Telenetics Network Card DSP9612RM User Manual

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DSP9612RM Flash Poll  
Rack-Mount Modem  
User’s Guide  
00490519000 Rev. A  
 
Contents  
CHAPTER 1 INTRODUCTION .........................................................5  
FEATURES ................................................................................................6  
APPLICATIONS .........................................................................................7  
ANCILLARY DOCUMENTATION ................................................................7  
CHAPTER 2 INSTALLATION ..........................................................9  
UNPACKING YOUR HARDWARE...............................................................9  
ADDITIONAL ITEMS YOU NEED ...............................................................9  
HARDWARE OVERVIEW .........................................................................10  
Front View.........................................................................................10  
Component View ...............................................................................11  
INSTALLATION SUMMARY .....................................................................12  
CONFIGURING THE MODEM ...................................................................12  
High-Speed (Fast Poll) Mode ...........................................................12  
Low-Speed (FSK) Mode....................................................................18  
INSTALLING THE MODEM IN THE UNIVERSAL DATA SHELF...................23  
CONNECTING TO A TRANSMISSION LINE................................................25  
Modular Jack Connectors.................................................................25  
Mass Termination Connector............................................................26  
CONNECTING AN RS-232 DEVICE..........................................................26  
LEDS .....................................................................................................27  
LOOPBACK CONTROL SWITCH...............................................................28  
APPENDIX A, TROUBLESHOOTING...........................................29  
PROBLEM SOLVING................................................................................29  
APPENDIX B, SPECIFICATIONS ..................................................31  
GENERAL SPECIFICATIONS ....................................................................31  
MECHANICAL SPECIFICATIONS..............................................................32  
BACK-TO-BACK CONNECTIONS TO A SECOND MODEM.........................33  
RS-232 (RTU) Interface ....................................................................33  
ENVIRONMENTAL SPECIFICATIONS........................................................34  
COMPLIANCES........................................................................................34  
APPENDIX C, LIMITED PRODUCT WARRANTY.....................35  
APPENDIX D, RMA PROCEDURE ................................................36  
Page iii  
 
Contents  
NOTES  
Page iv  
 
Chapter 1  
Introduction  
ongratulations for purchasing the finest industrial-grade fast-  
poll rack-mount modem available.  
C
The Telenetics DSP9612RM (Flash Poll) modem is a  
9600/4800/0-1800 bps rack-mount modem designed for 4-wire, full-  
duplex or 2-wire, half-duplex operation over a voice-band leased line.  
The modem is designed utilizing the latest digital-signal processing  
(DSP) technology to achieve high performance. The modem employs  
Teleneticsproprietary modulation and encoding scheme to achieve fast  
modem training time. It is also backward compatible with Bell 202  
modems.  
The modem can be installed in either a Telenetics or a Motorola/UDS  
RM16M Universal Data Shelf. The modem occupies only one rack  
slot, eliminating the hassle of equipment trays and power bricks  
required for Plastic Boxmodems. The modem is powered from the  
Universal Data Shelf.  
The DSP9612RM modem is ideally suited for multi-point  
communication systems that require fast response time, short training  
time, and low throughput delay. The DSP9612RM is the most  
technologically advanced rack-mount modem on the market.  
This Users Guide is designed to let you get your modem up and  
runningas quickly as possible. It contains all the information you need  
to install and configure your modem. It also contains troubleshooting  
information in the unlikely event you encounter a problem with your  
modem.  
Page 5  
 
Introduction  
Features  
Though functionally similar to commercial modems, the DSP9612RM  
provides the following unique features that make it well suited for  
utility and industrial applications.  
Requires only one rack slot in a Telenetics or a Motorola/UDS  
RM16M Universal Data Shelf.  
Operates over voice-band conditioned or unconditioned leased line  
and pilot wires.  
Operates without human intervention, making it ideal for  
unmanned locations.  
Works within an extended temperature range of -40ºC to +85ºC.  
Designed with coupling transformers for high-voltage isolation and  
common mode noise rejection in industrial and commercial  
environments.  
Asynchronous data rates (selectable) of 9600, 4800, and 0-1800  
bps.  
Easily accessible DIP switches for user configuration and option  
selection.  
Local analog, local digital, and remote digital loopback  
diagnostics.  
Page 6  
 
