Teledyne Lecroy Frontline BPA 600, Hardware And Software User Manual, Page: 68 / 348

Figure 3.37 - BPA 600 Conductive Test Setup
Both ComProbe BPA 600 antennas must be connected as shown.
The AT1 through AT4 attenuator values will depend on the DUT1 and DUT2 transmitter Class. At higher power
levels all four attenuators may be needed. In all cases, use good engineering practices to protect the devices
under test and the ComProbe hardware from damage, and to ensure reliable operation.
Assuming that there is no attenuation in the test setup:
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At each T-connector the power will split in half. Therefore the power reaching the BPA 600 protocol
analyzer will be one-fourth the transmitted power. For example if DUT 1 is a Class 1 device transmitting
+20 dBm (100 mW), at the first T-connector it will split with +17 dBm (50 mW) going to DUT2 and +17dBm
(50 mW) going to the ComProbe analyzer.
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The +17dBm (50 mW) going to the ComProbe analyzer splits again. Each coaxial cable going to a
ComProbe analyzer antenna connector c14 dBm (25 mW).
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If DUT1 or DUT2 is a Class 2 device, +8 dBm (6.25 mW) will reach each ComProbe analyzer antenna
connector. If they are Class 3 devices, -6 dBm (0.25 mW) will reach each antenna connector.
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Attenuation should be selected to limit the received power levels to prevent equipment damage, and to
provide sufficient power to reliably operate the equipment. If using attenuation follow these
recommendations:
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If the devices are of the same class, the attenuators AT1 and AT2 should be of equal value.
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Attenuators AT3 and AT4 should be of equal value.
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Determine the maximum power received at the ComProbe antenna jacks. Then select an appropriate
attenuator value to limit the input power to -20 dBm (10 μW) maximum.
3.4.4 Bluetooth Conductive Test Process
After connecting DUT1, DUT2, and the Frontline Bluetooth protocol analyzer hardware, follow these steps to
capture Bluetooth data.
Chapter 3 Configuration Settings TELEDYNE LECROY
Frontline BPA 600 Hardware & Software User Manual 60