Clearing Vf Counters - Paradyne Comsphere 3920Plus Installation And Operation Manual

COMSPHERE 392xPlus Modems
EchoFreqOff
Phase Hts
Impul Hts
DropOuts
Retrains
Phas Jtr
NonLinear
FreqOffset
Gain Hts

Clearing VF Counters

The Clear command resets the retrain, impulse hits, gain hits, phase hits, and drop outs.
To clear the VF counters, select Clear.
3-22
Echo Frequency Offset displays the frequency offset of the far end echo. This
parameter appears for V.34, V.32 terbo, V.32bis, and V.32 modulations
(in 2-wire only).
Phase Hits reports the total hit count of sudden uncontrolled changes in the
phase of the receive signal for the past 15 minutes. This parameter appears for
V.32 terbo, V.32bis, and V.32 modulations (in 4-wire only).
Impulse Hits reports the total hit count of large burst or spikes that are larger
than normal peaks of random white noise for the past 15 minutes. This
parameter appears for V.32 terbo, V.32bis, and V.32 modulations (in 4-wire
only).
Drop Outs reports the total number of large reductions in channel gain for the
past 15 minutes. This parameter appears for V.32 terbo, V.32bis, and V.32
modulations (in 4-wire only).
Retrains displays the number of retrains over the last 15 minutes of operation.
The total 15-minute accumulation is updated every minute. This parameter
appears for V.32 terbo, V.32bis, V.32, and Trellis Multipoint modulations
(in 4-wire only).
Phase Jitter is the non-constant variation in the phase of the receive signal
carrier. The jitter is typically introduced by analog power supplies and is
predominantly sign waves with a frequency of 50 Hz or 60 Hz. This parameter
appears for V.32 terbo, V.32bis, and V.32 modulations (in 4-wire only).
Non-Linear Distortion displays distortion which is usually associated with
pulse-code modulation (PCM) compandor noise on the phone line. This
parameter appears for V.32 terbo, V.32bis, V.32, and Trellis Multipoint
modulations (in 4-wire only).
Frequency Offset reports the variation in all frequencies in the voice band. This
parameter appears for V.32 terbo, V.32bis, and V.32 modulations (in 4-wire
only).
Gain Hit reports the total number of rapid changes in the receiver power level
for the past 15 minutes. This parameter appears for V.32 terbo, V.32bis, and
V.32 modulations (in 4-wire only).
Status:VF
Display Clear
F1 F2 F3
April 1995 3920-A2-GN31-10