Sifos Technologies PhyView PVA-3000, Reference Manual

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PVA-3000 Reference Manual
December 2, 2019 Sifos Technologies Page
95
Command Test
Port Command Parameters Returned Parameters
pva_rx_100 port < link_mon | packets < rx slot , port > < count pkts >
< rate line | rate slow > < size min | size med | size max >
< loopback >> < mdi | mdi-x > < noloss > < impair offset_dB >
Returns Link Stability
(%), Link Viability (
UP |
DOWN ), or Packet
Flow (%) for:
MDI Connection and
MDI-X Connection
each:
Line Loss +
.Min Tx Level and Slew
.Freq Offset
–50 ppm
.Freq 50 ppm
.Freq Offset
–100 ppm
.Freq 100 ppm
.Noise 5 dB(40mV)
.Noise 11 dB (40mV)
.Freq Jitter 11 dB (1.4
nsec)
.Freq Jitter 17 dB (1.4
nsec)
.Noise 4 dB + Jitter 10
dB
.Noise 10 dB + Jitter 16
dB
Analyzes a 100BaseTx Receiver under an array of impairments
and impairment combinations. Measurement method may be
specified as
Link Monitor or Packet Flow .
If Link Monitor is used, the test will first evaluate whether DUT
port maintains link with very severe impairment where zero
packets would flow. If link is maintained in this condition, Link
Monitor will assess link stability over a period of ~20 seconds per
impairment condition, then report “UP” if link is >99% available or
“DOWN” if less available. If link drops or falls back to 10BaseT
with severe impairment, Link Monitor will report Link Stability as
a % where 100% means no link drop instances over a 20 second
period. Link Monitor requires just a single DUT connection.
Packet Flow will report as percent of (line rate) packets received
and forwarded. Packet Flow requires two test port connections
to a switch or hub type of DUT unless
loopback is specified.
link_mon Assess stressed receiver performance using Link
Monitor. This is the default meter. If Link Monitor operates as
Link Viability
indicator, there is no assurance that an “UP”
indication means the port will forward some or all traffic. A
“DOWN” indication means it will not forward all traffic. If Link
Monitor operates as a
Link Stability indication, link stability
should roughly correspond to hypothetical packet flow %.
packets Assess stressed receiver performance using Packet
Flow. This requires that 2 (or more) test ports be connected to
a DUT that is either a switch or a hub. The default setup is to
connect both test ports of a test blade to the DUT in order to
perform packet testing.
rx slot , port Specify a non-default test port slot , port for receiving
packets to count given a packet flow measurement. Default
test port is always the calibration partner port, that is the other
test port on the same test blade.
count pkts Specify a non-default packet count for Packet Flow
testing. Default is 1024K packets. Range is 32K, 128K, 512K,
1024K, 5120K, or 10240K packets.
rate line Packet flow to run at line rate (minimum packet gap).
rate slow Packet flow to run at slower rate (1136 bit packet
gaps).
size min Packet flow to run with 64 byte packets.
size med Packet flow to run with 512 byte packets.
size max Packet flow to run with 1516 byte packets.
loopback Transmit to and receive packets from same DUT port.
Requires DUT port that supports MAC frame loopback mode.
mdi Test DUT in MDI configuration only. Default is to test both
MDI and MDI-X configurations.
mdi-x Test DUT in MDI configuration only. Default is to test both
MDI and MDI-X configurations.
noloss Exclude Line Loss impairment from all impairment
configurations as required for service outlet testing. Default is
to always connect line loss impairment.
impair offset_dB Adjust Noise and Jitter impairment levels by
-6dB to +3dB from default levels ( see Returned Parameters ).