1788-CNCHKR Allen-Bradley NetChecker | Coaxial Signal Tester

Allen-Bradley 1788-CNCHKR ControlNet NetChecker Diagnostic Tool

Product Overview

The 1788-CNCHKR, commercially known as the ControlNet NetChecker, is a specialized handheld diagnostic instrument engineered by Rockwell Automation. This tool is the industry standard for physical layer validation of ControlNet coaxial networks. Designed for field technicians and system engineers, the 1788-CNCHKR provides a comprehensive window into the health of the network by analyzing raw signal quality, detecting electromagnetic interference (EMI), and identifying impedance mismatches. Whether used during the commissioning of a new RG-6 quad-shield installation or for troubleshooting an active production line, this tool is essential for maintaining the deterministic performance required by Rockwell Automation control systems.

Technical Specifications

The 1788-CNCHKR integrates high-speed signal sampling to provide accurate metrics on 5 MHz ControlNet waveforms.

• Manufacturer: Rockwell Automation / Allen-Bradley

• Model Number: 1788-CNCHKR

• Device Type: Portable Network Diagnostic Tool (NetChecker)

• Target Media: RG-6 Quad-Shield Coaxial (75 Ω)

• Interface: BNC Connection for direct network access

• Measurement Parameters: Signal Strength (peak-to-peak), Noise Margin, Signal-to-Noise Ratio (SNR)

• Operating Modes:

• Bargraph Mode: Rapid visual health check of all nodes.

• Waveform Mode: Real-time oscilloscope-style signal analysis.

• Reporting Mode: Detailed error logging and network statistics.

• Display Type: Integrated LCD with backlight for high-visibility diagnostics

• Power Source: Internal Battery-operated (Optimized for field mobility)

• Operating Temperature: 0°C to +50°C (32°F to 122°F)

• Storage Temperature: -20°C to +70°C (-4°F to +158°F)

• Weight: 0.75 lbs (0.34 kg)

• Compliance: CE, UL, CSA compliant

• Lifecycle Status: Discontinued by Manufacturer (Available as high-quality surplus/legacy support)