1. Manuals
  2. Brands
  3. RFL Electronics Manuals
  4. Modem
  5. 9831
  6. Instruction data

RFL Electronics 9831 Instruction Data

Dual path programmable modem
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
I N S T R U C T I O N D A T A
The 9831 Dual Path Modem is a high performance module suitable for applications on 2-wire or 4-
wire pilot cable systems. It is capable of throughput speeds of up to 9600 baud using v.29 full duplex
communication over a 4-wire pilot cable system.
RFL Electronics Inc
(973) 334-3100
B e c a u s e R F L ™ a n d H u b b e l l ® h a v e a p o l i c y o f c o n t i n u o u s p r o d u c t i mp r o v e me n t , we r e s e r v e t h e r i g h t t o c h a n g e d e s i g n s a n d s p e c i fi c a t i o n s wi t h o u t n o t i c e .
RFL Electronics Inc
RFL 9831 Dual Path Programmable Modem
DESCRIPTION
9831
1
2
Power
TXD
CTS
RXD
DCD
0
9
1
Mode
8
2
Select
7
3
6
4
5
CFG
RFL 9831 MOD
105270
1
RFL 9831
March 8, 2004

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the 9831 and is the answer not in the manual?

Questions and answers

Summary of Contents for RFL Electronics 9831

  • Page 1 105270 DESCRIPTION The 9831 Dual Path Modem is a high performance module suitable for applications on 2-wire or 4- wire pilot cable systems. It is capable of throughput speeds of up to 9600 baud using v.29 full duplex communication over a 4-wire pilot cable system.

  • Page 2: Table Of Contents

    6.2..........................31 ONNECTION ROBLEMS RFL Electronics Inc RFL 9831 (973) 334-3100 March 8, 2004 B e c a u s e R F L ™ a n d H u b b e l l ® h a v e a p o l i c y o f c o n t i n u o u s p r o d u c t i mp r o v e me n t , we r e s e r v e t h e r i g h t t o c h a n g e d e s i g n s a n d s p e c i fi c a t i o n s wi t h o u t n o t i c e .

  • Page 3: Introduction

    Introduction This manual describes the features of the 9831 Dual Path/Redundant Modem and shows the user how to install and configure the unit for correct operation. This manual is intended for the use of technical personnel undertaking technical related engineering tasks such as installation, maintenance and configuration.

  • Page 4: General

    Each modem module contains up to two individual modems for providing the dual path capability. The 9831 modem along with the 9831 I/O module installs in any of the various available standard 98 Series chassis. All external connections are made to the 9831 I/O module installed at the rear of the 98 chassis.

  • Page 5: Technical Description

    • Back Connection 9831 I/O Card (RFL Part Number 106140-1) The 9831 Modem card is contained on a 3RU board, with a front panel width of 1 inch. This card can be mounted in any standard 98 Series chassis. The plug-on second Modem Board (if supplied) installs as a daughter board onto the Modem card.

  • Page 6: Directional Control Logic

    Red Data Carrier Detect (DCD) LED Depending on the current mode of operation, the CTS and DCD LEDs may have varying functions. For more details on the RTS and DCD modes, please refer to sections 4.1.1 and 4.1.2. RFL Electronics Inc RFL 9831 (973) 334-3100 March 8, 2004 B e c a u s e R F L ™...

  • Page 7: Back 9831 I / O Card

    3.3. The 9831 I/O Card (105265-1) The 9831 I/O card shown below is installed in the rear of the 98 chassis and provides all the external connections to the Modem card. See 3.3.1 and 3.3.2 for more information. Pin 1: DCD Out...

  • Page 8: Serial Communication Ports

    The upstream modem is primary modem supplied on the modem card and is connected to the MODEM #1 port on the 9831 I/O card. The downstream modem is the optional plug-on daughter board and is connected to the MODEM #2 port on the 9831 I/O card.

  • Page 9: Modem Card

    The FLASH can be programmed in-line, and the EEPROM configuration is programmed via the configuration utility provided on the PC and downloaded through the serial port. The 128Kbytes of external SRAM is provided for message buffering and various program variables storage. RFL Electronics Inc RFL 9831 (973) 334-3100 March 8, 2004 B e c a u s e R F L ™...

  • Page 10: Transmit And Receive Dsp Data Pumps

    The line isolating transformers are required on both transmit and receive sides in order to isolate the modem card from the line. These transformers are 1:1 and provide the two selectable line impedances of 600 ohms and 10K ohms. RFL Electronics Inc RFL 9831 (973) 334-3100 March 8, 2004 B e c a u s e R F L ™...

  • Page 11: Mode Selection

    Mode Selection The 9831 modem is not just a standard modem that is connected at each end of a 4-wire communication line. This modem can communicate in a number of different configurations, all of which are discussed in detail in this section of the manual.

  • Page 12: Dcd Framing

    This anti-collision has to be co-operative. Each 9831 modem card contains two modems and one input serial port (in redundant loop mode). Each modem can not tell where the data is coming from, either the input serial port or the other modem.

  • Page 13: Connection Modes

    The configuration mode allows the downloading and uploading of configuration information of each of the modems on a modem card. This is supported via the CFG serial port connection on the front panel of the 9831 modem card. The CFG port is a standard 9-pin D-type female connector. Once the modem card is switched into configuration mode, the serial port is hard coded into a defined set of parameters for communication with the PC-based 9831 Configuration Utility.

