B&B Electronics EIR-EXTEND - Quick Start Guide - Manual (Page 2)

Troubleshooting
What is the latency for the EIR-EXTEND?
These figures vary according to the VDSL speed. For a
typical speed of about 25Mhz, the small packet size
of 64 bytes is around 72 µs if two units are connected
back-to-back. For a maximum packet size of 1518 the
latency will be in the range of 430 µs with the same
configuration.
What type of cable should I use
to connect a pair of EIR-EXTENDs?
Wire size and length are not the only factors that
affect the connection. The surrounding environment
has an even bigger impact. VDSL is an analog signal
that is sensitive to noise. If there is a magnetic field
or electrical noise around the wire performance
will be affected.
Our stated distances are based upon ideal scenarios.
We use regular Gauge 24 wire and a dedicated
line. Real-world distance will vary according to the
conditions encountered on a user’s site. Filters and
splitters will affect performance, as will sharing the line
with voice.
What kind of protection can I use
between a pair of EIR-EXTENDs
on the RJ11 port?
The EIR-EXTEND’s common mode output does not
exceed 5VDC. Regular telephone line surge protection
should be good enough (48VDC). Common mode
capacitor impedance should be lower than 3pf or
performance will be affected (reducing speed and link
capability).
We do not provide telephone line surge protectors
at this time.
Document number – p/n r002 EIR-EXTEND - 1112
Recommended Accessories
and Power Supplies
External Power Supply
Industrial Power Supply
PS12VDC3P
MDR-40-24
1-888-948-2248 | Europe: +353 91 792444
www.bb-elec.com
707 Dayton Road | PO Box 1040 | Ottawa, IL 61350
Phone: 815-433-5100 | Fax: 815-433-5109
www.bb-elec.com | E-mail: [email protected]
© 2012 B&B Electronics Manufacturing Company
Industrial Ethernet Extender
DIN Rail Adapter (attached)
Power Supply
(required but not included)
Before you begin, be sure you have
the following:
First Things First...
EIR-EXTEND
Industrial DIN Rail Mounted
Ethernet Extender
http://www.bb-elec.com/EIR-EXTEND
Fast and easy on the web: www.bb-elec.com
http://www.bb-elec.com/EIR-EXTEND/
ACC
http://www.bb-elec.com/EIR-EXTEND/
ACC
Fast, Easy Answers
• First, check step 4.
• Then use your smart
phone to access complete
documentation on our
web site. Simply scan
the code to the right.