3.2Setup and Configuration ......................................................................................................................... 3-2
3.5Menu System ............................................................................................................................................3-7
3.5.1.5Monitor Menu .............................................................................................................................. 3-17
CHAPTER 4. THEORY OF OPERATION...................................................................4-1
4.1Monitor and Control (M&C)..................................................................................................................4-1
4.1.1Theory of Operation ........................................................................................................................... 4-2
4.2SMS-301 Data Interface .......................................................................................................................... 4-3
5.2Test Points and LEDs...............................................................................................................................5-3
Figure 3-3. Main Menu.........................................................................................................................................3-9
Figure 3-4. Configuration Switch Control Menu................................................................................................3-10
Figure 3-5. Configuration System Menu............................................................................................................ 3-12
Figure 3-6. Configuration Save Menu................................................................................................................ 3-15
Figure 3-11. Utility System Menu...................................................................................................................... 3-22
Figure 3-12. Utility Modem Control Menu........................................................................................................3-26
Figure B-1. System Installation (Standard Configuration)..................................................................................B–3
Figure B-2. System Installation (RS-301 Installed).............................................................................................B–6
Figure C-1. Connect to SDM-2020 Modulator with LVDS Interface.................................................................C–3
Figure C-2. Connect to SDM-2020 Modulator with EIA-422 Interface..............................................................C–5
Figure C-3. Connect to SDM-2020 Modulator with EIA-422 (DVB) TX Interface (18 Mbit/s Serial Data).....C–8
Figure C-4. Connect to SDM-2020 Modulator with EIA-422 (DVB) TX Interface (100 Mbit/s Parallel Data)C–11
Figure C-5. Connect to SDM-2020 Modulator with I/O Connector, 25-Pin Interface......................................C–13
viRev. 3
SMS-301 Redundancy SwitchPreface
Tables
Table 1-1. Board List1–4
Table 1-2. LED Status Indictors1–5
Table 1-3. 1:1 Switch Specifications1–6
Table 2-1. Rear Panel Connectors (Standard Configuration)2–4
Table 2-2. Rear Panel Connectors (With RS-301 Option)2–4
Table 2-3. Switch Control Interface Signals2–5
Table 2-4. Data I/O Connector, 50-Pin2–6
Table 2-5. Data I/O Connectors, 37-Pin2–7
Table 2-6. Connector Assignments , 25-Pi n2–8
Table 2-7. Connector Assignments , 37-Pi n2–9
Table 2-8. Connector Assignments , 37-Pi n2–10
Table 2-9. Data I/O Connector, 100-Pin2–11
Table 2-10. Remote Control Interface Connector Pinout Data (J10)2–14
Table 2-11. AC Power (J11 and J12)2–15
Table 2-12. DC Prime Power (J11 and J12)2–15
Table 2-13. Switch/Modem Communications Interface Connector (J13)2–16
Table 2-14. Status/Faults (J14) Pinout Assignments2–17
Table 3-1. Default Configuration Param eters3-2
Table 3-2. Keypad Functions3-6
Table 4-1. Remote Switch (RS-301) Connectors4-5
Table 4-2. Tributary 1 Data (J1)4-6
Table 4-3. Tributary 2 Data (J2)4-6
Table 4-4. Tributary 3 Data (J3)4-6
Table 4-5. Tributary 4 Data (J4)4-7
Table 4-6. Tributary 5 Data (J5)4-7
Table 4-7. Tributary 6 Data (J6)4-7
Table 4-8. Tributary 7 Data (J7)4-8
Table 4-9. Tributary 8 Data (J8)4-8
Table 4-10. AUX Data (J9)4-8
Table 4-11. Modem A Data (J14)4-9
Table 4-12. Modem B Data (J15)4-10
Table 4-13. Switch Control Interface (J16)4-11
Table 5-1. LED Functions5-3
Table 5-2. Fault Isolation, 1:1 Switch5-4
Table B-1. Standard Configuration CablingB–2
Table B-2. RS-301 Configuration CablingB–5
Table C-1. LVDS/DVB SpecificationsC–2
Table C-2. EIA-422/EIA-530 SpecificationsC–4
Table C-3. EIA-422/EIA-530 SpecificationsC–6
Table C-4. Cable Pin Assignments (CA/6217)C–7
Table C-5. Cable Pin Assignments (CA/6217)C–10
Table C-6. Pin Assignments, 25-PinC–12
Rev. 3vii
PrefaceSMS-301 Redundancy Switch
Overview of Changes to Previous Edition
This revision supersedes part number MN/SMS301.IOM Rev. 2, dated February 6, 1998
A summary of the changes made for Rev. 3 includes:
•
Various non-technical cosmetic changes (formatting, etc.).
