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10.2.12 READ Group
The commands in the READ Group deal with the querying of the measured data. There are no front-panel keys that
correspond to the commands in this group.
:READ
?
:READ?
Function
Queries the measured data.
Syntax
:READ?
Response
<Measurement information>, <Data>
• <Measurement information> = <NR1> form,
register value in decimal notation (See the
figure below)
(The values inside the parentheses () are
those which exist when the measurement is
displayed in Ω.)
0:
No data
3 (131): Normal data (Comparator result: IN)
5 (133): Normal data (Comparator result: HI)
9 (137): Normal data (Comparator result: LO)
21:
Overrange (Comparator result:
fixed to HI)
37:
Contact check error (Comparator
result: fixed to HI)
69:
Abnormalities detected in the test
current (Comparator result: fixed to
HI)
• <Data> = <NR3> form
When the measurement display is set to %
[–]*.*****E+02 Mantissa: 5.5 digits maximum,
Exponent:02 (fixed)
When the measurement display is set to Ω
[–]*.*****E+** Mantissa: 5.5 digits maximum,
Exponent: depends on the measurement range.
When there are no data (Display "----")
9.91E+37 (NAN:Not A Number)
When overrange (Display "–oL–")
When contact check error (Display "–n.C–")
When abnormalities are detected in the test
current (Display "–c.F–")
9.9E+37
(INFinity:+∞)
Example
This is an example in which the measurement
information is ON ("
measurement information is OFF,
<Measurement information> and "," are not
output.
• During % display:
(Comparator result:IN) (0.987%)
• During % display:
(Comparator result:LO) (—5.012%)
• During Ω display:
(Comparator result:HI) (10.6135 MΩ)
• When there are no data:
• When the value is over the range:
READ?→21,9.9E+37
• When a contact check error occurs:
READ?→37,9.9E+37
IM 755601-01E
"). When the
:HEADer ON
READ?→3,0.00987E+02
READ?→9,—0.05012E+02
READ?→133,1.06135E+07
READ?→0,9.91E+37
• When abnormalities are detected in the test
current :
READ?→69,9.9E+37
Description
• The instrument stores the measured results
to the measurement data buffer every time a
measurement completes. "
query used to inquire about the contents of
the measurement data buffer. The buffer is
cleared when a query is made.
• When the "
:TRIGger:MODE
EXTernal or MANual, there are cases in
which the measurement data buffer is empty,
because the next measurement is not yet
complete. The response in this case
contains no data (<Measurement
information> is "0," <Data> is "9.91E+37").
• When the measurement is stopped and the
instrument switches to the SETUP mode
("
:MEASure OFF
buffer is cleared.
• You can determine whether or not the
measured result is stored in the measurement
data buffer by checking whether or not bit 0
(DAV) of the status register is set to "1."
• The <Data> condition and the comparator
results are included in the <Measurement
information>. The bit assignments of the
information are as follows:
7
6
5
4
3
OHM C.F
N.C
OVR LO
bit0 (DAV): Set to "1" when the measured data
are stored in the output buffer.
bit1 (IN):
Set to "1" when the comparator
result is "IN."
bit2 (HI):
Set to "1" when the comparator
result is "HI."
bit3 (LO):
Set to "1" when the comparator
result is "LO."
bit4 (OVR): Set to "1" when the measured
value is over the range. (Display
"–oL–")
bit5 (N.C):
Set to "1" when a contact check
error occurs. (Display "–n.C–")
bit6 (C.F):
Set to "1" when abnormalities are
detected in the test current.
(Display "–C.F–")
bit7 (OHM): Set to "1" when the measured data
are correct absolute (R) data.
10.2 Commands
" is a
:READ?
" is set to
"), the measurement data
2
1
0
HI
IN DAV
10-25
10
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