2000, Radyne ComStream Corporation. This manual
may not in whole or in part be copied, reproduced,
translated or reduced to any electronic or magnetic
storage medium without the written consent of a duly
authorized officer of Radyne ComStream Corporation.
Radyne ComStream Corporation • 3138 E. Elwood St. • Phoenix, AZ 85034 • (602) 437-9620 • Fax: (602) 437-4811
RCS10 Redundant Communication System Warranty Policy
RADYNE COMSTREAM WARRANTY POLICY
Warranty and Service
Radyne ComStream (hereafter referred to as Radyne or Seller) warrants the items manufactured and sold by
Radyne ComStream to be free of defects in material and workmanship for a period of two (2) years from date
of shipment. Radyne ComStream's obligation under its warranty is limited in accordance with the periods of
time and all other conditions stated in all provisions of this warranty.
This warranty applies only to defects in material and workmanship in products manufactured by Radyne
ComStream. Radyne ComStream makes no warranty whatsoever concerning products or accessories not of
its manufacture.
Repair, or at Radyne ComStream's option, replacement of the Radyne ComStream products or defective
parts therein shall be the sole and exclusive remedy for all valid warranty claims.
Warranty Period
The applicable warranty period shall commence on the date of shipment from Radyne ComStream's facility to
the original purchaser and extend for the stated period following the date of shipment. Upon beginning of the
applicable Radyne ComStream warranty period, all customer's remedies shall be governed by the terms
stated or referenced in this warranty. In-warranty repaired or replacement products or parts are warranted
only for the remaining unexpired portion of the original warranty period applicable to the repaired or replaced
products or parts. Repair or replacement of products or parts under warranty does not extend the original
warranty period.
Warranty Coverage Limitations
The following are expressly not covered under warranty:
1. Any loss, damage and/or malfunction relating in any way to shipping, storage, accident, abuse,
alteration, misuse, neglect, failure to use products under normal operating conditions, failure to use products
according to any operating instructions provided by Radyne ComStream, lack of routine care and
maintenance as indicated in any operating maintenance instructions, or failure to use or take any proper
precautions under the circumstances.
2. Products, items, parts, accessories, subassemblies, or components which are expendable in normal use
or are of limited life, such as but not limited to, bulbs, fuses, lamps, glassware, etc. Radyne ComStream
reserves the right to revise the foregoing list of what is covered under this warranty.
Warranty Replacement and Adjustment
Radyne ComStream will not make warranty adjustments for failures of products or parts which occur after the
specified maximum adjustment period. Unless otherwise agreed, failure shall be deemed to have occurred no
more than seven (7) working days before the first date on which a notice of failure is received by Radyne
ComStream. Under no circumstances shall any warranty exceed the period stated above unless expressly
agreed to in writing by Radyne ComStream.
Liability Limitations
This warranty is expressly in lieu of and excludes all other express and implied warranties, including but not
limited to warranties of merchantability and of fitness for part icular purpose, use, or applications, and all other
obligations or liabilities on the part of Radyne ComStream, unless such other warranties, obligations, or
liabilities are expressly agreed to in writing by Radyne ComStream.
All obligations of Radyne ComStream under this warranty shall cease in the event its products or parts
thereof have been subjected to accident, abuse, alteration, misuse or neglect, or which have not been
operated and maintained in accordance with proper operating instructions.
TM058 - Rev. 2.3 ii
Warranty Policy RSC10 Redundant Communication System
In no event shall Radyne ComStream be liable for incidental, consequential, special or resulting loss or
damage of any kind howsoever caused. Radyne ComStream’s liability for damages shall not exceed the
payment, if any, received by Radyne ComStream for the unit or product or service furnished or to be
furnished, as the case may be, which is the subject of claim or dispute.
Statements made by any person, including representatives of Radyne ComStream, which are inconsistent or
in conflict with the terms of this warranty, shall not be binding upon Radyne ComStream unless reduced to
writing and approved by an officer of Radyne ComStream.
Warranty Repair Return Procedure
Before a warranty repair can be accomplished, a Repair Authorization must be received. It is at this time that
Radyne ComStream will authorize the product or part to be returned to the Radyne ComStream facility or if
field repair will be accomplished. The Repair Authorization may be requested in writing or by calling:
Radyne ComStream Corporation
3138 E. Elwood St.
Phoenix, Arizona 85034 (USA)
ATTN.: Customer Support
Phone: (602) 437-9620 Fax: (602) 437-4811
Any product returned to Radyne ComStream for examination must be sent prepaid via the means of
transportation indicated as acceptable to Radyne ComStream. Return Authorization Number must be clearly
marked on the shipping label. Returned products or parts should be carefully packaged in the original
container, if possible, and unless otherwise indicated, shipped to the above address.
Non-Warranty Repair Procedure
When a product is returned for any reason, Customer and its shipping agency shall be responsible for all
damage resulting from improper packing and handling, and for loss in transit, not withstanding any defect or
nonconformity in the product. By returning a product, the owner grants Radyne ComStream permission to
open and disassemble the product as required for evaluation. In all cases, Radyne ComStream has sole
responsibility for determining the cause and nature of failure, and Radyne ComStream's determination with
regard thereto shall be final.
TM058 - Rev. 2.3 iv
RCS10 Redundant Communication System Record of Revisions
RCS10 Redundant Communication System
Installation and Operation Manual
TM058 - Record of Revisions
Radyne ComStream Corporation is constantly improving its products and therefore the information in this
document is subject to change without prior notice. Radyne ComStream Corporation makes no warranty of
any kind with regard to this material, including but not limited to the implied warranties of merchantability and
fitness for a particular purpose. No responsibility for any errors or omissions that may pertain to the material
herein is assumed. Radyne ComStream Corporation makes no commitment to update nor to keep current
the information contained in this document. Radyne ComStream Corporation assumes no responsibility for
use of any circuitry other than the circuitry employed in Radyne ComStream Corporation’s systems and
equipment.
Revision
Level
1.0 2-28-97 Initial Release
1.1 4-15-97 Added menu screens, updated serial communications protocol, enhanced
2.0 3-1-98 Added TUV CE warning data and Reed-Solomon Data
Addendum RCS10 Modem and Redundancy Control System
Addendum
3.4.1 Description
(Paragraph 3) Delete the following sentence:
Modems not part of a backup pool will not be learned.
3.4.6 Configuration Copy
The Configuration Copy is a feature that enables a user to store/retrieve up to five modem and interface card
configurations in non-volatile memory. These are in addition to the current running configuration.
The interface card configurations are tagged to the slot, and are stored in the switch. The modems, on the
other hand hold their own settings. The user can copy from and copy to any configuration in memory
including the current running configuration. Source and destination configurations must be different.
When instructed to copy a configuration, the switch sends a command to the modem to copy the
configuration, and if successful, the switch updates the slot configurations as well. If the destination
configuration is the current configuration, the modem re-initializes itself and uses the new settings. The
switch interface card is only updated when the destination configuration is the current configuration.
A user must be careful not to copy onto the current configuration unless that is desired, interruptions in traffic
will occur.
