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776572-26, 8 Channels, 250 V, 128 KHz, SCXI-1126 Frequency Input Module
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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
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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 776572-26 Frequency Input Module
Part Number 776572-26 is the identifying part number for the National Instruments SCXI-1126 Frequency Input Module. It is typically used in isolating frequency-generating sensors, and other analog and digital periodic signal sources. The module can be operated in either the parallel output mode or the multiplexed output mode. In parallel output mode, all eight channels of the 776572-26 connect in parallel to eight E series DAQ device channels. On the other hand, all eight channels can also be multiplexed into a single DAQ device channel.
The 776572-26 features 8 isolated input channels, each with ten selectable input frequency ranges from 250 Hz to 128 KHz. Likewise, each channel has four selectable, 4-pole lowpass filters with cutoff frequencies ranging from 1 Hz to 1 KHz. The minimum input pulse width supported by the module is 1.5 µs while the input signal amplitude may range from a minimum of ±50 mV to a maximum of ±250 V max. All the input channels CH<0..7> are protected against overvoltages up to 250 Vrms in the powered-on and powered-off state. Similarly, they also have output short-circuit protection for an indefinite duration.
The 776572-26 measures 6.8 by 8.0 in. in physical dimensions. For the I/O connection, it features a 50-pin male ribbon cable rear signal connector and a 32-pin male DIN C front connector. The recommended warm-up time for the module is 15 minutes while the calibration cycle is typically 1 year. The recommended temperature range for the operation of the 776572-26 is 0 °C to 50 °C at a relative humidity of up to 10% to 90% RH. Likewise, the device is only meant to be used within a maximum altitude of 2000m.
On the other hand, it can be stored between -20 to 70 °C. Note that the maximum working voltage between channel-to-channel and channel-to-earth is 250V and both fall under Measurement Category II. The device meets the following safety standards for electrical equipment for measurement, control, and laboratory use: EC 61010-1, EN 61010-1, UL 3111-1, UL 61010B-1, CAN/CSA C22.2 No. 1010.1.
| Part Number | 776572-26 |
|---|---|
| Model Name | SCXI-1126 |
| Part Type | Frequency Input Module |
| Number of Channels | 8 |
| Maximum Input Frequency | 128 KHz |
| Filter Cutoff Frequency Range | 1 Hz to 1 KHz |
| Maximum Input Amplitude | 250 V |
| I/O Connectors | 50-pin male ribbon cable rear connector and 32-pin male DIN C front I/O connector |
| Warm-up Time | 15 minutes |
| Calibration Cycle | 1 year |
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