Applications  
Applications  
The DSP9612RM modem is designed for point-to-point and multipoint  
data communications. Figure 1-1 shows a typical multipoint  
configuration.  
Figure 1-1. Network of Multipoint Configuration  
There are a number of factors that can affect the networks and  
modems operation and performance. These include:  
Operating speed  
2-wire or 4-wire configuration  
Transmission line characteristics, noise, and line impairments  
Network configuration (point-to-point or multipoint)  
Number of nodes on the network  
Ancillary Documentation  
For information about the Telenetics RM16M Universal Data Shelf,  
refer to the Telenetics RM16M Installation and Operation Manual for  
the Universal Data Shelf version you have.  
Page 7  
 
Introduction  
NOTES  
Page 8  
 
Chapter 2  
Installation  
his chapter describes how to install the modem.  
T
Unpacking Your Hardware  
Your package should include:  
At least one DSP9612RM modem  
This Users Guide  
If your package contents are damaged or missing, please contact your  
place of purchase immediately.  
Additional Items You Need  
To use your modem, you need the following additional items:  
A Telenetics or Motorola/UDS RM16M Universal Data Shelf  
A two- or four-wire transmission line or leased line  
Page 9  
 
Installation  
Hardware Overview  
Front View  
Figure 2-1 shows a front view of the DSP9612RM modem. Starting  
from the top, this view shows:  
A loopback test switch. See page 28.  
A set of eight LEDs. See page 27.  
Figure 2-1. Front View of Modem  
Page 10  
 
Hardware Overview  
Component View  
Figure 2-2 shows the component view of the modem. This view shows:  
Two configuration switch blocks, designated SW1 and SW2. See  
page 12.  
Jumpers located in various positions on the modem. Do not change  
or remove the straps from these jumpers.  
Edge connectors at the back of the modem, which plug into the  
backplane of a Telenetics or Motorola/UDS RM 16M Universal  
Data Shelf.  
Configuration  
Switch Blocks  
Edge Connectors  
Switch Block SW2  
Switch Block SW1  
Figure 2-2. Component View of Modem  
Page 11  
 
Installation  
Installation Summary  
The modem installation involves the following steps:  
1. Configuring the modem. See the section below.  
2. Connecting to a transmission line. See page 25.  
3. Connecting an RS-232 device. See page 26.  
Configuring the Modem  
You configure the modem using the two sets of DIP switches on the  
component side of the modem, near the center. The switches can have  
one of two functions, depending on how switch SW2-1 is set.  
Setting switch SW2-1 to OFF configures the modem for high-  
speed (Fast Poll) mode. In this mode, the switches correspond to  
the functions in Table 2-1 (see page 13).  
Setting switch SW2-1 to ON configures the modem for low-speed  
(FSK) mode. In this mode, the switches correspond to the functions  
in Table 2-3 (see page 18).  
The modem has several jumpers. Do not change or remove the  
straps from the jumpers.  
Note:  
High-Speed (Fast Poll) Mode  
Table 2-1 shows the modem switch settings that can be used when the  
modem is configured for high-speed (Fast Poll) mode. This mode is  
enabled when switch SW2-1 is set to OFF. Following this table is an  
explanation of these settings.  
Page 12  
 
Configuring the Modem  
Table 2-1. Modem Switch Settings for High-Speed Mode  
Switches  
Switch Settings  
OFF (Default)  
ON  
(see Table 2-2 on page 14)  
SW 1-1 1-4: Transmit Level (page 14)  
SW 1-5: Receiver Dynamic Range  
(page 15)  
10 to 43 dBm +3 to 30 dBm  
SW 1-6: TX Cable Equalizer (page 15) Enabled  
SW 1-7: RX Cable Equalizer (page 15) Enabled  
Disabled  
Disabled  
Inactive  
SW 1-8: Anti-streaming (page 15)  
Active  
SW 2-1: High-Speed/Low-Speed Mode Low-Speed Mode High-Speed Mode  
(page 16)  
(FSK)  
(Fast Poll)  
9600 bps  
10 bits  
SW 2-2: Data Rate in Fast Poll Mode  
SW 2-3: Async Character  
SW 2-4: Auto RTS (page 16)  
SW2-5: Reserved  
4800 bps  
11 bits  
Enabled  
Disabled  
SW 2-6: Production Test Only (page 16) Test  
Normal  
SW 2-7: 2- or 4-wire (page 16)  
2-wire, half-  
4-wire, full-duplex  
duplex  
SW 2-8: Carrier Control (page 17)  
SW 2-9: Rx Termination (page17)  
SW 2-10: Ground Options (page 17)  
Constant  
Disabled  
Switched  
Enabled  
Chassis Ground- Chassis Ground-  
Signal Ground  
Connected  
Signal Ground  
Disconnected  
Page 13  
 
