Sifos Technologies PhyView PVA-3000 User Manual

PVA-3000 Reference Manual
December 2, 2019 Sifos Technologies
Page
80
4.8. DUT Transmitter Measurement Calibrations
The PVA-3000 offers three fully automated DUT transmitter and interface measurements that require advance
calibrations (see Section 2.2.6) before those measurements can be performed. These are:
 Power Spectral Distortion: Frequency Response Relative to Nominal Frequency Response on a
100BaseT or 1000BaseT Channel
 Echo Response: Bulk (wideband) Pair Mismatch or Return Loss on a 1000BaseT Channel
 Crosstalk Response: Bulk (wideband) Pair-to-Pair Crosstalk on a 1000BaseT channel
Calibrations for each instrument, test port, link speed (PSD only), and LAN pair must be completed before any of these
measurements can be performed. Each of these calibration operations always require the stat query argument.
Command
Port
Command Parameters
Query
Returned
Parameters
pva_psd
<port>
cal <trig off > <pair pairNo> <link 100 | 1000>
<avg nAvgs>
stat
STORED
+
Rx_Gain
+
PPC (peak possible
power)
+
126 tap coefficients
LINK_DROP |
UNLINKED |
DISCONNECTED
Configures and performs a Power Spectral Response (PSD)
calibration using the opposite test port on the same PVA-
3102 test blade connected via the dedicated test cable (see
Section 2.2.6). Calibration data for a given link speed and
LAN pair on each Test Port will be stored for use by future
PSD measurements involving that same Test Port.
cal Initiate (given stat query) a PSD calibration.
trig off Configures calibration to start immediately upon stat
query. (Test Port wake-up default) NOTE: Event trigger
“ext” not supported for PSD calibrations.
pair pairNo Specifies LAN PAIR to calibrate. Range is 1 to 4
where Pair 1 is TIA blue pair, Pair 2 is TIA orange pair,
Pair 3 is TIA green pair, and Pair 4 is the TIA brown pair.
If link is 100BaseT, only Pair 2 or 3 may be specified and
depending on pair number, link will be forced to MDI_X or
MDI respectively. (This configuration is not maintained if
PSA Software is closed. PSA Software wake-up default =
3.)
link 100 Specifies a calibration using 100BaseT. (This
configuration is not maintained if PSA Software is closed.
PSA Software wake-up default.)
link 1000 Specifies a calibration using 1000BaseT. (This
configuration is not maintained if PSA Software is closed. )
avg nAvgs Specifies the number of raw measurements to
average into each PSD finished measurement. Range is
1 to 64. NOTE: 64 is the recommended setting for PSD
calibrations.
?
Trigger_Mode (off |
ext)
+
pairNo
+
Link_Speed (100 |
1000)
+
fstart
+
fstop
+
nAvgs
+
Timeout 10 | 100
pva_echo
<port>
cal <trig off > <pair pairNo> <avg nAvgs>
stat
STORED
+
Rx_Gain
+
Tx_Power
+
Reference Echo
Response (16
coeff)
LINK_DROP |
UNLINKED |
DISCONNECTED
Configures and performs an Echo Response calibration on
selected pair using the opposite test port on the same PVA-
3102 test blade connected via the dedicated test cable (see
Section 2.2.6). Calibration data for each LAN pair on each
Test Port will be stored for use by future 1000BaseT Echo
and Crosstalk Response measurements involving that same
Test Port.
cal Initiate (in concert with stat query) an Echo Response
calibration.
trig off Configures calibration to start immediately upon stat
query. (Test Port wake-up default) NOTE: Event trigger
“ext” not supported for PSD calibrations.
pair pairNo Specifies LAN PAIR to calibrate. Range is 1 to 4
where Pair 1 is TIA blue pair, Pair 2 is TIA orange pair,
Pair 3 is TIA green pair, and Pair 4 is the TIA brown pair.
(This configuration is not maintained if PSA Software is
closed. PSA Software wake-up default = 3.)
avg nAvgs Specifies the number of raw measurements to
average into each echo response finished measurement.
Range is 1 to 64. (Test Port wakeup default is 10).
?
Trigger_Mode (off |
ext)
+
pairNo
+
nAvgs
+
Timeout 10 | 100

Sifos Technologies PhyView PVA-3000 Specifications

General

Brand	Sifos Technologies
Model	PhyView PVA-3000
Category	Measuring Instruments
Language	English