Resistance simulator module Highland Technology Inc

The V420 is an 8-channel, isolated, programmable resistance simulator. It uses entirely solid-state simulation to eliminate transient errors associated with relay switching, and provide for monotonic resistance changes. Channels are individually programmable in four resistance ranges, from 5 ohms to 65.5K on all ranges. Channels can operate from microvolts up to 24V / 50mA. Overload protection and channel error detection are included.

Any channel may be rerouted, under software control, to the front-panel calibration-check connector, allowing the board to be tested for calibration by a precision DVM without disturbing the connections to the equipment under test. The BIST option adds an onboard precision ohmmeter, allowing loopback checking and full automatic self-test. Optional external termination and bridge-completion boards are available.

Features Include:
- Eight channel, isolated, wide-range, 2/4 wire resistance simulator.

- Fast, monotonic, glitch-free resistance value programming.

- Suitable for simulating resistors, platinum/copper RTDs, thermistors, strain gages, load cells.

- Users may directly program resistances or RTD simulation (copper or platinum) temperatures.

- Four programmable resistance ranges allow resistances from 5 ohms to 65.5 Kohms.

- Any channel is switchable to front-panel calibration check connector for in-system test without disconnecting field wiring.

- Simple register based VME interface with no handshaking required.

- Optional built-in self-test (BIST) and mil/COTS versions available.

- Optional termination panels and bridge completion boards available.