Verilink APS 2000 T1 Line Protection (880-502411-001) Product Manual - Manual (Page 79)

Verilink APS 2000 User Manual -1
Appendix
A
Specifications
SCC 2120 and TAC 2110
Interfaces
DS-1 Equipment Network
Line Rate 1.544 Mbps
±
32 ppm 1.544 Mbps
±
32 ppm
Line Code AMI, B8ZS AMI, B8ZS
Framing Formats Unframed, SF, ESF Unframed, SF, ESF
Impedance 100 ohms
±
5% 100 ohms
±
5%
Input Level 3.0 V
±
0.3 V base-to-peak, attenuated by
up to 655 feet of cabling
DS-1 attenuated by 0 to 27.5 dB
Pulse Width 324
±
45 nanoseconds at half amplitude 324
±
45 nanoseconds at half amplitude
Pulse Afterkick 10% to 30% of pulse peak 10% to 30% of pulse peak
Output Level DSX-1 into 100 Ohms 3.0 V
±
0.3 V base-to-peak
Output LBO N/A 0, 7.5, or 15 dB (0 to 3000 feet), selectable
Pulse Density
Enforcement
N/A 12.5% average density and 80 zeros, AT&T
62411, 15 zeros, 80 zeros, or none
Pre-equalization 0 to 655 feet, selectable N/A
Surge Protection Up to 400 Vp-p Up to 400 Vp-p
Loopbacks Equipment (ELB Controlled via ESF Data Link
Repeater (RLB) Controlled via ESF Data Link
Line (LLB) Controlled via in-band codes, or TABS or ANSI
T1.403 commands on the ESF Data Link
Payload (PLB) Controlled via TABS or ANSI T1.403 commands on
the ESF Data Link
All loopbacks are accessible via the ASCII terminal.
Alarm rela Contacts Provided Normally open, normally closed and common lead
Configuration Form C
Contact Rating 1A at 52 V
dc
or 2A at 26 V
dc
, non-inductive
Closure Conditions SCC/CSU hardware failure
LOS from network or DS-1 equipment
Loss of synchronization from network
Loss of synchronization from equipment
Loopback in progress
Loss of power
Removal of CSU from shelf
LOF
Excessive BER
Excessive BPV (>10
-4 )