Installation  
SW1-1 through SW1-4 Transmit Level (high- & low-speed modes)  
Switches SW1-1 through SW1-4 adjust the modems transmit level.  
Table 2-2 shows the transmit levels you can select using these switches.  
Table 2-2. Transmit Levels (High-Speed and Low-Speed Modes)  
SW1 through SW4 Switch Settings  
SW1-1  
SW1-2  
SW1-3  
SW1-4  
Transmit Level  
0 dBm  
OFF  
OFF  
OFF  
OFF  
OFF  
OFF  
OFF  
OFF  
ON  
OFF  
OFF  
OFF  
OFF  
ON  
OFF  
OFF  
ON  
OFF  
ON  
1 dBm  
2 dBm  
3 dBm  
4 dBm  
5 dBm  
6 dBm  
7 dBm  
8 dBm  
9 dBm  
10 dBm  
11 dBm  
12 dBm  
13 dBm  
14 dBm  
+3 dBm  
OFF  
ON  
ON  
OFF  
OFF  
ON  
OFF  
ON  
ON  
ON  
OFF  
ON  
ON  
ON  
OFF  
OFF  
OFF  
OFF  
ON  
OFF  
OFF  
ON  
OFF  
ON  
ON  
ON  
OFF  
ON  
ON  
ON  
ON  
OFF  
OFF  
ON  
OFF  
ON  
ON  
ON  
ON  
ON  
OFF  
ON  
ON  
ON  
ON  
Page 14  
 
Configuring the Modem  
SW1-5 Receiver Dynamic Range (high- & low-speed modes)  
SW1-5  
ON = 10 to 43 dBm  
OFF = +3 to 30 dBm  
For a low receive signal level, set SW1-5 to ON (43 dBm ). For short  
distances or to select a strong receive signal, set SW1-5 to OFF.  
SW1-6 and SW1-7 Cable Equalizer (high-speed mode only)  
SW1-6 ON = Enable TX Cable Equalizer  
OFF = Disable TX Cable Equalizer  
SW1-7 ON = Enable RX Cable Equalizer  
OFF = Disable RX Cable Equalizer  
To improve or extend the modems polling performance, use the fixed  
Compromise Cable Equalizer when polling on long metallic circuits.  
The cable equalizer is active only when the modem is in high-speed  
mode (SW2-1 set to OFF).  
SW1-8 Anti-streaming (high- & low-speed modes)  
SW1-8 ON = Anti-streaming active  
OFF = Anti-stream inactive  
Typically, anti-streaming is used in multi-point applications to prevent  
a malfunctioning slave modem from occupying the line indefinitely.  
When anti-streaming is active, the modem can transmit data for a  
maximum of 27 seconds before the transmitter turns off automatically.  
The modem then looks for an ON-to-OFF Request To Send (RTS)  
transition before proceeding with normal operation. Anti-streaming can  
be selected in either high-speed or low-speed mode.  
Page 15  
 
Installation  
SW2-1 Fast Poll/FSK (high- & low-speed modes)  
SW2-1 ON = Low-Speed Mode (FSK)  
OFF = High-Speed Mode (Fast Poll)  
SW2-1 configures the modem for either low-speed (FSK) mode or  
high-speed (Fast Poll) mode. As a result, the SW2-1 setting you choose  
determines the switch definitions for the other switches.  
For high-speed mode, the configuration switches follow the  
definitions in Table 2-1.  
For low-speed mode, the configuration switches follow the  
definitions in Table 2-3.  
SW2-4 Auto RTS (high-speed mode only)  
SW2-4 ON = Enable Auto RTS  
OFF = Disable Auto RTS  
For data terminals that do not support hardware RTS, set SW2-4 to ON  
to enable buffer mode. In this mode, TXD is detected at the modem and  
internal RTS is turned ON. After training completes, the TXD is  
transmitted to the remote modem. The transmitter turns off if no TXD is  
detected after 1 character length of idle time.  
SW2-6 Production Test Only (high- & low-speed modes)  
SW2-6 Must be OFF  
SW2-6 must be in the OFF position for normal operation.  
SW2-7 2-/4-Wire Operation (high- & low-speed modes)  
SW2-7 ON = 2-Wire, Half-Duplex Mode  
OFF = 4-Wire, Full-Duplex Mode  
SW2-7 configures the modem for 4-wire full-duplex or 2-wire half-  
duplex operation.  
Page 16  
 