•
Add new EMC directive.
•
Revised Table 1-1 Board List.
•
Revised Table 1-3 to include Control Box Extender Card Connector.
•
Revised paragraph 2.2 to relocatecabling instructions to appendices.
•
Paragraph 2.3, Rearranged section.
•
Added Standard Configuration to Figure 2-1.
•
Added Table 2-1 to reflect standard configuration and renumbered Table 2-2 as
RS-301 Connectors.
•
Reidentified paragrapgh 2.3.1 as RS-301 option.
•
Relocated different installtion options from Section 2 to appendices.
•
Updated menus to reflect version 1.1.6.
•
Deleted Sections 4.6 and 4.7. Data relocated to Chapter 2.
•
Revised Chapter 4, to rearrange data interfaces.
•
Revised Appendix A to reflect FW/6055-1E.
•
Added Appendix B to reflect SDM-300/-300A cabling.
•
Added Appendix C to reflect SDM-2020M cabling.
About this Manual
This manual provides installation and oper at ion info rmation for the Comtech EFData
SMS-301 redundancy switch. This is a technical document intended for earth station
engineers, technicians, and operators responsible for the operation and maintenance of
the SMS-301.
Conventions and References
Cautions and Warnings
CAUTION indicates a hazardous situation that, if not avoided, may result in
minor or moderate injury. CAUTION may also be used to indicate other
CAUTION
WARNING
unsafe practices or risks of property damage.
WARNING indicates a potentially hazardous situation that, if not avoided,
could result in death or serious injury.
viiiRev. 3
SMS-301 Redundancy SwitchPreface
Metric Conversion
Metric conversion information is located on the inside back cover of this manual. This
information is provided to assist the operator in cross-referencing English to Metric
conversions.
Recommended Standard Designations
Recommended Standard (RS) Designations have been superseded by the new designation
of the Electronic Industries Association (EIA). References to the old designations are
shown only when depicting actual text displayed on the screen of the unit (RS-232, RS485, etc.). All other references in the manual will be shown with the EIA designations
(EIA-232, EIA-485, etc.) only.
Trademarks
Other product names mentioned in this manual may be trademarks or registered
trademarks of their respective companies and are hereby acknowledged.
Reporting Comments or Suggestions Concerning this Manual
Comments and suggestions regarding the content and design of this manual will be
appreciated. To submit comments, please contact the Comtech EFData Customer Support
Department.
EMC Compliance
EN55022 Compliance
This equipment meets EN5022.
This is a Class A product. In a domestic environment, it may cause radio interference in
which the user may be required to take adequate measures.
Rev. 3ix
PrefaceSMS-301 Redundancy Switch
Federal Communications Commission (FCC)
This equipment has been tested and found to comply with the limits for a Class A digital
device, following Part 15 of the FCC rules. These limits are designed to provide
reasonable protection against harmful interference when the equipment is operated in a
commercial environment.
This equipment generates uses, and can radiate radio frequency energy and, if not
installed and used in accordance with the instruction manual, may cause harmful
interference to radio communication. Operation of this equipment in a residential area is
likely to cause harmful interference in which case the user will be required to correct the
interference at his own expense.
Note:
To ensure compliance, properly shielded cables for DATA I/O shall be used. More
specifically, these cables shall be doubled-shielded from end-to-end, ensuring a
continuous shield.
Low Voltage Directive (LVD)
The following information is applicable for the European Low Voltage Directive
(EN60950):
<HAR>Type of power cord required for use in the European Community.
CAUTION: Double-pole/Neutral Fusing.
!
International Symbols:
Note:
ACHTUNG: Zweipolige bzw. Neutralleiter-Sicherung.
Alternating Current.
Fuse.
Safety Ground.
Chassis Ground.
