Tektronix 2247A Operator's Manual page 27

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Controls, Connectors, and Indicators
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NOTE
When the memory-backup battery is dead or has just been
replaced, the last measurement Is Initialized to I~ SEC
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power on. The battery must be replaced by a qua/if ied
service person.
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Measurement Select Buttons-Calls up Measurement selection
menus. Measurements are selected from the list of menu Items at
the right side of the menu display.
VOLTMETER CH1 /CH2-Displays the voltmeter menu . The selected
measurement mode Is shown by an underlined menu item. Tracking
cursors (measurement, ground, trigger level) may be displayed to
show the measurement points on the displayed signal ( see
CURSORS) .
CURSOR VOLTS-Calls up the menu for selecting cursor volts
measurement modes. The first page of the menu lets you select
positionable cursors; page 2 Is for selecting the auto-tracking
SmartCursors@.
TIME-Calls up the menu to select the type of timing measurement to
be made. Menu choices are listed on the right side of the screen .
COUNTER/TIMER-Calls up the menu to select the type of counter/
timer measurement to be made. Menu choices are listed on the right
side of the screen.
STORE/RECALL SETUP Button-Calls up store and recall menus
that let you store and recall up to 20 front-panel setups. When you
press the STORE/RECALL button, the STORE/RECALL menu
(factory settings default) or the RECALL ONLY menu Is displayed
depending on how you set the SERVICE mode CONFIGURE menu .
See "Service Menu Features" In Section 3 to set CONFIGURE menu .
AUTO SETUP Button-Press to automatically set up the front - panel
controls to produce a usable crt display. Setups are based on the
characteristics of the applied signals.
The voltage and frequency characteristics of the Input signal must be
within the limits of the 224 7 A specifications.
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2247 A Operators
Controls, Connectors, and Indicators
In addition, applied signals must be large enough to Insure a stable
trigger In NOISE REJECT at 2 mV/dlv and be within the dynamic range
of the vertical and trigger system at 5 V /div. The Input signal must be
DC or periodic within the frequency range of 50 Hz to 100 MHz.
Auto-setup action for each front-panel control Is shown In the
Appendix of this manual In Table A-1. In aclditlon to the action shown
In Table A - 1, any selected measurement Is re-Initialized as If It were
manually selected.
NOTE
MIN _SETUP as described below is only available on instru-
ments Serial Numbered B020100 or above.
MIN SETUP-Pushing and holding the Auto-Setup button until Instru-
ment operation returns enters the MIN SETUP function. This sets up
the front-panel controls as the Auto-Setup does but leaves many of
the controls unchanged from what the user has previously set. MIN
SETUP actlon for each front-panel control Is shown In Appendix A.
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2247A Operators
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