Tektronix 2221 - Page 150

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Appendix A - 2221 Operators
EXTERNAL Z - AXIS , PROBE ADJUST ,
EXTERNAL
CLOCK
, AND X - Y
PLOTTER
Equipment
Required
( see
Table A - 1
) :
Calibration
Generator ( Item
1 )
BNC Female - to - BNC - Female Connector ( Item 10 )
BNC T -
Connector
(
Item 11 )
Leveled Sine - Wave Generator ( Item 2 )
Pulse
Generator
(
Item
5 )
Digital Voltmeter ( Item 7 )
TWO 50 2 BNC Cables ( Item 8 )
50 2 BNC Termination ( Item 12 )
BNC Male - to - Tip Plug ( Item 16 )
10X Probe ( provided with instrument )
UU
บ
INITIAL CONTROL SETTINGS
PROCEDURE
STEPS
U 번
Vertical
j
Channel 1 POSITION
VERTICAL MODE
X -
Y
BW LIMIT
CH 1 VOLTS / DIV
CH 1
VOLTS / DIV Variable
Channel 1 AC - GND - DC
Midrange
CH 1
Off (
button
out )
Off (
button
out )
1 V
CAL detent
DC
1. Check External Z - Axis Operation
a . Connect the leveled sine - wave generator output via
a 50 2 cable and a T - connector to the CH 1 OR X input
connector
. Then
connect a 50
N cable and
a 50
termina
tion from the
T - connector
to the EXT Z
- AXIS INPUT con
nector on the rear panel .
1
b . Set the
generator
to
produce a 5 V
, 50 kHz
signal .
الا
Horizontal
Midrange
C.
CHECK
-
For noticeable
intensity
modulation .
The
positive
part
of the sine wave
should
be of lower
intensity
than the
negative
part
.
20
us
POSITION
SEC
/
DIV
SEC / DIV Variable
X10
Magnifier
CAL
detent
Off (
knob
in )
d . Disconnect
the test
equipment from the
instrument .
Trigger
2.
Check
Probe
Adjust
Operation
a .
Set :
VAR
HOLDOFF
Mode
SLOPE
LEVEL
HF REJECT
INT
SOURCE
NORM
P - P AUTO
OUT
Midrange
OFF
VERT MODE
INT
10 mV
CH 1 VOLTS / DIV
SEC
/
DIV
C
C
C
0.5
ms
b . Connect the 10x Probe to the CH 1 OR X input
connector and
insert the probe
tip into the
PROBE
ADJUST
jack
on the
instrument front panel . If
necessary
,
adjust the probe compensation for a flat - topped square
wave
display
.
Storage
STORE
/ NON -
STORE
SAVE / CONT
TRIG POS
C. CHECK - Display
amplitude
is 4.75 to 5.25
divisions
.
NON
-
STORE (
button
out
)
CONT
POSTTRIGGER
( power
-
up
default )
OFF ( power - up default )
ON (
power - up
default
)
DIS
ON /
OFF
VECTORS ON / OFF
d . Disconnect the probe from the instrument .
C
A - 18
1