Description
1. At-A-Glance Executive Brief
- Model: 4104C (ZMI-4104C)
- Brand: ZYGO
- Part Type: 4-Axis Laser Interferometer Measurement Board
- Lifecycle Status: Mature / Legacy System Support
- System Compatibility: ZYGO ZMI Laser Metrology Systems / VME64x Racks
- Core Protocol: Real-time data streaming / Quadrature position feedback
2. Technical Introduction
- Problem: High-precision optical manufacturing floors and semiconductor lithography stages suffer from nanometer-scale drift when legacy metrology interface electronics experience bus timing failures or channel degradation.
- Agitation: Sourcing direct replacement controller boards for older VME-based displacement measuring interferometers is difficult, risking prolonged metrology downtime and expensive calibration resets.
- Solution: The ZYGO 4104C slides directly into the measurement rack, running native signal processing routines to restore sub-nanometer displacement tracking and closed-loop position stability without modifying existing optical heads.
3. Core Technical Specifications
| Parameter | Value |
| Manufacturer | ZYGO Corporation |
| Part Number | 4104C / ZMI-4104C |
| Module Type | Laser Interferometer Measurement Electronics Board |
| Number of Axes | 4 Independent Measurement Axes |
| Board Format | 6U VME64x |
| Position Resolution | 0.15 nm (\lambda/4096 equivalent performance) |
| Minimum Optical Power | 0.07 \muW |
| Max Target Velocity | \pm 2.55 m/s |
| Cyclic Error Compensation | Integrated hardware option enabled |
| Operating Temperature | 0^\circC to +45^\circC |
4. Field Engineer’s Tech Notes
- Optical Power Thresholds: Verify that incoming beam intensity from the remote laser head meets the minimum optical power threshold (0.07 \muW). Degraded fiber-optic couplers or misaligned receiver optics will trigger low-signal error flags on the front-panel diagnostics.
- VME Backplane Bus Termination: Ensure slot power distribution and VME64x backplane termination blocks are securely seated. Loose pin connections introduce jitter into the quadrature pulse trains, corrupting high-speed motion controller synchronization loops.
5. Adaptive QA & Testing Protocol
Every inventory unit undergoes bench testing to validate hardware reliability prior to dispatch. For the ZYGO 4104C measurement board, our technicians execute optical simulator testing using multi-channel heterodyne signal generators to verify phase quadrature tracking, positional resolution accuracy across all 4 axes, and error-free data communication over the VME interface. Signal-to-noise ratios (SNR) and internal clock synchronization routines are monitored under simulated high-velocity conditions. Complete test reports and pre-shipment functional verification videos are available upon request.
6. Buyer’s FAQ
- What is the standard warranty coverage for this measurement board?All units—whether New Surplus (NSFP) or fully tested/refurbished—carry a comprehensive 12-month operational warranty from the date of purchase.
- How fast can this module be shipped for urgent lab repairs?In-stock items ship the same business day if ordered before our daily carrier cutoff, with expedited global air delivery options available.
- Is the 4104C a drop-in replacement for older 2-axis or 3-axis ZYGO boards?While it fits standard 6U VME64x racks, upgrading from lower-axis configurations requires verifying your VME address mapping, slot power availability, and host software configuration parameters.
