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CORPORATE OFFICE
901 Explorer Boulevard
Huntsville, AL 35806
800 9ADTRAN
Local: 256 963-8000
Fax: 256 963-8699
Fax Back: 256 963-8200
http://www.adtran.com
email: info@adtran.com
TELCO TECHNICAL
SUPPORT
800 726-8663
REGIONAL OFFICES
Irvine, CA
800 788-5408
Denver, CO
800 471-8651
Atlanta, GA
800 332-6945
Kansas City, KS
800 471-8649
Philadelphia, PA
800 471-8656
Dallas, TX
800 471-8648
Canada
800 232-6811
ADTRAN is an ISO 9001
registered company.
Printed in U.S.A. on recycled paper
61245.002L6-8A May 1998
©ADTRAN, Inc. 1998
Product Specifications
LOOP INTERFACE
Modulation Type: 2B1Q
Mode: Full duplex, echo cancelling
Number of pairs: Two
Bit Rate: 784 kbps per pair
Baud Rate: 392 kbps per pair
Service Range: Defined by CSA guidelines
Loop Loss: 36 dB maximum @ 200kHz
Bridged Taps: Single Taps <2 kft, total taps
≤ 2.5 kft
Performance: Compliant with Bellcore
TA-NWT-001210
HDSL Tx Signal Level: 13.5 dBm
Imput Impedance: 135Ω
Return Loss: 20 dB (40 kHz to 200 kHz)
DIAGNOSTICS
Local loopback (HTU-C)
Remote loopback (HTU-R)
Troubleshooting screen
MOUNTING
Litespan 2000 DBA, Litespan 2012 CBA, or
an ONU CBA
ENVIRONMENT
Operating (standard): –40° to 70°C
Storage Temperature: –40° to 85°C
PHYSICAL
Dimensions: 4.42" H, 0.84" W, 10.4" D
Weight: Less than one pound
Humidity: Up to 95% non-condensing
POWER
Max Power Dissipation HTU-C and
HTU-R: < 4 watts
Span Power: –135 VDC internally
generated from the –48 VDC
Ordering Information
EQUIPMENT
AHT1U HTU-C for DSC Litespan
AHT1U Narrowband
Wideband Wiring................................1245002L6
Call for individual module information.
Specifications subject to change without notice.
PART #
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