The HP/Agilent 5352B is a 40 GHz continuous wave microwave counter engineered for precision frequency measurement across demanding applications in microwave engineering, communications testing, and radar system servicing. It delivers fast measurement throughput exceeding 100 readings per second, exceptional sensitivity down to -30 dBm typical, and selectable resolution from 1 Hz to 1 MHz on a single hybrid GaAs circuit platform.
## Technical Specifications
**Frequency Coverage**
• Input 1: 10 Hz to 40 GHz (Option 005 extends to 46 GHz)
• Input 2: 10 Hz to 525 MHz
**Sensitivity**
• 500 MHz to 26.5 GHz: -25 dBm (spec) / -30 dBm (typical @ 25°C)
• 26.5 GHz to 40 GHz: Linear decrease -25 to -15 dBm (spec) / -30 to -20 dBm (typical @ 25°C)
**Input Power Specifications**
• Maximum input power: +7 dBm
• Damage level: +25 dBm
**Resolution & Accuracy**
• Selectable resolution: 1 Hz to 1 MHz
• Accuracy: ±1 LSD ± (time-base error × frequency)
• 3 LSD rms typical for 1 Hz–1 kHz resolution at 25°C; 7 LSD typical for 26.5–40 GHz
**Measurement Performance**
• Auto mode: >100 readings/second over HP-IB
• Manual mode: >120 readings/second over HP-IB
• Automatic acquisition (fast-track): <60 ms; (normal FM): <125 ms; (low FM): <1.25 s
• Manual acquisition: 6 dB typical for signals within 500 MHz)
• Sleep mode reduces Input 1 emissions to <-70 dBm typical for noise-sensitive environments
• Math functions: scale, offset, exponential averaging
• AM tolerance: any modulation index above sensitivity threshold
## Typical Applications
Microwave component characterization, communication system validation, radar frequency verification, and production test automation in RF/microwave laboratories.
