Overview 1
Keysight E6961A User Guide and Method of Implementation 43
Specification References
[1] BroadR-Reach Physical Layer Transceiver Specification, v3.2, Section 5.4.4.
[2] 100Base-T1, IEEE Std. 802.3bw-2015, Section 96.5.6.
PSD Test Information
Reference [1] specifies that in Test Mode 5, the power spectral density (PSD) of
the transmitter, shall be between the upper and lower bounds specified in the
table below.
The upper and lower limits are piece-wise linear masks connecting points given in
the table above. A lower PSD mask is provided to ensure the tolerances.
This test could be run using an external spectrum analyzer or the oscilloscope.
Table 1-5 PSD Test settings
Frequency
PSD Upper Bound (dBm)
[a]
PSD Lower Bound (dBm)
1
@1 MHz -23.3 -30.7
@20 MHz -24.8 -35.6
@40 MHz -28.5 -49.0
57 MHz-200 MHz -36.5 –
[a] Settings: RBW=10 kHz, VBW=30 kHz, sweep time >1 min, RMS detector, sweep time 3.275
seconds.
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