Configuring the Modem  
SW2-8 Carrier Control (high- & low-speed modes)  
SW2-8 ON = Constant  
OFF = Switched  
SW2-8 selects either constant or switched carrier. Constant carrier  
allows DTEs, such as asynchronous dumb terminals or RTUs, to  
operate with modems, without the input RTS signal. When constant  
carrier mode is enabled (SW2-8 set to ON), the modem forces the  
transmit carrier active and the RTS-CTS delay is minimum (<0.5 ms.).  
You can use constant carrier in 4-wire, point-to-point or multi-point  
applications (from master to slave modems).  
In switched-carrier mode (SW2-8 set to OFF), the RTS/CTS delay is 23  
ms.  
SW 2-9 RX Termination (high- & low-speed modes)  
SW2-9 ON = Disable Rx Termination  
OFF = Enable Rx termination  
SW2-9 selects whether RX termination is enabled for a modem. If you  
set this switch OFF, the receiver is terminated with 600 . If you set  
this switch ON, the receiver is not terminated.  
SW 2-10 Ground Option (high- & low-speed modes)  
SW2-10 ON = Modem signal ground is connected to chassis ground  
OFF = Modem signal ground and chassis ground  
disconnected  
SW2-10 determines the grounding option for the modem. Setting this  
switch ON connects the modem signal ground to chassis ground.  
Setting this switch OFF disconnects the modem signal ground from  
chassis ground.  
Page 17  
 
Installation  
Low-Speed (FSK) Mode  
Table 2-3 shows the modem switch settings that can be used when the  
modem is configured for low-speed (FSK) mode. This mode is enabled  
when switch SW2-1 is set to ON. Following this table is an explanation  
of these settings.  
Table 2-3. Modem Switch Settings for Low-Speed Mode  
Switches  
Switch Settings  
OFF  
ON  
(see Table 2-4 page 19)  
SW 1-1 1-4: Transmit Level  
(page 19)  
SW 1-5: Receiver Dynamic Range  
(page 20)  
10 to 43 dBm +3 to 30 dBm  
(see Table 2-5 page 20)  
SW 1-6 SW1-7: RTS-CTS Delay  
(page 20)  
SW 1-8: Anti-streaming (page 20)  
Active  
Inactive  
SW 2-1: High-Speed)/Low-Speed  
Mode (page 21)  
Low-Speed (FSK)  
Mode  
High-Speed  
(Fast Poll) Mode  
SW 2-2: CD Delay (page 21)  
SW 2-3: Turnaround SQ (page 21)  
SW 2-4: Not Used  
23 ms.  
0 ms.  
6 ms.  
8 ms.  
SW2-5: Soft Carrier (page 22)  
Disabled  
Test  
Enabled  
Normal  
SW 2-6: Production Test Only  
(page 22)  
SW 2-7: 2- or 4-wire (page 22)  
SW 2-8: Carrier Control (page 22)  
SW 2-9: Rx Termination (page23)  
2-wire  
4-wire  
Constant  
Disabled  
Switched  
Enabled  
SW 2-10: Ground Options (page 23) Chassis Ground-  
Chassis Ground-  
Signal Ground  
Disconnected  
Signal Ground  
Connected  
Page 18  
 
Configuring the Modem  
SW1-1 through SW1-4 Transmit Level (high- & low-speed modes)  
Switches SW1-1 through SW1-4 adjust the modems transmit level.  
Table 2-4 shows the transmit levels you can select using these switches.  
Table 2-4. Transmit Levels (High-Speed and Low-Speed Modes)  
SW1-1 through SW1-4 Switch Settings  
SW1-1  
SW1-2  
SW1-3  
SW1-4  
Transmit Level  
0 dBm  
OFF  
OFF  
OFF  
OFF  
OFF  
OFF  
OFF  
OFF  
ON  
OFF  
OFF  
OFF  
OFF  
ON  
OFF  
OFF  
ON  
OFF  
ON  
1 dBm  
2 dBm  
3 dBm  
4 dBm  
5 dBm  
6 dBm  
7 dBm  
8 dBm  
9 dBm  
10 dBm  
11 dBm  
12 dBm  
13 dBm  
14 dBm  
+3 dBm  
OFF  
ON  
ON  
OFF  
OFF  
ON  
OFF  
ON  
ON  
ON  
OFF  
ON  
ON  
ON  
OFF  
OFF  
OFF  
OFF  
ON  
OFF  
OFF  
ON  
OFF  
ON  
ON  
ON  
OFF  
ON  
ON  
ON  
ON  
OFF  
OFF  
ON  
OFF  
ON  
ON  
ON  
ON  
ON  
OFF  
ON  
ON  
ON  
ON  
Page 19  
 
