6-48
Section 6: 9100 System Operation — SCPI Language
Final Width = 215mm
6.6.4.24
[SOUR]:TEMP:PRT:NRESistance(?)
<DNPD>
Purpose
The system defaults to provide parameters which simulate a platinum-resistance thermometer whose 0
°
C nominal value is 100
Ω
.
The nominal value can be adjusted between 10
Ω
and 2k
Ω
to match the nominal 0
°
C value of the simulated thermometer. This
command is invalid unless PRT function is programmed.
The
TEMP:PRT:NRES
command is used to adjust the 0
°
C nominal resistance parameter in the 9100 system (refer to the
Programming Example after paras 6.6.4.25).
<DNPD>
The 'decimal numeric program data' is a number which sets the required 0
°
C nominal value. It must be expressed as a decimal value
in Ohms which is the same as that of the 0
°
C nominal value for the simulated thermometer
The value of
<DNPD>
, in conjunction with the '
UNIT
', '
SCAL
' and '
TYPE
' commands, will automatically adjust the software
parameters for the PRT resistance output defined by the
PRT [:LEVE][:IMM][:AMPL] <DNPD>
command.
For details of local operation and parameter limitations, refer to Volume 1, Section 4, Sub-Section 4.15 (RTD Temperature).
Response to Query Version
The instrument will return a number which is the value of the presently-programmed 0
°
C nominal value. The returned number will
be in standard scientific format (for example: 200
Ω
would be returned as
2.0E2
).
6.6.4.25
[SOUR]:TEMP:PRT:UUT_I(?)
<CPD>{LOW|HIGH|SUPer}
Purpose
In the synthesized resistance technology used for RTD simulation in the 9100, the current sourced from the UUT must fall within
certain spans of values for each commanded temperature value. For UUTs producing source currents which are larger than the
values in the 'Low' (default) span, the greater current can be accommodated by selecting 'HIGH' or 'SUPER'.
The
TEMP:PRT:UUT_I {LOW|HIGH|SUPer}
command is used to switch between the three current configurations (refer
to the Programming Example below). There is no default setting.
<CPD>
The 'character program data' performs the required action. Refer to Volume 1, Section 4, paras 4.15.4.7, for a description of the
current limits and output voltage limitation.
•
LOW
will select the UUT source current 'Low' limits.
•
HIGH
will select the UUT source current 'High' limits.
•
SUPer
will select the UUT source current 'Super' limits.
Response to Query Version
The 9100 will return either
LOW
,
HIGH
or
SUP
, dependent on the active limits selection.
Programming Example: To ensure the setup of a required Type, Temperature, Nominal Resistance and Source Current use:
:TEMP:PRT 270;:TYPE PT392;:NRES 1E3;:UUT_I HIGH<nl>
