Comtech EF Data SDM-300L User Manual

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SDM-300L

Satellite Modem

erator’s Guide

Part Number MN/SDM300L.OG Revision 2

SDM-300L

Satellite Modem

Comtech EFData is an ISO 9001

Registered Company.

Operator’s Guide

Part Number MN/SDM300L.OG

Revision 2

November 6, 2000

Comtech EFData, 2114 West 7th Street, Tempe, Arizona 85281 USA, (480) 333-2200, FAX: (480) 333-2161.

Customer Support

Contact the Comtech EFData Customer Support Department for:

• Product support or training

• Information on upgrading or returning a product

• Reporting comments or suggestions concerning manuals

A Customer Support representative may be reached at:

Comtech EFData Attention: Customer Support Department 2114 West 7th Street Tempe, Arizona 85281 USA

480.333.2200 (Main Comtech EFData Number)

480.333.4357 (Customer Support Desk)

480.333.2161 FAX

or, E-Mail can be sent to the Customer Support Department at:

service@comtechefdata.com

1. To return a Comtech EFData product (in-warranty and out-of-warranty) for repair or replacement:

2. Request a Return Material Authorization (RMA) number from the Comtech EFData Customer Support Department.

3. Be prepared to supply the Customer Support representative with the model number, serial number, and a description of the problem.

4. To ensure that the product is not damaged during shipping, pack the product in its original shipping carton/ packaging.

5. Ship the product back to Comtech EFData. (Shipping charges should be prepaid.)

For more information regarding the warranty policies, see Warranty Policy, p. ix.

ii Rev. 2

CHAPTER 1. INTRODUCTION..................................................................................1–1

1.1

1.2

1.3

1.4

Overview..................................................................................................................................................... 1–3

1.1.1 Available Options.................................................................................................................................... 1–3

1.1.2 Monitoring Features ................................................................................................................................1–3

1.1.3 Compatibility........................................................................................................................................... 1–4

Application Notes....................................................................................................................................... 1–4

Specifications.............................................................................................................................................. 1–5

Dimensional Envelope ............................................................................................................................... 1–9

CHAPTER 2. INSTALLATION ...................................................................................2–1

2.1

2.2

2.3

Unpacking................................................................................................................................................... 2–1

Installation.................................................................................................................................................. 2–2

External Modem Connections................................................................................................................... 2–4

2.3.1 Remote Connector and Pinouts (J6)........................................................................................................ 2–6

2.3.2 Fault Connector and Pinouts (J7)............................................................................................................ 2–7

2.3.3 Data I/O Interface Connector (J8)........................................................................................................... 2–8

2.3.4 Auxiliary 1 Connector and Pinouts (J9)................................................................................................ 2–17

2.3.5 Alarms Connector and Pinouts (J10)..................................................................................................... 2–18

2.3.6 RF Output Connector (CP1).................................................................................................................. 2–18

2.3.7 External Reference (CP2)...................................................................................................................... 2–18

2.3.8 RF Input Connector (CP3).....................................................................................................................2–19

2.3.9 AC Power Connector............................................................................................................................. 2–19

2.3.10 Ground Connector (GND)..................................................................................................................... 2–19

Rev. 2 iii

Preface SDM-300L Satellite Modem

CHAPTER 3. OPERATION........................................................................................3–1

3.1

3.2

3.3

3.4

APPENDIX A

A.1 FAST Accessible Options......................................................................................................................... A–1

A.2 Options....................................................................................................................................................... A–6

Front Panel................................................................................................................................................. 3–1

3.1.1 LED Indicators........................................................................................................................................ 3–2

3.1.2 Front Panel Keypad................................................................................................................................. 3–2

Menu System.............................................................................................................................................. 3–4

3.2.1 Code Rate and Data Rate Range..............................................................................................................3–5

3.2.2 Front Panel Menu.................................................................................................................................... 3–6

SDM-300L Custom Modem Defaults ..................................................................................................... 3–29

Custom Operation....................................................................................................................................3–32

OPTIONS........................................................................................... A–1

A.1.1 A.1.2

FAST System Theory......................................................................................................................... A–2

Implementation .................................................................................................................................. A–3

iv Rev. 2

SDM-300L Satellite Modem Preface

Figures

Figure 1-1. SDM-300L............................................................................................................................................ 1–1

Figure 1-2. Block Diagram...................................................................................................................................... 1–2

Figure 1-3. Dimensional Envelope Drawing............................................................................................................1–9

Figure 2-1. Installation of the Optional Mounting Bracket KT/6228-1................................................................... 2–3

Figure 2-2. Basic Modem, 25-Pin D Connector....................................................................................................... 2–5

Figure 2-3. (V.35) 34-Pin Winchester Connector.................................................................................................... 2–5

Figure 2-4. EIA-422/449, 37-Pin D Connector........................................................................................................ 2–5

Figure 2-5. Overhead Option, 50-Pin D Connector...................................................................................................2–5

Figure 2-6. Data I/O Connector (J8) Removal/Installation.................................................................................... 2–16

Figure 3-1. Front Panel View................................................................................................................................... 3–1

Figure 3-2. Keypad .................................................................................................................................................. 3–2

Figure 3-3. Main Menu............................................................................................................................................ 3–6

Figure 3-4. Configuration Modulator Menu ............................................................................................................ 3–7

Figure 3-5. Configuration Demodulator Menu........................................................................................................3–8

Figure 3-6. Configuration Interface Menu............................................................................................................... 3–9

Figure 3-7. Configuration Local AUPC Menu.......................................................................................................3–11

Figure 3-8. Configuration MUX............................................................................................................................ 3–12

Figure 3-9. Configuration Flex Mux...................................................................................................................... 3–13

Figure 3-10. Configuration Save Menu..................................................................................................................3–15

Figure 3-11. Configuration Recall Menu............................................................................................................... 3–15

Figure 3-12. Monitor Menu ................................................................................................................................... 3–16

Figure 3-13. Faults/Alarms Menu.......................................................................................................................... 3–17

Figure 3-14. Stored Faults/Alarms Menu...............................................................................................................3–18

Figure 3-15. Remote AUPC Configuration Menu.................................................................................................3–19

Figure 3-16. Remote AUPC Monitor Menu...........................................................................................................3–19

Figure 3-17. Utility Modulator Menu.................................................................................................................... 3–20

Figure 3-18. Utility Demodulator Menu................................................................................................................ 3–21

Figure 3-19. Utility Interface Menu....................................................................................................................... 3–22

Figure 3-20. Utility System Menu ......................................................................................................................... 3–24

Figure 3-21. Utility Modem Type Menu................................................................................................................3–26

Figure 3-22. Utility Factory Setup Menu............................................................................................................... 3–28

Tables

Table 1-1. SDM-300L Versions...............................................................................................................................1–2

Table 1-2. Application Notes................................................................................................................................... 1–4

