Ratio - Agilent Technologies 3458A User Manual

RATIO

RATIO

Syntax
Remarks
Example
224 Chapter 6 Command Reference
The RATIO command instructs the multimeter to measure a DC reference voltage
W
applied to the Sense terminals and a signal voltage applied to the Input
terminals. The multimeter then computes the ratio as:
Signal Voltage
Ratio =
DC Reference Voltage
RATIO [control]
control
Numeric
control Query
Parameter Equiv.
OFF 0
ON 1
Power-on control = OFF.
Default control = ON.
•
W
The Sense LO and the Input LO terminals must have a common reference
and cannot have a voltage difference >0.25V.
•
The signal voltage can be measured using the DCV, ACV, or ACDCV
measurement function. (For ACV or ACDCV, any of the three measurement
methods ANA, RNDM, or SYNC may be used.) The multimeter always uses
DCV for the reference voltage measurement. The measurable reference voltage
range is ± 12VDC (autorange only). To specify ratio measurements, you first
select the measurement function (and the measurement method for ACV or
ACDCV) and then enable ratio measurements with the RATIO command (see
example below).
•
Query Command. The RATIO? query command returns the present ratio
mode. Refer to "Query Commands" near the front of this chapter for more
information.
•
Related Commands: ACDCV, ACV, DCV, SETACV
10 OUTPUT 722;"PRESET NORM"
20 OUTPUT 722;"ACV"
30 OUTPUT 722;"SETACV SYNC"
40 OUTPUT 722;"RATIO ON"
50 OUTPUT 722;"TRIG SGL"
Chapter 0:Command Reference
Description
Disables ratio measurements
Enables ratio measurements using the present
measurement function (DCV, ACV, or ACDCV)
!SUSPEND READINGS,NRDGS=1
!SELECT AC VOLTAGE MEASUREMENTS
!SYNCHRONOUS ACV MEASUREMENTS
!ENABLE RATIO MEASUREMENTS
!TRIGGER MEASUREMENT