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OP-8935
OP-8935, 8 Analog Inputs, 8 Analog Outputs, Analog I/O Module for SLSC
Actual item may vary if no part number is provided on quote request.
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Andrew Gar**** Verified Buyer
" Amazing to work with and had my order within 1 week after purchasing with all NI certs and data that were needed. "
March 2025
Said Sai**** Verified Buyer
" Competent contact for highly specialized components. The support team is very knowledgeable. Many thanks for the help and the fast shipping! "
January 2025
Bob C**** Verified Buyer
" Jason was able to get our emergency situation taken care of quickly and professionally. "
May 2025
Gregg Flecki**** Verified Buyer
" Great service and great products. This is my 2nd time using Apex Waves, truly impressed. "
January 2025
Carol Zimme**** Verified Buyer
" Very responsive and helpful, competitive pricing. Good source! "
July 2025
Andrew Gar**** Verified Buyer
" Amazing to work with and had my order within 1 week after purchasing with all NI certs and data that were needed. "
March 2025
Said Sai**** Verified Buyer
" Competent contact for highly specialized components. The support team is very knowledgeable. Many thanks for the help and the fast shipping! "
January 2025
Bob C**** Verified Buyer
" Jason was able to get our emergency situation taken care of quickly and professionally. "
May 2025
Gregg Flecki**** Verified Buyer
" Great service and great products. This is my 2nd time using Apex Waves, truly impressed. "
January 2025
National Instruments OP-8935 Analog I/O Module
The National Instruments OP-8935 Analog I/O Module, a versatile switch load signal conditioning (SLSC) module, provides eight analog inputs and eight analog outputs, each having a ±20 V range. The OP-8935's onboard fault insertion capabilities, which are designed to work with PXI or CompactRIO hardware, increase its usefulness in a range of testing and measurement applications. There are a total of 112 relays in the module's fault insertion unit (FIU), or seven relays for each differential pair. It is possible to control each relay separately, which makes comprehensive failure simulation possible. Fault injection using the two user-supplied voltage references (VBusA and VBusB) for each signal, as well as open-circuit and short-circuit situations for the signal pairs, are examples of potential faults.
All relays are open by default, preventing the creation of any unintentional signal paths. In order to avoid possible short circuits, the module's architecture makes sure that VBusA and VBusB cannot be connected to the same channel at the same time. Additionally, only one additional fault (either VBusA or VBusB) is permitted on a channel pair if Signal + and Signal - are shorted together. Because of its careful fault insertion methodology, the OP-8935 is a dependable instrument for demanding testing situations.
The OP-8935's relay technology provides quick response times of less than 0.5 milliseconds along with high density. Nevertheless, this technique is susceptible to peak currents above 5 amps, which may cause the relays to malfunction. Customers are recommended to install resistors to limit peak current in order to reduce this risk, particularly in light of the capacitors at the output that may produce current spikes. These capacitors can result in peak currents that exceed internal restrictions even when the power supply is limited to 0.1A, therefore careful circuit design is required.
An RMA can be sent out for repair if a relay fails in the short mode. Alternatively, a defective relay may only need to be replaced once by a technician who possesses IPC-610 certification and through-hole lead-free soldering knowledge. The OP-8935 is an essential part for testing and validating analog signals in complicated systems because of its built-in protections and strong fault insertion capabilities.
| Model | OP-8935 |
|---|---|
| Part Number(s) | 787857-01 |
| Part Type | Analog I/O Module for SLSC |
| Channel Count | 8 analog inputs, 8 analog outputs |
| Voltage Range | ±20 V |
| Fault Insertion | 112 relays for fault simulation |
| Relay Response Time | <0.5 milliseconds |
| Embedded Protections | Current limits, non-simultaneous relay closure |
| Compatibility | PXI or CompactRIO |
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