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150-409-115-05, Issue 5 Technical Specifications
EDU-409 List 1 January 26, 2000 21
TECHNICAL SPECIFICATIONS
HDSL
Line Code 1040 kbps, 2B1Q full duplex
Output +13 dBm
Line Impedance 135
Ω
Resistive Signature Input/Output: 25 Ω (maximum)
Line Output DC: 25 Ω (maximum)
Start-up Time (per span) 15 seconds (typical), 30 seconds
(maximum)
Line Clock Rate
Internal Stratum 4 clock
Power Consumption
3.0 W (nominal), 3.2 W (maximum)
Maximum Provisioning Loss
35 dB @ 260 kHz, 135 Ω
Wander and Jitter
Nominal - The absence of an HDSL framer from the EDU-409 List 1
reduces the Doubler Unit’s effect on a circuit’s overall wander and jitter to
second order insignificance when compared to the wander and jitter of
other circuit modules.
Latency
80 microseconds (maximum either direction)
Mounting
Single 239 T1 Mechanics slot
Electrical Protection
Secondary surge and power cross protection on all HDSL ports