■
Frequency and amplitude measurements
■
Displays signaling bits and TS data bits
■
Monitor voice with internal speaker
■
Single channel DTMF digit decode
■
Measure clock synchronization problems (bit slips)
■
Round trip loop delay measurement
■
Performance analysis to ITU-T G.821
Overview
4
The BERT-20E1 test set delivers a powerful hand-held solution for
testing 2.048 Mbps E1 and 64 kbps digital circuits. It combines extensive
BER test functions along with signal quality measurements structured
behind an intuitive user interface. This combination of test capability and
user-friendly ergonomics simplifies installation and maintenance testing,
thus offering faster circuit turn-up and problem resolution. The BERT-
20E1 also provides more than 8 hours measurement operation from a
single charge, making it ideal for one-shift testing particularly in
environments where a convenient power supply may not be available.
Measurement Summary
The BERT-20E1 combines BER test functions along with signal
qualitymeasurement providing the ability to evaluate and troubleshoot 2
Mbps, n x 64 kbps and 64 kbps co-directional circuits.
■
Transmits both PRBS and Word test patterns. PRBS: 2
7
-1, 2
9
-1, 2
11
-1,
2
15
-1, 2
20
-1, 2
23
-1 as per ITU-T O.151, O.152, O.153. Word: two 64-bit
user defined patterns, all-ones, all-zeros, 1:1.
■
Fractional (Nx56 and Nx64 kbps) BER testing.
■
Full 2.048 Mbps BER testing.
■
Logic error insert – single and user selectable rate
■
BPV error insert – single and user selectable rate
■
FAS error insert – single and user selectable rate
■
CRC4 error insert – single and user selectable rate
■
Single channel insert for BER patterns and analog test tones
■
LLB mode – line loop-back mode with error analysis
■
TLB mode – test loop-back mode with error analysis
■
Displays standard alarm conditions with history LEDs
■
Displays major performance parameters
BERT_20E1_6172-871_UG_V02 05/05/2004 8:24 am Page 4
