The 3000ZR is an integrated 1.018V and 10V reference standard using a multi cell zener reference. Power is supplied via a 12V DC power supply, with internal rechargeable battery backup. The instrument provides indication of power, reference ready and low battery conditions.

The 3000ZR is built using multi cell zener reference technology with integrated temperature controlled environments for each individual cell. This allows a robust solid state design with the ability to sustain short circuit without damage, whilst retaining a lightweight and transportable form factor.