Bird - The RF Experts

Connect your Bird precision sensor directly to your computer!  

Our new 4421B540-2 Interface Module enables connection between any of our Bird 4020, 4027 and 4028 Series precision sensors to a computer and gives you access to the advanced features offered by our Virtual Power Meter(VPM) software.  The VPM allows multiple sensor measurements to be displayed simultaneously as well as provides logging and the ability to connect to our entire line of Bird Field Sensors. 

Additionally, a LabVIEWTM  Virtual Interface is available to for connecting the sensor measurement reading directly into you custom application.

product specifications:
Item No
Item Name
Interface Module
Frequency Range
Sensor dependent, 100 KHz - 3 GHz
Power Range
Sensor dependent, 100 mW to 25 kW full scale
Insertion VSWR
Sensor dependent 1.0 - 199.9
Latch-n-Lock to Sensor
USB 2.0, Type B
Serial RS-232
0.75 lbs (1.7 kg)
Dimensions H x W x D
4.1” x 2.8” x 1.4” (H x W x D)
(105 x 72 x 36 mm)
Pulse Width Parameters
>100 MHz 800 µs min.
26 - 99 MHz 1.5 µs min.
2 - 25 MHz 15 µs min.
Operating Temperature
-10 to +50 °C (+14 to +122 °F)
Storage Temperature
-40 to +80 °C (-40 to 176 °F)
compatible devices - 4421B540-2 Interface Module:
4020 Series
3% Accurate, Directional Power Sensors
4027A Series
1% Accurate, Precision Directional Power Sensors
4027F Series
1% Accurate, Filtered Power Sensors
4028 Series
2% Accurate, Precision Power Sensors
5A2653-6L2 Sealatch USB Cable
A/B USB 2.0 SeaLATCH Cable, 6ft.
AC Adapter (15 Vdc Output)
Power Cord, 6ft.