
Chapter 1 Introduction Installation and Operation Manual
1-8 Technical Specifications ASM-40 Ver. 1.0
Connector
DB-15 or 5-clip terminal block:
• 100Ω for 1544 kbps and 1536 kbps
balanced
• 120Ω for 2048 kbps and
1920 kbps balanced
BNC coax:
• 75Ω for 2048 and 1920 kbps unbalanced
DTE Interface
Data Rate
32, 64, 128, 192, 256, 384, 512, 768, 1024,
1536, 1544, 1920, or 2048 kbps
G.703-HDB3: 128, 256, 512, 1024, or
2048 kbps
G.703 Codirectional: 64 kbps
Signal Attenuation
(G.703-HDB3 Interface)
6 dB
Output Level
(G.703-HDB3 Interface)
±3V
Type and Connectors
• V.24/RS-232: 25-pin, D-type, female
• V.35: 34-pin, female
• X.21: 15-pin D-type, female
• RS-530: 25-pin, D-type, female
• V.36/RS-449: via adapter cable converting
between RS-530 connector and 37-pin,
D-type, female connector
• G.703-HDB3: 15-pin D-type, female or BNC
coax
• G.703 Codirectional: 5-clip terminal block
or RJ-45
• IR-ETH: RJ-45 or BNC coax
• IR-ETH/QN: RJ-45
• IR-IP: RJ-45
Timing
Transmit & Receive Clocks
Derived from 3 alternative sources:
• Internal oscillator
• External from the DTE
• Receive clock derived from the receive
signal, looped back as a transmit clock
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