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H4TU-R-402 L
The H4TU-R-402 List 1 remote unit (H4TU-R) functions as the remote end of a T1
transmission system. The H4TU-R, when used in conjunction with an HDSL4 line
unit (H4TU-C), transmits a 1.544 Mbps T1 payload a maximum distance of 12 kft
over two unconditioned copper pairs (26 AWG). Using two HD4-409 List 1 doublers
(H4Ds), the Carrier Service Area (CSA) reach can be extended to 34 kft. (see
"Specifications").
F
EATURES
• 1.568 Mbps full-duplex transmission over
two unconditioned copper pairs
• Status Light Emitting Diodes (LEDs) for
Digital Signal Level 1 (DS1) and HDSL4
• Craft port access for maintenance terminal
connection
• Bit Error Rate Tester (BERT)
• Ultra-low wander
• Supports both local and line powering
S
PECIFICATIONS
Operating Temperature
Operating Humidity
Maximum CSA Reach
HDSL4 Span Voltage
Power Consumption
CO Supply
Mounting
HDSL4 Line Rate
HDSL4 Output
Maximum Insertion Loss
Electrical Protection
Line Impedance
DS1 Pulse Output
DS1 Line Rate
DS1 Line Format
DS1 Frame Format
1
IST
-40°F to +149°F (-40° C to + 65° C)
5% to 95% non-condensing
34 kft. using 26 AWG: 12 kft. (span 1), 11 kft. (span 2), 11 kft. (span 3)
0, -185 Vdc, ±123 Vdc (voltage is applied across loop 1 and loop 2.)
5.2W
-48 Vdc nominal (-42.5 Vdc to -56.5 Vdc)
Narrow 200 mechanics shelf (half-width 400 mechanics)
784 kbps Overlapped Pulse Amplitude Modulation (OPAM) transmission
per pair
+14 dBm ±0.5 dBm, 135Ω
Span 1 = 47 dB at 196 kHz
Span 2 and Span 3 = 43 dB 196 kHz
Secondary surge and power cross-protection on all DS1 and HDSL4 ports
135Ω
0 dB, -7.5 dB, -15 dB
1.544 Mbps ±200 bps
Alternate Mark Inversion (AMI), Bipolar with 8-zero Substitution (B8ZS),
or Zero Byte Time Slot Interchange (ZBTSI)
Extended SuperFrame (ESF), SuperFrame (SF), or THRU (unframed)
• Generic and addressable repeater loopback
activation codes
• Lightning and power cross-protection on
HDSL4 and DS1 interfaces
• DS1 transmit and receive bridging jacks for
testing
• Remote provisioning
• Narrow 200 mechanics
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