Table 1-3. General Specifications............................................................................................................................ 1–5

Table 2-1. Modem Rear Panel Connectors.............................................................................................................. 2–4

Table 2-2. Remote Connector and Pinouts (J6) .......................................................................................................2–6

Table 2-3. Fault Connector and Pinouts (J7)............................................................................................................2–7

Table 2-4. 25-Pin D Connector Pinouts................................................................................................................... 2–9

Table 2-5. 34-Pin Winchester Connector Pinouts (V.35) ...................................................................................... 2–10

Table 2-6. 37-Pin Connector Pinouts (Optional)....................................................................................................2–11

Table 2-7. 50-Pin Connector Pinouts.....................................................................................................................2–12

Table 2-8. AUX 1 Connector and Pinouts (J9)...................................................................................................... 2–17

Table 2-9. Alarms Connector and Pinouts (J10).................................................................................................... 2–18

Table 3-1. LED Indicators ....................................................................................................................................... 3–2

Table 3-2. SDM-300L Custom Modem Defaults................................................................................................... 3–29

Table A-1. FAST Options and Required Configurations........................................................................................ A–2

Rev. 2 v

Preface SDM-300L Satellite Modem

Overview of Changes to Previous Edition

Chapter 3. Updated Menus to incorporate Firmware Version 2.1.2.

About this Manual

This manual provides installation and operation information for the Comtech EFData SDM-300L satellite modem. This is a technical document intended for earth station engineers, technicians, and operators responsible for the operation and maintenance of the SDM-300L.

European Low Voltage Directive

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:

For additional symbols, refer to “Cautions and Warn ing s” lis ted ea rl ier in t his

preface.

ACHTUNG: Zweipolige bzw. Neutralleiter-Sicherung

Alternating Current.

Fuse. Safety Ground.

Chassis Ground.

viii Rev. 2

SDM-300L Satellite Modem Preface

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 repackaging 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. 2 ix

Preface SDM-300L Satellite Modem

This page is intentionally blank.

x Rev. 2

Chapter 1.

INTRODUCTION

This chapter provides an overview of the SDM-300L satellite modem, referred to in this manual as “the modem” (Figure 1-1).

Note:

An SDM-300L Technical Information Guide is available in electronic format on the CD included with the unit. It contains detailed information that is beyond the scope of this Operator’s Guide.

Figure 1-1. SDM-300L

The SDM-300L Digital Satellite Modem is a high performance, full duplex modem. The unit is available in two versions as described in Table 1-1.

Rev. 2 1–1

Introduction SDM-300L Satellite Modem

Table 1-1. SDM-300L Versions

Type Transmit (TX) Receive (RX)

SDM-300L-1 70/140 MHz L-Band SDM-300L-2 L-Band L-Band

Refer to Figure 1-2 for a system block diagram.

Notes:

1. The UB-530 universal breakout panel (BOP) is an option for V.35, G703, EIA-232, and EIA-422.

2. When the modem is equipped with a 50-pin data I/O connector, the use of the BOP is required to interface the customer data connector to the modem.

3. Contact Comtech EFData for information concerning universal breakout panels.

(Optional)

Breakout Panel

UB-530

User Data

AUX 1

OC-TTL

Faults

Form C

Contacts

Remote

Port

AC Or

Optional

DC Prime Power

J10

Power

Supply

AUX 1

Fault Relays Alarm Relays Remote Port

AC Only

Opt ODU

Data

Interface

AUX 1

M&C

Opt ODU

Supply

Tx Data Tx Clock ST Clock

Rx Data

Rx Clock

I/Q

Sat Clock

AGC

Control / Status

Encoder /

Modulator

Demodulator

/ Decoder

Ref Osc

Ext Ref

Tx IF Note 1

Rx IF Note 2

SDM-300L Satellite Modem

Figure 1-2. Block Diagram

CP2

CP1

CP3

Notes:

1) Tx IF (L-Band only) Outputs a 10 MHz

2) Rx IF Outputs LNB Volta ge and 10 MHz

Transmit

RF Equipment

LNB

Reference and Optional ODU Voltage. Reference.

1–2 Rev. 2

SDM-300L Satellite Modem Introduction

1.1 Overview

The SDM-300L utilizes advanced technology and digital signal processing techniques. This design eliminates circuitry to perform modem signal processing, resulting in higher reliability. The following lists the unit's features:

• 2.4 kbit/s to 4.375 Mbit/s Fully Accessible System Topology (FAST)

•

Closed Network Capability

•

Automatic Uplink Power Control (AUPC)

•

Asynchronous (ASYNC) Channel Unit Overhead

•

Reed-Solomon

•

FAST Acquisition

•

• Built-In Test (With L-Band TX and RX only)

OQPSK

•

1.1.1 Available Options

FAST is Comtech EFData’s exclusive feature that eliminates the need to acquire options before they are required. The following list reflects the options available via FAST implementation.

Variable Data Rate

•

Viterbi or Sequential

•

Decoder OQPSK

•

Asymmetrical Loop Timing

•

When additional features are required, they are added on site, using FAST access codes (Appendix A). For addition information, contact the Comtech EFData Customer Support department.

1.1.2 Monitoring Features

The unit's monitoring features include:

Interface Loopback – at the MOD and DEMOD interface (Bi-directional)

•

Baseband Loopback – at the data interface (Bi-directional)

•

BER, E

•

IF Loopback (Not available with 70/140 MHz TX IF)

•

, Buffer Fill Percentage

b/N0

G.703 Interface

•

Concatenated Reed-Solomon Codec

•

ASYNC/AUPC Overhead with 50-pin D connector

•

Rev. 2 1–3

Introduction SDM-300L Satellite Modem

1.1.3 Compatibility

The SDM-300L is functionally compatible with many Comtech EFData modems. When properly configured, the unit will interoperate with the following Comtech EFData modems:

SDM-100

•

SDM-100A

•

SDM-300

•

SDM-300A

•

SDM-650B

•

SDM-6000

•

SDM-8000

•

1.2 Application Notes

Refer to Table 1-2 for Application Notes that are applicable to the SDM-300L.

Table 1-2. Application Notes

Application Note P/N Date Title

APN/FAST 21 April 1999 Fully Accessible System Topology “FAST” APN/ReedSol 21 April 1999 Reed-Solomon Concatenated Codes

1–4 Rev. 2

SDM-300L Satellite Modem Introduction

1.3 Specifications

Refer to Table 1-3 for general specifications.

Table 1-3. General Specifications

Specification (Fully Enhanced)

Digital Interface (Standard) EIA-232, EIA-422, and V.35 (25-pin D) Digital Data Rate 2.4 kbit/s to 4.375 Mbit/s, in 1 bit steps

Note:

In some applications the practic al lower data rate is typically 19.2 k bit/s or hig he r., de pe nding upon the pe rformance of equipment used in c onjunc tion with the SDM-300L. These a pplic a tions inc lude the us e of a BUC or a LNB.

