NI SCXI-1193 3×1 Multiplexers
Each group of four channels (0:3, 4:7, 8:11, etc.) can be configured as independent, unterminated 3×1 multiplexers. Choose one channel as the "common," and route it to the other three channels.
For example, choosing CH0 as a 3×1 common, route CH1, CH2, and CH3 to it with the command options described in the following table and figure.
| Route | Connect / Disconnect Calls Connection List | Individual Relay Control |
|---|---|---|
| CH0-> CH1 | CH0->A0B0, A0B0->B0B1, B0B1->A1B1, A1B1->CH1 | Close KA0, KA1 Open KB0, KB1 |
| CH0-> CH2 | CH0->A0B0, A0B0->B0B1C0, B0B1C0->C0C1, C0C1->B2B3C1, B2B3C1->A2B2, A2B2->CH2 | Close KA0, KB0, KA2, KB2 Open KB1*, KB3*, KC0, KC1 |
| CH0-> CH3 | CH0->A0B0, A0B0->B0B1C0, B0B1C0->C0C1, C0C1->B2B3C1, B2B3C1->A3B3, A3B3->CH3 | Close KA0, KB0, KA3, KB3
Open KB1*, KB2* KC0, KC1 |
| *Switch unused relays away from the signal path to improve high-frequency performance. |
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The NI PXI-2593 can be configured as quad 3×1 multiplexers using its 16 channels. The COM terminals are unused.
The SCXI-1193 has 32 channels that can be divided into eight 3×1 multiplexers. Additionally, the four COM terminals can route together creating a ninth 3×1 multiplexer, as shown in the following figure:
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