3.9.1 Function Keys
MC2.1 - Modified as follows:
Note: Inner FEC – Select VIT 1/2, VIT 3/4, VIT 7/8, SEQ 1/2, SEQ 3/4, SEQ 7/8, CSC 3/4, NONE,
TPC.793, TPC.495, TPC.325
TM058 - Rev. 2.3 v
Addendum RCS10 Modem and Redundancy Control System
Appendix A - RCS10 Technical Specifications.…..…………………………………………………………..…… A-1
Appendix B - Modem Remote Communications Specification…………………………………………………….B-1
Appendix C – RCS10 Remote Communications Specification……………………………………………………C-1
Addendum A – RCS10/RCS10L Simple Network Management Protocol (SNMP)……………………………..AD-1
TM058 - Rev. 2.3
xxv
Appendix A RCS10 Technical Specifications
Solomon
Section 1 - RCS10 Redundant Communication System Description
1.1 Introduction
As shown in Figure 1-1, Radyne ComStream's RCS10 is
a complete, self-contained modem system with all
modems, terrestrial interfaces and redundancy switch
functions included in a single equipment cabinet that is
10 rack units high (17.5 inches). This compact and
versatile common equipment package is unique and
offers unsurpassed performance, reliability and flexibility.
In addition to full support for Intelsat's IDR/IBS services,
the system may be operated in closed networks.
The built-in M:N Redundancy Switch is an intelligent
microcomputer controlled system, capable of controlling
up to ten DMD10 modems in a variety of configurations.
The switch can be operated automatically, in which case
an automatic back-up of a failed on-line modem occurs
after a preprogrammed delay. The switch may also be
operated manually, allowing the operator to manually
switch in the backup unit. Front panel controls and
indicators provide for auto/manual configuration, as well
as display of online/off-line status information for all
modems in the redundancy configuration.
All switch and modem operating parameters, such as
variable data rates and selectable IBS/IDR framing, are easily set and changed by the operator.
The modem and redundancy switch monitor and control functions are available at the front panel of
the system (Refer to Section 3). All functions may also be accessed through a terminal or a
personal computer via a serial link (RS485 or Ethernet) for complete remote monitoring and control
capability.
RCS10 FEATURES
• Ten Modems and a Redundancy Switch in a
10 Rack Unit (17.5 inches) enclosure
• Up to 30 Modems in One Rack
• Large Display with Easy-to-use Menu Structure
• Built-in M:N Redundancy Switch
• Dual Redundant Power Supplies
• Fewer Cables Simplifies Installation
• Fully-Compliant with IESS 308/309
• Operation from 9.6 Kbps to 8.448 Mbps
• Options Include Drop and Insert, ReedCodec, Sequential Decoder, Trellis Coded
Modulation, ESC, OQPSK, 8PSK Modulation and
Ethernet Remote M&C.
When used with the optional IFC10 IF Combiner/Splitter system, the RCS10 system provides all of
the signal combiners and splitters, terminations and interconnecting cables that are necessary to
connect any combination of up to nine active modems to nine independent uplink and nine
independent downlink transponders. Refer to Figure 1-3, RCS10 System Block Diagram for a basic
overview of the RCS10 system components.
1.2 External Reference
The External Reference Module, located in slot 10 on the far left side of the RCS10 rear panel (See
Figure 1-2), has one External IF Reference input which is distributed to all ten DMD1O modems.
Each modem’s on-board system oscillator can be individually locked to the external reference.
Additionally, the external reference module can be equipped with a 10-7 high stability reference
oscillator which is distributed to all ten DMD10 modems, thus providing a low-cost high-stability
option. An External IF reference output is also provided for distribution to other equipment.
Also, the external reference has one BNC clock input which is distributed to all ten modems. Each
modem control can independently select this external clock as its Tx clock and/or RX buffered
clock source.
Page 1-1
RCS10 Technical Specifications Appendix A
1.3 RCS10 System Functional Block Diagram
As shown in Figure 1-3, the RCS10 is comprised of five functional sections. Refer to Section 5,
Principles of Operation, for detailed information on the DMD10 modem principles of operation. The
functional areas of the RSC10 are as follows:
• IF Switch Section
• The DMD10 Modem Section
• The Data Switch Section
• The Switch CPU Section
• The Front Panel Interface
Page 1-2
Appendix A RCS10 Technical Specifications
Page A -3
RCS10 Technical Specifications Appendix A
Page 1-4
Appendix A RCS10 Technical Specifications
Page A -5
Appendix A RCS10 Technical Specifications
Section 2 - Installation
2.0 Installation Requirements
This chapter instructs the user in the methods for setting up and installing an RCS10 Redundant
Communication System into a Satellite Modem system.
2.1 Unpacking the System
Unseal the shipping cartons taking care not to damage the cartons, the packing material or the
equipment inside. The cartons and the packing material should be saved in the event that an
RCS10 will need to be reshipped. Examine the exterior of the units for any possible shipping
damage.
2.1.1 List of Items
Carefully remove the units from the cart ons. In addition to this manual, be sure that the following
items are present:
• RCS10 Redundant Communication System
• 2 AC Power Cords
• RCS10 System Test Data Sheet
2.1.2 In Case of Shipping Damage
If any shipping damage is discovered on any of the above listed equipment, promptly contact the
transporter and file a damage claim. The shipping company is responsible for any damage caused
during shipping. Radyne ComStream Corporation should also be contacted.
Damage as a result of transportation is not covered under the Radyne ComStream Corporation
Warranty. Refer to the Warranty section in the front of this manual for further information.
The procedure for returning faulty or damaged equipment is contained in the warranty section in the
front of this manual.
2.1.3 Test Data Sheet
Each RCS10 Redundant Communication System is shipped with a Test Data Sheet. This report
contains information on the results of the Switch quality control testing. The report also includes
information pertaining to the system settings that were made at the factory. Radyne ComStream
Corporation recommends that the user save this report for future reference.
2.2 Site Considerations
Adequate site planning and preparation simplifies the installation process and results in a more
reliable system.
The user should ensure that the site has adequate electrical power, environmental controls and
protection against sources of electrical radiation and interference.
2.2.1 Power Sources
The power sources should be properly grounded and as free as possible from electrical interference.
If a redundant configuration is to be used, then each power cord on the RCS10 must be plugged into
its own separate power circuit. Each circuit must have its own independent circuit breaker.
Grounding is ac hieved automatically when the three-prong power plug is inserted into a power
receptacle. This should be checked by testing that there is no voltage present between the chassis
of the Switch and the power line ground.
Page A -1
RCS10 Technical Specifications Appendix A
The protective ground must not be bypassed with a three-prong to two-prong adapter or defeated in
any way. Defeating the ground may result in operator Injury or damage to the system.
2.3 Rack Mounting
To allow for the easy installation of cables and adequate air circulation through the units, a
minimum of six inches of clearance must be provided at the sides and rear of the units. In addition,
the RCS10 requires a minimum of 1-3/4 inches (1U) of clearance at the top of the unit.
The RCS10, when fully populated, weighs approximately 100 lbs. When installing into a rack
enclosure, a minimum of two technicians are required to minimize personal hazard.
2.3.1 DMD10 (Modem) Installation into the RCS10 Chassis
The RCS10 is shipped with the Modems (DMD10s) and External Reference Card packaged
separately for shipping purposes. All modems are universal and may be installed into any slot (1-9).
The External Reference Card is installed in slot 10.
2.4 Configuring the system
If either AC line cord remains connected to the RCS10, dangerous AC voltages will be present
within the unit and the cooling fans will also be operational. Although AC power is not present on
the backplane, care must be taken when installing or removing a plug-in module since DC voltages
will be present.
Before powering up the RCS10 or attaching cables to J12 (Sync Data RS422/RS485/V.35), the
following steps MUST be verified in order to avoid damage to the equipment. Ensure the following:
1. The cables must be wired correctly. Refer to Table 2-1, J12 Sync Data,
RS422/RS485/V.35;
2. The External Interface is programmed or supports the appropriate Interface type: RS232,
RS422, or V.35;
3. The Universal Interface Module (UIM) is configured for the appropriate Interface type:
RS232, RS422 or V.35.
