service personnel. You can also check the
error log by doing steps 13 through 14.
18. After the clock icon is removed, verify the word Initialized changed to
Pass under Cal Probe in the main menu. (See Figure 3-55.)