Tektronix 2221 - Page 136

Appendix A - 2221 Operators
u
VERTICAL
Equipment Required ( see Table A - 1 ) :
Calibration
Generator (
Item 1 )
Leveled Sine - Wave Generator ( Item 2 )
50 2
BNC Cable ( Item 8 )
Dual - Input Coupler ( Item 9 )
50 2
BNC Termination (
Item 12 )
10X
Attenuator
(
Item
14 )
INITIAL CONTROL SETTINGS
Vertical (
Both
Channels
)
POSITION
VERTICAL MODE
X - Y
BW LIMIT
VOLTS / DIV
VOLTS / DIV Variable
INVERT
AC - GND - DC
Midrange
CH 1
Off (
button
out
)
On (
button in )
2 mV
CAL detent
Off (
button
out )
DC
b . CHECK - Deflection accuracy is within the limits
given in Table A - 2 for each CH 1 VOLTS / DIV switch set
ting and corresponding standard - amplitude signal . When at
the 20 mV VOLTS / DIV switch setting , rotate the CH 1
VOLTS / DIV Variable control fully counterclockwise and
CHECK that the display decreases to 2 divisions or less .
Then return the CH 1 VOLTS / DIV Variable control to the
CAL detent and continue with the 50 mV check .
u
Horizontal
C. Move the cable from the CH 1 OR X input connector
to the CH 2 OR Y input connector . Set the VERTICAL
MODE switch to CH 2 .
u
Midrange
20
us
POSITION
SEC / DIV
SEC / DIV Variable
X10
Magnifier
CAL
detent
Off (
knob
in
)
d .
Repeat part
b using
the
Channel 2
controls
.
بال
Trigger
Table A - 2
u
Deflection Accuracy Limits
VAR HOLDOFF
Mode
SLOPE
LEVEL
HF REJECT
INT
SOURCE
EXT COUPLING
NORM
P.P AUTO
OUT
Midrange
OFF
VERT MODE
INT
AC
VOLTS
/ DIV
Switch
Setting
Standard
Amplitude
Signal
Accuracy
Limits
(
Divisions
)
2 mV 10
mV
4.90 to 5.10
Storage
5 mV 20
mV 3.92 to 4.08
STORE / NON - STORE
SAVE / CONT
TRIG POS
10 mv
50 mV 4.90
to
5.10
NON -
STORE (
button
out
)
CONT
POSTTRIGGER
(
power
- up
default )
OFF
(
power
-
up
default )
ON ( power - up default )
20 mV 0.1 V
4.90 to 5.10
50 mV 0.2 V
3.92 to 4.08
DISPLAY ON / OFF
VECTORS ON / OFF
0.1 V
0.5 V
4.90 to 5.10
0.2 V
1 V
4.90 to 5.10
PROCEDURE
STEPS
0.5 V
2 V
3.92 to 4.08
1. Check Deflection Accuracy and Variable Range 1 V
5 V
4.90 to 5.10
2 V
10 V
4.90 to
5.10
a .
Connect the
standard -
amplitude signal from
the
Calibration Generator via a 50 R cable to the CH 1 OR X
input connector
5 V 20 V
3.92 to 4.08
A
-
4
u