This unit
The Agilent/Keysight 5519A is a helium-neon two-frequency laser head engineered for high-precision dimensional metrology, machine tool calibration, and coordinate measuring machine verification. This Class II laser source delivers 180 µW to 1 mW of continuous-wave output at 633 nm, with vacuum wavelength accuracy of ±0.1 ppm (±0.02 ppm when MIL-STD 45662 calibrated) and 1-hour stability of ±0.002 ppm. The dual-frequency architecture minimizes beam intensity fluctuation effects, enabling reliable heterodyne displacement measurement across multiple optical configurations. Integrated control electronics and power supply support 100–240 Vac operation with 180 µW
Beam Diameter: 6 mm typical (0.24 in)
Laser Class: Class II
Reference Frequency Output: 2.4–3.0 MHz
Maximum Axis Velocity (Linear Optics): ±0.7 m/s (±28 in/s)
Maximum Axis Velocity (Plane Mirror Optics): ±0.35 m/s (±14 in/s)
Maximum Axis Velocity (High Resolution Plane Mirror): ±0.18 m/s (±7 in/s)
Warm-up Time: <10 minutes
Operating Temperature: 0–40 °C
Power Supply: 100–240 Vac, 50–60 Hz; also 110–120 Vac (48–66 Hz or 400 Hz); 220–240 Vac (48–66 Hz)
Heat Dissipation (Operating): 23 W typical
Heat Dissipation (Warm-up): 35–50 W
Physical Weight: 5.5 kg (12 lb)
Rear Clearance Required: 10.16 cm (4 in)
Key Features
Two-frequency laser design eliminates beam intensity fluctuation errors
Integrated control unit with built-in receiver and power supply
Long-life helium-neon tube for extended field deployment
Exceptional short-term and lifetime wavelength stability
Multiple optical interface options for velocity range optimization
Typical Applications
Precision dimensional metrology and machine tool offset verification
Coordinate measuring machine (CMM) system calibration
Linear and rotary axis displacement measurement
Laser interferometry-based calibration workflows
Compatibility & Integration The 5519A is the laser head component within Keysight 5529A/5529B and 5530 dynamic calibrator systems. The 5519B variant provides higher reference frequency output (3.4–4.0 MHz) for applications requiring maximum slew rates.
Agilent / Keysight 5519A — Repair & Calibration Service
Aumictech offers NIST-traceable calibration and repair for the Agilent / Keysight 5519A.
Calibration covers output power at specified wavelengths, wavelength accuracy, 15-minute output stability, and modulation frequency accuracy where applicable. All calibrations ship with a NIST-traceable certificate. Turnaround is typically 1–3 business days after receipt.
Standard Cal
$450
Pass/fail cert + NIST sticker
Cal with Data
$650
Full NIST cert with measured values
Common Agilent / Keysight 5519A faults: laser diode end-of-life (output below spec), fiber output connector damage, output instability.
Common repairs include laser diode replacement when output falls below spec, fiber output connector repair, and thermal management service.
Agilent / Keysight 5519A price
This Agilent / Keysight 5519A is listed at $950. Calibration is available separately from $450. Contact us for volume pricing or if you need multiple units.
Agilent / Keysight 5519A calibration cost
NIST-traceable calibration for the Agilent / Keysight 5519A is $450 (standard — pass/fail certificate and calibration sticker) or $650 (full measured data at every test point, reference standards documented, traceability chain included). Calibration for this instrument covers output power at specified wavelengths, wavelength accuracy, 15-minute output stability, and modulation frequency accuracy where applicable. Turnaround is 1 to 3 business days after receipt. See full calibration details →
