[SENSe:]FUNCtion:RESistance
[SENSe:]FUNCtion:RESistance <
excite_current
>,[<
range
>,](@<
ch_list
>)
links the
EU conversion type for resistance and range with the channels specified by
<
ch_list
>
.
Parameters
Parameter
Name
Parameter
Type
Range of
Values
Default
Units
<
excite_current
>
discrete (string)
30E-6 | 488E-6 | MIN | MAX
Amps
<
range
>
numeric (float32)
.0625 | .25 | 1 | 4 | 16
(See Comments below)
VDC
<
ch_list
>
channel list (string)
100 - 163
none
Comments
•
The
<
range
>
parameter: The HP E1413 has five ranges: .0625 VDC, .25 VDC,
1 VDC, 4 VDC, and 16 VDC. To select a range, simply specify the range value
(for example, 4 selects the 4 VDC range). If you specify a value larger than one of
the first four ranges, the HP E1413 selects the next higher range (for example, 4.1
selects the 16 VDC range). Specifying a value larger than 16 generates Error -222,
“ Data out of range” . Specifying
0
selects the lowest range (.0625 VDC). Specifying
AUTO
selects autorange. The default range (no range parameter specified) is
autorange. Autorange is not allowed while
SENSe:FILTer:LPASs:STATe
is
ON
.
Error +3072, “ Autorange not allowed with SENSE:FILTER on” will be generated at
INITiate:IMMediate
time if the filter is
ON
and any channel specifies autorange.
<
range
>
may be specified in millivollts (mv).
•
If you are using amplifier SCPs, you should set them first and keep their settings
in mind when specifying a range setting. For instance, if your expected signal
voltage is to be approximately .1VDC and the amplifier SCP for that channel has
a gain of 8, you must set
<
range
>
no lower than 1 VDC or an input out-of-range
condition will exist.
•
Resistance measurements require the use of Current Source Signal Conditioning
Plug-ons.
•
The
<
excite_current
>
parameter (excitation current) does not control the current
applied to the channel to be measured. The
<
excite_current
>
parameter only
passes the setting of the SCP supplying current to channel to be measured. The
current must have already been set using the
OUTPut:CURRent:AMPLitude
command. The choices for
<
excite_current
>
are
30E-6
(or
MIN
) and
488E-6
(or
MAX
).
<
excite_current
>
may be specified in milliamps (ma) and microamps (ua).
•
The
*CAL?
command calibrates resistance channels based on Current Source SCP
and Sense Amplifier SCP setup at the time of execution. If SCP settings are
changed, those channels are no longer calibrated.
*CAL?
must be executed again.
•
This command will cause Error +3000, “ illegal while initiated” if trigger is initiated.
•
See “ Linking Channels to EU Conversion” in Chapter 3 for more information.
•
Related Commands:
OUTPut:CURRent:AMPLitude
,
*CAL?
[SENSe:]
240 HP E1313/E1413 Command Reference
Chapter 5
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