The Copper Mountain Technologies ACM2520 is a metrology-grade automatic calibration module that eliminates manual VNA calibration setup and execution. This fully automatic, USB-controlled instrument performs one-port through four-port calibrations across 100 kHz to 20 GHz (18 GHz for Type N models), delivering factory-characterized accuracy with minimal human error. The module operates over a 50 Ohm impedance, features eight reflection states per port plus a thru state, and includes a factory-characterized 20 dB in-line attenuator for DUT simulation and confidence verification.
## Technical Specifications
• **Frequency Range:** 100 kHz to 20 GHz (Type N models: 100 kHz to 18 GHz)
• **Impedance:** 50 Ohm
• **Number of Ports:** 2 RF ports
• **Calibration Types:** Full one-port through four-port VNA calibrations
• **Reflection States:** 8 per port (4 per port)
• **Thru State:** Included
• **Internal Attenuator:** 20 dB factory-characterized in-line
• **Operating Mode Setting Time:** ≤500 ms
• **Power Consumption:** ≤0.25 W
• **Dimensions:** 106.4 mm × 55.0 mm × 28.0 mm
• **Weight:** ≤0.435 kg
• **Operating Temperature:** +5 °C to +40 °C
• **Relative Humidity:** ≤90% at +25 °C
• **Atmospheric Pressure:** 70.0 to 106.7 kPa
## Key Features
• Built-in confidence check with factory-stored DUT data for calibration verification
• User-defined characterization memory supports up to three custom setups for adapters and fixtures
• USB 2.0 interface with USBTMC-USB488 control protocol compliance
• Available connector options: Type N (female/male) or 3.5 mm (female/male)
• Compact, low-power design for portable and laboratory deployments
## Compatibility & Integration
Fully compatible with all Copper Mountain Technologies Vector Network Analyzers. Open USBTMC-USB488 protocol enables external control integration with third-party VNAs via custom programming. Four model variants accommodate standard RF connector requirements.
