Crocus CNV Step-by-step configuration
User manual 65
5.4 Configuring the onboard G703 interface
crocusIfConv<2m/Nx64><Tt/Cv>/g703OnBoard/coding default: HDB3
Use the coding attribute to set the G703 interface encoding mode. Two encoding modes are available:
Value Description
AMI
Alternate Mark Inversion is a bipolar code with no zero substitution.
HDB3
High Density Bipolar 3 is a modified bipolar code.
With HDB3 encoding, more than three consecutive zeroes occurring in the data are
replaced by a substitution word. This to ensure a high pulse density. Therefore,
data links using the HDB3 code can carry data patterns with a low 1 density. Most
of the G703 applications use HDB3 encoding.
crocusIfConv<2m/Nx64><Tt/Cv>/g703OnBoard/longHaul default: enabled
The onboard G703 interface is equipped with a driver. This enables you to cover long distances. The
driver can be enabled or disabled.
The distances that can be covered are in the order of:
• 2.5 km using a cable with a diameter of 0.6 mm
• 1.25 km using a cable with a diameter of 0.4 mm.
Important remark
On a Crocus 2M CNV CV and on a Crocus Nx64 CNV CV in unframed mode, it is not possible to start an
RDL test or receive a DL test from the remote side when the device is strapped in short haul (i.e. longHaul
= disabled). However, it is possible to start a DL test directly on the device itself.
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