Instruction manual

MXS-EVO - MANUAL
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MXS-EVO – Manual – Rev 1.7 - 11 -
is widely used in digital telecommunications worldwide, with the exception of USA and Canada
(where the T1 signal is in use) and Japan (where is in use the J1). The E1 link operates on two
separate coaxial cables (Rx and Tx).
Also in this case it’s possible perform a rapid frequency locking with the 2.048 MHz reference of
E1 signal, setting the Disciplining Mode voice to the frequency value.
Status Informations
MXS-EVO allows to view the status of the E1 module through the following values:
• Presence or absence of E1 signal
• Presence or absence of E1 framing
• SSM Quality (Rec. ITU-T G.704, see below) of the synchronization source
• Bit Error Rate is calculated by the BERT (see below)
• BERT Irq Array, binary array of interrupt requests that triggered errors generated in BERT (see below)
• Delay between the E1 PPS and the PPS generated by OCXO
Available Settings
MXS-EVO allows the possibility to set the device as a supplier of synchronization signal E1 (E1
Master), in case where it’s connected to valid synchronization sources (GPS, cesium oscillator,
etc.), or as a sevice receiver of E1 synchronization signal (E1 Slave). In the first case, it is also
possible to choose the quality of the source, according to the table of Recommendation G.704 (ITU-
T):
Quality
Level
Value
Displayed
Description of Sync Quality Level
0 Unknown Quality Unknown (existing synchronization network)
1 Reserved
2 G.811 Recommendation G.811
3 Reserved
4 SSU-A Synchronization Supply Unit A (Note 1)
5 Reserved
6 Reserved
7 Reserved
8 SSU- B Synchronization Supply Unit B (Note 1)
9 Reserved
10 Reserved
11 SETS Synchronous Equipment Timing Source (SETS)
12 Reserved
13 Reserved
14 Reserved
15 DON’T USE Do not use for synchronization
Note 1: In previous versions was used the terms "G.812 transit" and "G.812 local",
for more information, see Rec G.812 (ITU-T)
MXS-EVO allows to choose on which of the 30 (from 2 to 32, excluding 17) timeslots of the E1 frame transmit the
PPS signal. As default, the signal is sent and received on timeslot 32. The timeslots 1 and 17 are used to send sync and
control data by E1. The PPS is implemented by putting up only the LSB of the selected timeslot.
MXS-EVO allows to test the quality of the physical channel on which the E1 signal is transmitted activating the Bit