The NI TB-2606 provides screw-terminal connections and routing for two-wire matrix configurations of the PXI-2501 and PXI-2503 switch modules.
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Key product information and technical features.
The TB-2606 is a connection accessory for matrix switching rather than a standalone acquisition module. NI identifies it as the front-mounted terminal block for the 2501 and 2503 matrix configuration.
For larger matrices, NI documents direct wiring between TB-2606 terminal blocks. Matrix expansion requires row or column connections; the analog bus connectors cannot perform this expansion.
Verified product specifications.
| Manufacturer part number | 777879-01 |
|---|---|
| Matrix topology | Two-wire matrix; product overview states 6 × 4, while NI compatibility documentation states 4 × 6 |
| Analog bus connectors | 2 connectors |
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Manufacturer
Host switch modules
Front-mounted matrix terminal block
NI lists TB-2606, part number 777879-01, as the front-mounted terminal block for 2501 and 2503 modules in the 4 × 6 matrix configuration.
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Product-specific answers based on available technical information.
NI lists the TB-2606 for the 2501 and 2503 matrix topology. The product overview specifically identifies PXI-2501 and PXI-2503.
No. NI specifies direct wiring between terminal blocks. Connecting the rows of two modules forms a 4 × 12 matrix; connecting the columns of three modules forms a 12 × 6 matrix.