National Instruments 781687-01 PXI Module Multiplexer Terminal Block.

The part number 781687-01 from National Instruments is the identifying part number for the TB-2630B PXI Module Multiplexer Terminal Block. This multiplexer terminal block is built with configurable methods including the 1-wire 128 x 1 multiplexer, 1-wire dual 64 x 1 multiplexer, 1-wire quad 32 x 1 multiplexer, and 1-wire octal 16 x 1 multiplexer. This module supports a maximum switching voltage of 60 VDC, 30 VAC rms channel to channel, and channel to ground with a maximum current of 0.4 A per terminal and has a maximum switching power of 10 W. Its initial DC path resistance is less than 2 Ω, typical and as the module wears out its resistance is 3 Ω, typical.

This module supports input trigger lines that can be configured from 0 to 7 and has a minimum pulse width of 150 ns. Its front panel input voltage ranges from -0.5 V to +5.5 V ensuring reliable and effective operations of the module. While the destination output trigger lines can be configured from 0 to 7 with its programmable pulse width of 1 µs to 62 µs.

This 781687-01 module is designed to consume power of 4.2 W at 5 V and 1.2 W at 3.3 V. It has an LFH matrix of 50, 160 positions, a female front panel connector with a reed as a relay type. It is designed as 3U, one slot compatible with the PXI/cPCI module and its physical dimensions are 21.6 cm × 2.0 cm × 13.0 cm (8.5 × 0.8 × 5.1 in.) and weighs 266 g (9.4 oz).

This module is engineered to operate at an ambient temperature of 0 degrees Celsius to 55 degrees Celsius and a storage temperature of -40 degrees Celsius to 70 degrees Celsius. Its relative humidity is 5% to 85%, noncondensing, and can be mounted at a maximum altitude of 2000 meters with a pollution degree of 2. Its operational shocks are 30 g peak, half-sine, 11 ms pulse (Tested in accordance with IEC 60068-2-27 standard) while its random operating vibrations are 5 Hz to 500 Hz, 0.3 grms