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Bird 4421 THRULINE® High Accuracy RF Power Meters
Specifications
- Circuitry: microprocessor-based operation with digital display
- Functions: Forward Power in watts or dBm, Reflected power in watts or dBm, VSWR,
Return loss in dB, Minimum and Maximum value of any parameter on display
- Display: 3½ digit liquid crystal display with annunciator for mode, measurement
units, battery condition, programming status, and trend arrows. Switchable backlight
- Power Range: 100mW - 10kW FS
- VSWR Range: 1.0 - 199.9
- Ranging: selectable manual or autoranging. Power sensor dependent
- Overrange Indication: audible warning when RF power input exceeds 120 percent of
sensor's maximum power range
- Operating Power: 3-way operation from AC mains or batteries. 115/230VAC,
50/60Hz, 8 nickel cadmium 1.2V C cells (NEDA type 10014), or 8 alkaline-manganese dioxide
1.5V C cells (NEDA type 14A). Built-in charger easily disabled for operation with
non-rechargeable cells
Interfaces - Optional
- Type: field-installable IEEE-488 or RS-232 serial interface
RF Power Sensors
All Models
- Type: Thruline®, design for direct insertion in 50-ohm line
- Circuitry: microprocessor-based measurement and conversion
- Bi-directional Operation: pick-up of RF power in precision 50.00 ohm line
- Connectors: QC-type. Female N normally supplied; 25 other coaxial-type
connectors available
- Minimum Directivity: 30 dB
- Signal Purity for Rated Accuracy: no more than 1 percent AM; harmonics -50dB or
less
- Calibration Technique: calibration-vs-frequency curve stored in non-volatile
memory within each sensor
| Model |
Power Input |
Frequency Range |
VSWR Range |
Insertion Loss (db) |
| 4021 |
300mW - 1000W
(1200W Max) |
1.8MHz - 32MHz |
1.0 - 2.0 |
< 0.05 |
| 4022 |
300mW - 1000W
(1200W Max) |
25MHz - 1000MHz |
1.0 - 2.0 |
25-512MHz: < 0.05
512-1000MHz: < 0.13 |
| 4024 |
3W - 10kW
(12kW Max) |
1.5MHz - 32MHz |
1.0 - 2.0 |
< 0.05 |
| 4025 |
3W - 10kW
(12kW Max |
100kHz - 2500kHz |
1.0 - 2.0 |
< 0.05 |
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