Aethra d2000pro User Guide

Quick Guide 

VX2000 

 

 

11 

 

HRX(%): Enter the variation percentage for the DM and SES thresholds. Only for 1 
channel bandwidth 
DM Threshold: Choose the number of errors per minute to consider it as degraded. 
Use the G.821 (4) default value when no other value is preferred. Only for line rate 
64Kbit/s 
SES Threshold: Choose the number of errors per second to be considered as 
severely errored. Use the G.821 (64) default value when no other value is preferred. 
Only for line rate 64Kbit/s 
Auto print: Choose the autoprint condition for the test results between: 
• 

Time interval: every 15 or 30 minutes 

• 

DM: when the DM threshold value is exceeded 

 

VX2000 adapter is fed directly by the D2000Pro, this cause a 
decrease of the battery duration. 

The test can be carried out both end-to-end and single end mode. In the first case is 
necessary to put another D2000Pro/VX2000 at the remote end of the line (fig. 1-2). 
In single-end mode, is necessary to carry out a loop over the line. The loop can be 
request to DCE with C141 criterion, through a specific command given to the DCE 
or carrying out a physical loop between TX side and RX side (see figure 1-1). 

 

Fig. 1-2 (end-to-end) 

When you have defined the setup for the Unframed BER test, continue as follows: 

 

Select ‘Use this setup for testing’ in the first SETUP page. 

 

Connect the instrument as displayed on the screen and 
press the RIGHT CURSOR key.