Auto Se; Probe Low-Frequency Compensation - Tektronix 2247A Operator's Manual

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Operator Checks and Adj_ustments
Horizontal Controls
MODE
POSITION
X10 MAG
A SEC/DIV
SEC/DIV VAR
Trigger Controls
HOLDOFF
A/B SELECT
MODE
SOURCE
CPLG
Display
AINTEN
FOCUS
READOUT
SCALE ILLUM
MENU System Controls
MEASUREMENT MODES
I
TRACKING CURSORS
I
MENUS and
STORE/RECALL
A
Center the trace
Off
0.1 ms
Calibrated detent
MIN
A
AUTO LEVEL
VERT
DC
Desired brightness
Best trace definition
Desired brightness
Desired brightness
All off (Press
CLEAR DISPLAY
three times to
ensure all off. )
Auto Setup Function
The Auto Setup function can be used to automatically set up the front
panel controls to produce a usable display of the applied signal.
1 . Connect signal ( s) to be displayed to the appropriate Input
connector ( s) .
For triggering to be set up properly when the AUTO SETUP button I
pressed, connect the trigger-source signal to the lowest numbered
channel that will be turned on.
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2247 A Operators
I,
Operator Checks and Adjustments
2. Set:
VERTICAL MODE
Horizontal MODE
Vertical COUPLING
As desired ( see NOTE)
As desired
As desired
3. Press the AUTO SETUP button.
NOTE
Normally, the Auto Setup of the display is sufficient for
measurement purposes.
If
further waveform enhancement
Is needed, use the appropriate front-panel controls to
adjust the display. For Auto Setup acti-~n see Appendix A.
Trace Rotation Adjl;Jstment
1 . Perform the
0
"
Initial Setup" • p~ocedure. Position the trace vertically to
align It with the center horizontal graticule line and check that the trace
Is parallel with the graticule line.
NOTE
Normally, the trace will be parallel to the center horizontal
graticule line, and the TRACE ROTATION adjustment. 'f-lill
not be needed. '
2. If necessary, adjust the TRACE ROT A TION 'to make the baseline trace
parallel to the center horizontal graticule line. Use a small straight-blade
screwdriver or alignment tool.
Probe Low-Frequency Co'mpensation
Misadjustment of probe compensation Is a possible source of measurement
error. The attenuator probes are equipped with compensation adjustments.
To ensure the best measurement accuracy, always check probe com-
pensation before making measurements.
1 . Connect the two supplied 1 OX probes to the CH 1 and CH 2 BNC input
connectors.
2247 A Operators
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