1.0 - SATA-IO

Tektronix, Inc.Figure 2.6. Impedance balance loss measurements for TX-05. Cursor 1 reads –20.4dB at 798MHz, and cursor2 reads -21.2dB at 4.28GHz.Observable Results:The TX Impedance Balance shall be above the minimum limits specified in reference [1] for Gen2iproducts. For convenience, the values are reproduced below.Frequency RangeLower Rloss Limit (Gen2i)150-300 MHz 30 dB300-600 MHz 20dB600-1200 MHz 10 dB1200-2400 MHz 10 dB2400-3000 MHz 4 dB3000-5000 MHz 4 dBPossible Problems:1. First incident step needs to be windowed out, otherwise the measurement will not be accurate. Thecorrect acquisition window settings are shown in Figure 2.22. When the transmitter does not support “disconnect” operation the test setup described in the AppendixD can be used.SATA Rx/Tx MOI Revision 1.1 ver 1.021