VXI VT1422A - Manual (Page 112)

110 Programming the VT1422A for Data Acquisition and Control Chapter 4
[SENSe:]FUNCtion:TEMPerature <type>,<sub_type>,[<range>,]
(@<ch_list>) for temperature measurements with thermocouples,
thermistors or RTDs
[SENSe:]FUNCtion:VOLTage <range>,(@<ch_list>) for voltage
measurements
[SENSe:]FUNCtion:CUSTom <range>,(@<ch_list>) for custom EU
conversions.
NOTE
At power-on and after *RST, the default EU Conversion is autorange
voltage for all 64 channels.
Linking Voltage
Measurements
To link channels to the voltage conversion send the
[SENSe:]FUNCtion:VOLTage [<range>,] (@<ch_list>) command.
•
The <ch_list> parameter specifies which channels to link to the
voltage EU conversion.
•
The optional <range> parameter can be used to choose a fixed A/D
range. Valid values are: 0.0625, 0.25, 1, 4, 16, or AUTO. When not
specified, the module uses auto-range (AUTO).
To set channels 0 through 15 to measure voltage using auto-range, send:
SENS:FUNC:VOLT AUTO,(@100:115)
SENS:FUNC:VOLT AUTO,(@10000:10131)
first 64 RSCU channels
To set channels 16 and 24 to the 16 volt range and 32 through 47 to the
0.0625 volt range, send:
SENS:FUNC:VOLT 16,(@116,124)
SENS:FUNC:VOLT .0625,(@132:147)
must send a command per range
or send both commands in a single command message:
SENS:FUNC:VOLT 16,(@116,124);VOLT .0625,(@123:147)
NOTE
When using manual range in combination with amplifier SCPs, the EU
conversion will try to return readings which reflect the value of the input
signal. However, it is up to the user to choose range values that will provide
good measurement performance (avoiding over-ranges and selecting ranges
that provide good resolution based on the input signal). In general,
measurements can be made at full speed using auto-range. Auto-range will
choose the optimum A/D range for the amplified signal level.