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HP 1630A User Manual

HP 1630A
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Using
HP-113 or
HP-IL
Interface
Model
1630A/D/G
The
first
way
to
interpret
the
remaining
number
is
to
use
the
floating
point
translation
which
can
be
generalized
as
:
(The
mantissa
is
always
a
fraction
less
than
one
.)
In this
case,
thebinary
point
is
assumed
left
of
byte
15
.
The
mantissa
could
thenbe
represented
in
decimal
as
follows
:
Byte
Position
:
Byte 15
Byte
16
Byte
17
Hexadecimal
:
9
8
0 0
0
0
Binary
:
1001
1000
0000 0000
0000
000
Decimal
:
(1X2-14)
+
(1X2-4)
+
(1X2-5)
=
.594
=
(MANTISSA)
Therefore,
the
equation
(MANTISSA)
X
2(EXPONENT)
reveals
:
Another
method
of
decoding
this
number
is
to
move
the
binary
point
to
the
right
the
samenumber
of
places
as
the
exponent
indicates
.
Then,
interpret
the
binary
number
directly
as
a
number
greater
than
one
as
indicated
below
.
Hexadecimal
:
9
8 0 0 0
0
Binary
:
.100
1
1
1000
0000
0000
0000
0000
9-
8
7
places
(MANTISSA)
X
2
(EXPONENT)
(
.594)
X
2(7)
=
76 runs
1001100=64+8+4=76
runs
1
X
2-5
1
X
2-4
1
X
2
-
14
The
exponent
is
a
7-bit
2's
complement
number,
therefore,
positive
value
exponents
are
not
required
to
be
converted
to
normal
binary
since
they
are
the
same
.
However,
a
negative
exponent
value
must
first
be
translated
to
normal
binary
representation
before
interpreting
the
exponent
as
a
negative
number
.
The
following
example
of
the
State
Time
Interval
Overview
Learn
String
parameter
for
Total
Time
demonstrates
a
negative
value
exponent
.
Parameter
:
Total
Accumulated
Time
(State
Time
Interval
Overview
Learn
String)
Byte
Position
:
18
19
20
21
Format
:
(R) (R)
(R) (R)
Hexadecimal
:
E8
98
91
5E

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HP 1630A Specifications

General IconGeneral
BrandHP
Model1630A
CategoryMeasuring Instruments
LanguageEnglish

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