Tektronix 434, Инструкция по эксплуатации

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C a lib ra tio n —43 4
F ig . 5 -8 . L o c a tio n o f C H 1 & C H 2 V O L T S / D I V s w itc h c o m p e n s a tio n a d ju s tm e n ts .
24. A d ju s t Channel 2 V O L T S /D IV S w itch C o m ­
pensation
a. Set the Channel 2 V O L T S /D IV sw itch to 10 m V , the
V e rtic a l M ode to CH 2, and th e CH 2 In p u t C o u p lin g to
DC.
b. C onnect the h ig h -a m p litu d e o u tp u t o f the Square-
Wave G enerator (T ype 106) to th e CH 2 in p u t c o n n e c to r
via a GR to BNC adapter, a 4 2 -in ch 50 £2 BNC cable, a 50
£2 BNC 10X a tte n u a to r, a 50 £2 BNC te rm in a tio n , and a 24
p ico fa ra d in p u t n o rm a lize r.
c. A d ju s t the o u tp u t o f th e Square-Wave G enerator fo r a
d isp la y five divisions in a m p litu d e and a re p e titio n rate o f
one k ilo h e rtz .
d. C H E C K —C R T d isp la y a t each Channel 2 V O L T S /
D IV s w itch p o s itio n fo r o p tim u m square co rn e r and fla t
to p . T y p ic a lly less th a n +2% , —2%, to ta l o f 2% peak to
peak a b e rra tio n (+3% , —3%, to ta l o f 3% peak to peak if the
m easurem ent is being made o u tside o f the + 2 0 ° C t o + 3 0 °C
te m p e ra tu re range). Remove th e 10X a tte n u a to r and th e 50
£2 BNC te rm in a tio n as necessary to m a in ta in a fiv e d iv is io n
d isp la y a m p litu d e .
e. A D J U S T —Channel 2 V O L T S /D IV s w itch com pensa­
tio n as given in Table 5-2. A d ju s t fo r o p tim u m square
c o rn e r and fla t to p . Remove th e 10X a tte n u a to r and 50 £2
BNC te rm in a tio n as necessary to m a in ta in a fiv e -d iv is io n
d is p la y a m p litu d e . Fig. 5-8 shows th e lo c a tio n o f the
variable co m p e n sa tio n adjustm ents.
f. D isco n n e ct all test e q u ip m e n t.
25. A d ju s t High Frequency C om pensation
a. C o n n ect th e positive-going fast-rise o u tp u t o f the
Square-Wave G enerator (T yp e 106) to th e CH 1 in p u t
c o n n e c to r via a GR to B N C ada p te r, a 4 2 -in ch 50 £2 BNC
cable, and a 50 £2 BNC te rm in a tio n .
b. Set the V e rtic a l M ode to CH 1 and b o th V O L T S /D IV
sw itches to 10 m V .
c. Set the Square-Wave G enerator fo r a six-d ivisio n
d isp la y w ith a re p e titio n rate o f 100 k ilo h e rtz .
d. A d ju s t the T R IG G E R L E V E L c o n tro l fo r a stable
d isp la y.
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