Specifications

Notes 1. The OUTPut:CURRent:AMPLitude command is only for programming
excitation current used in resistance measurement configurations. It is does
not program output DAC SCPs like the VT1532A.
2. The VT1518A Current Measurement SCP is a combination of 4 channels of
current source (same as the VT1505A) and four channels of amplified
analog input (same as the VT1508A). The current source channels are on the
lower four channels of the VT1518A.
Setting the VT1511A
Strain Bridge SCP
Excitation Voltage
The VT1511A Strain Bridge Completion SCP has a programmable bridge
excitation voltage source. The command to control the excitation supply is
OUTPut:VOLTage:AMPLitude <amplitude>,(@<ch_list>)
·
The <amplitude> parameter can specify 0, 1, 2, 5, or 10 volts for the
VT1511’s excitation voltage.
·
The <ch_list> parameter specifies the SCP and bridge channel excitation
supply that will be programmed. There are four excitation supplies in each
VT1511A.
To set the excitation supplies for channels 40 through 43 to output 2 volts:
OUTP:VOLT:AMPL 2,(@140:143)
NOTE The OUTPut:VOLTage:AMPLitude command is only for programming excitation
voltage used measurement configurations. It is does not program output DAC SCPs
like the VT1531A and VT1537A.
Linking Channels to
EU Conversion
This step links each of the module’s channels to a specific measurement type. For
analog input channels this “tells” the on-board control processor which EU
conversion to apply to the value read on any channel. The processor is creating a
list of conversion types vs. channel numbers.
The commands for linking EU conversion to channels are:
[SENSe:]FUNCtion:RESistance <excite_current>,[<range>,](@<ch_list>) for
resistance measurements
[SENSe:]FUNCtion:STRain:<%-3>… <excite_current>,[<range>,](@<ch_list>) for
strain bridge measurements
[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.
Programming the VT1419A Multifunction
Plus
Setting Up Analog Input and Output Channels
58 Chapter 3
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