The Bird 4421-102 is a component of the Bird 4421 RF Power Meter system, designed for precise RF power measurement. This system requires a compatible Bird RF power sensor, such as the Bird 4021, for operation. The 4421 power meter is a multifunctional display unit that processes and presents RF power readings, including forward and reflected power, and can also display return loss and VSWR. It is engineered for use in various communication systems and RF testing environments.
### Technical Specifications
* **Model:** Bird 4421-102 (This is a specific configuration of the Bird 4421 RF Power Meter, indicating it includes certain options or interfaces)
* **System Requirement:** Requires a Bird RF power sensor (e.g., 4020 Series, 4021, 4027A Series, 4027F Series, 4028 Series) for operation
* **Power Measurement:** Displays forward power, reflected power, return loss, and VSWR
* **Accuracy:**
* Display Accuracy: ±1 on least significant digit
* Sensor Accuracy: Dependent on the specific power sensor used, with some sensors offering accuracy within ±2% or ±3% of reading
* **Frequency Range:** Sensor dependent; the 4421 meter itself is compatible with sensors covering various frequency ranges, with one source mentioning a high frequency range of 1.00 GHz for the 4421 system. Another source states the 4421 Wattmeter operates effectively up to 32 MHz. The sensors themselves have specified frequency ranges.
* **Power Range:** Sensor dependent. The Bird 4421 Wattmeter is stated to support a power range from 100 watts to 10 kilowatts.
* **Impedance:** 50 ohms nominal
* **VSWR Range Display:** 1.0 – 199.9 max
* **Return Loss Display:** 0 to 40 dB max
* **Signal Purity:** For rated accuracy, no more than 1% AM is specified for some sensors. Some sensors offer AM Rejection of < 5 kW, 10% AM.
* **Calibration:** Calibration data is stored in nonvolatile memory in each sensor. Sensor output is corrected at the frequency of measurement within the rated range.### Electrical Specifications* **AC Power:** 115/230 Vac @ 50/60 Hz
* **Fuse Rating:**
* IEC (5 x 20 mm) Type T: 0.25 A (115 Vac), 0.125 A (230 Vac)
* 3 AG, 1/4 ampere, 250 volt (outside on AC line)
* 3 AG, 1 ampere, 250 volt (inside on Power Module)
* 1A, IEC (5 x 20 mm), time-delay (for Model 4421A)
* **Battery:**
* 8 C-size Nickel Cadmium rechargeable 1.2 volt cells (NEDA Type 10014)
* 8 alkaline-manganese dioxide 1.5 volt C-cells (NEDA Type 14A)
* Internal, rechargeable (for Model 4421A)
* **Battery Life:** Minimum 8 hours continuous use
* **Battery Charger:** Built-in battery charger
* Drained batteries require approximately 28 hours to recharge.### Interfaces* **Optional Interfaces:**
* IEEE-488 GPIB
* Logic Levels: Meets all IEEE Standard 488-1978
* Connector: Standard IEEE-488 bus type
* RS-232
* Logic Levels: Meets all EIA Standard RS-232-C specifications
* Connector: RS-232 Interface Type
* Ethernet LAN (for Model 4421A)### Physical Specifications* **Dimensions:**
* 15.5”L x 12.25”W x 4.25”H (393 x 311 x 108 mm)
* Size 16"L x 12"W x 4½"H (406 x 305 x 114mm)
* *Note:* A shorter case was introduced in 2016, altering dimensions for models built from that year onwards.
* **Weight:**
* 9.5 lbs. (4.3 kg) nominal
* 11 lbs. (5kg) with batteries
* **Display:**
* LCD, 3 ½ digit display
* Indicates mode, measurement units, battery condition, remote status, and signal increase/decrease
* Self-contained backlight provided
* *Note:* Model 4421A features a 9.7-inch TFT full-color LCD with a touchscreen.
* **Construction:** Rugged and durable construction designed to handle high power levels and endure challenging operating environments.### Environmental Specifications* **Operating Temperature Range:** 0 to 50 °C (32 to 122 °F)
* **Storage Temperature Range:** –20 to +50 °C (–4 to +122 °F)
* **Humidity:** 95% ± 5% maximum (non-condensing)
* **Altitude:** Up to 10,000 feet (3,048 m)### Compatibility* **Compatible Power Sensors:** 4020 Series, 4021, 4022, 4023, 4024, 4025, 4027A Series, 4027F Series, 4028 Series, 702x Series, 703x Series
* *Caution:* Changing a sensor's connectors will invalidate calibration data and may reduce the maximum power rating of the unit.
* **Compatible Loads:** Refer to the load manual included for load specifications. Do not use the power sensor with a load VSWR greater than 2:1 to avoid damage.
* **Rack Mount:** Panel Mount Kit (P/N 4421-250) available for rack mount applications.### Why Choose Aumictech for Bird 4421-102?
At Aumictech, we specialize in supplying high-end RF measurement equipment. Whether you need precise RF power monitoring, reliable signal integrity analysis, or robust solutions for demanding RF environments, our team ensures the Bird 4421-102 delivers maximum performance for your application.
