5Ć12
CAUTION
To prevent accidental loss of calibration, be sure the calibration
lockout jumper (J205) is in place. If J205 is not in place, erroneous
calibration constants can result if the calibration routine is accidenĆ
tally invoked and not properly completed.
One DC calibration generator (item 11), one preciĆ
sion coaxial cable (item 5), and one dualĆinput coupler (item 7).
Low Frequency Output Compensation adjustment and Self
Cal Horizontal adjustment procedures.
NOTE
To enable factory calibration on oscilloscopes with firmware version
2.10 or above, remove jumper J205 (CAL-DIS) on the CPU board.
(See Figure 5Ć17 on page 5Ć23 for the location of J205.) If you do
not remove this jumper, the message See manual to enable FactoĆ
ry Cal" appears when you select the factory calibration routine.
Firmware versions below
2.10 do not have the calibration lockout
feature and the factory calibration routine can still execute with J205
installed.
1. Press the button.
CAUTION
To avoid replacing the calibration constants with erroneous values,
be sure to complete all steps of this procedure after initiating the
calibration routine.
2. Select from the main menu.
3. Select , initiating the calibration routine.
The calibration routine displays user prompts onĆscreen throughout this
procedure.
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