Sifos Technologies PhyView PVA-3000 User Manual

PVA-3000 Reference Manual
December 2, 2019 Sifos Technologies
Page
76
4.4. Test Port Active Impairment Configuration
Active impairment features of a PhyView Analyzer test port were described earlier in Sections 2.2.9 and 2.2.10. The
following commands provide configuration of these resources. These commands accept the broadcast configuration
where port= 99,99.
Command
Port
Command Parameters
Query
Returned
Parameters
pva_noise
<port>
<on | off> <low | std | high | dB noisepwr>
?
?
OFF | ON |
DISABLED
+
noisepwr
AUTO |
FIXED txgain
Configures the PVA-3000 amplitude noise impairment
to a specified state and power level. Nominal or
standard impairment level is 40 mVpp with range from –
6 dB to +21.5 dB relative to that nominal level. Note:
Noise source is inhibited if pva_mismatch is in the
‘impair’ state. 25 mVpp would correspond to –4 dB.
on Activates the amplitude noise source by returning
source to most recently used gain level.
off Deactivates the amplitude noise source by setting
gain to zero. (wake-up default)
low Configures the amplitude noise source to –4 dB
relative to 40mVpp noise
std Configures the amplitude noise source to 40mVpp
noise on the Test Port output
high Configures the amplitude noise source to +4 dB
relative to 40mVpp noise
dB noisepwr Configures the amplitude noise at the
Test Port from –6 dB to +21.5 dB (0.5 dB steps)
relative to 40mVpp. (wake-up default is 0 dB)
pva_tx_clk
<port>
normal | offset <ppm_offset> | jitter < low | std | high |
dB jitter_pwr>
?
NORMAL |
OFFSET
+
ppm_offset |
JITTER
+
jitter_pwr
Configures Test PHY transmitter signals to operate at a
specified frequency offset or to jitter at a specified
power level. Offset frequencies are specified in ppm.
Jitter is specified in dB relative to 1.4nsec pk-pk. Jitter
power will follow a profile where jitter above 5KHz is
~13.5 dB below total jitter power.
normal Configures the Test PHY to operate with
nominal clock frequency and zero jitter (wake-up
default)
offset Specify a transmit frequency offset level from
the Test PHY.
ppm_offset Transmit frequency offset level from the
Test PHY in ppm. Range is –115, -100, -50, 0, +50,
+100, and +115.
jitter Specify a transmit frequency jitter (power) level
from the Test PHY.
low Program jitter level to –3 dB relative to 1.4 nsec
pk-pk.
std Program jitter level to ~1.4 nsec pk-pk.
high Program jitter level to +3 dB relative to 1.4 nsec
pk-pk.
dB jitter_pwr Program jitter level in dB relative to 1.4
nsec pk-pk. Range is –6 dB to + 24 dB in 0.5 dB
steps.)

Sifos Technologies PhyView PVA-3000 Specifications

General

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