9-4
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Section Topics
2308-900-01 Rev. A / July 2008
Section 9: Measurement Commands and Optimizing Measurement Speed
Model 2308 Portable Device Battery/Charger Simulator User’s Manual
reading array is sent to the computer when the power supply is addressed to talk. The averaged
reading is displayed on the front panel. The front panel does not show an array of readings, only
the average of an array. All
:READ
commands apply to the presently selected function.
The number of readings to average or put in an array is set using the
:SENSe:AVERage
(for
voltage, current and DVM readings) or
:SENSe:PCURrent:AVERage
(for pulse-current
readings) command. See
Section 2
and
Section 3
for details.
:READ[1]:AMP?
Switch to 5A range, and then take a
measurement on battery channel (#1).
:READ[1]:HUNDred?
Switch to 500mA range, and then take a
measurement on battery channel (#1).
:READ[1]:FIFTy?
Switch to 50mA range, and then take a
measurement on battery channel (#1).
:READ[1]:FIVE?
Switch to 5 mA range, and then take a
measurement on battery channel (#1).
The
:READ[1]:AMP?
,
:READ[1]:HUNDred?
, :
READ[1]:FIFTy?
,
and
:READ[1]:FIVE?
commands
only apply to the battery channel. First, the command will change range as indicated
by command, if needed. Then, the command will take a measurement on the selected function.
These commands do not change the function to current. The setting of function remains
unchanged. Therefore, make sure the function is set correctly before using these commands. If
needed, use the
SENS:FUNC
command to switch to the desired function.
NOTE
1.
READ?
and
READ:ARRay?
readings are always sent in form indicated by
the
FORMat[:DATA]
setting.
2. There are no AVERage commands for long integration measurements.
The array size for long integration readings is fixed at one. Therefore,
both
READ?
and
READ:ARRay?
will return a single long integration
reading.
NOTE
If auto range is enabled on battery channel (#1), the
:READ[1]:AMP?
,
:READ[1]:HUNDred?
, :
READ[1]:FIFTy?
,
and
:READ[1]:FIVE?
commands will disable auto range.
While sending one of these commands, if the selected function is pulse current
and the pulse current step feature is enabled (ON), then a settings conflict error
message will be generated. To change current ranges when using the pulse
current function with step enabled, use the
SENS1:CURR:RANG
command to
change ranges, then send the
READ:ARR?
command to take the
measurements.
Summary of Contents for 2308
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