Symbol Rate 4.8 ksym/s to 2.5 Ms ym/s Modulation/Demodulation BPSK 1/2 Rate

QPSK 1/2, 3/4, and 7/8 rate OQPSK 1/2, 3/4, and 7/8 rate

Plesiochronous Buffer 2 to 99 msec, in 2 ms e c s te ps to 2.6 Mbit/s

32 to 262122 bit/s in 16 bit steps

Forward Error Correction ( FEC) Viterbi, K =7, 1/2, 3/4, and 7/8 rate

Sequential 1/2, 3/4, and 7/8 rate Reed-Solomon

Data Scrambling IESS-308 (V.35) or None External Refe r enc e I nput EXT 1, EXT 5, EXT 10, and EXT 20 MH z External Reference Output Level (Sourcing)

10 MHz, 0 to +10 dBm

Rev. 2 1–5

Introduction SDM-300L Satellite Modem

Table 1-3. General Specifications (Continued)

Modulation Specification

Parameter 70/140 MHz L-Band Option

Output Frequency 50 to 90 and 100 to 180 MHz

in 1 Hz steps

Output Power +5 to –20 dBm in 0.1 dB steps 0 to –30 dBm in 0.5 dB steps,

Output Stability Output Spurious in 4 kHz Band

(measured w ith modulated carrier )

Output Phase Noise < -66 dBc /H z a t 100H z

Output Impedance, R etur n L os s Output Spectrum IESS-308/-309, EFD Closed IESS-308/-309, EFD Closed Data Clock Source Internal or External Internal or External Internal Stability Output Connector BNC, Female Type N, Female Outdoor Referenc e (c e nte r conduc tor of

IF Output connector)

Outdoor Unit (ODU) DC Voltage

(From IF output connector )

Input Frequency 950 to 1750 MHz in 100 Hz steps Minimum Input Power (De s ire d Carrier) AGC Range 50 dB above minim um input level Composite to Desired Carrier

Maximum Composite Leve l –5 dBm Input Impedance, R e turn Loss Input Connector Type N, Female Carrier Acquis ition Ra ng e Acquisition Tim e <1 second at 64 kbit/s 1/2 rate Sweep Reacquis ition 0 to 999 seconds, in 1 second ste ps Buffer Clock Internal, External, Transmit, Recovered RX LNB Voltage On or Off

LNB Refer e nc e (C e nte r C onduc tor or IF Input Connector)

0.5 dB

< -50 dBc, 20 to 500 MHz > 64 kbit/s < -45 dBc, 20 to 500MHz ≤ 64 kbit/s

< -76 dBc/Hz at 1 k H z < -86 dBc/Hz at 10 k H z < -96 dBc/Hz at 100 k H z < -96 dBc/Hz at 1 MHz

75Ω ≥ 20 dB 50Ω ≥ 15 dB

10 ppm

Not Applicable On or Off

Not Applicable On or Off (with optional ODU

Demodulation Specification

+10 log (sym bol r a te ) – 135 dB m

+40 dBc, ≥ 64 ksym/s +50 dBc, < 64 ksy m/s

75Ω ≥ 10 dB

75 kHz in 1 Hz steps

+13 and +18 VDC per Di SEqC 4.2 a nd + 24VD C a t 500 mA maximum On or Off 10 MHz ± 0.02 ppm at – 6 to +0 dBm

950 to 1750 MHz in 100 Hz steps

with ± 2.5 dB accuracy

0.5 dB

< –50 dBc, 55 to 2000 MHz

< -63 dBc/Hz at 100 H z < -73 dBc/Hz at 1 k H z < -83 dBc/Hz at 10 MHz < -93 dBc/Hz at 100 k H z

0.02 ppm

10 MHz ± 0.02 ppm at 0 ± 3 dBm

voltage)

1–6 Rev. 2

SDM-300L Satellite Modem Introduction

Table 1-3. General Specifications (Continued)

Environmental Specifications

Prime Power 90 to 264 VAC, 47 to 63 Hz Dimensions 1.75 H x 19 W x 19.18 D inche s ( 1 RU )

(4.44 H x 48.26 W x 48.72 D cm) Weight 12 lbs (5 kg) maximum Operating Temperature Humidity Up to 95% non-condensing

Remote Control Specification

Serial Interface EIA-232 or EIA-485 (2-/4-wire)

Signals Controlled or Monitored Terminal Fre que nc y

Configuration Retention Will maintain current configuration for at least

0 to 50°C (32 to 122°F)

Transmit Power

Data Rate Select

RF Loopback (L - Ba nd)

Scrambler (On/Off)

Receive Carrier Detect

Power Supply Voltage s

Plesiochronous Buffe r

Field Upgradability

1 year without power.

Receive Frequency Transmitter On/Off Data Loopbacks IF Loopback (L - Ba nd) Raw Error Rate Receive Signal Level Fault Status Error Threshold Alarm

Rev. 2 1–7

Introduction SDM-300L Satellite Modem

Table 1-3. General Specifications (Continued)

BER and Eb/No Performance

Sequential Decoder

BPSK (1/2 Only) QPSK and OQPSK

Data Rate:

100 kbit/s

Data Rate:

1.544 Mbit/s

BER

-5

-6

-7

-8

BER

-6

-7

-8

BER

10 10

BER

10 10

-5

-7

-5

-7

1/2

4.5 dB

5.4 dB

1/2

5.6 dB

6.3 dB

Viterbi Decoder

BPSK (1/2 Only) QPSK and OQPSK

1/2

5.3 dB

6.0 dB

6.6 dB

7.2 dB

3/4

6.4 dB

7.2 dB

7.9 dB

8.5 dB

Concatenated Reed-Solomon Codes

BPSK (1/2 Only) QPSK and OQPSK

1/2

4.1 dB

4.2 dB

4.4 dB

3/4

5.6 dB

5.8 dB

6.0 dB

3/4

5.5 dB

6.4 dB

3/4

6.1 dB

7.0 dB

7/8

6.6 dB

7.8 dB

7/8

6.9 dB

7/8

7.9 dB

7.6 dB

8.3 dB

8.9 dB

9.6 dB

7/8

6.7 dB

6.9 dB

7.1 dB

1–8 Rev. 2

SDM-300L Satellite Modem Introduction

1.4 Dimensional Envelope

Refer to Figure 1-3 for the unit’s dimensional envelope drawing.

Note:

Dimensions are listed in inches and centimeters are in parentheses.

19.0

(48.26)

1.75 (4.4)

19.18 (48.72)

17.0

(43.18)

1.25 (3.2)

Figure 1-3. Dimensional Envelope Drawing

Rev. 2 1–9

Introduction SDM-300L Satellite Modem

This page is intentionally left blank.

