T
H2TU-R-402 L
HE
The H2TU-R-402 List 7A1 (H2TU-R) functions as the remote end of a repeaterless
T1 transmission system when connected to a HiGain
HDSL2 line unit (H2TU-C). Setting new standards for interoperability and efficiency,
HiGain HDSL2 modules transmit 1.544 Mbps T1 payload on one unconditioned
copper pair over the full Carrier Service Area (CSA) range.
F
EATURES
Front panel: status LEDs, craft port for
maintenance screen access, DS1 bridging jacks
and LBK pushbutton for activating loopback
commands
Maintenance screens for inventory, provisioning,
performance monitoring, and troubleshooting,
including:
• Loopshield queries via TL1/FDL capability
• Remote Frame Ground Detect ability
• Loop attenuation and insertion loss reporting
S
PECIFICATIONS
Operating Temperature
Operating Humidity
Line Power Consumption
Electrical Protection
Mounting
HDSL2 Line Rate
HDSL2 Output
DS1 Pulse Output
DS1 Receiver Sensitivity
Maximum Insertion Loss
Maximum Loop Attenuation
DS1 Line Rate
DS1 Line Format
DS1 Frame Format
To ensure proper operation, the H2TU-R-402-L7A1 requires
either the LPS-H2C-L7A, H2TU-C-231-L7A2,
H2TU-C-319-L7A2, or H2TU-C-388-L7A2 to be used as the
corresponding line unit.
7A1
IST
• HDSL2 Tip/Ring reversal indication
• Power Back Off (PBON and PBOC) for
• Enhanced lightning protection
Power: local or line
Sealing current option
-40°F to +149°F (-40°C to + 65°C)
5% to 95% non-condensing
2.8 Watts
Secondary surge and power cross-protection on
all DS1 and HDSL2 ports
Any 400 or 200 mechanics shelf
1.552 Mbps Overlapped Pulse amplitude
modulated Transmission with Interlocking
Spectra (OPTIS)
+16.5 dBm ±0.5 dBm, 135Ω
0 dB, -7.5 dB, -15 dB
36 dB at 100Ω
35 dB at 196 KHz, 135Ω
28 dB
1.544 Mbps ±200 bps
Alternate Mark Inversion (AMI) or Bipolar with
8-zero Substitution (B8ZS)
Extended SuperFrame (ESF), SuperFrame (SF),
or Unframed (UNFR)
®
, Soneplex
configuring HDSL2 transmit power to reduce
crosstalkAutomatic circuit retrain to ensure
quality service
®
, or LoopStar
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