Page 1-2
This is EXTREMELY IMPORTANT as the Interface pins operate at different voltage levels
depending upon the Interface type selected. SERIOUS DAMAGE may occur, for example, if
the External Interface is operating at V.35 voltage levels and the Universal Interface is
configured for RS422 voltage leve ls.
2.4.1 Modem Connections
All modem connections are made to labeled connectors located on the rear of the unit: The
connector definitions and pinout tables are shown below, and are those on the RCS10 unit and
Universal Interface Modules. Any connec tion interfacing to the modem must be the appropriate
mating connector. Refer to Figures 2-2 and 2-3 to locate the rear panel connectors.
2.4.2 Connector Pinout Tables
The following paragraphs and tables contain the pinout information for the various data/IF connectors
located on the rear panel of the RCS10.
2.4.3 Universal Interface Module (UIM) Connectors
The RCS10 chassis is shipped with the Universal Interface Modules installed. The following table
lists the signals, descriptions and directions for the connectors located on the UIM. Refer to Figure
2-2 for the three possible UIM configurations.
J1 - SD - SEND DATA
Unbalanced Send Data (SD) BNC connector located on the Interface Module. Data into the modem.
J2 - DDO - DROP DATA OUT
Unbalanced Drop Data Out (DDO) BNC connector located on the Interface Module.
J3 - IDI - INSERT DATA IN
Unbalanced Insert Data In (IDI) BNC connector located on the Interface Module.
J4 - RD - RECEIVE DATA
Unbalanced Receive Data (RD) BNC connector located on the Interface Module. Data out of the
modem.
1 RXD_B Receive Data B Output
2 RXD_A Receive Data A Output
Page A -11
RCS10 Technical Specifications Appendix A
3 TXD_A Transmit Data A Input
4 TXD_B Transmit Data B Input
5 GND Signal Ground ------6 DSR Data Set Ready Output
7 RTS Request to Send Input
8 CTS Clear to Send Output
9 NC No Connection ---------
J11 – Modem Status
Table 2-7.
J11- Modem Status 15-Pin ‘D’ Female
Pin No. Signal Name Signal Direction
1 Mod Fault - C MF-C No Dir.
2 Mod Fault - NC MF-NC No Dir.
3 Mod Fault - NO MF-NO No Dir.
4 Demod Fault - C DF-C No Dir.
5 Demod Fault - NC DF-NC No Dir.
6 Demod Fault - NO DF-NO No Dir.
7 Common Equipment Fault - C CEF-C No Dir.
8 Common Equipment Fault - NC CEF-NC No Dir.
9 Common Equipment Fault - NO CEF-NO No Dir.
10 Prompt - NO NC No Dir.
11 Prompt - NC NC No Dir.
12 Deferred - NO NC No Dir.
13 Deferred - NC NC No Dir.
14 Prompt C/AGC + AGC Out No
15 Deferred C/AGC - GND No
Page 1-12
Dir./Output
Dir./Output
2.5 External Reference Card Section
The External Reference Card plugs into slot 10 on the rear of the RCS10 (refer to Figure 2-3). The
External Reference module has one external IF reference input which is distributed to all ten DMD10
modems. Each modem’s on-board system oscillator can be individually locked to the external
reference.
Additionally, the external reference module can be equipped with a 10-7 high stability reference
oscillator that is distributed to all ten DMD10 modems providing a low-cost high-stability option. An
External IF Reference Output (J2) is also provided for distribution to other equipment.
Also, the external reference has one BNC clock input (J3) that is distributed to all ten modems.
Each modem control can independently select this external clock as its TX clock and/or RX buffered
clock source. The connections and descriptions are as follows:
J1 - EXT IF REF IN (BNC)
J1 provides an input for external clocking that can be selected by a particular modem (1-9). A
modem selecting this external clock will then lock its IF circuitry to this signal.
J2 - EXT IF REF OUT (BNC)
J2 provides a clock reference output that may either be the same as the input to J1 discussed
above or the onboard RCS10 high-stability reference.
J3 - EXT BNC CLK IN (BNC)
J3 is the External BNC Clock Input that can be selected by a particular modem (1-9) for data
clocking.
J4 - Remote RS485 I/O (9-Pin Female ‘D’)
J4 is the Remote RS485 I/O port. See Table 2-8 for the connector pinouts.
J5 - Remote Terminal Port (9-Pin Female ‘D’)
J5 is the RS C10 Remote Terminal Port. See Table 2-9 for the connector pinouts.
J6 - System Fault Summary Relays(15-pin Female ‘D’)
J6 is the System Fault Summary Relays connector. See Table 2-10 for J6 connector pinouts.
J7/J8 - Optional Remote Ethernet Connections - J8/10BASE-T (Twisted pair), J7/10BASE-2
Coaxial Transceiver Interface. See below for a description of these interfaces.
2.5.1 Ethernet Interface
With the Ethernet option installed, the software will sense its presence and enable the
corresponding display states. The user can select from three different cabling options: 10BASET,
10BASE2 and 10BASE5. The node ID address, the Ethernet chip operating modes, and the
configuration and initialization settings are user-selectable.
Only the 10BASET interfac e and the TCP/IP protocol are available with the basic Ethernet option.
10BASE2 and 10BASE5 cabling options, UDP/IP and Remote Terminal protocols, and TFTP,
TELNET, BOOTP servers are options.
1 TXD_MCS_B Transmit Data M&C B Output
2 Not Used
3 Not Used
4 Not Used
5 GND Ground
6 TXD_MCS_A Transmit Data M&C A Output
7 Not Used
8 RXD_MCS_B Receive Data M&C B Input
9 RXD_MCS_A Receive Data M&C A Input
1 Mod Fault - Common
2 Mod Fault - Normally Closed
3 Mod Fault - Normally Open
4 Demod Fault - Common
5 Demod Fault - Normally Closed
6 Demod Fault - Normally Open
7 Common Equipment Fault - Common
8 Common Equipment Fault - Normally Closed
9 Common Equipment Fault - Normally Open
10 SW - Normally Open
Page 1-14
11 SW - Normally Closed
12 MA - Normally Open
13 MA - Normally Closed
14 SW - Common
15 MA - Common
Page A -15
RCS10 Redundant Communication System Operation
Section 3 - Operation
3.1 Operating Procedures
Operation of the RCS10 consists of controlling the unit operating parameters and monitoring status
and responses via one of the control interfaces. Control options for the RCS10 are as follows:
1. Front Panel Control
2. Terminal Mode Control
3. Remote Computer Mode Control
4. Remote SNMP Control
Any of the above methods may be used separately or together to monitor and control the RCS10.
3.1.1 Front Panel Control
The front panel of the RCS10 allows complete control and monitoring of all Modem and Switch
parameters and functions via a keypad, LCD display, Modem and Switch status LEDs and LED
indicators on the DMD10 modems.
3.1.2 Front Panel Layout and Features
The RCS10 Front Panel layout is shown in Figure 3–1. The front panel is divided into the following
functional areas: the LCD front panel display, the Modem and Switch, the Keypad and the LED
Indicators, each described below. Refer to Table 3-1 for a brief description of the RCS10 front panel
controls and indicators.
3.1.3 Front Panel LCD Display
The front panel display is an 8 line by 40 character LCD display. The display is lighted and the
brightness can be set to increase when the front panel is currently in use. The LCD display
automatically dims after a period of inactivity that is programmable from the front panel.