1. Applicable testing is routinely performed as a condition of manufacturing on all
units to ensure compliance with requirements of EN60950 for Safety.
xRev. 3
SMS-301 Redundancy SwitchPreface
Warranty Policy
This Comtech EFData product is warranted against defects in material and workmanship
for a period of one year from the date of shipment. During the warranty period, Comtech
EFData will, at its option, repair or replace products that prove to be defective.
For equipment under warranty, the customer is responsible for freight to Comtech
EFData and all related custom, taxes, tariffs, insurance, etc. Comtech EFData is
responsible for the freight charges
the customer. Comtech EFData will return the equipment by the same method (i.e., Air,
Express, Surface) as the equipment was sent to Comtech EFData.
only
for return of the equipment from the factory to
Limitations of Warranty
The foregoing warranty shall not apply to defects resulting from improper installation or
maintenance, abuse, unauthorized modification, or operation outside of environmental
specifications for the product, or, for damages that occur due to improper repack ag ing of
equipment for return to Comtech EFData.
No other warranty is expressed or implied. Comtech EFData specifically disclaims the
implied warranties of merchantability and fitness for particular purpose.
Exclusive Remedies
The remedies provided herein are the buyer's sole and exclusive remedies. Comtech
EFData shall not be liable for any direct, indirect, special, incidental, or consequential
damages, whether based on contract, tort, or any other legal theory.
Disclaimer
Comtech EFData has reviewed this manual thoroughly in order that it will be an easy-touse guide to your equipment. All statements, technical information, and
recommendations in this manual and in any guides or related documents are believed
reliable, but the accuracy and completeness thereof are not guaranteed or warranted, and
they are not intended to be, nor should they be understood to be, representations or
warranties concerning the products described. Further, Comtech EFData reserves the
right to make changes in the specifications of the products described in this manual at any
time without notice and without obligation to notify any person of such changes.
If you have any questions regarding your equipment or the information in this manual,
please contact the Comtech EFData Customer Support Department.
Rev. 3xi
PrefaceSMS-301 Redundancy Switch
This page is intentionally blank.
xiiRev. 3
Chapter 1.
INTRODUCTION
1
This manual describes the SMS-301 redundancy switch, referred to in this manual as the
“1:1 switch” (Figure 1-1).
Figure 1-1. SMS-301
Rev. 31–1
IntroductionSMS-301 Redundancy Switch
1.1 Description
1.1.1 Description (Standard Configuration)
The 1:1 switch is a fully automated protection switch for Comtech EFData satellite
modems, providing redundancy for one prime modem using one identical backup
modem. Common interfaces are provided for user data terminal equipment and
uplink/downlink RF equipment, as well as the primary and redundant (backup) modems.
The integrated uplink 1:1 switch and downlink splitter operate at IF frequencies in the
range of 50 to 180 MHz.
Full Monitor and Control (M&C) functions are supported by an integrated
microprocessor system. The M&C system is designated to maintain the 1:1 switch
configuration settings in non-volatile memory for at least one year without prime power.
Note:
While 1:1 switch prime power is not applied, the default connections are to
Modem A.
Remote control is provided by an EIA-485 or EIA-232 interface located on the rear panel
of the chassis. The rear panel also is the location for all external interconnections. The
1:1 switch is enclosed in a single unit, 19-inch (48.3 cm) rack-mounted chassis. Figure 1-2
illustrates the system block diagram.
TR ANS M IT IF
RECEIVE IF
BASEBAND DATA
TX/RX
SWITCH M&C LOGIC
REMOTE
CONTROL
TR ANS M IT IF
RECEIVE IF
BASEBAND DATA
TX/RX
J9J5J2
SPLITTER
J7J6J3
J1
J8
J4
J10
EIA-232 OR
EIA-485
BASEBAND DATA
TO/FROM CUSTOMER
RECEIVE IF
50 TO 180 MHz F R O M
DOWN CONVERTER
TR ANS M IT IF
50 TO 180 MHz
TO U P C O N VE R T E R
HOT TERMINAL
OR COMPUTER
J14
MODEM A
1 FOR 1 SWITCH
MODEM REMOTEJ13
EIA-485
STATUS/FAULTS
MODEM A
Figure 1-2. System Block Diagram (Standard Configuration)
1–2Rev. 3
SMS-301 Redundancy SwitchIntroduction
1.1.2 Description (With RS-301 Option)
The 1:1 switch, when used with the RS-301 Remote Switch, is a fully-automated
protection switch designed for use with the Comtech EFData SDM-300/-300A Satellite
Modem that are equipped with the 8-Channel MUX option. It provides redundancy for
the one prime modem using identical backup satellite modem. The 1:1 switch provides
common interfaces for the RF uplink and downlink equipment. The integrated uplink 1:1
switch and downlink splitter operate at IF frequencies in the range of 50 to 180 MHz.
