Paradyne 392xPLUS operation manual Test Branch

COMSPHERE 392xPlus Modems

Table 3-8

(2 of 2)

Valid Ranges for VF Thresholds

VF Thresholds

Valid Ranges

Default Values

Far Echo	0±38 dBm	Above ±20 dBm
Frequency Offset	1 Hz to 15 Hz	Above 4 Hz
Phase Jitter	1 degree to 45 degrees	Above 9 degrees
Phase Hits	1 to 255 hits	20 hits per 15 minutes
Impulse Hits	1 to 255 hits	20 hits per 15 minutes
Gain Hits	1 to 255 hits	20 hits per 15 minutes
Drop Outs	1 to 255 dropouts	20 dropouts per 15 minutes

Test Branch

The Test branch of the Top-Level menu allows you to initiate various modem tests. Use these tests if you are having data communication problems, such as periodic character loss, random errors, or constant format errors. By the process of elimination, you can usually isolate the fault in your system.

There are six selections under Test: Abort, Self (Self-Test), Loc Analog Loop (Local Analog Loopback), Rem Digital Loop (Remote Digital Loopback), Loc Digital Loop (Local Digital Loopback), and Pattern. The only tests that can operate concurrently on a single modem are Pattern with a Local Analog Loopback and Pattern with a Remote Digital Loopback. If any test is operating, besides the two combinations just mentioned, it must be canceled before starting another test.

The Test branch only initiates and cancels tests. If parameters need to be set, refer to the Tests section in Chapter 4.

ªStatusº

Status

Configure

PList

Control

SubHS

Call_Setup

Tlk/Data

Security

Remote

Test

Abort	Self	Loc_Analog_Loop Rem_Digital_Loop	Loc_Digital_Loop	Pattern
		Port	Port	Port
		Select	Select	Select

3-54 November 1996 3920-A2-GN31-30