9500 MXC User Manual
3DB 23063 ADAA - Rev 004 July 2007 Vol. IV-7-31
6. Select the required tributary impedance/encoding.
• For an E1 Tributary Type selection, the impedance options are 75 ohm
unbalanced or 120 ohms balanced.
• For a DS1 Tributary Type selection options are presented for encoding and
tributary line length. The encoding options are AMI or B8ZS. Length is
entered in whole feet, up to a 655 ft maximum. Line impedance is fixed at
100 ohms balanced.
An AMI or B8ZS selection is fixed for tribs 1-8 and separately for tribs 9-16,
which is NOT currently indicated in CT (CT allows AMI or B8ZS selection
on a trib-by-trib basis). Tribs 1-8 must all be set for AMI or B8ZS. Similarly,
tribs 9-16 must all be set for AMI or B8ZS.
7. Enter a name (optional - recommended) for the module by right-clicking in
the relevant DATA module in the System Summary screen, selecting
Rename, and typing. The default name is ‘unnamed’.
8. Commit the configuration by clicking
Send.
Next Step: Go to the Circuits screen to configure circuit cross-connects. Refer to
Procedure for Configuring Circuits - Traffic, Volume IV, Chapter 9.
DAC 3xE3/DS3M Configuration
DAC 3xE3/DS3M supports multiple operational modes. It may be configured as:
• A 3xE3/DS3 trib card.
• An E13 or M13 multiplexer to multiplex 2xE3 or 2xDS3 customer interfaces
to/from an E1/DS1 bus backplane.
• Transparent E3 to multiplex 2x34 Mbps customer interfaces to/from an E1 bus
backplane.
It has three Tx/Rx interfaces on paired, unbalanced 75 ohm mini-BNC female
connectors. All three are active for a 3xE3/DS3 configuration. For the E13, M13
and Transparent E3 modes, only Tx/Rx 1 and Tx/Rx 2 are active.
For more information on functions, refer to DAC 3xE3/DS3M on page 3-35,
Volume II, Chapter 3.
For protected DACs LOS on any trib interface is a switching condition. Ensure all
traffic-carrying tribs are commissioned (commissioned tick-box for relevant trib(s)
is ticked). Equally, so that invalid alarms are not raised, ensure that all tribs not
carrying traffic are not commissioned (not ticked).
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