1–10 Rev. 2

This chapter describes the installation and external connections for the SDM-300L unit.

2.1 Unpacking

The modem and manual are packaged in pre-formed, reusable, cardboard cartons containing foam spacing for maximum shipping protection.

Do not use any cutting tool that will extend more than 1 inch into the container and cause damage to the modem.

CAUTION

Unpack the modem:

1. Cut the tape at the top of the carton indicated by OPEN THIS END.

2. Remove the cardboard/foam space covering the modem and caddypacks.

3. Remove the modem, caddypacks, manual, and power cord from the carton.

4. Save the packing material for storage or reshipment purposes.

5. Inspect the equipment for any possible damage incurred during shipment.

6. Check the equipment against the packing list to ensure the shipment is correct.

7. Refer to Section 2.2 for installation instructions.

Chapter 2.

INSTALLATION

Rev. 2 2–1

Installation SDM-300L Satellite Modem

2.2 Installation

The modem arrives fully assembled from the factory. After unpacking the modem, install the modem as follows:

2.2.1 IDU Installation (Optional)

Refer to Figure 2-1. Use mounting kit KT/6228-1.

Optional: Mounting Kit , KT/6228-1 (IDU to Equipment Rack)

QTY Part Number Description

2 FP/6138-1 Bracket, Rear Support 4 HW/10-32x1/2RK Bolt, #10 Rack 2 HW/10-32X1/4 SHC Screw, Socket 10-32 x 1/4inch

Tools Required:

Screw Driver 5/32-inch

1. Install the IDU rear support brackets as follows:

a. Install provided rear support bracket onto the mounting rail of the rack.

Fasten with provided bracket bolts.

b. Fasten the provided #10 socket head screws to the rear-side mounting holes

on either side of the chassis modem. Mount the modem into the equipment rack ensuring that the socket heads engage into the slots of the rear support brackets.

Note:

the rack.

Phillips SAE Allen Wrench

It may be necessary to adjust the location of the rear mounting rails of

2–2 Rev. 2

SDM-300L Satellite Modem Installation

Equipment

Rack

Mounting

Rail

#10 Socket head

screw

BRACKET

BOLTS

Support

Bracket

* Note: Components of mounting kit KT/6228-1

IDU

Figure 2-1. Installation of the Optional Mounting Bracket KT/6228-1

Rev. 2 2–3

Installation SDM-300L Satellite Modem

2.3 External Modem Connections

When a breakout panel, such as the UB-530, is not required, the rear panel connectors provide all necessary external connections between the modem and other equipm ent. Table 2-1 lists these connectors, and Figure 2-2 through Figure 2-5 show their locations.

Notes:

1. Refer to the Comtech EFData UB-530 Universal Breakout Panel Installation and Operation Manual

for connecting the UB-300 breakout panel.

2. Refer to the Comtech EFData UB-54 Breakout Panel Installation and Operation

Manual

for connecting the UB-54 breakout panel in a MUX option

configuration.

Table 2-1. Modem Rear Panel Connectors

Name

TX/IF OUTPUT CP1 BNC (70/140 MHz)

EXT REF CP2 BNC EXT REF IN RF IF INPUT CP3 REMOTE J6 9-pin D Remote Interface FAULT J7 9-pin D FORM C Fault Relay C onta c ts DATA I/ O J8 25-pin D

AUX 1 J9 9-pin D (TTL) Faults

ALARMS J10 9-pin D FORM C Alarm

AC INPUT NONE IEC GROUND NONE 10-32 Stud

Ref.

Desig.

Connector Type

RF Output

Type N (L - B a nd)

Type N 75Ω

34-pin 37-pin D 50-pin D

RF Input

Data Input/Output (standard modem) V.35 EIA-449 Data Input/Output (modem with ASYNC/AUPC/IDR/IBS option)

Satellite Clock Demod I/Q Automatic Gain Control (AGC) Out

Relay Contacts

Function

Note:

The European EMC Directive (EN55022, EN50082-1) requires using properly shielded cables for DATA I/O. These cables must be double-shielded from end-to-end, ensuring a continuous ground shield.

2–4 Rev. 2

SDM-300L Satellite Modem Installation

J6 REMOTE

FAULT

J9 AUX 1

ALARMS

EX REF RX/IF INPUT

J10

CP3 CP1CP2

TX/IF OU TP UT

Figure 2-2. Basic Modem, 25-Pin D Connector

J6 REMOTE

FAULT J7

J9 AUX 1

ALARMS J10

EX REF RX/IF INPUT

CP3 CP1CP2

TX/IF OU TPUT

Figure 2-3. (V.35) 34-Pin Winchester Connector

J6 REMOTE

FAULT J7

J9 AUX 1

ALARMS J10

EX REF RX/IF INPUT

CP3 CP1CP2

TX/IF OU TPUT

Figure 2-4. EIA-422/449, 37-Pin D Connector

J6 REMOTE

FAULT

J9 AUX 1

ALARMS

EX REF RX/IF INPUT

J10

CP3 CP1CP2

TX/IF OU TP UT

Figure 2-5. Overhead Option, 50-Pin D Connector

Rev. 2 2–5

Installation SDM-300L Satellite Modem

Remote Connector and Pinouts (J6)

The remote connector is a 9-pin subminiature fem ale D connector (J6) located on the rear panel of the modem. Screw locks are provided for mechanical security of the m ating connector.

The remote connector interfaces the M&C functions to a remote location. The remote location can be an M&C computer located away from the modem, but attached via cable to the remote connector. This DCE interface is user selectable for either EIA-232 or EIA-484.

Refer to Table 2-2 for pinout information.

Table 2-2. Remote Connector and Pinouts (J6)

Pinout

EIA-232 EIA-485

Pin #

1 1 GND 2 RD (RX) 2 3 TD (TX) 3 4 4* +RX/TX +TX 5 GND 5* -RX/TX -TX 6 DSR 6 7 RTS 7 8 CTS 8* +RX/TX +RX 9 9* -RX/TX -RX

*For 2-Wire Operation:

Only two wires are required.

•

Tie pins 4 and 8 together (both +).

•

Tie pins 5 and 9 together (both -).

•

Name

Pin #

Name

(2-Wire)

Name

(4-Wire)

2–6 Rev. 2

SDM-300L Satellite Modem Installation

Fault Connector and Pinouts (J7)

The fault connector provides Form C contact closures for fault reporting. The three Form C summary fault contacts, ratings 1A maximum at 24 VDC, 0.5A at 120 VAC, are Modulator, Demodulator, and Common Equipment.

The fault interface connection is a 9-pin subminiature female D connector (J7) located on the rear panel of the modem. Screw locks are provided for mechanical security on the mating connector. Refer to Table 2-3 for pinout information.

