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ASM-10/8
Short Range Modem
Installation and Operation Manual
Notice
This manual contains information that is proprietary to RAD Data Communications. No part of this
publication may be reproduced in any form whatsoever without prior written approval by RAD Data
Communications.
No representation or warranties for fitness for any purpose other than what is specifically mentioned in
this manual is made either by RAD Data Communications or its agents.
For further information contact RAD Data Communic
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Warranty This RAD product is warranted against defects in material and workmanship for a period of one year from date of shipment. During the warranty period, RAD will, at its option, either repair or replace products which prove to be defective. For warranty service or repair, this product must be returned to a service facility designated by RAD. Buyer shall prepay shipping charges to RAD and RAD shall pay shipping charges to return the product to Buyer. However, Buyer shall pay all shipping ch
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Safety Warnings The exclamation point within a triangle is intended to warn the operator or service personnel of operation and maintenance factors relating to the product and its operating environment which could pose a safety hazard. Always observe standard safety precautions during installation, operation and maintenance of this product. Only a qualified and authorized service personnel should carry out adjustment, maintenance or repairs to this instrument. No adjustment, maintenance or repair
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Declaration of Conformity Manufacturer’s Name: RAD Data Communications Ltd. Manufacturer’s Address: 24 Raoul Wallenberg St. Tel Aviv 69719 Israel declares that the product: Product Name: ASM-10/8 Conforms to the following standard(s) or other normative document(s): EMC: EN 55022 (1994) Limits and methods of measurement of radio disturbance characteristics of information technology equipment. EN 50082-1 (1992) Electromagnetic compatibility – Generic immunity standards for residential, commercial
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Quick Start Guide Installation of ASM-10/8 should be carried out only by an experienced technician. If you are familiar with ASM-10/8, use this quick start guide to set it up for operation. Perform the following steps for both the local and the remote units: QS .1 Installing ASM-10/8 Set the ASM-10/8 internal jumpers and switches correctly for the chosen Switch and operating mode. Refer to the table below for the possible settings. Jumper Settings Make sure that the power cord is disconnected b
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Quick Start Guide ASM-10/8 Installation and Operation Manual Jumper Possible Settings Default Setting RPF ON ON OFF PIN 18 EN EN DIS PIN 21 EN EN DIS CHAS GND CONN CONN DIS RCV IMPD 150 150 300 600 HIGH CTS-DLY 0 msec 8 msec 8 msec 64 msec Data Rate 0 – 19.2 1 – 14.4 2 – 9.6 9.6 3 – 7.2 4 – 4.8 5 – 3.6 6 – 2.4 7 – 1.2 XMT TIMING INT CK INT CK EXT CK RCV CK ASYNC V.54 DLY ON OFF OFF DIP Switch S1 For future use S2 OFF S3 ON (10 BIT) S4 OFF (10 BIT) 2 Installing ASM-10/8
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ASM-10/8 Installation and Operation Manual Quick Start Guide Connecting the Line Connecting the Interfaces ➤ ➤ ➤ ➤ To connect the line: 1. Connect the transmit pair to the terminals marked XMT. 2. Connect the receive pair to the terminals marked RCV. 3. Connect the ground wire to the terminal designated GND (optional). Connecting the DTE ➤ ➤ ➤ ➤ To connect the DTE: • Connect the DTE to the DTE connector on the rear panel of ASM-10/8. Connecting the Power ➤ ➤ ➤ ➤ To connect the power: 1. Connect
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Quick Start Guide ASM-10/8 Installation and Operation Manual 4 Operating ASM-10/8
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Chapter 1 Introduction This chapter describes the basic physical and functional features of the ASM-10/8 short-range modem, as well as some typical applications. It discusses the following topics: • An overview of the modem • Physical description • Functional description • Technical specifications. 1.1 Overview ASM-10/8 is a short-range modem, which operates over unconditioned General lines. It can function in full or half-duplex mode with synchronous or asynchronous transmission format. ASM-1
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Chapter 1. Introduction ASM-10/8 Installation and Operation Manual The following diagrams illustrate the ASM-10/8 in a variety of configurations: Applications • Point-to-point applications • Multipoint applications • Tail-end for DDS service applications • Star applications. 4-wire up to 55 km ASM-10/8 ASM-10/8 1.2 - 38.4 kbps Figure 1-1 ASM-10/8 Point-to-Point Application XMT Pair Slave 1 XMT Impedance – 150 Ω RCV Impedance – High RCV Pair ASM-10/8 ASM-10/8 Master XMT Impedance – LOW RCV Im
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ASM-10/8 Installation and Operation Manual Chapter 1. Introduction Digital Service Network ASM-10/8 ASM-10/8 EXT CLK EXT CLK V.54 DLY-ON V.54 DLY-ON ASM-10/8 ASM-10/8 RCV CLK RCV CLK V.54 DLY-OFF V.54 DLY-OFF Figure 1-3 ASM-10/8 Tail-End for DDS Service Application ASM-10/8 Slave ASM-10/8 ASM-10/8 Master Slave ASM-10/8 Slave Figure 1-4 ASM-10/8 Star Application In the star application, set the XMT and RCV impedance of all the modems to Note 150W. The ASM-10/8 modem uses conditioned diffe
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Chapter 1. Introduction ASM-10/8 Installation and Operation Manual ASM-10/8 communicates over lines in synchronous mode only. When set to the asynchronous mode, ASM-10/8 performs an asynchronous to synchronous conversion in compliance with ITU V.14 bis standard. The unit has line protection circuits against lightning and power surges. ASM-10/8 V.54 diagnostic capabilities include: • Local digital loopback (DIG), activated by the front-panel push button • Remote digital loopback (REM), activated
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ASM-10/8 Installation and Operation Manual Chapter 1. Introduction 1.2 Physical Description ASM-10/8 is available as a standalone desktop unit or as a card for the ASM-MN-214 hub. Figure 1-5 shows the 3D view of the ASM-10/8 standalone unit. Figure 1-5 ASM-10/8 Standalone Unit The front panel includes six LEDs, which display the status of power, data flow, control signals and diagnostics. Three front-panel switches control the three loopback modes. For detailed description of the front pan
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Chapter 1. Introduction ASM-10/8 Installation and Operation Manual 1.3 Functional Description This section contains functional descriptions of the circuit blocks of General ASM-10/8, primarily those circuits which are required for setting the desired modem configuration (see Figure 1-6). The encoder modulates the input data from the DTE using the conditional Encoder diphase modulation technique. The encoder can be configured to operate in one of the following different modes: • 4-wire full du
