Procedure to load new calibration constants
Use the following procedures to load the new calibration constants.
1. Enable the Service menu. Refer the section, Enable the service menu on
page 9 for the procedure.
2. Push the Service option button.
3. Push the Factory Cal option button.
4. Push the Warmup Timer option button.
5. Push the Start Timer option button to allow a 10-minute warm up. After
10 minutes, the oscilloscope displays a large black or green cross.
6. Press the front-panel Utility button and push the Service option button.
7. Push the Factory Cal option button.
8. Push the FCAL INIT option button to initiate the factory calibration routine.
You are now in step 1 of the procedure.
9. As indicated by step 1, connect a 0.0 V
DC
source to the channel inputs. Refer
Table 4: Adjustment steps on page 13.
10. Press FCAL STEP to load the calibration constant for step 1.
11. Follow the screen prompts and refer the Table 4: Adjustment steps on
page 13 for the remainder of the routine, applying the proper signal for
each step.
NOTE. During some steps, the oscilloscope may appear to be idle for several
minutes while it is processing information internally. You must wait for the
screen prompt to continue.
If any step in the procedure fails, the procedure terminates. Failure will result
if an incorrect signal source is connected. If this happens, you must start the
procedure over from the beginning.
If the procedure completes successfully, a "Pass" message is displayed and
the new adjustment takes effect.
12. Compensate the signal path by performing the self-calibration routine.
13. Disconnect all probes and cables from the channel input connectors.
14. Press the Utility button and select Do Self Cal to confirm that you are ready
to proceed.
15. Disable the Service menu option by pushing the Utility front-panel button
and the Service and Service Mode Off option buttons.
Adjustments
12 TBS1000C Series Oscilloscope Service Manual
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