Bird - The RF Experts
Bird Diagnostic System (BDS2)
Bird Diagnostic System (BDS2)

The Bird Diagnostic System (BDS2) is a revolutionary tool for measuring  voltage and current in complex applications. Where repeatability of sensitive RF measurements is important, such as during the processing of silicon wafers, the BDS2 provides never-before seen data. Each system is comprised of a sensor that attaches in-situ in the RF feed line, a receiver that performs the data conversion and communicates to your workstation, and a calibrated data cable that connects the sensor and receiver. With the ability to make measurements post-matchbox, the BDS2 uncovers signal characteristics that are not visible to traditional test equipment pre-matchbox.

Using sophisticated parallel signal processing, the BDS2 is able to simultaneously measure and report voltage, current, and phase angle at multiple fundamental, harmonic and intermodulation frequencies. A robust frequency tracking algorithm is employed to guarantee accurate measurements are made under very dynamic signal conditions. With this data, power and impedance are calculated at each frequency, giving users the ability to identify small discrepancies that may make the difference between a successful and a failed process. This makes the BDS2 an incredible tool for researching new RF technologies and repeating high precision processes. The BDS2 is compatible with existing BDS sensor and cable installations.

Bird Diagnostic System (BDS2)
product specifications:
Item No
Bird Diagnostic System (BDS2)
Item Name
BDS2, Bird Diagnostic System
Frequency Range
307 kHz - 252 MHz (Sensor Dependent)
Frequency Resolution
100 Hz
Frequency Accuracy
± 1 kHz
Number of Fundamentals
Up to 3 simultaneously, chosen from the following: 400kHz, 1MHz, 2MHz, 13.56MHz, 27.12MHz, 60MHz (only certain combinations allowed)
4 harmonics per fundamental, 6 intermodulation products per pair of fundamentals, up to 252 MHz. Limited by maximum number of measurement channels (12).
Voltage, current, phase, frequency, impedance, power at frequencies selected by user
Update Rates
100 Hz typical
Network Protocol - Future Enhancements
Ethernet (DeviceNet, EtherCAT)
RF Power
Determined by RF sensor (Typically 10kW or higher)
RF Connectors
Custom or QC
Operating Mode
Tracking Mode, Spectral Search Mode
Frequency Slew Rate
2 GHz/sec
Minimum Pulse Width
5 μsec
Receiver Operating
+20 to +40 °C (68 to 104 °F)
Receiver Storage
-20 to +80 °C (-4 to +176 °F)
Cable Operating
0 to +100 °C (32 to 212 °F)
Cable Storage
-20 to +100 °C (-4 to 212 °F)
Sensor Operating-Storage
Refer to Sensor Specification
85% Non-condensing
Air Pressure-Min
745 mbar (equivalent to 2,500 m / 8,200 ft. max altitude)
Operating Power
15VDC, 2.5A nominal
System Components
7001A900-2 BDS 2 Single Ch. Receiver w/Ethernet

Calibrated Data Cable Options
7001B040-5M RF/Data Cable Set, 5M straight

Sensor Options*
7001A550-1-XXYY (Select input (XX) and output (YY) connector, see datasheet)
7001A550-2 Sensor, BDS2, Protruding Dielectric
*(Contact factory for a custom designed sensor and custom frequency combinations.)