Tektronix 2230, Service Manual

Page: 330 / 483

TEST WAVEFORM AND VOLTAGE SETUPS
WAVEFORM MEASUREMENTS
O n th e le ft-h a n d p a g e s preceding the sch em atic
d ia g ra m s a re te s t w a v e fo rm illustrations th a t a re intended
to aid in tro ubleshoo ting th e instrum ent. T o test the instru­
m e n t for th e s e w a v e fo rm s , m a k e the initial control settings
a s follow s:
Vertical (Both Channels)
P O S IT IO N
V E R T IC A L M O D E
X -Y
B W L IM IT
V O L T S /D IV
V O L T S /D IV V a ria b le
IN V E R T
A C -G N D -D C
M id ra n g e
C H 1
O ff (bu tto n out)
O n (button in)
1 V
C A L d e te n t
O ff (bu tto n out)
D C
Storage
S T O R E /N O N S T O R E
S A V E /C O N T IN U E
P R E T R IG /P O S T T R IG
R O L L /S C A N
1 K /4 K
P O S IT IO N C U R S /
S E L E C T W A V E F O R M
W A V E F O R M
R E F E R E N C E
N O N S T O R E (bu tto n out)
C O N T IN U E (bu tto n out)
P O S T T R IG (b u tto n out)
S C A N (button out)
4 K (button out)
P O S IT IO N C U R S
(button in)
W A V E F O R M
R E F E R E N C E (b u tto n in)
C h a n g e s to the control setting s for specific w a v e fo rm s
a re noted a t th e beginning o f each s e t o f w a v e fo rm s . Input
signals and ho o k u p s required are also indicated, If n ee ded,
for each s et o f w a v e fo rm s . V o lta g e m e a s u re m e n ts a re
m ad e w ith a I X pro b e unless o th erw ise noted.
Horizontal
P O S IT IO N (M idrange )
H O R IZ O N T A L M O D E A
A S E C /D IV 0 .5 ms
S E C /D IV V a ria b le C A L d e te n t
X I 0 M a g n ifie r O ff (k n o b In)
A TRIGGER
V A R H O L D O F F
M o d e
S L O P E
L E V E L
H F R E J E C T
A & B I N T
A S O U R C E
A E X T C O U P L IN G
N O R M
P -P A U T O
O U T
M idran ge
O F F
V E R T M O D E
IN T
A C
DC VOLTAGE MEASUREMENTS
Typ ical v o lta g e m easu re m en ts, lo c a te d o n the
sch em atic d iag ram , w e re obtained w ith the instru m ent
ope ra ting un d er the conditions specified in th e W a v e fo rm s
M e a s u re m e n ts setu p . C o ntrol-setting cha nges required for
specific v o ltag es a re indicated on each w a v e fo rm s page.
M e a s u re m e n ts a re referenced to chassis groun d w ith the
exc ep tio n of th e P rereg u lato r and In verter vo ltag es on
D ia g ra m 8 . T h e s e v o ltag es are referenced as Indicate d on
the sch em atic diagram .
RECOMMENDED TEST EQUIPMENT
T e s t e q u ip m e n t in T a b le 4-1 m eets th e required
specifications for testing this instrum ent.