Installation  
SW1-5 Receiver Dynamic Range (high- & low-speed modes)  
SW1-5  
ON = 10 to 43 dBm  
OFF = +3 to 30 dBm  
For a low receive signal level, set SW1-5 to ON (43 dBm ). For short  
distances or to select a strong receive signal, set SW1-5 to OFF.  
SW1-6 and SW1-7 RTS-CTS Delay (low-speed mode only)  
Switches SW1-6 and SW1-7 determine the duration of the RTS-CTS  
delay. Table 2-5 shows the RTS-CTS delays you can select using these  
switches.  
Table 2-5. RTS-CTS Delays  
SW1-6 and SW1-7 Switch Settings  
SW1-6  
SW1-7  
RTS-CTS Delay  
8 ms. delay  
OFF  
OFF  
ON  
OFF  
ON  
33 ms. Delay  
59 ms. Delay  
219 ms. delay  
OFF  
ON  
ON  
SW1-8 Anti-streaming (high- & low-speed modes)  
SW1-8 ON = Anti-streaming active  
OFF = Anti-stream inactive  
Typically, anti-streaming is used in multi-point applications to prevent  
a malfunctioning slave modem from occupying the line indefinitely.  
When anti-streaming is active, the modem can transmit data for a  
maximum of 27 seconds before the transmitter turns off automatically.  
The modem then looks for an ON-to-OFF Request To Send (RTS)  
transition before proceeding with normal operation. Anti-streaming can  
be selected in either high-speed or low-speed mode.  
Page 20  
 
Configuring the Modem  
SW2-1 Fast Poll/FSK (high- & low-speed modes)  
SW2-1 ON = Low-Speed Mode (FSK)  
OFF = High-Speed Mode (Fast Poll)  
SW2-1 configures the modem for either low-speed (FSK) mode or  
high-speed (Fast Poll) mode. As a result, the SW2-1 setting you choose  
determines the switch definitions for the other switches.  
For high-speed mode, the configuration switches follow the  
definitions in Table 2-1.  
For low-speed mode, the configuration switches follow the  
definitions in Table 2-3.  
SW2-2 CD Delay (low-speed mode only)  
SW2-2 ON = 23 milliseconds  
OFF = 6 milliseconds  
SW2-2 controls the Carrier Detect (CD) delay and is valid for low-  
speed mode only. Setting this switch to ON configures the modem to  
turn on CD 23 milliseconds after it detects a valid carrier signal. Setting  
this switch to OFF configures the modem to turn on CD 6 milliseconds  
after it detects a valid carrier signal.  
SW2-3 Turnaround Squelch Delay (low-speed mode only)  
SW2-3 ON = 0 milliseconds  
OFF = 8 milliseconds  
SW2-3 controls the turnaround squelch delay and is valid for low-speed  
mode only. Setting this switch to ON configures the modem to enable  
its receiver immediately after the Request To Send (RTS) signal is  
turned off. When this switch is set to OFF and the modem is configured  
for 2-wire mode (SW2-7 set to ON), the modem squelches the receiver  
for 8 milliseconds after RTS is turned off to prevent far-end echoes  
from causing data errors.  
Page 21  
 
Installation  
SW2-5 Soft Carrier (low-speed mode only)  
SW2-5 ON = Disabled  
OFF = Enabled  
SW2-5 controls the soft carrier and is valid for low-speed mode only.  
Setting this switch to OFF configures the modem to transmit a 900 Hz  
soft carrier to the remote modem after RTS is turned off. Setting this  
switch to ON prevents the modem from transmitting a soft carrier after  
RTS is turned off.  
SW2-6 Production Test Only (high- & low-speed modes)  
SW2-6 Must be OFF  
SW2-6 must be in the OFF position for normal operation.  
SW2-7 2-/4-Wire Operation (high- & low-speed modes)  
SW2-7 ON = 2-Wire, Half-Duplex Mode  
OFF = 4-Wire, Full-Duplex Mode  
SW2-7 configures the modem for 4-wire full-duplex or 2-wire half-  
duplex operation.  
SW2-8 Carrier Control (high- & low-speed modes)  
SW2-8 ON = Constant  
OFF = Switched  
SW2-8 selects either constant or switched carrier. Constant carrier  
allows DTEs, such as asynchronous dumb terminals or RTUs, to  
operate with modems, without the input RTS signal. When constant  
carrier mode is enabled (SW2-8 set to ON), the modem forces the  
transmit carrier active and the RTS-CTS delay is minimum (<0.5 ms.).  
You can use constant carrier in 4-wire, point-to-point or multi-point  
applications (from master to slave modems).  
Page 22  
 
