Table 14. ADTRAN H2TU-C Specifications

 

 

 

Loop Interface

 

 

Modulation Type

16 TC PAM

Mode

 

Full duplex, partially overlapped echo canceling

Number of Pairs

 

One

Line Rate

1.552 mbps

Baud Rate

517.333 k baud

Service Range

Defined by CSA guidelines

Loop Loss

35 dB maximum @ 196 kHz

Bridged Taps

 

Single Taps < 2 kft., total taps ≤2.5 kft.

Performance

Compliant with T1.418-2000 (draft)

H2TU-C Transmit Power (Data) Level

16.6 ±0.5 dBm (0 to 450 kHz)

H2TU-C Transmit Power (Activation) Level ...

16.3 ±0.5 dBm (0 to 350 kHz)

Input Impedance

135 Ω

Maximum Loop Resistance

 

900 Ω per span

Return Loss

.......................................................

12 dB (50 to 200 kHz)

 

 

 

 

Power

 

 

 

Power Consumption

+5 V: 1.7 watts typical; 48 V (includes H2TU-C and H2TU-R)

Span Power

 

–190 VDC internally generated from the –48 VDC switch battery

Fusing

 

–48 VDC (switch battery) is current-limited by a 500 mA Slo-Blo®subminiature

 

 

surface-mount fuse. +5 VDC is current-limited by a 3 A quick-acting

 

 

subminiature surface-mount fuse.

 

 

 

 

Clock

 

 

 

Clock Sources

Internal, DSX-1 derived

Internal Clock Accuracy .................................... ± 25 ppm, (exceeds Stratum 4). Meets T1.101 timing requirements

 

 

 

 

Tests

 

 

 

Diagnostics

Local loopback (H2TU-C), remote loopback (H2TU-R)

 

 

 

 

Physical

 

 

 

Mounting

 

Litespan 2000 CBA, Litespan 2012 CBA, or an ONU CBA

Dimensions

 

4.42 in. high x 0.84 in. wide x 10.4 in. deep (11.22 cm x 2.13 cm x 26.4 cm)

Weight

 

Less than one pound

 

 

 

Environment

 

 

Temperature

Operating (standard): –40°C to +70°C

 

 

 

Storage: –40°C to 85°C

Humidity

 

Up to 95% noncondensing

 

 

 

Compliance

 

 

Bellcore GR-1089-CORE (Class 2), ANSI T1.418-2002

NRTL listed to the applicable UL standards

 

 

 

 

 

Part Number

 

 

1221002L2

.........................................................

Asynchronous H2TU-C Line Card Unit (AHDSL2), Narrowband

 

 

 

 

 

 

61221002L2-5B

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ADTRAN AHDSL2 specifications Adtran H2TU-C Specifications, Loop Interface

AHDSL2 specifications

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