PVA-3000 Reference Manual
December 2, 2019 Sifos Technologies
3.10. Meters Menu
PhyView Analyzer transmitter and interface measurements and metering were introduced in Sections 1.3 and 2.2.2.
The Meters menu provides interactive access to these resources for analyzing 100BaseTx and 1000BaseT DUT’s.
There are two framed sub-menus in the Meters tab menu (see Figure 3.23), Meter Type and Meter Configuration.
From the Meter Type sub-menu, users can select from one of the following 6 meters:
1. SNR (Signal-to-Noise, see Sections 1.3.4 and 2.2.2)
8. PSD (Power Spectral Distortion, see Section 1.3.3 and 2.2.2)
9. Echo (Bulk Return Loss, see Section 1.3.8 and 2.2.2)
10. Xtalk (Bulk Crosstalk, see Section 1.3.9 and 2.2.2)
11. Power (Tx Level, see Section 1.3.5 and 2.2.2)
12. Skew (Pair Timing Skew, see
Section 1.3.6 and 2.2.2)
Three of these meters, Echo, Xtalk,
and Skew are only available for
1000BaseT links and therefore are only
selectable when the Link Speed under
the Configuration sub-menu is set to
1000.
The Configuration sub-menu includes
various settings that can be dependent
upon the selected Meter Type. The
configuration settings include Link
Speed, measured Pair(s), Averages,
and Frequency Range.
3.10.1. Link Speed Configuration
In order to select that Echo, Xtalk, or
Skew meters, Link Speed must be set
to 1000 and when one of these meters is
selected, the 100 setting for Link
Speed will be disabled.
Link Speed is an independent configuration setting to the SNR and PSD meters meaning that these meters will attempt
to force the desired link speed as part of the measurement setup. So if a test port is linked at 100BaseT to a port-under-
test and a PSD measurement is configured for 1000, then the test port will force a new 1000BaseT link before
performing the PSD measurement(s).
Unlike SNR and PSD, the Power meter adapts to the present link configuration, either 100BaseTx or 1000BaseT and
reports power per transmitting pair accordingly. So when Power is selected, Link Speed is not selectable and the
measurement will be performed on the present link rate. If the current rate is 100BaseTx, just a single pair, either pair
3 if MDI or pair 2 if MDI-X will be reported. If the current rate is 1000BaseT, all four pairs will be reported.
3.10.2. Pair(s) & Averages Configuration
The Pairs(s) configuration setting defines which pair or pair-group will be reported in any given measurement. The
options here are very much Meter Type and Link Rate dependent. The available options are described in the
following table.
Pair 2 | Pair 3 | All (= Pair 2 & Pair 3)
Pair 1 | Pair 2 | Pair 3 | Pair 4 | All (=Pairs 1-4)
Pair 2 | Pair 3 | All (= Pair 2 & Pair 3)
Pair 1 | Pair 2 | Pair 3 | Pair 4 | All (=Pairs 1-4)
Pair 1 | Pair 2 | Pair 3 | Pair 4 | All (=Pairs 1-4)
Grp 12 | Grp 13 | Grp 14 | Grp 23 | Grp 24 | Grp 34 | All (Pair Groups)
(None – reports present incoming pair)
(None – reports all 4 pairs)
(None – reports all 4 pairs)
Figure 3.23 Meters Tab Menu
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