Sold as a SINGLE board, the CB52 contains a series of eleven precision low-value resistors for checking against the system’s calibrated values. The precision resistor values span a significant enough range to provide complete confidence of valid calibration. We recommend verification once a quarter.
Verify proper 4-Wire resistance measurements. Requires the model M4 (20 mΩ ± 20 mΩ), or an HVX-series tester with Advanced Measurements (20 mΩ ± 20 mΩ) or 4-Wire Measurement option (1mΩ ± 1mΩ). The 4-Wire Measurement option may be added to an existing high voltage tester as an upgrade.
Note that this is a ‘Plug & Play’ interface, requiring NO 4-wire fixturing to operate.
