Standard And Optional Facilities - Datron 4708 User Handbook Manual

standard
and
Optional
Facilities
DC
Voltage
Ranges
By
fitting
Option
10,
the instrument provides
DC
Voltage
calibration facilities in
eight decade ranges
from ±100|iV
to
±1000V.
100%
overrange
is
incorporated, except
on
the
±1000V
range
(see
page
3-3),
when
the output
is
limited
to
llOOV.
AC
Voltage
Ranges
By
fitting
Option 20, the instrument provides
AC
Voltage
calibration
facilities in
seven decade ranges from
ImV
to
1
000
V.
100%
overrange
is
incorporated, except
on
the
1000
V
range
(see
page
3-3),
when
the
output
is
limited to
1
lOOV.
Resolution
and Accuracy
The
maximum
resolution
is
7.5 digits
with a
facility
for display-
ing the specified
accuracy of
any
output voltage.
The 4708
specifications are
shown
in
Section
6.
Resolution
and Accuracy
The
maximum
resolution
is
6.5 digits
with a
facility
for display-
ing the specified
accuracy of any output
voltage.
The 4708
specifications are
shown
in Section
6.
DC
Current
Ranges
By
fitting
Option
30, in
conjunction with
Option
10, the instru-
ment
can
be
used
to calibrate
DC
Current in five decade ranges
from
lOOpA
to
1
A.
The
Datron
Model 4600
may
be
used
to
extend
DC
Currents
to 11
A.
Resolution
and Accuracy
The
maximum
resolution
is
6.5
digits
with a
facility
for display-
ing
the specified
accuracy of output
current.
The 4708
speci-
fications are
shown
in
Section
6.
AC
Current
Ranges
By
fitting
Option
30,
in
conjunction with Option
20, the
instrument can be used
to
calibrate
AC
Current
in five
decade
ranges
from
1
00|iA
to
1
A.
The
Datron
Model 4600
may
be used
to
extend
AC
Currents
to 1 1
A.
Resolution
and Accuracy
The
maximum
resolution
is
6.5 digits
with a
facility
for
display-
ing the specified
accuracy of output
current.
The 4708
speci-
fications are
shown
in
Section
6.
Resistance
Resolution
and Accuracy
By
fitting
Option
30,
in
conjunction with
Option
10,
the
instru-
The
maximum
resolution
is
7.5 digits
with a
facility
for display-
ment
can be used
to calibrate resistance in eight
decade ranges
ing the specified
accuracy of any
output
resistance.
The 4708
from
10
ohm
to
lOOM
ohm. specifications are
shown
in
Section
6.
Frequency
The
output frequency of
the
4708
extends from
lOHz
to
IMHz
in five
overlapping decade
ranges, at
a
resolution
of
1%
of
nominal Frequency Range.
Any
five
frequency values within
the
range of the instrument
can be
stored
in volatile
memory.
For
higher accuracy,
five
'Spot Calibrated' frequency values per
Output
Range
can be
recalled
from
non-volatile
memory
stor-
age.
Autocal
All
Datron
AUTOCAL
instruments are
designed
to
make
the
removal
of
the
covers for calibration unnecessary, as
full
routine
calibration
of
all
ranges
and
functions
can be
carried out
from
the front
panel or over
the
IEEE
488
bus.
Accidental or unauthorized use of the calibration routine
is
prevented by
a
key operated switch
on
the
instrument
rear panel.
The
procedure
for calibrating
this
instrument
is
contained
in
Section
8.
Output
Deviation
A
user
may
deviate the ouq)ut voltage
from
the
output display
value
by
introducing
a gain
'Error'
within
the
general range
±10%.
Additionally, for
DC
functions, the
output
may
be
'offset'
by up
to
±2%
of the range
in use,
or 200|iV,
whichever
is
greater.
Remote Sense
The
specified output voltage
may
be
sensed
at
the load, using
4-
wire connections.
Remote
or
Local Sense
is
selectable
from
the
front panel.
Remote Guard
This
facility
allows
the
instrument's
internal
guard
shields to
be
externally connected.
1-2