Tektronix 2221 - Page 147

Appendix A
- 2221
Operators
TRIGGER
Dual - Input
Coupler
(
Item 9 )
Equipment
Required ( see Table
A - 1 ) :
Leveled Sine - Wave Generator ( Item 2 )
Low Frequency Generator ( Item 4 )
50 2 BNC
Cable ( Item 8
)
50 BNC
Termination ( Item 12 )
600 2 BNC
Termination ( Item 13 )
INITIAL CONTROL SETTINGS
PROCEDURE STEPS
Vertical
Л
П
П
Л
П
П
Л
П
1
}
П
1.
Check
Internal
Triggering
a . Connect the leveled sine - wave generator output via
a 50 12 cable and a 50 2 termination to the CH 1 OR X
input
connector
.
POSITION
(
both
)
Midrange
VERTICAL MODE
CH 1
XoY
Off
(
button
out )
BW LIMIT
Off (
button
out )
CH 1 VOLTS / DIV
5 mV
CH 2 VOLTS / DIV
50 mv
VOLTS / DIV Variable ( both ) CAL detent
INVERT
Off (
button
out )
AC
-
GND -
DC (
both )
DC
b . Set the
generator
to
produce a
10
MHz , 3.5 -
division
display .
C. Set the CH 1 VOLTS / DIV switch to 50 mV .
Horizontal
Midrange
d . CHECK - Stable display can be obtained by adjust
ing the TRIGGER LEVEL control for each switch combina
tion given
in
Table A
- 6 .
0.2
US
POSITION
SEC
/
DIV
SEC / DIV Variable
X10
Magnifier
CAL
detent
Off (
knob in )
Table A - 6
Switch Combinations for Triggering Checks
TRIGGER Mode
TRIGGER SLOPE
NORM
OUT
Trigger
VAR
HOLDOFF
Mode
SLOPE
LEVEL
HF REJECT
INT
SOURCE
EXT COUPLING
NORM
P.P
AUTO
OUT
Midrange
OFF
CH 1
INT
DC
NORM
IN
P - P AUTO IN
P - P AUTO
OUT
e .
Set
Storage
STORE / NON - STORE
SAVE /
CONT
TRIG POS
VERTICAL MODE
INT
1
П
Л
П
n
Л
CH 2
CH 2
NON -
STORE ( button out )
CONT
POSTTRIGGER
( power
- up
default )
OFF ( power - up default )
ON ( power - up
default )
DISPLAY ON / OFF
VECTORS ON / OFF
f . Move the cable from the CH 1 OR X input connector
to the CH 2 OR Y input connector .
A - 15