Installing the Modem in the Universal Data Shelf  
In switched-carrier mode (SW2-8 set to OFF), the RTS/CTS delay is 23  
ms.  
SW 2-9 RX Termination (high- & low-speed modes)  
SW2-9 ON = Disable Rx Termination  
OFF = Enable Rx termination  
SW2-9 selects whether RX termination is enabled for a modem. If you  
set this switch OFF, the receiver is terminated with 600 . If you set  
this switch ON, the receiver is not terminated.  
SW 2-10 Ground Option (high- & low-speed modes)  
SW2-10 ON = Modem signal ground is connected to chassis ground  
OFF = Modem signal ground and chassis ground  
disconnected  
SW2-10 determines the grounding option for the modem. Setting this  
switch ON connects the modem signal ground to chassis ground.  
Setting this switch OFF disconnects the modem signal ground from  
chassis ground.  
Installing the Modem in the Universal Data  
Shelf  
After you set the modems configuration switches, you can install it in a  
slot within a 19- or 23-inch Telenetics or Motorola RM16M Universal  
Data Shelf. The modem is installed or replaced from the front of the  
Universal Data Shelf, without disturbing the cable connections on the  
back of the Shelf. The modem can be installed and removed without  
having to remove power from the Shelf. Special tools or test equipment  
are not required for installing the modem.  
1. Wear an antistatic wrist strap over your wrist on your bare skin  
(not over a shirt or jacket).  
2. Remove the wrapping protecting the modem.  
Page 23  
 
Installation  
3. Remove the front panel of the Universal Data Shelf and pick an  
empty slot.  
4. Hold the modem so the front panel LEDs are facing you and the  
edge connectors are pointing to the backplane of the Universal  
Data Shelf.  
5. Install the modem into the selected slot in the Universal Data Shelf  
(see Figure 2-3).  
6. Push firmly on the modem to seat it properly into the slot and  
backplane. The back of the Universal Data Shelf contains the  
connectors for interfacing to the Date Terminal Equipment and  
communications line. Figure 2-4 shows how the modems look  
when installed in the rack.  
7. Replace the front panel of the Universal Data Shelf.  
Figure 2-3. Installing the Modem  
Page 24  
 
Connecting to a Transmission Line  
Figure 2-4. Modems Installed in the Rack  
Connecting to a Transmission Line  
The Universal Data Shelf has different Telco options. Your version  
may have 16 8-pin modular jack connectors, one for each slot in the  
Shelf. It may also have an optional 50-pin mass-termination Telco  
connector.  
To connect your modem to a leased line using the modular jack  
connectors, refer to Modular Jack Connectors,below. To use the 50-  
pin mass-termination connector, refer to Mass Termination  
Connectoron page 26.  
Modular Jack Connectors  
The rear panel of the Universal Data Shelf has an 8-pin RJ-45 jack for  
each slot in the Shelf. After you install the modem into a slot, connect  
the slots corresponding RJ-45 jack to a leased line.  
Leased lines have four contacts: a transmit (Tx) pair and a receive (Rx)  
pair. For communication to occur:  
The Rx line of the Shelfs RJ-45 jack must connect to the Tx line  
of the other modem.  
Page 25  
 
Installation  
The Tx line of the Shelfs RJ-45 jack must connect to the Rx line  
of the other modem.  
For more information, refer to the Telenetics RM16M Installation and  
Operation Manual for the Universal Data Shelf version you have.  
Mass Termination Connector  
As an option, a 50-pin mass-termination connector can be used as the  
Telco connection for the modem(s). For more information, refer to the  
Telenetics RM16M Installation and Operation Manual for the Universal  
Data Shelf version you have.  
Connecting an RS-232 Device  
The Universal Data Shelf has different RS-232 options for accepting an  
attached RS-232 (RTU) device. Your version may have a female, 25-  
pin RS-232 connector for each slot in the Shelf. It may also have an  
optional 50-pin mass-termination Telco connector. For more  
information, refer to the Telenetics RM16M Installation and Operation  
Manual for the Universal Data Shelf version you have.  
Page 26  
 