The RS-301 Remote Switch is a separate 19-inch (48.3 cm) rack-mounted chassis. It is
controlled by the 1:1 switch, and provides redundancy for the data interface between the
primary modem, backup modem, and customer equipment. The front panel provides
convenient access to eight tributary data channels (EIA-232 and EIA-422 clock and data)
and one auxiliary data channel. Figure 1-3 illustrates the system block diagram.
Note:
The default connections are to Modem A.
SDM -300 / 300A
MODEM A
1 FOR 1 S W ITCH
J13
MODEM REMOTE
EIA-485
STATUS FAULTS
J14
SDM -300 / 300A
MODEM B
TRANSMIT IF
RE C EIV E IF
BASEBAND DATA
TX/RX
SWITCH
M&C
LOGIC
REMO TE
CONTRO L
J10J6
TRANSMIT IF
RE C EIV E IF
BASEBAND DATA
TX/RX
J5
J9
SPLITTER
CONTRO L
BUS
EXTENDER
CARD
J7
EIA-232 OR EIA-485
M O DEM A D ATA ( 8 T R IB & A UX )
NOTE: J7, J8, AND J9
AR E N O T US E D.
J8
J1
J4
HO ST T ER MIN AL
OR COMPUTER
M O DEM B D ATA ( 8 T R IB & 1 A U X)
SWITCH
CONTRO L
TRANSMIT IF
50 TO 180 M Hz TO
UP CON VERTER
J16
J14
J1 TR IB 1 DATA
J2 TR IB 2 DATA
J3 TR IB 3 DATA
J4 TR IB 4 DATA
J5 TR IB 5 DATA
J6 TR IB 6 DATA
J7 TR IB 7 DATA
J8 TR IB 8 DATA
J9 AUX DATA
RS-301
REMOTE
SWITCH
J15
Figure 1-3. System Block Diagram (With RS-301 Option)
Rev. 31–3
IntroductionSMS-301 Redundancy Switch
1.1.3 Board List
The following boards, listed in Table 1-1, can be installed in the SMS-301, depending on
the configuration.
Table 1-1. Board List
Board TypeDrawing #
M&C, 75
M&C, 50
IBS, IDR, ASYNC, D&I,
50-pin Data, I/O (J1, J2, J3)
EIA-422/-449, G.703, V.35,
37-pin Data I/O (J1, J2, J3)
LVDS-DVB TX, 37-pin Inter facePL/6201-1
EIA-422/DVB TX, 37-pin Interf a c ePL/6201-2
EIA-232/-422/-530, V.35, G.703
25-pin Data, I/O (J1, J2, J3)
100-Pin Interface (RS-301 only)PL/6592
Ω
Ω
PL/5950-1
PL/5950-2
PL/5951
PL/5952
PL/6026
PL/6627
1–4Rev. 3
SMS-301 Redundancy SwitchIntroduction
1.2 Front Panel
The front panel of the chassis is a local user interface used for control and status
monitoring of the switching system. This local user interface consists of the following:
•
Keypad
•
Backlit LED display
•
LED status indicators (Table 1-2)
Table 1-2. LED Status Indictors
FunctionColor
Demodulator A O n-LineGreen
Demodulator B On-LineGree n
Modulator A On-LineGreen
Modulator B On-LineGreen
Transmit FaultRed
Receive FaultRed
System FaultRed
Stored FaultYellow
Power Supply 1Green
Power Supply 2Green
Auto ModeGreen
Manual ModeYellow
Rev. 31–5
IntroductionSMS-301 Redundancy Switch
1.3 Specifications
Refer to Table 1-3 for the 1:1 switch specifications.
