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16.2.5 Second Level Modifier Commands
DELTA <NRF> Selects the Delta % function and optionally sets the reference value; if no
reference value is specified the existing value is used. The percentage
deviation shows in the secondary display.
DELTA? Returns the Delta % value. The syntax of the response is:
<ASCII data><RMT>
Where <ASCII data> is a character string divided into two fields (value
followed by %) exactly as for the standard READ? Response; see that
command section for details.
If Delta% is greater than 999.99% the response value will be
<OVFLOW>; if
the Delta% function is not running the response value will be zero.
LIMITS
<NRF>,<NRF>
Selects the Limits function and optionally sets the limits (LO, HI); if no
reference is specified the existing value is used. PASS, LO or HI is shown
in the secondary display.
LIMITS? Returns the result of the latest Limits comparison.
The syntax of the response is:
<ASCII data><RMT>
W
here <ASCII data> is either
PASS, LOW, HIGH, or OFF.PASS indicates that the reading was between or equal to one (or both) of
the limits.
LOW indicates that the reading was less than the LO set limit.
HIGH indicates that the reading was above the HI set limit.
OFF indicates that the Limits function was not running.
MMON Starts the Min-Max recording mode, initially setting Min and Max to the
same value. If Min-Max mode is already running, Min and Max are reset to
the same value and recording starts again.
MM? Returns the recorded Min and Max values.
The syntax of the response is:
<ASCII data for M
in><ASCII data for Max
><RMT>
Where each <ASCII data> is a character string divided into two fields (value
followed by units) exactly as for the standard READ? response; see that
command section for details. The two character strings are separated by 2
spaces.
AXB
<NRF>,<NRF>
Starts the Ax+b scaling function and optionally sets the A and b parameters;
if A and b are not sent the existing values are used.
AXB? Returns the result of the Ax+b scaling function.
The syntax of the response is:
<ASCII data><RMT>
Where each <ASCII data> is a character string in the same format as the first
(value) field of the standard READ? response; see that command section
for details. If Ax+b is not running a zero value will be returned.
WATTS
<NRF> Selects the Watts function and optionally sets the reference impedance; if
no impedance is specified the existing value is used. Vac or Vdc must have
been specified in the main display; Watts shows in the secondary display.
WATTS? Returns the result of the Watts calculation.
The syntax of the response is:
<ASCII data><RMT>
Where <ASCII data> is a character string divided into two fields (value
followed by units) exactly as for the standard READ? response; see that
command section for details. If the Watts function is not running a zero
value will be returned.
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