The display has two distinct areas showing current information. The bottom row of the display
shows the functions of each of the four softkeys (labeled ‘S1’, ‘S2’, ‘S3’, and ‘S4’ in Figure 3-1). If a
softkey provides a function, then that function will be displayed just above the corresponding key. If
no function is displayed above a softkey, then there is no function associated with that key, and
pressing it will have no effect. The rest of the display shows current parameter and status
information. The LCD display is a window into a large matrix of switch and modem parameters that
can monitored and changed from the front panel.
The ten keys contained in the MODEM and SWITCH are used to view and change a particular set of
control parameters as described by the label next to the key. Each of these keys are used to
display a series of menu trees that are displayed on the LCD and used to view and enter control
parameters. These keys and their corresponding menus are described separately below:
3.1.4 Front Panel LCD Indicators
There are sixteen (16) LEDs on the RCS10 front panel to indicate the selected LCD menu tree and
current switch status. The color of the illuminated LEDs on the front panel indicate overall switch
status according to the following key: An illuminated green LED indicates normal operation. An
illuminated yellow LED indicates a condition that is not proper for normal operation, however, all
satellite channels are currently on-line. An illuminated red LED indicates that the RCS10 was
unable to provide redundancy protection for a satellite channel, and at least one channel is off-line.
For the purposes of this discussion, the LEDs are separated into two major groups, MENU LEDs
and SWITCH STATUS LEDs. The Menu LEDs are those LEDs immediately next to the front panel
TM058 - Rev. 2.3 Page 3-1
Operation RCS10 Redundant Communication System
keys in the MODEM and SWITCH groups, and the SWITCH STATUS LEDs are those in the
SWITCH STATUS group (see Figure 3-1).
Page 3-2 TM058 - Rev. 2.3
RCS10 Redundant Communication System Operation
Table 3-1. RCS10 Front Panel Control and Indicator Descriptions
Figure
3-1 Item
Number
1 Modem Section Modem Control. This group of keys is used to control
2 Front Panel LCD Display 8-Line by 40-character Liquid Crystal Display that
3 Reset Alarms PushbuttonReset Alarms. This key resets all RCS10 current and
4 Module SelectSelect current modem. This key selects which DMD10
5 Switch Status Status LEDs. These LEDs illuminate or extinguish to
6 Numeric KeypadNumeric keypad that allows the operator to enter
Description Function
the Ten DMD10 modems from the RCS10 front panel.
See paragraph 3.1.5 below for a detailed listing of these
six functional pushbuttons.
allows the operator to communicate with the RCS10.
latched minor and major alarms.
modem is currently being controlled by the ‘MODEM’
group of function keys.
indicate the current RCS10 M:N Switch status and
modes of operation.
numeric parameters on the front panel display, clear an
entry or enter inputted data.
7 Soft Keys 1 through 4 Located below the LCD display, these function
pushbuttons correspond to the displayed data and
prompts on the bottom line of the LCD display. These
function keys allow the operator to make choices, scroll
backward or forward, and enter specific parameters.
8Switch Section Switch Control. These function keys allow for control of
the RCS10 M:N Switch. See paragraph 3.1.6 for a
detailed listing of these four function keys.
TM058 - Rev. 2.3
Page 3-3
Operation RCS10 Redundant Communication System
3.1.5 RCS10 Modem Section LED Indicators
The following RCS10 Modem Section LED Indicators will illuminate when any one of the
following selection pushbuttons have been depressed.
NOTE: Refer to the front panel illustrations in this section for detailed screen
displays.
1. Mod Config: Allows operator to set all DMD10 Tx parameters starting at the top
level screen. These parameters include the following: Mode, Frequency, Data Rate,
Framing, Inner and Outer FEC, Modulation type, Scrambler type and Filter Mask.
2. Demod Config: Allows operator to set all DMD10 Rx parameters starting at the
top level screen. These parameters include the following: Mode, Frequency, Data
Rate, Framing, Inner and Outer FEC, Modulation type, Scrambler type and Filter
Mask.
3. Intfc Config: Takes the operator to the Interface Configuration settings main
screen. Pressing this key brings up a series of menus on the LCD that allow
control of the terrestrial interface for the currently selected modem. The currently
selected modem can be changed by pressing the MODEM SELECT key.
4. Monitor: Pressing this key brings up a series of menus on the LCD that allow the
monitoring of status parameters for the ten RCS10 modems. The status
parameters include Mod and Demod status, voltage levels and Stored Event status.
5. Test: Pressing this key brings up a series of menus on the LCD that allow testing
of the ten RCS10 modems. Tests that can be performed include the following:
Baseband loopback, Terrestrial loopback, IF loopback, Carrier Mode, Inject Mod
fault and Inject Demod fault.
6. Alarms: Pressing this key brings up a series of menus on the LCD that allow the
monitoring of major, minor and latched alarms for the ten RCS10 modems. The top
level menu shows the currently selected modem’s Mod and Demod summary
alarms.
3.1.6 Redundancy Switch Front Panel Section LED Indicators.
1. Switch - Config Switch
Pressing this key brings up a series of menus on the LCD that allow control of the
RCS10 M:N Switch configuration parameters.
2. Switch - Config System
Pressing this key brings up a series of menus on the LCD that allow control of the
RCS10 M:N Switch system, monitor & control, and communication parameters.
3. Switch - Monitor/Alarms
Pressing this key brings up a series of menus on the LCD that allow monitoring of
major and minor alarms and control of alarm masking for the RCS10.
4. Switch - Test
Pressing this key brings up a series of menus on the LCD that allow testing of the
RCS10 M:N Switch configurations and connections.
Page 3-4 TM058 - Rev. 2.3
RCS10 Redundant Communication System Operation
3.1.7 Menu LED Indicators
Each Menu LED corresponds to the MODEM group or SWITCH group key located to the right of the
LED. When lit, these LEDs indicate which menu tree is currently active on the LCD. For example,
if the SWITCH-TEST LED is illuminated, then the LCD is displaying one of the menus that allow
control of RCS10 test modes.
3.1.7.1 SWITCH STATUS LED Indicators (Color as indicated below)
Normal: Green - indicates that the unit is currently under power
Major Alarm: Red- indicates that at least one satellite channel did not receive redundancy
protection and is off-line.
Minor Alarm:Yellow - indicates that a redundancy warning exists and the RCS10 may not be
providing redundancy protection.
Test Mode: Yellow - indicates that the switch is performing one of the system tests.
Event: Yellow - indicates that a condition or system event has occurred that the RCS10
has stored in memory. The events may be viewed from the Front Panel
or from the Terminal port.
Remote:Green - indicates that the unit is set to respond from either the Terminal port or the Remote M&C port
3.1.8 Local/Remote Control
The switch operates in both Local and Remote modes. In Local mode, changes to the system’s
configuration can be implemented only from the RCS10 front panel. Remote access to the system
is limited to a query of status information only. While in the local mode, the switch responds to
remote commands with the Error Message ‘Not Allowed in Local Mode.”
In Remote Mode, configuration commands can be issued from a ‘Dumb’ terminal, a computer, or a
network through the system’s built-in Ethernet channel. The terminal and computer interfaces to
the switch are mutually exclusive. In Remote mode, all front panel switches used to change
operating parameters are locked out and changes can only be made remotely. LEDs and displays
remain operational, however.
The only configuration command allowed into the system, whether it is in Local or Remote mode, is
a change in Control mode. The user can command the system to go into local or remote modes
from the front panel, dumb terminal, computer M&C or a network.
