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Bird, 4381

You are here: Power Meter / Sensor (RF) » Digital

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Above pictures can be different from actually sold item as well as the installed options. On request we'll send you high resolution pictures and options of the real item.

Product description

The Bird 4381 is a digital RF wattmeter for two-way communications, avionics, C³, radar and many other applications. At the push of a button, this new wattmeter can perform the following functions:
 

• Read incident and reflected CW and FM power in watts or dBm
• Read incident and reflected peak-envelope-power of SSB/DSB and symmetrical AM in watts
• Read incident and reflected peak pulse power as narrow as 50 micro-seconds in watts
• Calculate SWR, dB return loss, percent modulation
• Remember peak and valley readings when adjustments for maximum or minimum signal levels are made
• Over-range at least 20 percent beyond nominal full scale

Features

• Frequency: 0.45 to 2700 MHz
• Power: 100 mW to 10 kW with 20% over-range. Reads forward and reflected CW or FM power in watts or dBm, Peak Envelope Power or SSB/DSB and symmetrical AM in watts, and peak power for pulses as narrow as 0.8us Calculates SWR, return loss in dB and % modulation Stores peak and multi readings to facilitate adjustment of maximum and minimum signal levels Shock-resistant keyboard and range switches. RFI protection
• Power Range: 100mW to 10kW using Bird Plug-in Elements
• Frequency Range: 450 kHz to 2.7 GHz
• Insertion VSWR: with N connectors 1.05 max to 1000 MHz
• Power Readings: ±5% of full scale CW ±8% PEP
• VSWR: 10% of reading
• Modulation: (CW power 1/3 or more of full scale) ±5% (0-90%)   ±10% (90-100%)
• Usable Over-range: to 120% of scale (CW, PEP, SWR and Return Loss)
• Sampling Rate: 2 to 3 readings per second
• Display: 3 1/2 digit, 0.3” LED strobed
• Modulation Frequency: 25 to 10,000 Hz (audio)
• Pulse Parameters: (min.) Pulse width 0.8us (100-2700 MHz) 1.5us (26-99 MHz) 15us (2-25 MHz) Repetition Rate 25 PPS, and Duty Factor 1 x 10-4min.
• Return Loss: ±3% dB to corresponding SWR value

• Type: Bench
• Max. Frequency: 2700 MHz
• Min. Frequency: 450 KHz
• Max. power: 10 KW
• Min. Power: 100 mW
• Measure: Forward and reflected peak power SWR

Download datasheet: SgLabs_BIRD 4381.pdf (825 kb)

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