Average Mode Measurements (1071 Only) - Datron 1061A User Handbook Manual

Average
mode
measurements
(1071 only)
Pressing the 'Av'
key
activates
one
of
two averaging
modes:
'Continuous' or 'Block'.
With
DC
or kf2
functions
set,
selection
of
'Av'
extends
the display
to IVi digits
giving greater
resolution.
It
can
also
be selected for
other
functions,
but
without
increasing
the display
resolution.
Interlocks
in
Averaging
Modes
Setting
'Av
deselects auto-ranging, so overscale
readings cause
an error indication (Error
OL).
Conversely, setting 'Auto' deselects 'Av'.
When
'Input
Filter
is
selected in
combination
with
'Av', 'Ratio'
or 'Remote'; the analog input
filter is
connected
in circuit,
but the high resolution 'Rolling
Average'
mode
associated with
the
input
filter
key
is
not
selected.
Rolling,
Continuous,
and Block Average
modes
cannot be
selected
in 'Cal'
mode.
Entry into 'Cal'
mode
deselects
any
average
mode
set.
Choice
between
'Block
Size'
and
'Continuous'.
A
'Block'
is
a set
of consecutive measurements,
whose mean
value
is
calculated
and displayed by
the
instrument.
A
user
can
preselect
how many
measure-
ments
will
constitute a block,
by entering
a
number
(called the
'Block
Size')
via the front
panel keyboard.
The number
is
stored in
an
internal
memory,
but
it
also
has
a
second
use; to
determine
which
of
the
two
averaging
modes
will
be activated
by pressing'
A
v':
Block Size
=
0:
Continuous Average
Mode
Block Size
>
1:
Block Average
Mode
When
the 1071
is
powered on; the
block
size
is
initialized to
'O',
with
Average
OFF. Subsequent
selection of 'Av' will
thus activate
'Continuous'
mode.
Access
to
Block Size
memory.
A
user gains
access to
the
block
size
memory
to
inspect or adjust the stored
number, by using
the
front
panel 'Keyboard'
mode.
To
inspect the block
size:
Press
'KEYBOARD'
-
1071
enters
'Keyboard'
mode.
-
Display
=
'+0'
Press 'Av' -
Either 'Cont'
or
a
number
appears
on
the display.
If
'Conf
is
displayed, the 1071
is
set
for
Continuous
mode.
Otherwise, the
displayed
number
is
the
block
size
in
Block mode.
To
set
the block
size:
Press
'KEYBOARD'
-
1071 enters
'keyboard'
mode.
-
Display
=
'+0\
Enter block
size
required -
Display
=
Value
entered
(in
range 0
to
19999)
Press 'Store'
-
Store
LED
lights
green.
Press 'Av'
-
Block
size
is
set in
memory, and
the 1071
reverts to
its
previous
operation.
N.B.
By
entering
a
value of
0,
Continuous
mode
is
set;
any other value
sets
Block
mode.
3-6