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Analysis (T1/E1/T3/OC-3/STM-1) >
Software Applications >
Protocol Analysis
Overview |
Operation |
Control and Setup buttons
Test Results Display Features |
Comparison with other GL’s BERT Applications
Buyer's Guide |
Standard BERT |
Enhanced BERT
Overview
Multi-channel Bit Error Rate Testing (MCBERT) measures correctness of data received on T1/E1 lines/timeslots with stored data in
a reference file. The application can work in real-time with data currently being received on T1/E1 lines/timeslots, or off-line with data
stored in a file. The on-line T1/E1 testing can be done on full or fractional T1/E1 timeslots.
The following independent streams can be compared in real time to a chosen pattern file:
- Multiple 64kbps (56kbps) independent stream channels (need NOT be contiguous)
- A hyperchannel per T1/E1 (n x 64kbps timeslots, where n = 1..24 T1, 1..32 E1; contiguous timeslots)
- Multiple subchannels n x 8kbps (8k, 16k, …, 56k). For example, for T1 it could be up to 24 x 8 separate 8kbps subchannels (eight
per timeslot)
Operation:
Online Analysis:
The user chooses Reference file. (Program loads this to a 'circular' buffer.) Proper device
number and timeslots are selected to specify the online data to be verified. Mode of received data (64kbps, n x 64kbps or
n x 8kbps) is selected depending upon timeslot specification. Application is started and the MCBERT statistics are observed.
Offline Analysis
Data is captured into hard disc using applications like
Record data to a file. Captured file is selected using the 'Data from File' option and the reference file is selected using
'Pattern File' option.
Control and Setup buttons
- Time Slots: Allows user to select independent stream timeslots, or Hyperchannel timeslots, or subchannels to be
tested.
- Start, Stop: Start or Stop the actual testing of the incoming data on the selected timeslots, (Online), or begin file
comparison operation (Offline)
- Pattern File: User can choose any type of file to be used as the reference file. The chosen file will be used for
either online (real-time) testing or Offline (file comparison).
- Data from File: For Offline analysis, user can select any type of captured file to be compared against the reference
file.
- Reset: This button resets all the counter values to zero in the MCBERT statistics window.
- Log: This option allows user to save the Statistics View details in a text file. By default, the application creates 'bertlog.txt' in C:\bertlog.txt.
Test Results Display Features:
- Dev: Device port number (card number) - displays the GL Communications card number selected and in use for
this element of the test.
- TS: Stream timeslot selection - displays the chosen timeslot, which is monitored and compared with the received
data.
- SC: Stream sub channel selection - displays the specific sub channel, which is monitored and compared with the
received data.
- Average Error Rate: Multi-channel Bit Error Rate Testing (MCBERT) measures the correctness of data received on
T1/E1 lines according to the repetitive pattern file.
- Error Status: Displays SYNC if the received data currently matches with the reference data.
- SyncLoss Count: Displays number of transitions from SYNC state to noSYNC state.
- Error Count: Displays total number of single bit errors while in SYNC state.
- Error Free Seconds: Displays total seconds without any errors while in SYNC state.
- Error Seconds: Displays total number of seconds with one or more errors (while in SYNC), and includes
seconds during which there was noSync.
- SyncLoss Seconds: Displays seconds when MCBERT was in noSync or PreSync state.
Comparison with other GL’s BERT Applications
Enhanced BERT
- Supports real-time generation of patterns, and errors (Logic error, BPV) on framed, unframed, and fractional
- Send/Receive BER pattern with Tx and Rx settings coupled or independently controlled. Supports multiple cards simultaneously with
consolidated result view
- Supports sub-channels from 00 to FF along with contiguous & non-contiguous timeslot selections
- Supports both real-time and offline analysis of events graphically and in tabular formats
- Supports 16-static patterns as well as user-defined bit patterns
- Supports predefined and user-defined error insertions ranging from 0.01 to 1e-009
- Analysis and logs results in *.xml files
For more information, please visit Enhanced BERT page
Basic BERT
- Supports real-time generation of patterns, and errors (Logic error, BPV) on framed, unframed, full-frame, fractional, and fractional
with drop and insert frames.
- Sends/Receives BER pattern with Tx and Rx internally coupled
- Supports 16 static BER patterns (QRSS, 2^5-1, 2^9-1, 2^11-1, 2^15-1, 2^20-1, 2^23-1, All ones, All zeros, 1:1, 1:7, 3 in 24, CSU
Loop-Up (0001), CSU Loop-down (001), NIU Loop-UP (11000), and NIU Loop-Down (11100)
- Analysis and logs results in *.txt files
For more information, please visit T1/E1 Basic Bit Error Rate Test page
Buyer's Guide
Please Note: The XX in the Item No. refers to the hardware platform, listed in the optional hardware section
of the Buyer's Guide, which the software will be running on. Therefore, XX can either be DPT, DPE, PCT, PCE, HDT, HDE, DLT, DLE or UTE
depending upon the hardware.
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