3.1.9 Terminal Control
The switch will emulate a WYSE-50, ADDS -VP or VT-100 dumb terminal. It will display a Main
Menu and prompt the user to select the equipment to monitor and control. If the system is in
Remote mode, configuration paramet ers can be altered. If the system is in Local mode, however,
no commands are allowed except for a control mode change.
Terminal mode has several basic display screens that show the current status of the RCS10’s
modes and variables. The screens will show both status and control variables. Only the Control
variables can be modified. To modify a variable, the user will enter the variable number at the
prompt followed by a carriage return. The cursor then will move to the variable area and the user will
either type in a new value or press the space bar to scroll through the available selections.
3.1.10 Remote M&C Interface
The interface to a remote computer and monitor system is done through the Radyne ComStream
RLLP protocol. There are two types of packets the switch can receive; Direct and Encapsulated.
Direct packets are those intended for the switch, and Encapsulated packets are those intended for
the modem or the UIMs. The Encapsulated packets are embedded in the switch’s relay command.
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3.1.11 SNMP Control
The Simple Network Management Protocol (SNMP) is used to monitor and control the RCS10
Switch parameters when the Switch is connected to a network. On a network, a client is one host,
an SNMP Manager communicates with a server in another host, an SNMP Agent. The Manager, a
remote M&C, requests the agent (RCS10 Switch) to read or write information (objects) in a
Management Information Base (MIB) resident in the Agent. Refer to Addendum A in the back of the
manual for additional information and a complete compilation of the RCS10 MIB.
3.1.12 Manual/Automatic Backup Modes
The switch operates in both Manual and Automatic backup modes. In Automatic Mode, a failed
unit will be automatically replaced with a Backup unit if a Backup unit is available. However, if an
online Modulator or Demodulator fails while it is set to Manual mode, it will not be automatically
backed up.
There are two types of Automatic backup modes; Revertive and Non-revertive. In Automatic
Revertive mode, a failed unit is replaced with the backup unit after the fault delay time has passed.
The failed unit continues to be monitored and if the failure condition clears itself, and another failure
occurs with no available backup units, then the Switch will automatically ‘Unback’ the passing unit
and then backup the newly failed unit. In Automatic Non-Revertive mode, a failed unit is replaced by
the Backup unit after the Fault Delay time has elapsed. However, if the failure condition clears itself,
the Switch does not return the failed unit bac k online if another monitored unit fails and no backup
units are available. The failed channel can be unbacked manually using the <BACKUP> front panel
selection.
3.1.13 Standby Modes
A backup unit can be set to three standby modes; self-test, hot standby and preemptable. In self-
test mode, the backup Modulator’s IF output is looped into the IF input of the backup demodulator
and performance is continually checked.
In hot standby mode, the backup modulator and/or demodulator settings are matched to that of a
priority online modulator and/or demodulator so that if a modulator and/or demodulator fails, it will
immediately be replaced by a backup. The other modems are still monitored and will be backed up,
but the switchover will be longer.
In preemptable mode, the backup modulator or demodulator is used online. However, if another
modem, covered by the backup fails, the backup will be preempted and will backup the failed
modem.
3.1.14 Test Port Operation (Operational on Backup Modem 2 Only)
The backup channel’s terrestrial interfaces can be used to test the operation of the channels that
they cover. On the modulator side, the test port can be tied to any modulator that the backup is
monitoring and used to inject baseband test signals into the online modem. On the demodulator
side, the test port is used to monitor the demodulator output of the online modem. The user can
set the test port selections by specifying the modulator and/or demodulator that is connected to a
backup’s Mod and Demod test ports from any of the available user interfaces.
3.1.15 Backup/Online
When a modem is first installed into the RCS10, it is set up as an online unit by default. It is up to
the user to change its configuration from ‘online’ to ‘backup,’ and to set up a backup pool for it if
configured as a backup, or add it or remove it from a backup pool if set up as online. These
configuration settings are performed on the front panel through the <SWITCH CONFIG> key.
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The backup algorithm operates in both manual and automatic reve rtive and non-revertive modes with
automatic backup assignments and priority levels. There is a limit on the total number of backup
attempts for any prime. Once a failed prime is flagged for backup, a ‘ * ‘ is displayed on the prime
backup assignment front panel screen to indicate a backup is in progress. A ‘ B ‘ or a ‘ BB ‘ will
replace the ‘ * ‘ if the backup is successful, otherwise another backup attempt is made. After three
failed backup attempts, an ‘ F ‘ or ‘ FF ‘ is displayed and the prime is remove d from the ‘backup
modem’ backup pool. No further backup attempts are made. The backup modem is now available to
backup any other failed prime in its pool.
There are two ways a failed prime can be placed back in the backup pool. The first is when the
summary fault status changes, the other is through user intervention. Setting of the backup
assignment, priority, and backup modes clears the total number of backup attempts.
3.2 Guide to Front Panel Monitor and Control
The front panel can be used to perform complete monitor and configuration of the RCS10. The
operation of the front panel becomes easy after a short period of use in which the user becomes
familiar with the basic concepts and operations. Front panel control is implemented as a series of
data entry ‘screens.’ The screens are organized into several groups that contain related
parameters and status values. Screens allow the modification of control parameters, display of
status parameters, or both. Different screens will be displayed on the front panel based on
keypresses from the front panel. The screens will be displayed in order; this order defines the
‘menu tree’ for a particular group of related screens.
3.2.1 Remote Port Control
When in Computer Mode, the RCS10 uses an RS485 Serial Control Port (Remote Port) for use with
computer-controlled remote monitor and control systems. The Remote Port is a 9-pin female ‘D’ sub
connector (J3) located at the rear of the unit on the External Reference Card. The pinouts for the
remote port are listed in Section 2. The remote port supports standard UART asynchronous
protocol with 8 data bits, no parity, and 1 stop bit (8N1) at 4 baud rates: 9600, 4800, 2400, and
1200. The Remote Port utilizes a binary protocol called Radyne Link Level Protocol (RLLP). The
RLLP is a multi-drop, packet -oriented protocol with handshaking, and is described in Appendix B at
the end of this manual.
3.2.2 Terminal Port Control
When in Terminal Mode, the RCS10 uses an RS232 serial port (Terminal Port) for use with a
separate terminal or computer running a terminal emulation program. The Terminal Port is a 9-pin
female ‘D’ sub- connector (J2) located at the rear of the unit on the External Reference Card. The
pinouts for the RS232 port are listed in Section 2, “Installation.” The terminal port supports
standard UART asynchronous protocol with 8 data bits, no parity, and 1 stop bit (8N1) at 3 baud
rates; 19200, 9600, and 2400.
The Terminal Interface is menu-driven and allows complete monitoring and control of all RCS10
parameters. Three terminal emulation protocols are supported: DEC VT-100, Wyse-50, and ADDS
Viewpoint. The terminal display is a full-screen presentation of the current status of the RCS10
modes and variables. The screens will display both status and control variables. The status
variables cannot be modified, but the control variables can be. Each variable that can be modified
will have a display number next to the value. Changing the value is accomplished by typing the
number of the variable to be changed. Two types of input may then be requested from the user. If
the input is multiple choice, the space key must be pressed to cycle the available choices until the
desired value is displayed. The ‘Enter’ or carriage return key must then be pressed for the new
value to take effect. If the input is numerical, the desired value should be typed using number keys
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(‘0’ to ‘9’), then pressing the ‘Enter’ key. An input can be aborted at any time by pressing the ‘ESC’
key. If an invalid value is entered, an error message will be displayed on the terminal.
