
306 Chapter 11
E1 Analyzer
Making E1 Measurements
3 [E1 Analyzer]
4 [Get Started/ Test
Mode]
5 [Hard Loop/End-End] Use this test mode to perform measurements such
as BERT on an E1 circuit. The far end signal must
be derived from either a hard loop or from a
second test set. The E1 circuit is not available for
service when using this test mode.
6 [Full E1 BERT] Select this to perform a BERT test on a full E1
Circuit.
7 [Auto Config] Enables the Auto Configuration buttons.
8 [Start Primary Auto
Config]
Causes the test set to analyze the incoming E1
signal and align the setup choices to the properties
of that signal.
9 [Back]
10 [Setup]
11 Setup Rx input.
a. [Rx Input]
b. [Terminate]
The test set must be connected to a jack that
interrupts the E1 circuit.
12 Setup line code.
a. [Line Code]
b. [HDB3]
This assumes the circuit is designed for HDB3
(High Density Bipolar 3). An E1-line code in
which bipolar violations are deliberately inserted
if user data contains a string of 4 or more
consecutive zeros.
13 Setup framing.
a. [Framing]
b. [PCM31 + CRC4]
This assumes that the circuit has been designed for
PCM31 + CRC4.
14 Setup pattern.
a. [Pattern]
b. [QRSS]
Step Notes
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