www.raisecom.com User Manual
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3.2.10 Sub-card of MT interface (RC3000-SUB-DMT)
¾ Feed ring voltage: AC 65±10 V 25 Hz
¾ Ring detect voltage: ≥35 V
¾ Ring detect frequency: 17-63 Hz
¾ Ring not detect voltage: ≤15 V
¾ 2W input impedance: normal and not ring status: 600Ω
¾ 2W input impedance: ring or abnormal status: 1000K Ω
¾ Gain from 2W to 4W: 0±0.5 db
¾ Frequency characteristic from 2W to 4w: 0±0.2 db
¾ Gain from 4W to 2W: -3.5±0.5 db
¾ Frequency characteristics from 4W to 2w: 0±0.2 db
¾ Return loss: 30-40 db
¾ Balance: 60-70 db
¾ Common-Mode Rejection Ratio: 60-70 db
¾ Power supply Rejection Ratio: 30 db
¾ Idle channel noise: 75 db
3.2.11 Sub-card of FXS polarity reversible user interface (RC3000-SUB-DSR)
¾ Feed: DC –48 V or DC -24 V
¾ Loop current: 18-24 mA standard value 20 mA
¾ Feed ring voltage: AC 65±10 V 25 Hz
¾ Ring stop time: 200 ms
¾ 2W input impedance: 200+680Ω
¾ Gain from 2W to 4W: 0±0.5 db
¾ Frequency characteristic from 2W to 4W: 0±0.2 db
¾ Gain from 4W to 2W: -3.5±0.5 db
¾ Frequency characteristic from 4W to 2W: 0±0.2 db
¾ Return loss: 30-40 db
¾ Balance: 60-70 db
¾ Common-Mode Rejection Ratio: 60-70 db
¾ Power Supply Rejection Ratio: Vcc: 30 db Vbat: 30 db
¾ Idle channel noise: 75 db
3.2.12 Sub-card of RS485 interface (RC3000-SUB-D485)
¾ Physical characteristic: comply with RS485 interface recommendation
¾ Interface type: RJ45 connector
¾ Interface rate: Maximum rate 19.2KBps
3.2.13 Sub-card of Ethernet interface (RC3000-SUB-DETHB)
¾ RJ-45 interface of UTP, the longest transmission distance of 5-category cable is 100m.
¾ Comply with IEEE 802.3 recommendation, 10M/100M auto-negotiation, full/half duplex
auto-negotiation.
¾ Support IEEE 802.1d Spanning Tree relay, IEEE 802.1q VLAN packet relay
¾ Maximum Ethernet frame size is 1522 bytes
¾ Support flow control of IEEE 802.3x in full duplex
¾ Support flow control of backpressure in half duplex
¾ AUTO-MDI/MDIX
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