The HP/Agilent 11851B Test Port Cable Kit comprises four 50 Ω Type-N male RF cables engineered for network analyzers and precision RF measurement systems. Three flexible cables measure 610 mm (24 inches) with phase matching to ±4 degrees at 1.3 GHz; one cable measures 860 mm (34 inches). The kit operates across 300 kHz to 3 GHz with return loss specifications of ≥24 dB from 300 kHz to 2 GHz and ≥22 dB from 2 GHz to 3 GHz. Designed specifically for analyzers without integrated test sets, the kit provides shielded RF connections for test set and power splitter configurations. Phase-matched cable sets ensure coherent measurements in multi-port applications. The standard configuration includes phase-matched cables; Option B24 provides unmatched cables if phase matching is not required. Type-N connectors demand careful handling—maintain cleanliness, minimize flexing, and ensure proper seating to prevent alignment errors and measurement degradation. Connector center conductor and dielectric specifications follow Type-N male standards with minimum shoulder dimension of 0.208 inch.
Technical Specifications
• Connector Type: Type-N Male, 50 Ω impedance
• Frequency Range: 300 kHz to 3 GHz
• Cable Lengths: Three cables at 610 mm (24 inches); one cable at 860 mm (34 inches)
• Return Loss: ≥24 dB (300 kHz–2 GHz); ≥22 dB (2 GHz–3 GHz)
• Phase Matching: ±4 degrees at 1.3 GHz (three matched cables in standard configuration)
• Cable Type: Flexible
– Key Features
• Four-piece cable set with phase-matched configuration for coherent multi-port measurements
• Dual-length design accommodates various test setup geometries
• High return loss across operating range ensures minimal reflections
• Type-N male connectors rated for 50 Ω shielded applications
– Typical Applications
• Network analyzer test port connections (HP 8510 series and equivalents)
• Systems requiring external test sets or power splitter integration
• RF characterization where cable phase consistency impacts measurement accuracy
– Compatibility & Integration
Intended for network analyzers and RF test equipment lacking integrated test sets. Standard configuration delivers phase-matched cables; Option B24 substitutes unmatched cables when phase matching is not required.