Table 1-3. 1:1 Switch Specifications
Data Interface Switch:
Modem A, I/O
Modem B, I/O
Common, I/O
Control Bus Extender CardConnector T ype: 37-pin D-sub (Remote Switch)
IF Uplink Switch:Connector type: BNC
IF Downlink Splitter:Connector type: BNC
Local User InterfaceFront Panel:
Front Panel Status LEDsOper a tiona l mode:
Connector type: 25-pin D-sub,
37-pin D-sub
50-pin D-sub
100-pin D-sub
Impedance: 75Ω (50Ω optional)
Return loss: ≥ 18 dB
Switched input to output loss: < 1.5 dB
Frequency re spons e : 50 to 180 MHz
IF input to input isolation: > 60 dB
Impedance: 75Ω (50Ω optional)
Return loss: ≥ 18 dB
Splitter loss, input to outputs: < 4.0 dB
Output balance: ± 0.5 dB
Frequency re spons e : 50 to 180 MHz
Keypad: 6 button (enter, c le a r, le ft, right, up, down arrows)
•
Display: backlit LC D, 2 lines by 16 characters
•
Manual (Yellow)
•
Automatic (Gree n)
•
Switch faults:
TX (Red)
•
RX (Red)
•
System (Red)
•
Stored (Yellow)
•
On-line Status:
Modulator A (Gre e n)
•
Modulator B (Green)
•
Demodulator A ( Green)
•
Demodulator B (Green)
•
On-line/Fault Status
Modulator On-line
Demodulator On-line
Switch Fault
Controller Fault
Spare
Remote ControlInterface type: EIA-485/EI A-232 (local selec ta ble)
1–6Rev. 3
Rear panel, 15-pin D-sub female
Form C relay
Form C relay
Form C relay
Form C relay
Form C relay
Connector:9-pin D-sub
Protocol: Addressable (s ee r e mote control protocol)
SMS-301 Redundancy SwitchIntroduction
Table 1-3. 1:1 Switch Specifications (Continued)
Parameters
Controlled/Monitored
Configuration RetentionWill maintain conf ig uration for at least one y ea r w ithout prime power
Switch to Modem
Communications
Prime Power85 to 264 VAC, 47 to 63 Hz, 30W (re dunda nt inputs )
Size19 W x 15.2 D x 1.75 H inches ( 1 RU )
Weight< 9 lbs (4 kg)
Operating Temperature
Humidity< 95%, non-condensing
EMICE Mark Certification
Operation mode: Automatic or manual
Switching mode : Independent or dependent mod/demod
Modulator on-line delay
Demodulator on-line de la y
Modem on-line: A or B (dependent m ode )
Modulator on-line: A or B (independent mode)
Demodulator on-line : A or B (independent mode)
Remote config ur a tion (loc a l only): EIA-232 or EIA -485, a ddr e ss , ba ud,
parity, bits per word
Remote mode (Sw itc h)
Clear stored faults
Current faults
Stored faults
Switch status
Firmware
Time/date
Equipment type
Store/recall multiple switc h c onfigurations
Remote access to modulator/demodulator s ta t us
Modem configur a tion c opy to opposite modem
Interface type: EIA -485 ( 2-wire)
Connector:9-pin D-sub
Protocol: Addressable (s e e r e mote control protocol, Appe ndix A)
(Optional)
(48.3 x 39 x 4.4 cm)
0° to 50° C (32° to 122° F)
42 to 56 VDC, 40W (redundant inputs)
Rev. 31–7
IntroductionSMS-301 Redundancy Switch
This page is intentionally left blank.
1–8Rev. 3
This chapter provides installation information for the 1:1 switch, including unpacking,
inspecting the parts, and external connections.
2.1 Unpacking
The 1:1 switch and manual are packaged in pre-formed, reusable cardboard cartons
containing foam spacing for maximum shipping protection. To remove the 1:1 switch,
proceed as follows:
Do not use any cutting tool that will extend greater than 1-inch into the
container and cause damage to the 1:1 switch.
CAUTION
1. Cut the tape at the top of the carton where it is indicated OPEN THIS END.
Chapter 2.
INSTALLATION
2
2. Lift out the cardboard/foam spacer covering the 1:1 switch.
3. Remove the 1:1 switch, manual, and power cords from the carton.
4. Save the packing material for reshipment either back to the factory or to another
location.
5. Inspect the equipment for any possible damage incurred during shipment.
6. Check the equipment against the packing list to ensure that the shipment is
complete.
7. Refer to Section 2.2 for further system installation instructions.
Rev. 32–1
InstallationSMS-301 Redundancy Switch
2.2 System Installation
System installation instructions are dependent on whether or not the 1:1 switch is used
with the RS-301 Remote Switch option.
