Adjustment Procedures
Adjustment Procedure
Use this proced
uretoloadnewcalibrationconstants.
1. Enable the Service menu. (See page 42, Enable the Service Menu.)
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 a nd push the Service option button.
7. Push the Factory Cal option button.
8. Push the F
CAL INIT option button to initiate the factory calibration routine.
You are now in step 1 of the procedure.
9. As indic
ated by step 1, connect a 0.0 V
DC
source to the c hannel inputs. (See
Table 15.)
10. Press F
CAL STEP to load the calibration c onstant for step 1.
11. Follow the screen prompts and the A dju stment setup table for the remainder
of th e
routine, applying the proper signal for each step. (See Table 15.)
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 s tep 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 b y performing the self-calibration routine.
13. Disconnect all probes and cables from the channel input connectors.
14. Press the Utility button a nd 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 ServiceModeOffoption buttons.
44 TDS2000C and TDS1000C-EDU Series Oscilloscope Service Manual
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