Following a valid input, the RCS10 places the new settings into nonvolatile RAM, changing the
switch configuration immediately and storing the configuration for the next time the unit is powered
up.
3.3 Backup Ha ndler
The switch operates both in manual and automatic backup modes. In automatic mode, a failed unit
will be automatically replaced with a backup unit if a backup is available. However, if an online
Modulator or Demodulator fails while it is set to manual mode, it will not be automatically backedup. Backup mode is accessed in the <CONFIG SWITCH> menu.
To manually back up a modem, set the desired backup (1 or 2) to ‘Manual’ in the <CONFIG
SWITCH> menu and then in <FORCE MANUAL BACKUP>. Also, in the <CONFIG SWITCH>
menu, select the backup that is in ‘Manual’ mode and enter the number of the prime modem to be
backed up. Backup 2 can select available modems between 1-8. Backup 1 can select available
modems between 1-8 or 1-9 if backup 2 is set for traffic.
There are two types of Automatic Backup Modes: Revertive and Non-revertive. In Revertive mode, a
failed unit is replaced by the Backup unit after the fault delay time passes. The failed unit continues
to be monitored, and if the failure condition clears itself and another failure occurs with no available
Backup units, then the SWITCH will automatically unback the passing unit and then back up the
newly failed unit.
In Non-revertive mode, a failed unit is replaced by the Backup unit after the fault delay time passes.
However, if the failure condition clears itself, the SWITCH does not return the failed unit back online
if another monitored unit fails and no Backup units are available. The failed channel can be
unbacked manually by setting the BACKUP unit to manual using the front panel <BACKUP>
selection located in <CONFIG SWITCH> and instructing it to manually back modem #0.
There are two types of delays available to the user in the RCS10 Switch. The Fault Delay time for
each Modulator and Demodulator is preprogrammed by the operator to be between 0 and 299.9
seconds through the <CONFIG SWITCH> Menu. The SWITCH continually checks for the return of
a good signal during the delay time. If the signal returns, no switchover takes place and the timer is
reset. If more than one unit fails, the first one to timeout will be the first one that is replaced until no
Backup units are available.
If the unit is still inoperative at the end of the delay time, and the backup unit is available, then the
backup tak es place. If the backup unit is in both automatic and hot standby modes, then if the
online unit (the one the backup is standing by for) fails, it will automatically be backed-up regardless
of fault delay.
The other type of delay available to the user is the Acquisition Delay. This is the amount of time it
takes the Demodulator to acquire lock. When a Prime fails, the backup unit has up to the
programmed Acquisition Delay to lock. If it fails to lock, a Major Alarm is asserted along with a
descriptive event logged in the Event Buffer. Backup status faults will also be generated to ‘Flag’ the
unsuccessful backup.
The Backup Modem has up to three attempts to successfully backup a prime. If it fails, an ‘F’ or
‘FF’ is displayed on the Backup Summary front panel screens and the Prime is removed from the
‘Backup Modem’ backup pool. No further backup attempts are made.
Nine different priority levels may also be set and are used by Revertive switching to make a decision
to drop a link that is already being backed up in favor of another link of higher importance. As long
as a free backup modem remains, that backup will handle the outage. Should no free backups
exist, then any outage is considered for backup on a priority basis. Priority is set with 1 being
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highest and 9 being lowest priority. Priority setting may be accessed in the <CONFIG SWITCH>
menu.
3.3.1 1:N or 2:N Switching
The SWITCH is very flexible in set -up options. It may be set up as M:N or 2 1:Ns simply by
instructing the switch as to which backup is assigned which primes for auto-mode backup. This is
located in the <CONFIG SWITCH> menu. Setting Backup 1 and Backup 2 for M/D or MD backup
(Mod/Demod or Modem switching respectively) of all 8 primes would give a 2:8 switch setup. If
backup 1 were set for M/D or MD backup of prime 1, 2, 3 and backup 2 were set for M/D or MD
backup of primes 4, 5, 6, 7, 8, then this would net two 1:N setups with the first being a 1:3 and the
second being a 1:5. Any combination using the available backups and primes can be achieved.
Additionally, if backup 2 were set for traffic (again in the <CONFIG SWITCH> menu) instead of
backup operation, you could then achieve a switching of 1:9.
3.4 RCS10 ‘Learn’ Feature
This section describes the Learn and the Backup Test feat ures
3.4.1 Description
During backups, when primes modems are failing, it is essential that a good known system
configuration be used. In order to ensure that the backup process is successful, the Learn and
Backup Test features are used to complement the backup algorithm by providing a snapshot of a
known good state of the system.
The switch holds images of all modems current status and control parameters. These can be
viewed and/or modified through the front panel, computer, and Ethernet interfaces. Once satisfied
with the system’s operation, the user can, at any time, initiate a Learn of one or all the modem
parameters. The latter are to be used during backups (learned modem configuration) and are stored
in nonvolatile memory.
The Backup Test Feature can be used in conjunction with the Learn Feature to ensure that the
backup is capable of backing up primes that are part of its pool.
Here is the three-step process:
- Assign a backup(s) to the prime modem(s) to be learned;
- Learn the prime modem(s);
- Ens ure that the assigned backup(s) is capable of backing up the prime modem(s).
It is essential that the user learn the configuration of the prime modems in the system. During
backups, if the prime modem configuration has previously changed, the backup modem(s) will be
configured with the older parameters.
Learned and current modem configuration images are periodically monitored for any discrepancies.
A switch minor alarm as well as module alarm status bit(s) are asserted if there are differences
between the two. To draw the user attention to the prime modem configuration change, the switch
minor alarm LED flashes if the configuration change alarm status is not masked. Once a modem is
part of an auto backup pool, the user shall be notified of any changes to the modem configuration.
User intervention will be required to acquire a new modem’s configuration.
3.4.2 Alarms & Reports
Every time a modem is queried, its learned and current configurations are compared. Any
differences are time/date stamped and logged as a warning event. A switch minor alarm and a bit(s)
in the switch module status alarms are asserted as well. If the prime modem configuration change
alarm status is not masked, the switch minor alarm LED also flashes.
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Operation RCS10 Redundant Communication System
Backup modem is unable to backup prime. The return error,
Every time a backup test fails, an event is time/date stamped and logged as an alarm event. A
switch minor alarm and bits in the switch module status alarms indicate the backup test status of
the particular prime. These bits reflect the status of both backup 1 and 2.
Popup error messages or error returns are also generated whenever commands to learn a modem or
modems are unsuccessful. Possible errors are as follows:
MODEM_NOTPRESENT = Modem not present
MODEM_NOBACKUP = Modem not part of a backup pool
MODEM_COMMERROR = Modem communication error
Popup error messages or error returns are also generated whenever commands to test a backup’s
capability to backup primes that are part of its backup pool. Possible errors are as follows:
MODEM_NOTPRESENT = Modem not present
BACKUP_NOTPRESENT = Backup modem not present
IOCARD_NOTPRESENT = I/O card not present
MODEM_NOBACKUP = Modem not part of a backup pool
MODEM_COMMERROR = Backup modem communication error
MODEM_PARAMETER = Backup modem is unable to backup prime. The return error
in this case might be specific to the parameter in question
MODEM_CONFIGCHANGED = Modem’s configuration has changed
Popup error messages or error returns are also generated for the copy modem configuration
command. Possible errors are as follows:
MODEM_NOTPRESENT = Modem not present
IOCARD_NOTPRESENT = I/O card not present
MODEM_COMMERROR = Backup modem communication error
MODEM_PARAMETER =
in this case, might be specific to the parameter in question
NOTE: During backups, the switch uses the learned parameters of the primes it’s attempting to
backup. It is essential that the user learns the current configuration of the primes to guarantee user
desired operation. The learned parameters are also used in the Backup Test and Copy features.