Table 2-3. Fault Connector and Pinouts (J7)

Pin # Signal Function Name

1 Common equipm e nt is not faulted NO 2 COM 3 Common equipm e nt is faulted NC 4 Modulator is not faulted NO 5 COM 6 Modulator is faulted NC 7 Demodulator is not f a ulte d NO 8 COM 9 Demodulator is f a ulte d NC

Note:

A connection between the common (COM) and normally open (NO)

contacts indicates no fault.

Rev. 2 2–7

Installation SDM-300L Satellite Modem

Data I/O Interface Connector (J8)

The Data I/O interface connector conducts data input and output signals to and from the modem, and connects to the customer’s terrestrial equipment, breakout panel, or protection switch. The modem is currently available with a choice of four Data I/O connectors, as follows:

25-pin D connector is the standard connector shipped with a base

•

platform modem.

• 50-pin D connector is the standard connector when the modem is ordered with the optional overhead PCB or if the overhead PCB has been installed in the field.

50-pin D that can be ordered with the basic modem, but it does not

•

include the Overhead Card. This is used with breakout panels and switches.

37-pin D is an alternate connector available upon special request for the

•

base platform modem.

34-pin Winchester is an alternate connector available upon special

•

request for the base platform modem.

The Data I/O pinout is different for each of the interface configurations. For pinout information, refer to the appropriate table as follows:

Standard: 25-pin D connector Table 2-4 Optional: 34-pin Wincheste r c onne c tor Table 2-5 Optional: 37-pin D connector Table 2-6 Optional: 50-pin D connector Table 2-7

2–8 Rev. 2

SDM-300L Satellite Modem Installation

Table 2-4. 25-Pin D Connector Pinouts

25-Pin D Connector

Pin # EIA-422 EIA-232 V.35

1 SHLD SHLD SHLD 2 SD-A TXD SD-A 3 RD-A RXD RD-A 4 RS-A RTS RTS 5 CS-A CTS CTS 6 DM-A DSR DSR 7 SIGGND SIGGND SIGGND 8 RR-A DCD RLSD

9 RT+B SCR+B 10 RR-B 11 TT+B SCTE+B 12 ST+B SCT+B 13 CS+B 14 SD+B SD+B 15 ST-A ST SCT-A 16 RD+B RD+B 17 RT-A RXC SCR-A 18 LL LL LL 19 RS+B

20* MC-A MC MC-A

21 DF DF DF 22 DM+B

23* MC+B MC-B

24 TT-A TXC SCTE-A 25 MF MF MF

*Note:

Use the MASTER clock for EXTERNAL clock input. This clock input should equal the data rate unless the Asymmetrical Loop Timing Option (ASLT) is available. The ASLT option allows selection of different clock rates that vary from the digital data rate. Refer to the Utility/Modem Type/Modem Options menu for the ASLT option information.

Rev. 2 2–9

Installation SDM-300L Satellite Modem

Table 2-5. 34-Pin Winchester Connector Pinouts (V.35)

Pin # Name

A SIGGND B SHLD C Request to Send (RTS) D Clear to Send (CTS) E Data Set Ready (DSR)

F Receive Line Signal Detect (RLSD) P Send Data A (SD-A) R Receive Data A (RD-A)

S Send Data B (SD+B) T Receive Data B (RD+B) U Serial Clock Transmit External A (SCTE-A) V Serial Clo ck Recei ve A (SCR-A)

W Serial Clock Transmit External B (SCTE+B)

X Serial Clo ck Recei ve B (SCR+B) Y Serial Clock Transmit A (SCT-A)

c (CC) MC-A

d (DD) MC-B

m (MM) Modulator Fault (MF)

n (NN) Demodulator Fault (DF)

a(AA) Seri al Cl ock Transmit B (SCT+B)

Note:

Pins H, J, K, L, M, N, Z, a (AA), b (BB), e (EE), f (FF), h (HH), j (JJ),

k (KK), l (LL) have no connection.

The modem is available with a Winchester V.35 as the data I/O connector (PL/6032). There is a jumper on the unit that either opens or closes the CC line. The interface is shipped with jumpers in positions 2 and 3, because:

1. Comtech EFData has determined that several locations use Fireberd test equipment and a conflict will occur if CC is connected between the modem and the Fireberd.

2. Placing the jumper in positions 2 and 3 opens up the CC line, because the TTC/Fireberd test equipment interfaces use the line for DTE/DCE control.

3. Grounding pin CC at the Fireberd interface will change the Fireberd  to a DCE device.

4. Comtech EFData uses the CC and DD for the input master clock (same as the external clock input to the modem). To input an external clock, chang e the jum per to positions 1 and 2 (the pin closest to the Winchester connector).

2–10 Rev. 2

SDM-300L Satellite Modem Installation

Table 2-6. 37-Pin Connector Pinouts (Optional)

Pin # EIA-422/MIL-188-144

1, 19 Shield 3 MF 4 SD-A 5 ST-A 6 RD-A 7 RS-A 8 RT-A 9 CS-A 11 DM-A 13 RR-A 16 MC-A 17 TT-A 20, 37 SIGGND 21 DF 22 SD+B 23 ST+B 24 RD+B 25 RS+B 26 RT+B 27 CS+B 29 DM+B 31 RR+B 34 MC+B 35 TT+B

There are jumpers on the PL/6031 EIA-422 interface. Place the jumpers on the center pin and the pin towards the Master Clock (MC) to allow an external clock input on pins 16 and 34.

If desired, place the jumpers on the TR side to allow an external clock input on pins 12 and 30. Place the jumpers on the TR side for Demand Assigned Multiple Access (DAMA) applications.

Rev. 2 2–11

Installation SDM-300L Satellite Modem

Table 2-7. 50-Pin Connector Pinouts

50-Pin D Connector

Pin # IDR IBS Async D&I

1 GND GND GND GND 2 GND GND GND GND 3 AGC Out AGC Out AGC Out AGC Out 4 EIA-422 TXOctA In ESC TXDB In (EI A-485 only ) 5 EIA-422 TXOctB I n ESC TXDA In

(EIA - 232 o nly)