LEDs  
LEDs  
The front panel of the modem provides the LEDs shown in Table 2-7.  
Table 2-7. Modem LEDs  
LED  
Color  
Green  
Description  
Power  
Power  
Yellow  
Yellow  
Yellow  
Yellow  
Yellow  
Red*  
Request To Send  
Clear To Send  
Transmit Data  
Receive Data  
RTS  
CTS  
TxD  
RxD  
DCD  
ALB  
DLB  
Carrier Detect  
Analog Loopback  
Digital Loopback  
Red*  
* When the modem is in remote loopback, both the ALB  
and DLB LEDs go ON.  
Page 27  
 
Installation  
Loopback Control Switch  
The front panel of the modem has a push button for initiating the  
following loopback diagnostic tests:  
Local analog loopback started by pressing the button one time.  
Local digital loopback started by pressing the button two times.  
Remote digital loopback set the local modems RTS signal to  
low. Then press the remote modems diagnostics button three times  
and raise the local modems RTS signal to start the test. The ALB  
and DLB LEDs go ON when the modem is in remote digital  
loopback. This test is only available in Fast Poll mode only.  
Figure 2-6 illustrates these three diagnostics.  
Figure 2-6. Loopback Diagnostics  
Page 28  
 
Appendix A  
Troubleshooting  
n the event you encounter a problem using your Telenetics modem,  
refer to the troubleshooting information in this appendix. To  
troubleshoot the power supply and backplane on the Universal Data  
Shelf, refer to the Telenetics RM16M Installation and Operation  
Manual for the Universal Data Shelf version you have.  
I
If you encounter a problem with your modem, be sure  
,
IMPORTANT  
the modem switches are set to the appropriate  
positions. If a switch is halfway between an on and off  
setting, the modem will not operate properly.  
Problem Solving  
Table A-1 offers troubleshooting solutions for modem problems.  
Table A-1. Troubleshooting Suggestions  
If…  
Perform These Procedures…  
Modem does not respond and Check the Universal Data Shelfs  
all LEDs are off. power supply module(s).  
Modem does not receive data, The receive line pair may be  
disconnected from the modem. Make  
sure the transmission line connection  
to the rear panel of the Universal Data  
Shelf is accurate and secure.  
and the DCD and RxD LEDs  
are off.  
The receive signal level may be below  
the CD threshold. Set SW1-5 ON to  
see whether configuring the modem  
for a 43 dBm threshold resolves the  
problem.  
Page 29  
 
Troubleshooting  
Table A-1. Troubleshooting Suggestions  
If…  
Perform These Procedures…  
The attached terminal or DTE may not  
be sending data to the modem. Verify  
that data is being transmitted. If data is  
being transmitted, make sure the RS-  
232 cable is sound and securely  
connected to the modem and terminal  
or DTE.  
The RTS, CTS, and TxD  
LEDs do not blink.  
Page 30  
 
Appendix B  
Specifications  
General Specifications  
Data rate:  
9600, 4800, or 0-1800 bps asynchronous  
8 or 9 data bits with 1 or more stop bits  
EIA RS-232 or V.24 compatible  
Data format:  
DTE interface:  
Line conditions:  
TELCO Voice band 4- or 2-wire leased line,  
conditioned or unconditioned  
Private metallic circuits up to 9.5 miles (24  
AWG) without cable equalizer. Up to 15.0 miles  
(24 AWG) with TX and RX cable equalizer  
Operating modes: 2-wire half-duplex or 4-wire full-duplex  
Modulation:  
High-speed fast poll Telenetics proprietary  
FSK, Bell 202T compatible  
Mark = 1200 Hz  
Space = 2200 Hz  
Soft Carrier = 900 Hz  
Equalizer:  
Automatic, adaptive  
RTS-CTS Delay:  
23 ms. (fast poll)  
8, 33, 59, or 219 ms (FSK)  
Page 31  
 
Specifications  
Receiver  
dynamic range:  
0 to 30 dBm or 10 to 43 dBm  
Operating  
temperature:  
-40°C to +85°C  
Surge protection:  
Leased line, up to 15KV  
Carrier Control:  
Constant or switched, DIP switch selectable  
Carrier loss  
recovery:  
Train on Data  
Throughput delay: Less than 10 milliseconds for fast polling.  
Auto RTS:  
Support DTE without hardware RTS  
(high speed only)  
Anti-Streaming:  
27-second timer to prevent transmitter lock-up  
network  
Mechanical Specifications  
Dimensions:  
9 inches deep x 6.25 inches high x .87 inches  
thick  
Weight:  
8 ounces (card only)  
Page 32  
 