•
For all switch configurations where the Data I/O is switched internally to the
1:1 switch, refer to Appendix B for standard configuration installation. This
configuration is used with the SDM-300/-300A Satellite Modems with 25-pin,
34-pin, 37-pin, and 50-pin Data I/O interfaces.
•
When the RS-301 Remote Switch option is used and the Data I/O is s witched in
a separate unit, refer to Appendix B for installation with RS –301 switch
installed. This configuration is used with the SDM-300/-300A Satellite Modem
with a
100-pin Data I/O (8-channel Mux).
Note:
Refer to Appendix C for SDM-2020 cabling instructions to the switch.
2–2 Rev. 3
SMS-301 Redundancy SwitchInstallation
2.3 External Connections
Connections between the 1:1 switch and other equipment are performed through the rear
panel connectors. These connectors vary depending on whether the Remote Switch (RS-
301) is used.
•
Refer to Table 2-1 for the connector list when the Data I/O is switched internal
to the 1:1 switch.
•
When the 1:1 switch is used with the Remote Switch (RS-301) option, refer to
Table 2-2.
DATA CO MJ150/37/25-pin DCom mon Data Interfa c e
DATA AJ250/37/25-pin DMode m A Data Inte rface
DATA BJ350/37/25-pin DModem B Data Inte rface
TX IF COMJ4BNCCommon TX IF Output
TX IF AJ5BNCModem A TX IF Input
TX IF BJ6BNCModem B TX IF Input
RX IF BJ7BNCModem B RX IF Output
RX IF COMJ8BNCComm on R X IF Input
RX IF AJ9BNCModem A RX IF Output
REMOTE CONTR OLJ109-pin DRemote Comma nd I nte rface
AC POWERJ11/J12IECAC Power I nput
SW/MODEM COMMJ139-pin DModem A/B Remote
STATUS/FA U L TSJ1415-pin DSwitch Status (Form C relay)
GNDGND#10-32 studGround
REMOTE SWITCH
CONTROL
TX IF COMJ4BNCCommon TX IF Output
TX IF AJ5BNCModem A TX IF Input
TX IF BJ6BNCModem B TX IF Input
RX IF BJ7BNCModem B RX IF Output
RX IF COMJ8BNCComm on R X IF Input
RX IF AJ9BNCModem A RX IF Output
REMOTE CONTR OLJ109-pin DRemote Comma nd I nte rface
AC POWERJ11/J12IECAC Power I nput
DC POWER
SW/MODEM COMMJ139-pin DModem A/B Remote
STATUS/FA U L TSJ1415-pin DSwitch Status (form C relay )
GNDGND#10-32 studGround
Note:
(Optional)
The use of each connector is described in the following paragraphs.
J137-pin DRS-301 Control Signa ls , Pow e r,
and Ground
J11/J12Terminal B loc kDC Power Input
2–4 Rev. 3
SMS-301 Redundancy SwitchInstallation
2.3.1 Remote Switch Control (J1) (RS-301 Option)
For applications using the Remote Switch (RS-301) option, the connector type is a
37-pin D subminiature. Refer to Table 2-3 for the 37-pin connector pin assignments.
Table 2-3. Switch Control Interface Signals
Pin No.NameFunction
1SCLSerial Clock
20SDASerial Data
2Spare 11No Connection
21Spare 10No Connection
3Spare 9No Connection
22Spare 8No Connection
4Spare 7No Connection
23Spare 6No Connection
5Spare 5No Connection
24Spare 4No Connection
6Spare 3No Connection
25Spare 2No Connection
7Spare 1No Connection
26DMDONLDemod Online
8MODONLMod Online
27/B_DFModem B D e mod Fault
9/A_DFModem A Demod Fault
28/B_MFModem B Mod Fault
10/A_MFModem A Mod Fault
29ID_5Interface Board ID
11ID_4Interface Board ID
30ID_3Interface Board ID
12ID_2Interface Board ID
31ID_1Interface Board ID
13GNDGround
32GNDGround
14GNDGround
33GNDGround
15GNDGround
34-12V-12VDC
16-12V-12VDC
35+12V+12VDC
17+12V+12VDC
36+5V+ 5VD C
18+5V+ 5VD C
37+5V+ 5VD C
19+5V+ 5VD C
Rev. 32–5
InstallationSMS-301 Redundancy Switch
2.3.2 Data I/O Connections
The 1:1 switch data interface is dependent upon the installed switchboard. These are
described in the following sections.