6 EIA-422 RXOctA Out ESC RXDB Out

7 EIA-422 RXOctB Out ESC RXDA Out

(EIA - 232 o nly) 8 BWO1_C EIA-422 RX Oct A 9 BWO2_C EIA-422 RX Oct B

10 BWO3_C PRIMARY_C PRIMARY_C 11 BWO4_C SECONDARY_C SECONDARY_C 12 BWAI 1 V.35/EIA-422 S CTE/TT-A V.35/EIA-422 SCT E/TT A 13 BWAI 2 V.35/EIA-422 SCTE/TT-B V.35/EIA- 422 S CTE/TT B 14 BWAI 3 EIA-422 TX O ct A 15 BWAI 4 EIA-422 TX O ct B 16 Demod Fault C 17 Def Maint Alrm 18 G.703 SDB In G.703 SDB In G.703 SDB In G.703 SDB In 19 EIA-422 ExtCl kB In V.35/EI A-422 EXCB I n V.35/EIA-422 EXCB I n EIA- 422 EX CB In 20 G.703 RDB Out G.703 RDB Out G.703 RDB Out G.703 RDB Out 21 EIA-422 8k TClkA Out V.35/EIA - 422 S T-A Out V.35/EIA-422 S T-A Out 22 EIA-422 8k TCl kB Out V.35/EIA-422 ST-B O ut V.35/EIA-422 ST - B O ut 23 EIA-422 8k RClkA Out V.35/EIA-422 RT-A O ut V.35/EIA-422 RT-A Out 24 EIA-422 8k RClkB Out V.35/EIA-422 RT- B O ut V.35/EIA-422 RT-B O ut 25 BWO1_NC ESC TCL K Out (EI A-232) 26 BWO2_NC ESC RCLK Out (EIA - 232) 27 BWO3_NC PRIMARY_NC PRIMARY_NC 28 BWO4_NC SECONDARY_NC SECONDARY_NC 29 Aud1-B In (or 64S D B) V.35/EIA - 422 RTS-B V.35/EIA-422 RTS- B 30 Aud1-B Out (or 64RTB) V.35 RL S D /E IA-422 RR-B V.35 RLSD/EIA-422 RR-B 31 Aud2-B In (or 64S T B ) V.35/EIA-422 CT S - B V.35/EIA-422 CTS-B 32 Aud2-B Out (or 64RDB) V.35 DSR/EIA - 422 D M- B V.35 DSR/EIA-422 D M- B 33 DF 34 G.703 SDA In G.703 SDA In G.703 SDA In G.703 SDA In 35 EIA-422 ExtCl kA In V.35/EIA-422 EXCA In V.35/EIA-422 EXCA In EIA-422 EX CA In 36 G.703 RDA Out G.703 RDA O ut G.703 RD A Out G.703 RDA Out 37 EIA-422 8k TX D A In V.35/EIA-422 S D - A In V.35/EIA-422 SD-A I n G.703 DDO-A Out 38 EIA-422 8k TX D B In V.35/EIA-422 SD-B In V.35/EIA-422 S D - B In G.703 DDO-B Out 39 EIA-422 8k RXDA Out V.35/EIA-422 RD-A O ut V.35/EIA-422 RD - A Out G.703 IDI-A I n 40 EIA-422 8k RXDB O ut V.35/EIA-422 RD-B O ut V.35/EIA-422 RD-B O ut G.703 IDI-B In 41 BWO1_NO ES C D S R ( E IA-232) 42 BWO2_NO 43 BWO3_NO PRIMARY_NO PRIMARY_NO 44 BWO4_NO SECONDARY_NO SECONDARY_NO 45 Aud1-A In ( o r 64S D A) V.35/EIA-422 RTS-A V.35/EI A-422 RTS-A 46 Aud1-A Out (or 64RTA) V.35 RLSD/EIA-422 RR- A V.35 RLSD/EIA-422 RR-A 47 Aud2-A In ( o r 64S TA) V.35/EIA-422 CTS-A V.35/EI A-422 CTS-A 48 Aud2-A Out (or 64RD A) V.35 DSR/EIA-422 DM-A V.35 DSR/EIA-422 DM-A ESC DSR ( E IA-232 o nl y) 49 MF 50 Demod Fault NO

ESC TXDA In (EIA - 485 and EIA-232)

(EIA - 485 o nly) ESC RXDA Out (EIA - 485 and EIA-232)

ESC TXD In (EIA - 232 o nly)

ESC RXD Out (EIA - 232 o nly)

2–12 Rev. 2

SDM-300L Satellite Modem Installation

Notes:

1. IDR configuration connector pinouts: a. Backward alarm relay contacts are named for normal no fault

conditions (BWOx-C connected to BWOx-NC if no fault).

b. Backward alarm inputs should be grounded or pulled logic low to clear

the alarm.

c. Signals MF, DF, and DMA are open-collector, high-impedance (if

faulted). MF and DF are used by a backup protection switch if the modem is used in a redundant system.

d. Relay contacts DF-C and DF-NO are named for faulted condition (DF-

C connected to DF-NO, unless demodulator [Demod] fault).

2. D&I/ASYNC interface connector pinouts: a. With regard to alarm relay contacts, COMM is connected to NO when

there is no fault. COMM is connected to NC in a faulted condition.

b. Signals MF, DF, and DMA are open-collector, high-impedance (if

faulted). MF and DF are used by a backup protection switch if the modem is used in a redundant system.

3. The breakout panel provides the external connections between the modem and the terrestrial equipment when the modem has a 50-pin connection.

Rev. 2 2–13

Installation SDM-300L Satellite Modem

2.3.1.1 Data I/O Interface Connector (J8) Removal/Installation

Note:

The following procedures outline the removal and installation of the Data I/O connector (J8). These procedures are written with the assumption that the same configured connector will be reinstalled. However, the operator does have an option to install a different configured connector. Refer to Table 2-8 for a matrix explaining connector options.

Table 2-8. Connector (J8) Matrix

Modem Configuration EIA-232 EIA-422/EIA449 V.35 Overhead

25-pin Connector X X X 34-pin Connector X 37-pin Connector X 50-pin Connector X X X X

2.3.1.1.1 Data I/O Connector (J8) Removal

1. (For Ribbon-Configured Connector PL/6031.) Remove Data I/O connector (J8) (Figure 2-6) as follows:

a. Remove four screws securing the rear panel to the chassis.

b. Pull out rear panel to gain access to disconnect connector (J8).

c. Disconnect connector (J8) from the PCB.

d. Remove the four screws securing connector (J8) to the rear panel.

e. Remove the connector (J8).

2. Remove 50-pin Data I/O connector (J8) as follows:

a. Remove the four screws securing the connector (J8) to the rear panel.

b. Establish a grip on connector (J8) and pull backwards until separation of the

connectors is obtained.

c. Remove connector (J8).

2–14 Rev. 2

SDM-300L Satellite Modem Installation

2.3.1.1.2 Data I/O Connector (J8) Installation

1. (For Ribbon-Configured Connector PL/6031.) Install Data I/O connector (J8) (Figure 2-6) as follows:

a. Position connector (J8) in rear panel.

Use care when connecting the data I/O connector (J8) to the PCB. Damage to the connector pins may render the data I/O connector

CAUTION

b. Connect connector (J8) to the PCB.

c. Secure connector (J8) to the rear panel with four screws.

d. Position the rear panel to mate with the chassis and secure with four screws.

2. Install 50-pin Data I/O connector (J8) as follows:

CAUTION

a. Connect connector (J8) to the PCB.

b. Secure connector (J8) using four screws.

(J8) unserviceable. Misalignment can be the result.

