61246026L6-5B
Section 61246026L6-5, Issue 2
17
Table I. ADTRAN T200 Low Voltage HTU-R Specifications
Loop Interface
Modulation Type ............................. 2B1Q
Mode ................................................ Full Duplex, Echo Cancelling
Number of Pairs .............................. Two
Bit Rate ............................................ 784 kbps per pair
Baud Rate ........................................ 392K baud per pair
Service Range .................................. Defined by Carrier Service Area Guidelines
Loop Loss ........................................ 35 dB maximum @ 196 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)
HDSL Tx Signal Level ................... 13.5 dBm
Input Impedance .............................. 135
Ω
DS1 Channelization ........................ Channels 1-12 on HDSL Loop 1, Channels 13-24 on HDSL Loop 2
Customer Interface
4-wire DS1 (T1.403-compatible) (ITU-T I.431 compliant)
DS1 Signal Output Level ................ 0 or -15 dB
DS1 Input Signal Level ................... 0 to -22.5 dB
DS1 Line Coding ............................. AMI, B8ZS
DS1 Framing Format ...................... SF, ESF, Unframed
Power
Span-powered by HTU-C
Clock Sources
Clock Sources .................................. Internal, HDSL Loop Derived
Internal Clock Accuracy .................
±
25 ppm, (exceeds Stratum 4). Meets T1.101 timing requirements.
Tests
Diagnostics ...................................... Loopback (HTU-R), initiated with HDSL in-band codes, initiated with T1 NIU in-band
codes, initiated with HTU-C command, initiated manually, HTU-R control port. Self-Test.
Physical
Dimensions ...................................... 0.7" High, 5.5" Wide, 6.0" Deep
Weight ............................................. < 1 pound
Environment
Temperature .................................... Operating (Standard): -40
°
C to +70
°
C; Storage: -40
°
C to +85
°
C
Relative Humidity ........................... Up to 95% non-condensing
Part Number
HTU-R T200 Circuit Pack .............. 1246026L6
