Comb Generator Reference Source

Features

• ▸ Radiated reference signal source for OATS, SAC, and FAC — broadband EMC reference for fast pre-test validation of radiated emissions test sites at frequencies above 1 GHz.
• ▸ Wide frequency range: 20 MHz to 4.5 GHz — spans the upper-frequency portion of FCC Part 15, CISPR 32 Class B, RTCA DO-160 radiated bands, and into 5G FR1 territory; the highest-frequency comb generator with detachable antennas.
• ▸ 20 MHz step size — produces fundamental and harmonics every 20 MHz across the full 4.5 GHz span, providing well-spaced reference markers for spectrum analyzer monitoring without overwhelming displays at high resolution bandwidths.
• ▸ Circular base for uniform omnidirectional radiation — the circular chassis acts as a ground plane, producing a uniform radiation pattern in the horizontal plane regardless of orientation on the turntable.
• ▸ Two interchangeable detachable monopole antennas (2-inch and 12-inch) — supplied for optimized radiation across the lower- and higher-frequency portions of the 20 MHz to 4.5 GHz range.
• ▸ Compact cylindrical chassis — 7″ × 1″ (17.8 × 2.5 cm), 1.5 lbs (0.7 kg); easily mounted on tripods or directly placed on turntables for site verification.
• ▸ Battery operation, 18+ hours per charge — internal 6 V / 1 Ah NiMH battery eliminates external power cabling that could disturb the radiated signal pattern, especially important above 1 GHz.
• ▸ Automatic low-battery shut-off — battery monitoring circuit shuts the unit down before output level degrades, protecting baseline data integrity.
• ▸ Stable, repeatable RF output — 20 ppm frequency stability, ±0.1 dB amplitude stability, and <1 dB time stability over 12 months allow direct comparison of measurements taken months apart.
• ▸ External LED indicators — battery low and power on LEDs confirm operating status during chamber walk-throughs.
• ▸ NIST-traceable calibration — calibration data and certificate ship with each unit; ISO 17025 accredited calibration available on request.
• ▸ Three-year standard warranty — backed by manufacturer support.