2.3.2.1 Data I/O Connector (J1, J2, J3), 50-Pin (PL/5951)
Note:
For ASYNC, IBS, IDR, and D&I applications.
In order to maintain comp atibility with various Comtech EFData break out panels, the 50pin D subminiature connector has the assignments shown in Table 2-4, depending upon the
current operating mode.
Table 2-4. Data I/O Connector, 50-Pin
50-Pin D Connector
Pin #IDRIBSAsyncD&I
34G.703 SDA InG.703 SDA InG.703 SDA InG.703 SDA In
18G.703 SDB I nG.703 SDB I nG.703 SDB InG.703 SDB In
36G.703 RDA OutG.703 RDA OutG.703 RDA OutG.703 RDA Out
20G.703 RDB OutG .703 RD B O utG.703 RDB OutG.703 RDB Out
35EIA- 422 Ex tClkA InV.35/EIA-422 EXCA InV.35/EIA- 422 E X CA InEIA-422 EXCA In
19EIA-422 E x tClkB InV.35/EIA-422 EXCB InV.35/EIA-422 EX CB InEIA- 422 EX CB In
37EIA- 422 8k TXDA InV.35/EIA - 422 S D - A InV.35/EIA-422 S D - A InG.703 DDO-A Out
38EIA- 422 8k TXDB InV.35/EIA-422 SD-B InV.35/EIA-422 SD-B InG.703 DDO-B Out
21EIA- 422 8k TClkA OutV.35/EIA - 422 S T-A OutV.35/EIA-422 ST- A Out
22EIA- 422 8k T C l kB O utV.35/EIA-422 S T-B OutV.35/EI A-422 ST-B O ut
4EI A-422 TXOctA InESC TXDB In (EIA-485 only)
5EI A-422 TXOctB InESC TXDA I n ( E IA-232 onl y)ESC TXD A In (EIA-485 & 232)ESC TX D In (EI A-232 only )
39EIA- 422 8k RX D A OutV.35/EI A-422 RD-A O utV.35/EIA-422 RD-A O utG.703 I D I-A In
40EIA-422 8k RXDB OutV.35/EIA-422 RD-B OutV.35/EI A-422 RD-B OutG.703 IDI-B In
23EIA-422 8k RClkA OutV.35/EIA-422 RT - A OutV.35/EI A-422 RT-A O utG.703 IDI-B I n
24EIA-422 8k RClkB OutV.35/EIA - 422 RT-B OutV.35/EIA - 422 RT-B Out
6EI A-422 RXOctA O utESC RXDB Out (EIA-485 onl y)
7EI A-422 RXOctB OutESC RXDA Out (EIA-232 only )ESC RXDA Out (EI A-485 & 232)ESC RXD Out (EIA - 232)
45Aud1-A In (or 64SDA)V.35/EIA - 422 RTS-AV.35/EIA - 422 RTS-A
29Aud1-B In ( o r 64S D B)V.35/EIA - 422 RTS-BV.35/EIA-422 RTS- B
44BWO4_NOSECONDARY_NOSECONDARY_NO
12BWAI 1V.35/EIA - 422 S CTE/TT AV.35/EIA-422 SCTE/T T A
13BWAI 2V.35/EIA - 422 S CTE/TT BV.35/EIA-422 SCTE/T T B
14BWAI 3EIA-422 TX Oct A
15BWAI 4EIA-422 TX Oct B
17Def Maint Alr m
16Demod Fault C
50Demod Fault NO
3AGC OutAGC OutAGC OutAGC Out
49MF (Open Col lector)MF (Ope n Collector )MF ( O pen Collecto r )MF (Open Collector)
33DF (Open Co l lector)DF (Open Collecto r )DF (Open Co l lector)DF (Open Collector)
1, 2Ground
2–6 Rev. 3
SMS-301 Redundancy SwitchInstallation
2.3.2.2 Data I/O Connector (J1, J2, J3), 37-Pin (PL/5952)
Note:
For EIA-422/-449, V.35, and G.703 applications.
The 37-pin D subminiature connector pin assignments are shown in Table 2-5.