26 Channel Multiplexer for the DMM-261

The DNA/DNR/DNF-MUX-461 provides 26 two-wire or 13 four-wire multiplexers for the DNx-DMM-261 DMM board. All connections are made inside the Cube or RACKtangle, so the only connections you need to make are to the various channels on the board. Up to five of the boards may be daisy chained within the Cube/RACK chassis, providing up to 130 two-wire or 65 four-wire channels in a single chassis. Larger systems are possible, though will require the DMM-261 to MUX-461 interconnection external to the chassis itself.

The MUX-461 boards are designed for use in a wide variety of switching and digital control applications. Each channel is capable of switching voltages up to ±170 VDC or AC, and is rated for continuous operation at 500 mA DC or AC rms with a switch resistance of less than 0.5 Ω (not including external cables).

The relays are rated for 1 million operations at @ 24VDC/50 mA or 12 VDC/100 mA. A counter built into the board counts the number of switch cycles for each relay, so the age of the contacts can be tracked. All relays default to “open” on power up/reset. Switching rates up to 500 Hz are supported. Each board provides 350 VDC isolation between channels, and between the board, cube and other installed I/O boards.

A digital trigger input is provided at the I/O connector and can be used to initiate channel switches. A digital trigger output provides the relay status (in transition or stable).

All field-wiring connections are made through a convenient 62- pin D connector, ensuring no problems obtaining mating cables or connectors. Users may also connect the DNx-MUX-461 boards to our popular DNA-STP-62 screw terminal panel via the DNA-CBL-62 cables. The cables are shielded and available in 1, 3, 10 and 20 foot lengths.

The DNx-MUX-461 series includes software drivers supporting all popular operating systems including: Windows, Linux, QNX, VXWorks, RTX, and other popular Real-Time Operating Systems. Windows users may take advantage or the powerful UEIDAQ Framework, which provides a simple and complete software interface to all popular Windows programming languages and data acquisition and control applications (e.g. LabVIEW, MATLAB).