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Chapter 1 Introduction Installation and Operation Manual

1-2 Overview ASM-40CD Ver. 1.0

Figure 1-2

shows a power feeding application, where ASM-40CD/P card receives

the feed voltage from a standalone power supply unit, LRS-PS-FEED, connected

to the LRS-24 modem rack and supplies the voltage to two RPT repeaters.

Central Site

Remote Site

LRS-24

ASM-40CD/P

Router

ASM-40

RPT RPT

Remote Power Feeding

Up to 4 km (2.4 miles)

LRS-PS-FEED

PCM

Figure 1-2. ASM-40CD/P Providing Remote Power Feed to Repeaters

Features

ASM-40CD offers selectable data rates from 32 kbps to 2048 kbps, and

automatic rate detection in external mode for tail-end applications.

DTE Interface

The ASM-40CD DTE interface is provided using the appropriate interface module:

• LRSI-F-5 for V.24/RS-232 (64 kbps), V.35, X.21, RS-530, and V.36 interfaces

(via adapter cables)

• LRSI-F-14 for IR-ETH (Ethernet bridge) or IR-ETH/QN (Ethernet/Fast Ethernet

bridge with VLAN support).

Management

Full management of the local unit from an ASCII terminal or by a Unix HPOV

application via the LRS-24 Ethernet segment is available. Simultaneous control

and monitoring of local units is available without any impact or interference to

the user data being transmitted.

Diagnostics

ASM-40CD has real-time alarms indicating status of local and remote units.

ASM-40CD has V.54 diagnostic capabilities (local analog, remote digital and local

digital loopbacks) and an internal pseudo-random test pattern (511-bit) in

accordance with the ITU V.52 standard.

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RAD Data comm LRS-24 Spezifikationen Seite 16