Operating Instructions— 2215A Service
level difference is more than 10 times the VOLTS/DIV
switch setting:
1. Set the Input Coupling switch to GND.
2. Insert the probe tip into the oscilloscope GND connec
tor and wait several seconds for the input coupling capacitor
to discharge.
3. Connect the probe tip to the signal source and wait
several seconds for the input coupling capacitor to charge.
4. Set the Input Coupling switch to AC. The display will
remain on the screen, and the ac component of the signal
can be measured in the normal manner.
OPERATOR’S ADJUSTMENTS
INTRODUCTION
Horizontal
To verify the operation and accuracy of your instrument
before making measurements, perform the following
adjustment procedures. Adjustments beyond the scope of
"Operator’s
Adjustments”
are
in
the
“Adjustment
Procedure” Section 5 of this manual.
Before proceeding with these instructions, refer to
"Preparation for Use” in this section for first-time start-up
considerations.
A/B SWP SEP
POSITION
HORIZONTAL MODE
A and B SEC/DIV
SEC/DIV Variable
X I0 Magnifier
B DELAY TIME POSITION
Off midrange
Midrange
A
0.5 ms
CAL detent
Off (knob in)
Fully counterclockwise
B TRIGGER
SLOPE
OUT
LEVEL
Fully clockwise
Verify that the POWER switch is OFF (push button out),
then plug the power cord into the power-source outlet.
BASELINE TRACE
A TRIGGER
VAR HOLDOFF
Mode
SLOPE
LEVEL
A&B INT
A SOURCE
A EXT COUPLING
NORM
P-P AUTO
OUT
Midrange
VERT MODE
INT
AC
First obtain a baseline trace, using the following
procedure.
1. Preset the instrument front-panel controls as follows:
Display
A and B INTENSITY
Fully counterclockwise
FOCUS
Midrange
2. Press in the POWER switch button (ON) and allow the
instrument to warm up (20 minutes is recommended for
maximum accuracy).
3. Adjust the A INTENSITY control for desired display
brightness.
Vertical (Both Channels)
POSITION
VERTICAL MODE
BW LIMIT
VOLTS/DIV
VOLTS/DIV Variable
INVERT
Input Coupling
Midrange
CH 1
Off (button out)
50 mV
CAL detent
Off (button out)
AC
4. Adjust the Vertical and Horizontal POSITION controls
as needed to center the trace on the screen.
TRACE ROTATION
Normally, the resulting trace will be parallel to the center
horizontal graticule line, and the Trace Rotation adjustment
2-9
Summary of Contents for 2215A
Page 1: ......
Page 9: ...2215A Service 4735 01 vi The 2215A Oscilloscope ...
Page 138: ...2215A Service 4735 04 Figure 9 4 Basic block diagram ...
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Page 145: ...CIRCUIT BCARD N TER CONNECTIONS 2 2 1 5 A 4755 20 ...
Page 153: ...2215A S e rv ic e D UJ o C D GO CO in 10 CJ Figure 9 8 Circuit view of A1 Main board ...
Page 157: ...1 p 2 m 3 p 4 p 5 P 6 p 7 p 8 p 9 A T B Z 2 I5 A ...
Page 158: ...H T J t K t L t M T N T p t S 4 7JS Z2 ...
Page 168: ...I 2 3 4 5 6 7 8 9 B H K L M N 2 2 I 5 A 473S Z ...
Page 173: ...I 2 to 3 to 4 to 5 to 6 7 to 8 to 9 2 215A B TIMING ALTERNATE B SWEEP S ...
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Page 181: ...I 2 3 4 5 6 7 8 9 AXIS CRT ...
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