DE04-2 Multi-Axis Automated Reference Frame

Basic Usage

The DE04-2 Reference frame system is designed for mounting a reference antenna, a device under test (DUT) or materials under test (MUT). The frame can be moved on the Z-Axis (horizontal in reference to positioner) or rotated on the azimuth axis a full 360 degrees.


Mirror Method Usage

When the 4-foot reference mirror option is installed, single antenna real-time vector S-Parameter gain measurements may be performed using Diamond Engineering’s proprietary software algorithm. This methodology has been shown to be more accurate and much faster than the traditional 3-point method. This method involves simple S11 measurements. Expensive VNAs are not required for this method of antenna calibration (only a low-cost single-port VNA is necessary). 1-meter and 3-meter measurements (or anything between) become trivial.

The mirror plane is made parallel using a laser and an optically flat mirror. Can also accommodate material for measurement from 1 to 4 sq. ft using Diamond Engineering’s Material Measurement Software (as shown below).

Educational discounts are available for students, teachers or staff of universities or technical schools.

Key Features & Functions

  • Easy single antenna measurements
  • Material measurements
  • Reference probe positioning
  • Phase center measurements
  • Spherical near field


  • Multiple configuration options
  • Ultra-high precision (up to 0.02º)
  • Ideal for large chambers

What's Included?

The standard DE04-2 package features:

  • 2-axis positioner with tilt
  • Software control
  • Power supply
  • DUT mounting hardware
  • Tools and documentation
  • 3-year warranty

DE04-2 Specifications


Footprint:120” x 36” (305 cm x 91.5 cm)
Total Height:84” (213 cm)
Total Width:48" (122 cm)
Total Weight:150 lbs (44.9 kg)
Frame payload:Up to 50 pounds (22.7 kg)
Positioner payload:Up to 100 pounds (45.4 kg)
Minimum MUT / DUT:12" x 12" (30.5 cm x 30.5 cm)
Maximum MUT / DUT:48" x 48" (122 cm x 122 cm)
Frame:Fiberglass, PLA, acrylic, garolite, nylon
Linear axis:Wood base with hardened steel linear rail bearings
Rotary axis:Aluminum, brass, steel


Linear Axis
Total travel:7.25 feet (2.2 m)
Drivetrain:Linear ball screw with NEMA 23 closed-loop stepper motor
Resolution2 mm
Maximum speed:40 in/sec (100 cm/sec)
Minimum speed:0.4 in/sec (0.1 cm/sec)
Rotary Axis
Range:Continuous azimuth (limited to +/- 360º w/ cable pass-through)
Pass-through diameter:3 inches (75 mm )
Drivetrain:Precision worm gear with NEMA 23 stepper motor
Maximum speed:60 deg/sec
Minimum speed:1 deg/sec
Mounting Tilt
Range:+/- 10º (from 80º to 90º)

External Control Pendant

Cable length:24 feet (7.25 meters)
Display type:2-line LCD
Display monitoring:Axis position and status
Movement resolution:0.55 mm to 10 mm per increment
Power:Powered via control cable
Weight:8 oz (0.25 kg)

Standard Models

DE04-2Standard reference frame, no accessories
DE04-2-MIRRORMirror kit w DAMS Antenna Measurement Suite
DE04-2-ABSAbsorber kit
DE04-2-FOAMFoam pedestal w/ delrin mounting rod (user specified specs)


OPT-ENCEncoder feedback capability
DPA-PDKDAMS Platform Development Kit
OPT-SMASoftware maintenance agreement


DEPC-DPre-configured PC (desktop)
DEPC-LPre-configured PC (laptop)
DE-SIMDAMS Antenna & Network Simulator software add-on
DPA-SW-N2FSpherical nearfield processing
DPA-AUTOPOL18 GHz SPDT RF switch auto-polarizer with cables/adapters
DPA-AUTOPOL-4040 GHz SPDT RF switch auto-polarizer with cables/adapters
DE-05xxBroadband reference horn 500 MHz to 18, 26, 30 or 40 GHz
DE-07xxBroadband reference horn 700 MHz to 18, 26, 30 or 40 GHz

Product documents

  DE04-2 Series Datasheet

  DE04-2 Series Installation Manual (coming soon)

  DAMS Software Suite Manual

  Diamond Engineering Products Brochure

Part Drawings

(coming soon)


If you’re looking for drawings, please contact us.

Should you need any assistance, please contact or call us at 530-626-3857

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