Keysight 44725A

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The HP 44725A 16-channel general purpose switch accessory provides 16 channels of moderate voltage level switching (up to 30 VDC or 42 V peak AC). Signals of up to 100 kHz can also be effectively switched because of excellent between-channel isolation.

The 44725A is an accessory for the 3852A data acquisition and control system. The 3852A is set up to handle many different transducer inputs including thermocouples, thermistors, RTDs, and strain gages, as well as being ready to measure dc volts, currents, resistances, pulse counts, frequencies, and more. The 3852A mainframe has eight (8) slots for plug-in function modules, and has provisions for extending the mainframe (the 3853A) for large systems requiring more plug-in cards.

The switches are all low noise, break-before-make, SPDT Form C relays. Each switch (one for each channel) can be individually programmed, with accessory memory holding the switch in its programmed state until actually reprogrammed.

At power-down, all switches return to the Normal Closed position.

• Vmax: 30V DC, 42 V Peak AC
• Imax: 1.5 A DC and RMS AC per channel
• Output status readback: Latches can be read back
• Response time: < 15 ms
• Switching rate: Limited to 3 per second to protect contacts