The National Instruments SCXI-1304 is an AC/DC configurable coupling terminal block with 22 screw terminals and BNC connectors, compatible with modules like SCXI-1140, SCXI-1141/1142/1143, and
The SCXI-1304 AC/DC Coupling Terminal Block, part number 777687-04, is a versatile accessory manufactured by National Instruments for use with various SCXI Series modules including the SCXI-1140, SCXI-1141/1142/1143, SCXI-1120/D, and SCXI-1125. This terminal block features 22 screw terminals and BNC connectors to facilitate easy signal connection and can be configured for AC or DC coupling on a per-channel basis, ensuring flexibility in signal integration.
It also allows for configurable signal ground referencing for each channel, enhancing its adaptability to different system setups. However, users should note that channel isolation specifications will not hold if bias resistors are engaged on certain modules, necessitating the switches to be set to the open or grounded position to maintain valid isolation.
The SCXI-1304 is engineered to operate within a temperature range of 0 to 50 °C and can be safely stored in conditions ranging from –20 to 70 °C, with a relative humidity tolerance of 10 to 90%, non-condensing. It adheres to stringent electrical safety standards, including IEC 61010-1, EN 61010-1, UL 3111-1, UL 61010B-1, and CAN/CSA C22.2 No. 1010.1, ensuring safe operation in a variety of environments. Despite its obsolete status announced by National Instruments, its robust design and compatibility with a range of modules make it a valuable component in many test and measurement setups.
Not valid with bias resistors in engaged setting on certain modules
Operating Temperature Range
0 to 50 °C
Storage Temperature Range
–20 to 70 °C
Relative Humidity
10 to 90% (non-condensing)
Electrical Safety Standards
IEC 61010-1, EN 61010-1, UL 3111-1, UL 61010B-1, CAN/CSA C22.2 No. 1010.1
Obsolete Status
Announced by National Instruments
Question 1: What are the operational temperature range and storage temperature limits for the SCXI-1304 AC/DC Coupling Terminal Block, and which standards does it comply with to ensure safe usage? Answer 1: When bias resistors are engaged on certain modules using the SCXI-1304 AC/DC Coupling Terminal Block, the channel isolation specifications will not be maintained, necessitating the switches to be set to the open or grounded position to preserve valid isolation.
Question 2: What are the consequences for channel isolation specifications when bias resistors are engaged on certain modules using the SCXI-1304 AC/DC Coupling Terminal Block? Answer 2: The SCXI-1304 AC/DC Coupling Terminal Block operates within a temperature range of 0 to 50 °C and can be stored in conditions ranging from -20 to 70 °C; it complies with safety standards IEC 61010-1, EN 61010-1, UL 3111-1, UL 61010B-1, and CAN/CSA C22.2 No. 1010.1.
Question 3: What are the operating and storage temperature ranges for the National Instruments SCXI-1304 AC/DC Coupling Terminal Block, and what safety standards does it comply with? Answer 3: The National Instruments SCXI-1304 AC/DC Coupling Terminal Block operates within a temperature range of 0 to 50 °C and can be stored in conditions ranging from –20 to 70 °C; it complies with safety standards IEC 61010-1, EN 61010-1, UL 3111-1, UL 61010B-1, and CAN/CSA C22.2 No. 1010.1.
Question 4: What are the benefits and limitations of using the SCXI-1304 AC/DC Coupling Terminal Block with various SCXI Series modules, and what environmental conditions can it safely operate within? Answer 4: The SCXI-1304 AC/DC Coupling Terminal Block operates within a temperature range of 0 to 50 °C and can be safely stored in conditions ranging from –20 to 70 °C, and it complies with electrical safety standards IEC 61010-1, EN 61010-1, UL 3111-1, UL 61010B-1, and CAN/CSA C22.2 No. 1010.1 to ensure safe
Question 5: What are the operating and storage temperature ranges for the SCXI-1304 AC/DC Coupling Terminal Block, and which safety standards does it comply with? Answer 5: The SCXI-1304 AC/DC Coupling Terminal Block benefits users with its versatility for use with multiple SCXI Series modules, featuring 22 screw terminals and BNC connectors for easy signal connection, the ability to configure for AC or DC coupling per channel, and adaptable signal ground referencing. However, it has limitations such as the inability to maintain channel isolation specifications when bias resistors are engaged on certain modules unless switches are set accordingly. It is designed to operate safely within environmental conditions of 0
