Tektronix 2247A Operator's Manual page 91

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Operators Familiarization
Self Cal Measurements
This selection does a self-characterization of the vertical channels 1 and 2
and the horizontal timing. The SELF CAL MEASUREMENTS routine stores
calibration constants that set the accuracy of the Internal measurement
system. Voltage or tlme measurements can be calibrated separately by
selecting the SELF CAL Item from the VOLTMETER or TIME Measurement
Menus.
NOTE
CALIBRATE MEASUREMENTS or SELF CAL can be
performed anytime after a 20-minute warmup to ensure the
accuracy stated in Section 6.
Internal Settings Menu
The INTERNAL SETTINGS MENU consists of MAKE FACTORY SETTINGS,
LOAD STORE/RECALL STORED SETUPS, and ADJUST VERTICAL
OUTPUT. All INTERNAL SETTINGS menu items, except ADJUST
VERTICAL OUTPUT, are for use by the operator. To return to the main
SERVICE MENU, press the up-arrow key to underline INTERNAL
SETTINGS MENU and press the button again to display the SERVICE
MENU. To return to the oscilloscope mode, select QUIT from the
INTERNAL SETTINGS MENU or SERVICE MENU, or press the CLEAR
DISPLAY button.
MAKE FACTORY SETTINGS—Sets the front-panel controls and
menu configurations as described In Appendix B.
INTERNAL SETTINGS MENU/
MAKE FACTORY SETTINGS: T MENU
LOAD STORE/RECALL SETUPS t
ADJUST VERTICAL OUTPUT
quit
Internal Settings Menu
2247A Operators 3-39