Use care when connecting the Data I/O connector (J8) to the PCB. Damage to the connector pins may render the data I/O connector (J8) unserviceable. Misalignment can be the result.

Rev. 2 2–15

Installation SDM-300L Satellite Modem

For Ribbon-Configured Connector

For 50-Pin Connector with Overhead Interface Board

Figure 2-6. Data I/O Connector (J8) Removal/Installation

2–16 Rev. 2

SDM-300L Satellite Modem Installation

Auxiliary 1 Connector and Pinouts (J9)

The auxiliary 1 (AUX 1) connector provides:

MOD and DEMOD (TTL) faults

•

Satellite clock

•

• Satellite I&Q

Automatic Gain Control (AGC) output voltage

•

The faults are open collector levels that indicate a modulator or demodulator failure. A logic “1” indicates the faulted condition.

AGC_OUT is a programmable voltage, 0 to 10V, for a receive sig n al lev el between

-25 and -60 dBm.

AUX 1 connection is a 9-pin female D connector (J9) located on the rear panel of the modem. Screw locks are provided for mechanical security on the m ating connector. Refer to Table 2-9 for pinout information.

Table 2-9. AUX 1 Connector and Pinouts (J9)

Pin # Signal Function Name

1 Satellite Clock - SAT_CLK2 No Connection NC 3 Satellite Clock + SAT_CLK+ 4 MODULATOR TTL Fault MDFLTTTL 5 Ground GRN 6 RX_Q RX Q Channe l Eye 7 DEMODULATOR TTL Fault 8 RX 1 Channel Eye RX_1 9 AGC Output AGC

Rev. 2 2–17

Installation SDM-300L Satellite Modem

Alarms Connector and Pinouts (J10)

The alarm connector provides Form C contact closures for alarm reporting . The two Form C summary fault contacts are Modulator and Demodulator.

The alarm connection is a 9-pin female D connector (J10) located on the rear panel of the modem. Screw locks are provided for mechanical security on the m ating connector. Refer to Table 2-10 for pinout information.

Table 2-10. Alarms Connector and Pinouts (J10)

Pin # Signal Function Name

1 Alarm 1 is f a ulte d NO 2 COM 3 Alarm 1 is not f a ulte d NC 4 Alarm 2 is f a ulte d NO 5 COM 6 Alarm 2 is not f a ulte d NC 7 Alarm 3 is f a ulte d NO 8 COM 9 Alarm 3 is not f a ulte d NC

Alarm 1 = Not used

•

Alarm 2 = TX

•

Alarm 3 = RX

•

RF Output Connector (CP1)

70/140 MHz Configura t io n

L-Band Configuration

CP1 is a BNC connector f or the T X IF s ig na l. The output impedance is 75Ω and the output return loss is ≥ _20 dB. In normal operation, the output will be a QPSK (Optional: OQPSK) or BPSK modulate d res ult of the Data I/O connec tor between 50 and 180 MHz, in 1 Hz s te ps .

CP1 is a Type N c onnec t or for the TX IF signal. The output impedance is 50Ω and the output return loss is ≥ -15 dB. In normal operation, the output will be a QPSK (Optional: OQPSK) or BPSK modulate d res ult of the Data I/O connec tor between 950 to 1750 MHz, in 100 Hz s te ps .

2–18 Rev. 2

SDM-300L Satellite Modem Installation

External Reference (CP2)

CP2 is a BNC connector for an EXT REF. The input impedance is 75Ω. For normal operation, the desired carrier signal level is ≥ 0 dB.

EXT REF frequencies are EXT 1, EXT 5, EXT 10, and EXT 20 MHz.

RF Input Connector (CP3)

CP3 is a Type N connector for an RX IF signal. The input impedance is 75Ω (Optional: 50Ω). And the input return loss is ≥ 10 dB from 950 to 1750 MHz.

AC Power Connector

A standard, detachable, non-locking, 3-prong power cord (IEC plug) supplies the Alternating Current (AC) power to the modem. Observe the following:

Input Power Input Voltage

Connector Type Fuse Protection

55W maximum, 40W typical 90 to 132 or 175 to 264 VAC Unit switches ranges automatically I.E.C 1A slo-blo Line and neutral fusing 5 mm type fuses

Ground Connector (GND)

A #10-32 stud on the rear panel of the modem is used for connecting a common chassis ground among all equipment.

Note:

The AC power connector provides the safety ground.

Rev. 2 2–19

Installation SDM-300L Satellite Modem

This page is intentionally left blank.

2–20 Rev. 2

This chapter describes the operation of the SDM-300L using the front panel menus.

3.1 Front Panel

The modem front panel (Figure 3-1) enables control of modem configuration parameters and displays the modem status.

Chapter 3.

OPERATION

Figure 3-1. Front Panel View

The front panel features include:

32-character, 2-line LCD display

•

6-button keypad for local control

•

10 LEDs to provide overall status at a glance

•

All functions are accessible at the front panel by entering one of six pre-defined Function Select categories or levels:

Configuration

•

Monitor

•

Faults/Alarms

•

Stored Faults/Alarms

•

Remote AUPC (ASYNC mode only)

•

Utility

•

Rev. 2 3–1

Operation SDM-300L Satellite Modem

3.1.1 LED Indicators

The 10 LEDs on the front panel indicate:

• General modem summary faults

Status

•

• Alarms

The indicators are defined in Table 3-1 as follows:

Table 3-1. LED Indicators

Name LED Description

Faults

Transmit Red A fault condition exists in the transmit chain. Receive Red A fault condition exists in the receive chain. Common Red A common equipment fault condition exists. Stored Yellow A fault has been logged and stored.

The fault may or may not be a c tive.

Status

Power On Green Power is applied to the modem. Transmitter On Green Transmitter is currently on.

This indicator reflects the actual condition of the transmitter, as

opposed to the programmed c ondition. Carrier Detect Green Decoder is locked. Test Mode Yellow Flashes w hen the m odem is in a test configuration.

Alarms

Transmit Yellow A transmit function is in an alarm condition. Receive Yellow A receive function is in an alarm condition.

3.1.2 Front Panel Keypad

The front panel keypad permits local operation of the modem. The keypad consists of six keys (Figure 3-2).

ENTER

CLEAR

Figure 3-2. Keypad

3–2 Rev. 2

SDM-300L Satellite Modem Operation

Each key provides one or more logical functions. These functions are defined in the following table.

ENTER

CLEAR

Left and Right Diamond Keys

Top and Bottom Diamond Keys

This key is used to selec t a dis play e d f unc tion or to e x ec ute a m odem configuration change. This key is used to back out of a selection or to cancel a configuration change which has not been exec ute d us ing [ENTER]. Pressing [CLEAR] ge nera lly r etur ns the display to the previous selection. These keys are used to m ove to the ne x t s e lec tion or to move the cursor functions.

