Crt, Power And Display - Tektronix 2247A Operator's Manual

I I
111
11
11
Controls, Connectors, and Indicators
CRT, Power, and Display
Refer to Figure 2-1 for location of items 1 through 9.
0
0
®
0
®
®
0
®
POWER Switch-Turns on or off instrument power. Press for ON or
OFF. '
At least one VERTICAL MODE button will light when the power is
turned on . The front-panel setup existing when the power is turned off
will return when the power is turned on again.
A INTEN Control-Adjusts the brightness of the A trace .
B INTEN Control-Adjusts the brightness of the B Delayed sweep
trace and the intensified zone on the A trace.
FOCUS Control-Adjust~ the focus of the crt displays (traces,
readout, and cursors) . .
TRACE ROTATION Control-Aligns the crt trace with the horizontal _
graticule lines. This is a screwdriver adjustment.
READOUT Control-Adjusts the brightness of the crt reado_fJt display
(Includes all alphanumerics and cursors). '
SCALE ILLUM Control-Adjusts the illumination level of the
graticule.
NOTE
Life of the graticule illumination lamps can be increased by
setting the SCALE ILLUM control for the· minimum intensity
needed for viewing , and turning off scale illumination when
not needed .
BEAM FIND Button-Locates off-screen and overscanned displays
when the button is held in. Limits the vertical and horizontal deflection
within the display area and unblanks the CRT.
2247 A Operators
2-1