Capacitance Simulation Card
Capacitive fuel sensor emulation for NI-SLSC
The SET-1220 can be driven through the RTI or through the SLSC chassis via software. RTI inputs are compatible with LVCMOS, LVTTL and TTL logic levels, have low leakage current and offer 24 SPI channels. They are grouped into four by six channels with common clock and slave select signals.
Each emulation channel has its individual enable input to physically disconnect the current output via a relay. A second relay allows to short circuit the emulation input/output. This feature can be used for failure injection and DUT calibration.
Following points have to be observed while using this card:
- The positive terminal shall be connected to the excitation output of the DUT
- The negative terminal is the output of a current source and shall be connected to a virtual GND referenced to the DUT GND
- Since the emulation utilizes a current source it requires a third terminal that is connected to the DUT GND
- In contrast to a real capacitor does the emulation put a fixed impedance of 1nF in series to 1.5KΩ onto the DUT
- The output resistance of the DUT does not compromise the emulation quality
The SET-1220 does not emulate all physical aspects of a real capacitor and cannot be used to emulate its DC characteristics. The main focus is set on replication of the phase shift between voltage and current over a wide range of capacitance values and a broad frequency bandwidth.
|Max. Voltage||Any Input/Output, relative to DGND||±60V|
|Max. Drive Input AC Voltage||Measured between DRV_Px and COM_Px||±15Vpeak||AC content above 400Hz|
|Max. Drive Input DC Offset||Measured between DRV_Px and COM_Px||±25VDC|
|Typ. Drive Input Impedance||1nF + 1.5kΩ|
|Max. Sense Output Current||±1.02mApeak|
|Emulated Capacitance Range||10pF to 800pF|
|Accuracy of Emulated Capacitance / Current||TBD|
|Operational Drive Input Voltage Range||Measured between DRV_Px and COM_Px||5Vpk to 15Vpk|
|Drive Input Frequency Range||2kHz to 13.5kHz|
|Typical Sense Output Phase Error||TBD|
|Typical Sense Output Noise||TBD|
|Max. DUT output resistance||1kΩ|
|Output Settling Time||< 50µs|
|Module dimensions||Excluding ejector||144.32mm x 30.48mm x 302mm (H x W x D)||Standard SLSC card size|
|Front Panel Connector||2x female DB -44 high-density D-Sub with 4-40 UNC screw lock||For mating connectors and cables, see below|
|RTI Connector||2mm hard metric per IEC 61076-101||Any RTI marked|
|Operating humidity||Relative, non-condensing||10%-90%|
|Storage humidity||Relative, non-condensing||5%-95%|
|Operating temperature||Forced-air cooling from chassis||0°C-85°C|
- HiL Testing
- Aviation– fuel sensor emulation
You have questions? Our SLSC support team is always happy to answer your questions.
Just write an E-Mail to email@example.com or call +49 7522 916 87 600.