ADTRAN 20 Ohm Adapter User Manual
75Ω / 120Ω ADAPTER
JOBAID
61225002L1-22B
0212
75Ω/ 120Ω
ADAPTER
WARRANTY
ADTRAN will replace or repair this product within the warranty period if
it does not meet its published specifications or fails while in service.
Warranty information can be found at www.adtran.com/warranty. USA
and Canadian customer Faxback: (877) 457-5007, Document 414.
For service, CAPS requests, or further information, contact one of the
following numbers:
ADTRAN, Inc.
Attention: International Department
901 Explorer Boulevard
Huntsville, Alabama 35806
USA
www.adtran.com
international@adtran.com
Asia Pacific-Beijing, China
8610 8857-6415 voice
8610 8857-6417 fax
sales.china@adtran.com
Asia Pacific-Hong Kong
852 2824-8283 voice
852 2824-8928 fax
sales.asia@adtran.com
Asia Pacific-Melbourne, Australia
61-3-9658-0500 voice
61-3-9658-0599 fax
sales.australia@adtran.com
European / Middle East / Africa
+49 6172-483-2304 voice Germany
+1 256-963-8695 voice - USA
+49 6172-483-2305 fax
sales.europe@adtran.com
Latin America / Caribbean
+1 954-474-4424 voice - USA
+1 256-963-8695 voice - USA
+1 954 474-1298 fax - USA
sales.latin@adtran.com
Mexico
+1 954-474-4424 voice - USA
+1 256-963-8695 voice - USA
+1 954 474-1298 fax - USA
sales.mexico@adtran.com
U.S. Headquarters
1 256 963-8000 voice
1 256 963-6300 fax
1 256 963-8200 fax back
international@adtran.com
GENERAL
The adapter converts a 120 Ω balanced (RJ-45) circuit to a
75 Ω balanced/unbalanced (BNC) circuit.
CONFIGURATION
Set the switches located on either side of the adapter to the
desired network settings. Use the same setting for both
switches.
■ To convert to a 75 Ω Balanced Circuit, set both switches
to the Open position.
■ To convert to a 75 Ω Unbalanced Circuit, set both
switches to the Earthed position.
1225002L1
TX
CUSTOMER
NETWORK
G.703 V. 2 8
RX
X.21
OPEN
EARTHED
Nx64K
RJ-45
Express 6530
CONTROL
V.35 / V.36SHDSL
100-240VAC 50/60Hz 35-80VDC 250mA
RX
1225002L1
OPEN
EARTHED
TX
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