Paradyne 392xPLUS EchoFreqOff, Phase Hts, Impul Hts, DropOuts, Retrains, Phas Jtr, NonLinear

Models: 392xPLUS

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COMSPHERE 392xPlus Modems

EchoFreqOff

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 Hts

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).

Impul Hts

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).

DropOuts

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

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).

Phas Jtr

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).

NonLinear

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).

FreqOffset

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 Hts

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).

Clearing VF Counters

The Clear command resets the retrain, impulse hits, gain hits, phase hits, and drop outs.

Status:VF

Display Clear

F1 F2 F3

To clear the VF counters, select Clear.

3-22

November 1996

3920-A2-GN31-30

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Paradyne 392xPLUS EchoFreqOff, Phase Hts, Impul Hts, DropOuts, Retrains, Phas Jtr, NonLinear, FreqOffset, Gain Hts