Back-to-Back Connections to a Second Modem  
Back-to-Back Connections to a Second  
Modem  
Rx  
Rx  
Rx  
Rx  
Tx  
Tx  
Tx  
Tx  
Modem 1  
Modem 2  
RS-232 (RTU) Interface  
Signal  
Name  
Modem  
Input/Output  
DB25  
Pin  
Description  
Earth GND  
TXD  
1
2
3
4
5
6
Earth Ground  
Transmit Data  
Receive Data  
Request To Send  
Clear To Send  
Input  
RXD  
Output  
Input  
RTS  
CTS  
Output  
Output  
DSR  
Data Set Ready  
(Modem Ready)  
SG  
-
7
8
Signal Ground  
DCD  
DTR  
Output  
Input  
Data Carrier Detected  
20  
Data Terminal Ready  
(Host Ready)  
Page 33  
 
Specifications  
Environmental Specifications  
Operating temperature: -40 to + 85o C  
Storage temperature:  
Operating humidity:  
Isolation:  
-40 to +125o C  
5 to 95 %, non-condensing.  
3750 V RMS  
Surge protection:  
Leased line up to 15K VA  
Compliances  
The modem is designed to meet the following agency requirements:  
EMI/RFI:  
FCC part 15 for Class A computing device  
Industry Canada. (Emissions)  
Page 34  
 
Appendix C  
Limited Product  
Warranty  
Telenetics warrants that the Product sold will be free from defects in material and  
workmanship and perform to Telenetics' applicable published specifications for a period of  
18 months from the date of delivery to Customer or 12 months from placement into  
service, whichever occurs first. The liability of Telenetics hereunder shall be limited to  
replacing or repairing, at its option, any defective Products which are returned F.O.B.,  
Telenetics' facility, Lake Forest, California (or, at Telenetics' option refunding the purchase  
price of such products). In no case are Products to be returned without first obtaining  
permission and a customer return order number from Telenetics. In no event shall  
Telenetics be liable for any consequential or incidental damages.  
Products which have been subject to abuse, misuse, accident, alteration, neglect,  
unauthorized repair or installation are not covered by the warranty. Telenetics shall make  
the final determination as to the existence and cause of any alleged defect. No liability is  
assumed for expendable items such as lamps and fuses. No warranty is made with respect  
to custom products or Products produced to Customer's specifications except as  
specifically stated in writing by Telenetics in the agreement for such custom products.  
This warranty is the only warranty made by Telenetics with respect to the goods delivered  
hereunder, and may be modified or amended only by a written instrument signed by a duly  
authorized officer or Telenetics and accepted by Customer.  
This warranty and limitation extends to customer and to users of the product and is in lieu  
of all warranties with respect to the product whether express, implied, or statutory,  
including without limitation the implied warranties of merchantability and fitness for a  
particular purpose.  
Page 35  
 
Appendix D  
RMA Procedure  
Return Merchandise Authorization (RMA) Procedure  
Before returning any Telenetics product, an RMA number must be obtained. Before  
asking for an RMA number, ascertain that the product was purchased from Telenetics. If  
you bought the product from a Distributor or Systems Integrator, the product should be  
returned to that vendor.  
The most convenient method to obtain an RMA number for a product purchased from  
Telenetics is to send an email to [email protected]. Information required must  
include  
Your Company Name, address, the actual address that we would use to return the product  
to you. Please include any Mail Stop or specific delivery information. The City, State,  
and zip code are all required. Your phone and FAX numbers. Your email address.  
If the above information is on your letterhead, that format is acceptable.  
For each item you wish to return: List the product model number, usually found on the  
serial number tag, the serial number for each item you wish to return, a description of the  
problem you are encountering, and the cause of the problem (if known).  
A product support specialist may call to verify that the product is properly installed or  
may ask you to perform tests to insure that the product has actually failed.  
After review of the problem, an RMA number will be assigned, you will be notified by  
email or FAX.  
The product must be properly packed and returned to:  
Telenetics  
25111 Arctic Ocean  
Lake Forest, CA 92630  
The RMA number must be legibly displayed on the shipping carton.  
No RMAs will be issued without a product review, Telenetics will not be responsible for  
any product returned without an RMA number.  
In the near future the RMA form will be available on our Web site  
Telenetics.com/support/rma. Fill in all blanks and click on the Submitbutton.  
If you think the product may be out of warranty, include a method of payment for repairs,  
either a Purchase Order number, or Credit card number, Card Holder Name, Date of  
Expiration on the RMA request. Repairs currently require 5 10 working days, and are  
returned UPS second day air.  
Page 36  
 

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