  • Page 14: Point To Point Mode (P-P)

    This connection mode is achieved with the use of two modems on a modem card. One modem sets up a single point to point link to the next 9831 up-stream and the second modem sets up a single point to point link to the next 9831 down-stream.

  • Page 15: Redundant Loop (Loop)

    9831 Modem Card 9831 9831 9831 9831 Modem Modem Modem V.29 Modem #1 Card Card (M/S) (P-P) (M/S) (M/S) or (P-P) Serial Device 1 Serial Device 2 Serial Device 3 MASTER REMOTE REMOTE The connection logic for this connection mode in the example above is as follows: Serial Device 1 is the master in the communication system.
  • Page 16 This connection mode is achieved with the use of two modems on a modem card. One modem card sets up a single point to point link to the next 9831 up-stream and the second modem card sets up a single point to point link to the next DM-30 down-stream.

  • Page 17: Redundant Point To Point

    If a 9831 modem module fails, again, the loop will be split into two, with the modems on one side of the failed unit communicating as a master/slave system and the units on the other side of the failed unit also working as a master/slave system.

  • Page 18: Configuration Guide

    Master / Slave operation Loop (Redundant) mode operation Point to Point Redundant operation Not Used RFL Electronics Inc RFL 9831 (973) 334-3100 March 8, 2004 B e c a u s e R F L ™ a n d H u b b e l l ® h a v e a p o l i c y o f c o n t i n u o u s p r o d u c t i mp r o v e me n t , we r e s e r v e t h e r i g h t t o c h a n g e d e s i g n s a n d s p e c i fi c a t i o n s wi t h o u t n o t i c e .

  • Page 19: Software Configuration

    A serial connection then needs to be established between a PC serial port and the CFG serial port on the front of the 9831. The CFG port is a standard 9-pin D-type female connector.

  • Page 20: Quick Start

    BCD rotary switch on the front panel to a valid connection mode. Connect the 9831 Modem (switched into “Configuration” mode) CFG port to the serial COM port on the PC, and select this COM port via the Comms Settings button. If two modems are supplied on the modem card, choose which modem to communicate with (refer to above screen).

  • Page 21: Main Form Fields

    9831 Modem. Use this field to adjust the 9831 Modem’s modulation mode and line speed. Click on the field and select a mode from the drop-down list, or tab to the field and select using the up/down arrow keys.
  • Page 22 “Normal” mode the 9831 Modem will keep DCD Active whenever a carrier is being received. In “Framed” mode the 9831 Modem will make DCD Active when a data frame is received, and then keep it active until no data frames have been received for a configurable timeout period (“DCD Off Delay”).
  • Page 23 Use these fields to adjust the receive level at which a signal is regarded as a valid carrier by the 9831 Modem. The threshold level is applied with hysteresis – the 9831 Modem won’t flag the carrier as valid until its level reached the “Receive On Level”, but then will keep it flagged valid until its level drops down to “Receive Off...

  • Page 24: Main Form Buttons

    Click this to load a 9831 Modem configuration from a file. See the “Load From File” section for more information. Click this to save a 9831 Modem configuration to a file. See the “Save To File” section for more information. Click this to upload a Configuration from an attached 9831 Modem. See the “Upload From Device” section for more information.
  • Page 25 Click this to adjust the 9831 Utility’s Communication Settings for talking to attached 9831 Modems. See the “Communication Settings” section for more information. Click this to display online help. Click this to exit the 9831 Utility. RFL Electronics Inc RFL 9831...

  • Page 26: Load From File

    5.2.6. Save To File You can save a 9831 Modem configuration to a file by clicking on the “Save To File” button on the main form. A standard Windows “Save” dialog will appear, allowing an existing or new file to be saved to. Only files with the “.hex”...

  • Page 27: Download To Device

    When in configuration mode, 9831 Modems have fixed communication settings of 19200 baud, 8 data bits, no parity, 1 stop bit, no handshake. These are also the default settings in the 9831 Utility, so generally only the “Comm Port” setting will need adjustment.

  • Page 28: Errors

    5.2.10. Errors The following error messages may appear in Error Pop-ups: Download error: Checksum Error The 9831 modem detected a bad checksum on a line of downloaded data. Download error: Modem The 9831 modem received a line of downloaded data...

  • Page 29: Troubleshooting

    1. Ensure that the modem card is connected firmly into the 98 chassis. 2. Ensure that the 9831 I/O has the correct input voltage applied to the correct pins. TB#1, pin1 is the positive power input, TB#2, pin 2 is the negative power input.
  • Page 30 If the RTS mode is switched carrier, whenever you turn on the RTS, the CTS LED should come on. If not, please return the modem to RFL Electronics for repair or replacement. Question 6: I am getting a number of errors on the link, what is the problem? 1.

  • Page 31: Connection Mode Problems

    Continue checking down the link that the up-stream modem RxD LED comes on and the down- stream TxD LED comes on. If you find a 9831 module that is not repeating the data, check the connection mode is set to Master/Slave and if so, return the modem for repair or replacement.
  • Page 32 NOTICE The information in this publication is proprietary and confidential to RFL Electronics Inc. No part of this publication may be reproduced or transmitted, in any form or by any means (electronic, mechanical, photocopy, recording, or otherwise), or stored in any retrieval system of any nature, unless written permission is given by RFL Electronics Inc.

Table of Contents