Quick answer

Choose the ZMI 2400 for cost-effective, multi-channel interferometer setups with optional Ethernet connectivity. Choose the ZMI 4004 when you need built-in cyclic error compensation for higher precision displacement measurements.

Channel count and connectivity

The ZMI 2400 offers flexible channel configurations (1 or 2 channels) and an optional Ethernet interface, making it suitable for systems that need network integration. The ZMI 4004 does not list channel count or Ethernet options in its available configurations, so it is best considered for single-channel, direct-connection setups where network integration is not required.

Cyclic error compensation

The ZMI 4004 includes a selectable Cyclic Error Compensation option (Yes or No), which can reduce periodic measurement errors common in high-precision interferometry. The ZMI 2400 does not offer this option, so if your application demands the lowest possible cyclic error, the ZMI 4004 is the clear choice.

Trade-offs at a glance

  • Channel flexibility: ZMI 2400: choose 1 or 2 channels. ZMI 4004: single-channel only (no channel option listed).
  • Network integration: ZMI 2400: optional Ethernet interface. ZMI 4004: no Ethernet option listed.
  • Cyclic error performance: ZMI 4004: selectable cyclic error compensation. ZMI 2400: not available. If cyclic error is critical, the ZMI 4004 is the only option here.
  • Cost: ZMI 2400: significantly lower price (catalog comparison price USD 8,474). ZMI 4004: higher price (catalog comparison price USD 24,225). Budget-conscious projects should evaluate whether cyclic error compensation is worth the premium.

Product facts

  • ZMI 2400 Measurement Electronics: Available in 1 or 2 channel versions, with optional Ethernet interface. Lets you match the module to your multi-axis or networked measurement system without paying for unused channels.

    ZMI 2400 Measurement Electronics

    ZMI 2400 Measurement Electronics

  • ZMI 4004 Measurement Electronics: Offered with a selectable Cyclic Error Compensation option (Yes or No). Reduces periodic displacement errors, critical for nanometer-level interferometer accuracy.

    ZMI 4004 Measurement Electronics

    ZMI 4004 Measurement Electronics

Which module fits your system?

Best for

  • Multi-channel or networked interferometer setups on a budget
  • Applications where cyclic error compensation is not required

Not ideal for

  • Single-channel, ultra-high precision measurements that demand cyclic error correction