185949B-01
National Instruments
185949B-01
National Instruments
Description
185949B-01 is the SCXI-1338 8-Channel Current Input Terminal Block from National Instruments, designed for high-precision current measurements with 249 Ohm precision resistors. While declared obsolete, it is still available for purchase and repairs through companies like Apex Waves, offering NIST accredited calibrations with a recommended once a year accuracy check.
185949B-01 is a SCXI-1338 8-Channel Current Input Terminal Block manufactured by National Instruments. This terminal block is compatible with SCXI-1120, SCXI-1120D, SCXI-1125, or SCXI-1126 modules and is designed for high-precision current measurements. Each of the eight input channels is equipped with a 249 Ohm precision resistor, allowing for the reading of 0 to 20 mA or 4 to 20 mA current inputs. The terminal block features 18 screw terminals for easy signal connections, with eight pairs used for signal connection to module inputs and one pair linking to the SCXI chassis ground. Additionally, the SCXI-1338 can measure current and voltage sources, and can be calibrated for optimal performance. While officially declared obsolete by National Instruments, the SCXI-1338 Terminal Block is still available for purchase and repairs through companies like Apex Waves. It has a recommended operating temperature range of 0 to 50 °C, a storage temperature range of -20 to 70 °C, and a non-condensing relative humidity range of 10 to 90%. Calibration of the SCXI-1338 should be done at least once per year to maintain accuracy. Apex Waves offers NIST accredited calibrations for this terminal block with an average turnaround time of 1 to 2 weeks.
| Made By | National Instruments |
|---|---|
| Part Number | 185949B-01 (Referred to also as 777687-38 |
| Compatible Modules | SCXI-1120, SCXI-1120D, SCXI-1125, SCXI-1126 |
| Termination | 18 screw terminals with eight pairs for module inputs and one pair for SCXI chassis ground |
| Measurement Capability | Suitable for 0 to 20 mA or 4 to 20 mA current inputs |
| Physical Dimensions | 7.000 x 3.125 x 1.200 inches |
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Question:
What is the model number and function of the 185949B-01?
Answer:
The 185949B-01, also known as the SCXI-1338, is an 8-Channel Current Input Terminal Block manufactured by National Instruments for high-precision current measurements.
Question:
With which modules is the SCXI-1338 compatible?
Answer:
The SCXI-1338 is compatible with the SCXI-1120, SCXI-1120D, SCXI-1125, or SCXI-1126 modules.
Question:
How many input channels does the SCXI-1338 have and what special component do they feature?
Answer:
The SCXI-1338 has eight input channels, each equipped with a 249 Ohm precision resistor for reading current inputs.
Question:
What type of current inputs can the SCXI-1338 read, and how are signals connected?
Answer:
The SCXI-1338 can read 0 to 20 mA or 4 to 20 mA current inputs and features 18 screw terminals for easy signal connection to module inputs and SCXI chassis ground.
Question:
What are the temperature and humidity ranges for the SCXI-1338, and how often should it be calibrated?
Answer:
The recommended operating temperature range is 0 to 50 C, with a storage temperature range of -20 to 70 C, and a non-condensing relative humidity range of 10 to 90%. Calibration should be done at least once per year to maintain accuracy.