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3.4.3 Service Mode
On occasion, it is necessary to remove a modem from the RCS10 chassis for service (hardware
changes, firmware updates etc.) If the Switch is in Automatic Backup Mode, the modems must be
placed in ‘Service Mode’ to remove it from the Backup Pool and stop a backup from taking place. To
place a modem in Service Mode, press the front panel ‘Config System’ key and then press softkey
‘S4’ (Next) until the ‘Modem Service Mode’ screen is displayed. To modify a Modem Service
selection, press softkey ‘S1’ (Service), and use the right and left arrows to highlight the modem to
change and then press softkeu ‘S3’ (TOG MODE) to toggle the Modem Service selection. Finally,
press the Enter key ‘ENT’ for the selection to take effect.
3.4.3 Interface Card (I/O) Configuration
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RCS10 Redundant Communication System Operation
Each Modem and I/O card in an RCS10 slot operates in sync. Each slot in the RCS -10 system
consists of a DMD-10 modem and an IO card. The modem parameters are stored in non-volatile
memory allowing the modem to return to its previous settings and configuration upon reset, power
up, or hot insert. The I/O card parameters, on the other hand, are stored in the switch CPU card and
are associated with the particular slot the I/O card is plugged into. This allows the newly inserted
I/O card to match the operation of the modem already present in that particular slot. For instance, if
an I/O card is moved from slot 2 to slot 4, it will get re-programmed with the saved parameters of
slot 4. It is necessary for the us er to make sure that the I/O card is programmed with the desired
parameters. Reprogramming the overhead and the interface types is recommended and might be
necessary.
Due to the nature of the RCS10 system whereas the DMD10 modems are completely independent
of the interface cards, the channel’s overhead parameters, both Mod and Demod, must be entered
or reentered on initial setup of a channel. This is also true if a DMD10 modem is moved from one
channel to another or if an interface card is moved from one channel to another. This can be done
by either reentering the framing (96 Kb for IDR, 16/15 for IBS) or by reentering the mode setting (IDR
or IBS) under both the Mod config. and Demod config.
When a prime is backed up, the backup modem uses the prime’s I/O card to carry traffic. At times,
the prime is placed in Service Mode, modified and reinserted into the RCS10 chassis. The user
must not make any modifications to the interface card as it may cause interruptions in traffic. Some
modem parameters such as Ove rhead, ESC Source and External EXC Source are relayed to the
I/O card as well.
3.4.4 Modem/I/O/Switch Communications
The RCS10 Switch M&C periodically queries the Modems and I/O card for current configuration and
status. upon power-up or hot insert, the I/O cards are initialized according to the parameters
associated with the slot. In case of failure, the Switch M&C logs a descriptive event in the event log,
sets a Minor Alarm, and asserts the appropriate faults. It will then periodically attempt to initialize
the failed I/O card.
The Modem parameters on the other hand are saved in the Modem’s non-volatile memory allowing
the modem to return to its previous settings. The Switch periodically queries the modem for updates
to its configuration. When a communication failure occurs, the Switch M&C takes the appropriate
actions, but there are side-effects; the front panel updates seem sluggish and commands to the
other Modems and I/O cards take longer to execute. The communication problems should be
resolved for proper operation to resume. The ‘MODEM CHANNEL CONNECTION TEST,’ Alarm
Status and Event Log should be used to help determine where the communication failure is
occurring.
3.4.5 Configuration Copy
The Configuration Copy is a feature that enables a user to store/retrieve up to five modem and
interface card configurations in non-volatile memory. These are in addition to the current running
configuration.
The interface card configurations are tagged to the slot, and are stored in the switch. The modems,
on the other hand hold their own settings. The user can copy from and copy to any configuration in
memory including the current running configuration. Source and destination configurations must be
different.
When instructed to copy a configuration, the switch sends a command to the modem to copy the
configuration, and if successful, the switch updates the slot configurations as well. If the
destination configuration is the current configuration, the modem re-initializes itself and uses the
new settings. The switch interface card is only updated when the destination configuration is the
current configuration.
A user must be careful not to copy onto the current configuration unless that is desired, or
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Operation RCS10 Redundant Communication System
disruptions in traffic will occur.
3.5 Modem Checkout and Initial Power-up
The following descriptions assume that the RCS10 is installed in a suitable location with AC power
applied to both slide out power supplies.
NEVER apply power to the slide-out power supply modules unless they are firmly
seated in the RCS10, as there is a potential shock hazard at the AC/DC converter
within the module.
Turn the unit on by switching both AC power switches (located above the power entry connectors at
the rear of the RCU10) to the ‘ON’ position. At power-up, the switch processor performs a selfdiagnostic before beginning the primary monitor/control program. If a failure is detected during the
power-up tests, the Major Alarm LED will illuminate. If there is no failure, there will be no indication
on the front panel.
The initial field checkout of the switch can either be accomplished from the front panel or from a
terminal connected to the Terminal Port. Using a terminal has the advantage of providing full screen
access to all of the switch parameters, but requires a separate terminal or computer with terminal
emulation software. If a terminal is used, the Terminal Port baud rate must first be set from the front
panel.
NOTE: Upon power-up or ‘Hot Insert’ of the Universal Interface Modules (UIMs), the operator must
set up the UIMs to the desired Interface Type. This can be accomplished by depressing the front
panel ‘INTFC CONFIG’ key, selecting soft key ‘1’ or ‘2’ and then programming the applicable UIM
interface type.
3.5.1 RCS10 Front Panel Data Entry Screens
Control from the front panel of the RCS10 is implemented through a series of data entry screens
that are displayed on the front panel LCD. The screens are organized into groups of related
parameters and status values. Within a single group, the screens are displayed on the LCD in a
particular order; this order defines the ‘menu tree’ for that particular group of screens. Each menu
tree is accessed by depressing one of the following keys on the RCS10 front panel:
MOD CONFIG, DEMOD CONFIG, INTFC CONFIG, MONITOR, TEST and ALARMS in the MODEM
group, or CONFIG SWITCH, CONFIG SYSTEM, MONITOR/ALARMS , and TEST in the SWITCH
group. For example, pressing the CONFIG SWITCH key causes CONFIG SWITCH SCREEN 0 –
BACKUP MODE CONFIGURATION to be displayed on the LCD. The first screen of each menu tree
is called the top level screen for that particular menu tree.
3.5.2 Basic Front Panel Controls
Once the top level screen for a particular menu tree is displayed, either the parameters on the
screen can be edited, the next screen in the menu tree can be displayed, or the previous screen in
the menu tree can be displayed. Each of these actions is discussed in detail below.
3.5.2.1 Changing Parameters from the Front Panel
Whenever there is a parameter that can be changed or edited from the front panel, the first
character of the parameter value will highlight with a blinking box. This box is called the cursor,
and the cursor defines what parameter is currently being edited. If there are several parameters on
one screen, two of the softkeys will be labeled ‘<---’ and ‘--->‘. These keys are used to move the
cursor from one parameter to the next, and therefore any of the configuration parameters displayed
on the screen can be edited. The left arrow (‘<---’) moves the cursor to the left, and the right arrow
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RCS10 Redundant Communication System Operation
(‘--->‘) moves the cursor to the right. If the cursor is at the beginning or end of a row containing
several parameters, the cursor will wrap to the opposite side of the display.
