if
placed
in
a magnetic field
prcduced
by magnets,
transformers, impedences
etc.
The Test
Meter may therefore be used
even 0n metal and
steel surfaces urlthout the reading
being
altered. No other meter
provides
this facility.
A
special electrical circuit which,
together with a
static
limitor,
allows the Meier Movement
and associated rectifier
to be able to withstand
accidental or incorrect overloading
up io
1000 times above the range
setting.
Therefore
the instrument
does not need
to be returned so frequently to
specialised firms {0r
replacement of damaged rectifiers.
The other characteristics
and technical
qua!ities
that
put
this instrument in advance
of its
competitors are as follovrrs:
The
upper
panel
is in unbreakable
"CRYSTAL"
u,hich
all0w the maximurn use 0f the reading
face and completely
eiiminates shadow.
Special
electrical circuit t0
compensate for errors
due to the fluctuation 0f temperature.
Aniishock
instrument
with sp!'ung
suspensions. Container in new unbreakable material.
Resistance measurements
up
to 10 Megaohms direct with
supply oniy from the internal 3 V
battery, and up
to
i00
megaohms
with mains supply
(125
to 250 Volis).
Resistance measure-
ments
even
with
very low
values sirch as tenths of an 0hm, using an internal
3 V
battery.
ln addition, measurements
of very high resistance may
be made
(up
to 1000 MOhms) with d.c.,
using
the Resistance Measurement
Multiplier Model 25
(see
page
62).
D;rect
reacting 0f
frequency, capacity, output
power
and reactance detector.
Minimum
weight:
only
300
grams
including the
3 Volt battery fitted inside the analyser
container.
Absence
of rotating
sv,ritches increasing reliability
totally
eliminating
mechanical c0nlil't'.,
and reducing
the danger
0f accidentally
passing
from one range to another. To
changn
tnlr','
it is
only
necessary
to move one
probe
terminal,
which,
in
many
cases, is faster than
rolaltr,,
a switch,
and allowing the user to reflect on the type
and the measurement
rangp
L, r,,,
selected. Unnecessary overloads
and
errors with
damaging c0nsequences to
tlto
pll
lr,,
,t
circuit are also
eliminated.
0hms,
pF
and Hz adjustment
rheostat, with the serrated edge 0f the knob 0[
tlto
ltrrttt
-,,,.
2
and theref0re clearly visible
and
easily
adjustable even
when the analyser
is
in its
carry-
ing case.
iltri{
The
"Supertester
680 R"
is
a completely adaptable
instrument for
the discriminating radio
and electronic technician.
Because
of
iis
advanced
technical
characteristics and design it
has
been
covered by
patents
throughout the
world.
ln the
4Lh
serles 0f
this Silpertester 680 R,
the
prinied
circuit can be contpletely extracted
if
faulty.
See instructions
on
pages
39 and 40.
ldeasurEments that
ean be
elfected directly without the aid of any oti'lei
apparatus with the
patented
supefiester
LC.E. mod.
680 R:
1O FIE!"DS
{)F
MEASUREMENTS
AHO 80 RANGTS!!!
u0tTS A.C.
=
11 ranges:
2-10-50-250-1000-2500 Volts
and
4-20-180-500 and 2000 Volts
y0LTS
D.C.
:
13 ranges:
100 mV
-
2 V
-
10-50"200-500-1000
volts
20BmV
-
4y
-
20"100-400 and
2000 V0lts
AMP. D.C.
:12
ranges:
50pA
-
5C0rr,A
-
5mA
-
50mA
-
500mA
-
5
Amp. and
l8o pA
-
1 mA
-
18 mA
-
100
mA
-
't
Amp. and 10 Amp.
AirP. A.C.
=
lE ranges: 250
ir.A
-
2,5
mA
- 25 mA
-
250
mA
-
2,5 Arnp.
and
500pA
-
smA
-
50m4
-
500m4
-
5 Amp.
EHMS
=
6 ranges: x1
-
x10
-
x100
-
xi000
-
x10000 and
Low 0hms
AEACTANCE
DETECToR
:
1
range:
from 0 to
10
Megahoms
FREOUEI{CY
:
2 rafiges: from
0 to
500 and
from 0 to 5000 Hz.
Y. OUTPIJT
v0LTAGE
:
I rangesr 10-50-250-1000-2500 V and
20-100-500-2000
volts
DECIBELS
:
'!0
ranges; {rom
-24
to
*
70 db.
CAPACIIY
:
6 rangesr
from 0 to
50000
and from 0 to 500000
pF
using tne mains and
from 0 t0 20, fr0m 0 to
200,
from 0
to 2,000
and
from 0 to
20,000 Microfarad using the incorporated 3 V0lts
battery.
3
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