ADTRAN FNID User Manual

Page 13

Section 61245201L1-5, Issue 3

61245201L1-5C

Loop Interface:

Modulation Type ................................................. 2B1Q
Mode .................................................................... Full Duplex, Echo Cancelling
Number of Pairs .................................................. One
Bit Rate ................................................................ 784 kbps
Baud Rate ............................................................ 392K baud
Service Range ..................................................... Defined by Carrier Service Area Guidelines
Loop Loss ............................................................ 36 dB maximum @ 200 kHz
Bridged Taps ....................................................... Single Taps < 2 kft, Total Taps < 2.5 kft
Performance ........................................................ Compliant with Bellcore TA-NWT-001210
Return Loss ......................................................... 20 dB (40 kHz to 200 kHz)
DSL Tx Signal Level .......................................... 13.5 dBm
Input Impedance .................................................. 135

Ω

DS1 Channelization ............................................ Channels 1-12

Customer Interface:
4-wire DS1 (T1.403-compatible)
DS1 Signal Output Level .................................... Programmable through FT1 DP at 0, or -15 dB
DS1 Input Signal Level ...................................... 0, or -15 dB
DS1 Line Coding ................................................ AMI, B8ZS
DS1 Framing Format .......................................... SF, ESF

Power:
Span Power .......................................................... Selectable: less than -140 VDC (Class A2 with GFI circuit), or less than -190 VDC

(Class A2 with GFI circuit)

Locally Powered ................................................. -48 V at 75 mA

Clock Sources:
Clock Sources ..................................................... Internal, DSL Loop Derived
Internal Clock Accuracy .....................................

25 ppm, (exceeds Stratum 4). Meets T1.101 timing requirements.

Tests:
Diagnostics .......................................................... Loopback (FNID), initiated with DDS latching loopbacks, initiated with FT1 DP
command. Self-Test.

Physical:
Dimensions .......................................................... 2.25" High, 8.75" Wide, 10.25" Deep
Weight ................................................................. 4 pounds (standalone)

Environment:
Temperature ........................................................ Operating (Standard): -40

to +70

C; Storage: -40

to +85

Part Numbers:
Circuit Pack ......................................................... 1245201L1

Table F. FNID Unit Specifications