Boonton 92C RF Millivoltmeter

The Boonton 92C RF Millivoltmeter is a discontinued, analog instrument designed for accurate measurement of radio frequency power levels. It is recognized for its true RMS response, wide frequency range, and reliability, making it suitable for applications in telecommunications, aerospace, and defense. The unit features a user-friendly interface with a large, analog, mirrored scale display for easy reading of RMS volts and dBm values.

### Technical Specifications

* **Model:** Boonton 92C
* **Instrument Type:** RF Millivoltmeter
* **Display:** Analog, mirrored scale, displaying RMS volts and dBm.
* **Measurement Range:**
* Voltage: 200 µV to 3 V full scale.
* Optional 300 V measurement range with accessory 91-7C 100:1 Voltage Divider.
* Useful indications down to 100 µV.
* **Frequency Range:**
* Standard: 10 kHz to 1.2 GHz.
* Optional: 10 Hz (with unspecified accessory).
* **Accuracy:**
* Basic Accuracy: ±(1% rdg + 1% fs) for Model 92B; Model 92C has a more modest accuracy specification.
* Accuracy (specific to 92C, from another source): ±3% of full scale.
* **Response:** True RMS response for input signals up to 30 mV, with a transition to peak-to-peak response (calibrated in RMS) at higher levels.
* **Input Impedance:**
* 10 MΩ (at lower frequencies, with specific probe configurations).
* 50 ohms (standard when using specific adapters/probes).
* High input impedance, low input capacitance.
* **Crest Factor:** Varies depending on the voltage range, e.g., 84 to 1.4 for specific ranges.
* **Power Requirements:** 100-120 VAC, 50-60 Hz, 30 W. 115 or 230 V ±10%, 50 to 400 Hz.
* **Dimensions:** 17.5″ x 5.25″ x 16.5″.
* **Weight:** 19 lbs.

### Electrical Characteristics

* **Voltage Ranges (mV full scale):** 3, 10, 30, 100*, 300*, 1000*, 3000* mV (*with accessory 100:1 Voltage Divider).
* **dBm Scale:** Available, with reference to 1 mW into 50 Ω.
* **DC Output:** Linear DC output (available on Model 92B, not explicitly stated for 92C but implied by “low-cost analog version”).
* **Low Noise:** Characterized by low noise performance.
* **Hum, Noise, and Spurious Pick-up:** Specifications available in the instruction manual.

### Interfaces

* **Probe Input:** Standard probe input for RF measurements.
* **Accessory Ports:** Compatibility with various Boonton accessories for extended frequency and voltage ranges, such as the Model 91-8B (50 Ω Adapter) and Model 91-14A Tee Connector with 91-15A 50 Ω Termination.
* **Optional Accessories:**
* Model 91-8B: 50 Ω Adapter for shielded connection to 50-ohm line.
* Model 91-14A: Type N Tee Connector and 91-15A 50 Ω Termination.
* Model 91-4C: RF Probe for 1 kHz to 250 MHz.
* Model 91-7C: 100:1 Voltage Divider (for measurements up to 300 V up to 700 MHz).

### Physical Characteristics

* **Construction:** Durable construction.
* **Display:** Large analog scale with mirrored surface.

### Compatibility

* **Accessories:** Designed to work with a range of Boonton accessories to extend its capabilities. Ensure that any accessories used are calibrated with the specific unit if precise measurements are critical, as the probe and meter were calibrated together.
* **Applications:** Commonly used in telecommunications, electronics, RF engineering, aerospace, and defense industries.
* **Legacy Systems:** Suitable for integration into existing laboratory setups requiring precise RF power measurements.

Why Choose Aumictech for Boonton 92C?
At Aumictech, we specialize in supplying high-end RF test and measurement equipment. Whether you need reliable performance for critical RF power measurements, accurate true RMS readings across a wide frequency spectrum, or robust solutions for demanding applications, our team ensures the Boonton 92C delivers maximum performance for your application.