Operating Instructions - Tektronix 7603 Operator's Manual

General
To effectively use the 7603, the o
p
eratio n and capa-
bilities of the inst ru me nt must be kn own . T his section
d escr ibes the operation of the f ront- and rea r-p anel co ntrols
and connecto rs and gives si mp lified a
n d general op e r ati n g
info rmation .
O
p
erating
V
oltage
T his instrument is design e d for operation f rom α
power source with
its neutral at or near earth
(ground) potential with
α separate safety-eart h
conductor . It
i
s not intended fo r operation f rom two
ph ases of α mult ί-ph ase system, or across t he legs of α
single-phase, three-wire system .
T he 7603 can be operated from either α 110-volt or α
220-volt
n
ominal line-voltage source, In a
dd
ition, th ree
operating ranges can be selected with in each nominal line
voltage source . The voltage-selecto r ju m per on the
R
ectifier
board (see Fig. 1-1) allows selectio n of the o perating
voltage. To co nve rt the instru ment from one
r
egulating
ra nge to anot her, fi rst
d
isconnect the instrume nt from the
p
ower source . Then, slid e out the
p
ower un it as
d
escribed
in the Mai n tenance sectio n.
R
emove the voltage-selecto r
ju mper
a
n
d
r
e-install it on the set of pins whic h re prese nt
the desire
d
r
eg u lating ra nge . Select α ra nge w h ic h is
centered about the average li n e voltage to wh ic h
t
he
i nst rument is to
b e connected (see Table 1-1) .
TA BLE 1-1
R
eg ulating
R
ange and Fu se Data
Un grounded (L ine) Brown Blac k
G
r ounded ( N eut ral) Bl ue Wh ite
Pi ns
R
egulating
R
ange
G
roun
d
ing (E arthing) G ree n-Yellow G reen-Yellow
Selecte
d
110-volts
n
ominal 220-volts
n
ominal
L
OW
ME D
Hl
L
ine Fu se
REV. D, OCT. 1976
O PER
ATI
N
G I
N
ST
RU
CTIO
N
S
PREL I M I NA R Y I NF ORM ATIO N
W
A RN I N G
90 to 110 volts
99 to 121 volts
108 to 132 volts
3 .2 Α slow-b low
180 to 220 volts
198 to 242 volts
218 to 262
v
olts
1 .6 Α slow-b low
Sectio n 1-7603/R 7603 Operators
Powe r Co rd Co nd uctor Identificatio n
Cond uctor Ι Colo r
Fig . 1-1 . Locations of voltage-selector ju mper, spare jumpe r, and
A
LT FU SE in power unit (7603 shown) .
To co nvert from 110-volts to 220-volts
n
ominal li ne
voltage, or vice ve rsa,
r
em ove the voltage-selector ju mper
and replace it with
t
he spare ju mper (sto red on pi ns
adj acent to voltage selector area) . T he ju mpers are colo r-
cod ed to ind icate the
n
ominal voltage for wh ich
t
hey are
inte nd ed ; brow n fo r 110-volt nomi nal o
p
eratio n
a
nd red for
220-volt nomi nal operatio n . Change the li ne fuse to
p
rovi
d
e
p
rotection fo r
t
he selected nomi nal li ne voltage. Use the
fuse located in
t
he A LT FU SE hol
d
er on the
R
ectifier
b
oard (see Fig. 1-1) or see Table 1-1 for value. Also, c hange
the li ne-co rd p l ug to matc h
t
he
p
ower-source
r
eceptacle or
use α suitab le a dapte r .
Alte rn ate Color
T
he 7603 is
d
esigne d to
b
e used with α
t
hr ee-wire AC
p
ower system . If α
t
hree- to two-wire a
d
apte r is
u
sed to
co nn ect this instrument to α two-wire AC
p
ower system, be