The HP 58502A is a precision distribution amplifier engineered to deliver multiple high-integrity outputs from a single input signal across 0.1 MHz to 10 MHz. Designed for frequency standards laboratories, manufacturing, and R&D environments, it amplifies and distributes signals from cesium, rubidium, quartz, and GPS-based frequency standards with exceptional phase noise performance and port-to-port isolation.
Technical Specifications
Signal Distribution & Outputs
• 12 BNC female output connectors
• Operating frequency range: 0.1 MHz to 10 MHz
• Input signal amplitude: +7 dBm to +15 dBm
• Output signal amplitude: +13 dBm (tolerance +1 dB / -3 dB)
• Input/output impedance: 50 Ω nominal
• Input return loss: SWR <1.5
Signal Purity
• Port-to-port isolation: ≤100 dBc typical
• Harmonic distortion (standard): ≤32 dBc; with Option 010: ≤20 dBc
• Spurious signals (standard): ≤110 dBc typical; with Option 010: ≤80 dBc
• Single sideband phase noise at 100 Hz: ≤127 dBc/Hz; at 1 kHz: ≤142 dBc/Hz; at 10 kHz: ≤148 dBc/Hz
• AM-to-PM conversion: Minimized by internal automatic gain control
Stability & Accuracy
• Temperature stability: 6 × 10⁻⁹ (0 °C to +55 °C)
• Aging rate: 5 × 10⁻¹⁰ per day; 1 × 10⁻⁷ per year
• Tuning range: 7 × 10⁻⁷ minimum
Interfaces & Control
• Input: 2 × BNC female connectors (Input A, Input B)
• Remote system interface: RS-232C DTE, DE-9P male connector
• Alarm/status output: Open-collector, 10 kΩ pull-up to 5 Vdc, DE-9P male; compatible with HP 58503A and HP 5071A alarm signals
Physical & Environmental
• Dimensions: 426 mm W × 344 mm D × 45 mm H (16.77 × 13.54 × 1.77 in)
• Weight: 2.95 kg (6.5 lbs) nominal; 6.35 kg (14 lbs) shipping
• Power: 100–132 Vac or 175–240 Vac, 47–63 Hz; 80 VA maximum
• Operating temperature: 0 °C to +55 °C; non-operating: -40 °C to +70 °C
• EMI compliance: CISPR 11, Group 1, Class B
– Key Features
• Twelve isolated output channels from single input
• Configurable dual-input design with automatic input selection logic
• Optional internal backup oscillator (Option 010) reduces harmonic and spurious content
• Rack mount kit available (Option AX4)
• Low phase noise maintains frequency standard integrity across distribution network
– Typical Applications
• Distribution of cesium and rubidium frequency standards in metrology labs
• Multi-channel clock distribution in precision timing networks
• GPS timing signal amplification and isolation
• Laboratory test and measurement signal distribution
– Compatibility & Integration
Interface via RS-232C for remote gain adjustment and system monitoring. Alarm input accepts signals from HP 58503A and HP 5071A frequency standards. All outputs source 50 Ω impedance for direct connection to standard test equipment.
