HP 3455A - Page 33

Model
3455A
Seclton 111
3-67.
The
following
data message
examples
illustrate
how to read or program the front panel
control of the
Table 3-5.
BINARY
PROGRAM Codes.
f irti BINARY
enOGRAM 0*u Byla
ControH AIfKtM. SCALE, %
ERROR. OFF IMATHl
To f
1
Pro«i*ni CoBc
ASCII
CHAR
DECIMAL
CODE
OFF ss
TERROR
•
61
SCALE
> 62
Second
BINARY PROGRAM 0>i< Bv<«
Control* AfftciM AUTO CAL. AUTO
RANGE. HIGH RESOLU
TION. HOLD/MANUAL.
EXTERNAL. INTERNAL
To Proflrtm
PROGRAM CODE
AUTO
AUTO
HIGH ASCII
1
DECIMAL
CAL
RANGE RESOLUTION
!
TRIGGER
CHAR
'
CODE
Oil Oil OH
HoM)/U»nu*l
SB
EkMrn«l
-
61
Innrnkl >
63
Oil
Oil On HoM/Mnuai 3
St
Ekt*m*l 6 S3
lni«rn*l 6
S4
Oil On OH
Hold/M»nutl
43
EABrnil
-
4S
46
Oil
On On
1
Hold/Mnnuil #
3S
ExtarA*!
% 37
Internal
B 38
On
Oil OH f^nuai/Hold
1
01
Extarnal
1
03
Internal 04
On on On
Manual/ Hole*
S 63
Enarnal
U SS
Internal V
86
On On
OH
Manual /Ho*d K 75
External M 77
Internal N 78
On On
On
M«nutl/Hola
C
67
EiTarna* E 60
Incernal F 70
TNva BINARY PROGRAM Ool* Bvie
Control*
AfIcciM’ 10 K, 1 K, 100. 10.
1,
I (RANGE)
To
Fro
9
ra«n
1
Pro^remCotfe
ASCII
CHAR
DECIMAL
CODE
to K
_
05
1 K
/
47
100 7 SS
to SB
1
•
61
1
> 62
Fourlh BINARY PROGRAM Oou
Bvtt
Conitoli AlloeiM TEST. 4 WIRE kO.
2
WIRE kO. FAST
ACV.
ACV, OCV IFUNCTIONI
To
Frogrem.
1
Profxm
Cod*
ASCII
CHAR
DECIMAL
CODE
TEST
_
05
4 WIRE kfl
/ 47
3 WIRE ktl
7 56
FAST ACV
S0
ACV
-
61
DCV
> 63
3455A. To read control status:
wrt 722.
“B”
Address
the
3455AIO
"listen"
Set the
345
SA to (he
BINARY PROGRAM
mode
Since
normally four
data bytes are used in
Binary pro-
gramming,
the
345SA may
indicate an SRQ
condition
when only a “B” is
sent.
red 722
Address the 3455A I
to
"talk”
The 3455A,
after
receiving the "talk”
command,
will out-
put the
front panel
control status
codes
(4
bytes).
As an
example, if
the front panel
controls
were in the
"turn-on”
state,
the 3455A would
output the
following codes:
N
MATH OFF
AUTO
CAL ON
AUTO
RANGE ON
HIGH
RESOLUTION OFF
INTERNAL
TRIGGER
>
1
DC
Volts
FUNCTION
1
Volt RANGE
(depends on input applied)
To
program front panel
controls:
wrt 722, "B
;K/
=
Address the
3455Ato
*
•listen”
Sei3455Ato
BINARY PROGRAM
mode
Desired program
codes (see
Table 3-5)
3-68. MMBurMMflt
Data. Measurement
data is
output by
the 3455A in
the
following general
format:
OUTPUT
FORMAT:
Polarity of
measurement
(does not
apply to
ACV
or
OHM measurements)
± nnnnPDDE
t ddcrlfCRLF
Terminates
message
Measurement reading I
expressed
in scientific
‘
notation
This
format is printed
in the
lower left
corner of
the
3455A front panel
for
convenience.
The following
is an
example of
a data
message output
by the
3455A: