• Accuracy: < 0.1% F.S. • Excitation Voltage: 5 - 15 V DC • Full-Scale Deflection: < 0.3 mm • Selectable Range: 0.1 - 20 kN • Technology: Silicon Piezoresistive • Housing: Stainless Steel
- 304 stainless steel monolithic housing - Amplitude-frequency response up to 10,000 Hz - 10,000g shock resistance on any axis - Selectable measurement range: ±50g to ±500g - MEMS variable capacitance technology - Lightweight: 15g
Accuracy: ±0.02% span over the temperature range Response Time: 300 milliseconds or less Long-term Stability: ±100 ppm FS/year Measurement Range: 0-20 MPa (selectable) Sensing Technology: Silicon resonant sensor Overpressure Tolerance: 1.5 times the full-scale pressure
Product Overview
The TF85171 is a 6-channel precision programmable resistor module that takes the form of a standard PXIe bus. By using a precision switch network and software calibration technology, the TF85171 achieves multi-channel, high setting resolution, excellent stability, and accuracy. TF85171 adopts special switch technology to minimize the measurement error caused by thermoelectric electromotive force, so as to ensure high resistance precision of TF85171.
Each TF85171 module comprises six independent channels. Users can employ the six channels of TF85171 individually, or they can cascade several channels of TF85171 or multiple MT5171 modules by means of the four-wire method in order to satisfy the requirements for larger resistance or higher power. The TF85171 series is mainly used in the measurement that requires precision resistance sensors. TF85171 has the characteristics of a wide range and high precision. Users can select resistance modules of various resistance ranges and resolutions according to the needs of the test system for TF85171. The resistance channels of TF85171 are completely isolated from the ground plane to facilitate users to use TF85171 in different scenarios. Moreover, the resistance channels of TF85171 can be programmed to simulate short-circuit or open-circuit conditions to generate fault scenarios such as wiring or sensor failure.
Key Features
6 independent programmable channels
Resolution: 0.125Ω
Accuracy: ±0.2%±125mΩ@<300Ω / ±0.1%+125mΩ@≥300Ω
Resistance value: 3Ω to 1.51MΩ
Maximum power consumption supported per channel
Support for Windows/Linux and other operating systems with VISA-based DLL drivers for secondary development
Application Scenarios
Relevant Application Scenarios Requiring Precise Resistor Control
Integrated Circuit Testing
Semiconductor Automatic Test Equipment (ATE)
Consumer Electronics Functional Testing
Product Parameters
Basic Specifications | |||
Channel Scale | 6 | ||
Operating Temperature | 0℃ ~ +55℃ | Overall Dimensions | 3U |
Storage Temperature | -22℃ ~ +75℃ | Bus Type | PXIe |
General Characteristics | |||
Accuracy | ±0.2 % ±Resolution @ <300 Ω , ±0.1 % ±Resolution @ ≥300 Ω | ||
Programmable Range | 3Ω to1.51MΩ | Resolution | 0.125Ω |
Short-Circuit Resistance | <0.3Ω | Thermoelectric EMF | <6 μV |
Maximum Power Dissipation | 500mW | 3U PXIe internal Power | 3.3V/1A, 12V/1A |
Relay Operation Time | <3ms | Maximum Switching Voltage | 200V |
Open-Circuit Resistance | >10⁹Ω | Expected Life | >1x10⁸(10mA) |
| Calibration Configuration | |||
Digital Multimeter | A DMM with a minimum of 6.5 digits and four-wire measurement capability | ||
Wiring Method | Connect the DMM to the calibration port of TF85171 via the Kelvin four-wire method | ||
Principle Block Diagram
Mechanical Characteristics
It is a standard 3U PXIe single slot. The standard 3U PXIe single slot includes the following external interfaces:
a. PXIe connector: The PXIe connector of the standard 3U PXIe single slot is used to communicate with the PXIe host. This communication function of the PXIe connector ensures the standard 3U PXIe single slot can transmit data and instructions with the PXIe host smoothly.
b. Standard 37Pin D-Sub male connector: The standard 37Pin D-Sub male connector of the standard 3U PXIe single slot serves as the resistance channel interface.
Customizaiton
The functions and appearance of the TF85151 128-channel 1, 2, or 4-wire multiplexer switch module can be flexibly customized according to user requirements to meet the needs of different applications. Each customized product of the TF85151 128-channel 1, 2, or 4-wire multiplexer switch module will correspond to an independently filed product model, which facilitates users to place orders for the customized product of the TF85151 128-channel 1, 2, or 4-wire multiplexer switch module at any time.
FAQ
1. Q: What is the primary application of this programmable resistor module?
A: This device is mainly designed for simulating and testing sensor resistance changes. It delivers highly accurate resistance levels from 3Ω up to 1.51MΩ with a 0.125Ω step.
2. Q: Can the channels be combined to increase power or resistance?
A:Indeed! By using 4-wire leads, channels can be connected in series to obtain larger resistance values or to handle higher power levels than those of a single channel.
3. Q: How does the module help to keep the thermo EMF error low?
A: The module employs a special switching method to limit the generation of thermoelectric voltage to less than 6μV. Hence, it provides the possibility of performing extremely accurate low resistance measurement that is not distorted by thermal effect errors.
4. Q: What does the channel-to-ground isolation add to the device?
A: Total isolation is necessary for conducting floating resistance simulations and also for cutting out the ground loops. That is why the device is excellent for testing isolated sensor circuits and differential measurement systems.
5. Q: Can you explain the feature of fault simulation?
A: Each channel may be set to behave like an open or short circuit. Hence, the system can be tested for its response to wiring and sensor failure situations without the need for physically disconnecting the components.
