I.C.E Supertester 680 R - Page 30

The
ends
of
scale
of the ohms
ranges
d0
not
coincide,
especiaily
the
ox10
range,
which
just
reaches
the 10%
of
the
end
oiscale.
FAUI_TY
VATUE
576
o
lf
interrupted
no
reading
on
the.ranges_
5
A,-
500
mA,
Ox
l,
e.x
10.
The
500 pA
and
50
pA
ranges
show
the
same
sensitivity_ai
_so
pe ena
oi
iCie.'
nerce
movemeni
ii'tir'e
enu ot
ranges
show
the
same
sensitivity;i
-5:0
!,c
gfu
;i;;rt.:'ii;r;;
r;i;*;;[
if
tiI.'#rii
:iii.?",1:ii,,:1. .:11q::
g.T.l0g,'ox,100d.
,
v,lq
#!;;
i,i
;iil;-;1";ii"z""
#p',i.
rf
scale
.for.
th.e
ranges
e
x 100,
-
O
x
sn0rtctrcuited,
reading
faulty
by
909
faulty
by
g0%
on the
S00
pd
range
inA- ry
rO"Z.-;,
ifi;'
fd
,i
range.
Reading
in
excess
of
approx.
LO/"
tor
ait
ilf
reririifiine
nip;.';;;.;;
FAULIY
VATUE
5760
o
lf
interrupted
n_o
reading
for
the
ranges
5 A,
500
mA,
50 mA,
5
mA,
500
u.A
f,lx
1,
Ox
10,
9lJ-0_9t,_thg,s9
gA
r.ange
shows
thisame
sensitivity
oi-end
of
scafe
as d6 ,/i"-'"
ox
100;
the
50
rrA ranee srrows
tre"sare
i.riiiiiiiy'##['ri
#i.X4t"ir.
lf
shortcifcuited
ihe Am-n"r" ransac rra rartrrnart hrr E +i-^^
^^
If
shortcircuited
the
Amoere
langgs
are
reduced
by'5'ii;;
; il;;
rriirli.
iO
pA
range
Ill.l^i'" :lllg.q..J..-.1,09.
u,r,
,"ric9g!r1e
-Jn-.-itii,lty
rri
tire-
oriii,i
raruei"exlJpt*?or
*re
w'ru'rr
u,a,geo
r0 ruu
r,^' txcessive
sensitivity
for
the
ohms
ranges
excepi-for
Ox
1000
range,
which
just
reaches
+/tO
of ttre-end
oiscate.
FAUTTY
VATUE
5.6
I(O
SEMI.FIXED
2,2
I(,
RHEOSIAT
rr tnterrupted
no
reading
for
all A.c.
ranges.
It
shortcircuited
no
reading
for
all the
A.d.
ranges.
tAUtIY
VATUE
5800
o
lf interruped
no
readins
on
the
2
V A.C.
range.and
on the
ohms
ranges
in
A.C.
lf
shortc.ircuited,
considlrable..errors
in
excesT
in'inJ'Z'V
A.C.
range.
Noticeable
reading
errors
on
the
scile
Oii-ooo in n.c.
'
FAUI.TY
VAI.UE
1045
rT
lf interrupted,
considerable
errors
in-excess
in
the
2
V A.C.
range.
lf
shortcircuited,
no
reading
on
the
2
V n.b.
ran!e.-
' "'
FAULTY
VATUE
1600
C)
lf
inlerrupted.,
no
reading_
when
the
Ampere
ranges
are
doubled.
rr
sn0nctrcutled
reading
in
excess
when
the doubling
operati0n
is
carried
out.
54
rAulTY
VALUE 3200
O
tt rillrrrrupted,
reading
in excess
when
the volt
Ampere
ranges
are doubled'
It ',t'rrrtciicuted,
no
reading
during
the above
operations.
fAUtTY
VALUET Germanium
rectifier
diodes
in
points
10 and
11
(see
diagram
on
page
73).
/\
t,rult
in
these
puts
A.C.
ranges
out of action
except
ior the
2
v A.c.
range and
the
ohms
i
trr:riI in A.C.
TAULTY
VAIUE: Germanium
rectifier
diodes
in
points
26 and
27
(see
diagram
on
page
73).
illIrvcnes only during
the doubling
operation
and
if faulty
causes
faults
in the
A.C.
r
rrr.uit
AV
x
2,
I^ULTY VAIUE: Silicone
protection
diodes.
il[,s0
are in
parallel
with the
moving
coil
.
of
the
instrument.
check
with an
ohmmeter
lrr,lwcen
points
6
and
8.