Editing a configuration parameter value is accomplished in one of several ways. If the parameter is
numerical, the desired value should be entered from the numeric keys. Occasionally, the numeric
values can be incremented and decremented by pressing softkeys labeled ‘UP’ and ‘DOWN’
respectively. In either case, when all of the numerical parameters have been edited to the desired
values, pressing the ENTER key will execute a load of the parameters into memory, and then
advance to the next screen in the menu tree. Pressing the CLEAR key will not execute a load of
parameters into memory (the original parameter values before editing will be retained), and then
move to the previous screen in the menu tree.
If a parameter has a non-numeric value, the allowed values for that parameter can be edited by
pressing softkeys with the desired values. In cases where there are multiple parameters shown on
a screen, the values are edited with the softkeys and loaded by pressing the ENTER key, which
also advances to the next screen in the menu tree. Pressing the softkey labeled ‘NEXT’ or
‘PREVIOUS’ will abort loading the parameters into memory, and advance to the appropriate screen.
In cases where there is a single parameter shown on a screen, pressing the softkey labeled with
the desired value will immediately load the parameter into memory. In this case, the parameter load
can be aborted by pressing the CLEAR key, which will return to the previous screen, or by pressing
the softkey labeled ‘NEXT’, which will advance to the next screen in the menu tree and so on.
3.5.2.2 Moving to the Next Screen in a Menu Tree
If the user desires to advance to the next screen in the menu tree, the softkey labeled ‘NEXT’
should be pressed. Some submenu screens can only return to a previous screen, in this case a
softkey will be labeled ‘RETU RN’. In either case, if any numerical parameters are being edited, the
values will not be loaded into memory. When the last screen of a menu tree is reached, advancing
to the next screen will wrap to the first screen of the menu tree.
3.5.2.3 Moving to the Previous Screen in a Menu Tree
If the user desires to advance to the previous screen in the menu tree, the CLEAR key should be
pressed. If any numerical parameters are being edited, the values will not be loaded into memory.
If the clear key is pressed while the first screen of a menu tree is displayed, the previous screen will
wrap to the last screen in the menu tree.
3.6 Summary of Basic Front Panel Controls
Shown below is a table describing the functionality of the front panel keyboard in relation to front
panel control:
ENTER Loads edited values into memory and advances to next screen in the menu tree.
CLEAR Aborts loading values into memory and moves to the previous screen in the menu tree.
NEXT
Aborts loading values into memory and moves to the next screen in the menu tree.
(softkey)
PREVIOUS
Aborts loading values into memory and moves to the previous screen in the menu tree.
(softkey)
Numeric Keys Used to edit numeric parameters.
3.7 DMD10 Modem Strap Codes (Quick Set Keys)
The Strap Code is a quick set key that conveniently sets many of the modem parameters. For
quick setup of the DMD10, Strap Codes are very helpful. When a Strap Code is entered,
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Operation RCS10 Redundant Communication System
the modem will be configured for the code’s corresponding data rate, overhead, code rate, framing,
scrambler type and modulation. Refer to Table 3-2 below for a listing of the available RCS10 Strap
Codes.
NOTE: The Strap Codes are only used to configure the Modems with the predefined settings. It
might be necessary to reconfigure the Modem’s associated I/O Card, Overhead, Interface type etc.,
for the system to operate properly.
The following examples are designed to show the operator various configuration setups while
becoming familiar with the structure of the RCS10 operational menus.
a. To set the RCS10 for Drop and Insert Operation, perform the following:
- Press 'MODULE SELECT' button and enter modem number to setup.
- Press '’MOD CONFIG' button.
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Operation RCS10 Redundant Communication System
- Press 'DATA RATE' soft key.
- Press 0 5 1 2
- Press 'ENT' button. (You have now selected a data rate of 512 Kbps).
The modem will now ask “Do you want the transmitter turned back on” Select Yes or No as
desired.
- Press 'MODE' soft key.
- Press 'DRP & I' soft key.
The modem will now ask if you want the transmitter turned back on. Select Yes or No as desired.
- Press 'DEMOD CONFIG' button.
- Press 'DATA RATE' soft key.
- Press 0-5-1-2
- Press 'ENT' button. (You have now selected a data rate of 512 Kbps).
- Press 'MODE' soft key.
- Press 'DRP & I' soft key.
- Press 'INTF CONFIG' button.
- Press 'NEXT' soft key.
- Press 'TX TYPE' soft key.
- Press 'UP' or 'DOWN' soft key repeatedly to scroll through the interface formats until
G.703.U.E1 appears.
- Press 'ENT' button.
- Press 'RX TYPE' soft key.
- Press 'UP' or 'DOWN' soft key repeatedly to scroll through the interface formats until
G.703.U.E1 appears.
- Press 'ENT' button.
- Press 'NEXT' soft key until you get to the display where you can change the 'TX D&I
MODE'.
- Press 'MODE' soft key.
- Press 'MORE' soft key.
- Press 'PCM -30' soft key.
The modem will now ask if you want the transmitter turned back on. Select Yes or No as desired.
- Press 'NEXT' soft key.
- Press 'MODE' soft key.
- Press 'MORE' soft key.
- Press 'PCM -30' soft key.
- Press 'NEXT' soft key until you get to the display where you can change the 'T1E1
FRAME SOURCE'.
- Press 'T1E1' soft key.
- Press 'EXTERNAL' soft key. (The modem will automatically select buffer clock source to
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RCS10 Redundant Communication System Operation
EXTEXC and the EXTEXC source to IDI since these are required modes to run EXTERNAL
FRAMING).
- Press 'NEXT' soft key until you get to the display where you can set 'TX D&I MAPPING'.
- Press 'COPY' soft key.
- Press 'UP' or 'DOWN' soft key until 'ROM8’ is displayed.
- Press 'CURSOR' soft key.
- Press 'UP' or 'DOWN' soft key until 'TX EDIT' is displayed.
- Press 'ENT' button.
- Press 'COPY' soft key.
- Press 'UP' or 'DOWN' soft key until 'TX EDIT’ is displayed.
- Press 'CURSOR' soft key.
- Press 'UP' or 'DOWN' soft key until 'TX ACTIVE' is displayed.
- Press 'ENT' button.
- Press 'NEXT' soft key. (See RX D&I MAPPING).
- Press 'COPY' soft key.
- Press 'UP' or 'DOWN' soft key until 'ROM8" is displayed.
- Press 'CURSOR' soft key.
- Press 'UP' or 'DOWN' soft key until 'RX EDIT' is displayed.
- Press 'ENT' button.
- Press 'COPY' soft key.
- Press 'UP' or 'DOWN' soft key until 'RX EDIT" is displayed.
- Press 'CURSOR' soft key.
- Press 'UP' or 'DOWN' soft key until 'RX ACTIVE' is displayed.
- Press 'ENT' button.
These settings load slot 1 with channel 1, 2 etc. To set specific Terrestrial time slot to a specific TX
Sat Ch, you would use 'EDIT' soft key.
b. Set RCS10 as follows to force a manual backup from prime #4 to backup #1:
- Press 'CONFIG SW' button.
- If BACKUP1 MODE: MANUAL you may skip the setting of manual.
- Press 'BU1 MODE' soft key to select BACKUP #1.
- Press 'MANUAL' soft key to place BACKUP #1 in MANUAL mode.
- Press 'NEXT' soft key until you reach 'MODEM SWITCHING STYLE' display.
- Press '< ---' or '--->' soft key until 4 is highlighted.
- Press 'TOG MODE' soft key until modem 4 shows a 'U' (Unit or dependent switching).