Note:

Throughout this chapter, [←] and [→] are used to indicate left and right diamond keys. These keys are used primarily to change configuration data (numbers). At times, they are also used to move from one section to another.

Note:

Throughout this chapter, [↑] and [↓] are used to indicate top and bottom diamond keys.

The modem responds by beeping whenever a key is pressed:

A single beep indicates a valid entry and the appropriate action was taken.

•

A double beep indicates an invalid entry or a parameter is not available for

•

operation.

Rev. 2 3–3

Operation SDM-300L Satellite Modem

3.2 Menu System

Note:

The menus show features and options that are not available. However, they are shown to preserve the menu structure and reserve the structure for the future. This does not imply an intent or obligation to add these features or options in the future.

To access and execute all functions, refer to Figure 3-3 through Figure 3-22. Use the Main menu in Figure 3-3 as a quick reference for accessing the modem functions.

When the modem power is applied, the base level of the menu system displays the sign-on message:

Line 1 of the sign-on message is the modem model number and type.

•

Line 2 is the version number of the firmware.

•

The main level of the menu system is Function Select. To access this level from the sign-on message, press the [←] or [→] keys. From the Function Select menu; select one of the functional categories:

Configuration

•

Monitor

•

Faults/Alarms

•

Stored Faults/Alarms

•

Remote AUPC (ASYNC mode only)

•

Utility

•

Press [←] or [→] to move from one selection to another. When line 2 displays the desired function, select that level by pressing [ENTER]. After entering the appropriate functional level, press [←] or [→] to move to the desired function.

To view or change the modem’s configuration, enter the Configuration level from the Function Select menu. Once in the Configuration menu, press [←] or [→] to scroll through the Configuration menu selection:

Modulator

•

Demodulator

•

Interface

•

Local AUPC (ASYNC Mode or Local Modem AUPC only)

•

MUX (Optional)

•

Save

•

Recall

•

Press [ENTER] to select the desired Configuration menu option. To view the options for the selected configuration parameters, press [←] or [→]. To change a configuration parameter, press [ENTER] to begin the change process .

3–4 Rev. 2

SDM-300L Satellite Modem Operation

Press [↑] or [↓] to change the parameters. After the display represents the correct parameters, press [ENTER] to execute the change. This action initiates the necessary programming by the modem.

To undo a parameter change prior to execution

, press [CLEAR].

Notes:

1. Figure 3-3 list the front panel menu window selections.

2. ComTech EFdata recommends that selection of the desired Modem Type be made prior to making any other setting. This procedure is located in the Utility Modem Type menu.

3. Menus or commands that are specific to certain modem configurations are only accessible after selecting the appropriate modem configuration. This prevents incompatible parameters from accidentally being selected.

4. All of the windows are accessible in the Custom mode. Take caution not to select incompatible parameters, as the modem does not shut out incompatible command choices in the Custom mode.

3.2.1 Code Rate and Data Rate Range

The following code rates and data rate range apply to the SDM-300L.

Code Rate Data Rate Range

BPSK 1/2 QPSK 1/2 QPSK 3/4 QPSK 7/8 OQPSK 1/2 OQPSK 3/4 OQPSK 7/8 BPSK 1/1 QPSK 1/1

Note:

In some applications the practical lower data rate is typically 19.2 kbit/s, or higher, depending upon the performance of equipment used in conjunction with the SDM-300L. These applications include the use of a BUC or an LNB.

2.4 to 1250 kbit/s

4.8 to 2500 kbit/s

7.2 to 3750 kbit/s

8.4 to 4375 kbit/s

4.8 to 2500 kbit/s

7.2 to 3750 kbit/s

8.4 to 4375 kbit/s

4.8 to 2500 kbit/s

9.6 to 5000 kbit/s

Rev. 2 3–5

Operation SDM-300L Satellite Modem

3.2.2 Front Panel Menu

FUNCTION SELECT

CONFIGURATION

MODULATOR

CONFIGURATION

DEMODULATOR

CONFIGURATION

INTERFACE

CONFIGURATION

LOCAL AUPC

CONFIGURATION

MUX

Non TX/RX L-Band Modem Only TX/RX L-Band Modem Only

FUNCTION SELECT

MONITOR

SDM300L-1 ""TYPE"

VER: 2.1.2

FUNCTION SELECT

FAULTS/ALARMS

Note:

The menus show features

FUNCTION SELECT

STORED FLTS/ALMS

and options that are not available. However, they are shown to

SDM300L-2 ""TYPE"

VER: 2.1.2

FUNCTION SELECT

REMOTE AUPC

CONFIGURATION

REMOTE AUPC

MONITOR

FUNCTION SELECT

UTILITY

MODULATOR

UTILITY

DEMODULATOR

UTILITY

INTERFACE

UTILITY

SYSTEM

preserve the menu structure and reserve the structure for the future. This does not imply an intent or obligation to add these features or optionsin the future.

UTILITY

MODEM TYPE

CONFIGURATION

FLEX MUX

CONFIGURATION

SAVE

CONFIGURATION

RECALL

Key:

ACCESS TO

SUBMENU

CONDITIONAL OR

OPTION-

DEPENDENT

UTILITY

FACTORY SETUP

Parameter

Information

Figure 3-3. Main Menu

3–6 Rev. 2

SDM-300L Satellite Modem Operation

SDM300L "TYPE"

VER: X.X.X

TX-X QPSK 1/2

Refer to Para 3.6

TX-IF OUTPUT

OFF

DIFFERENTIAL ENCODER

FUNCTION SELECT

CONFIGURATION

TX-IF FREQUENCY

50 to 180 MHz (in 1 Hz steps)

NonTX/RX L-Band Modem

Only

TX POWER LEVEL

-5.0 to -30.0 dBm (normal range) +5.0 to -20 dBm (high power option) NonTX/RX L-Band Modem Only

CARRIER MODE

CONFIGURATION

MODULATOR

TX-IF FREQUENCY

950 to 1750 MHz (in 100 Hz steps)

TX/RX L-Band Modem

TX POWER LEVEL

0 to -30.0 dBm

TX/RX L-Band Modem Only

MODEM REFERENCE

Only

TX TERMINAL FREQUENCY

10950 to 12750 MHz

(Range dependent on LNB

selection, LO and MIX, in

100 Hz steps)

SCRAMBLER

OFF

ODU POWER

OFF

ODU VOLTAGE

13, 18, or 24 VDC

TX/RF L-Band Modem Only

NORMAL-MODULATED

CENTER-CW OFFSET-CW

DUAL-CW

ODU REFERENCE

OFF

TX/RF L-Band Modem

Only

INTERNAL EXT 1 MHz

EXT 5 MHz EXT 10 MHz EXT 20 MHz

OUTPUT 10 MHz

(High Stability Option Only)

RS ENCODER

OFF

Reed-Solomon only

Key:

ACCESS TO

SUBMENU

CONDITIONAL OR

OPTION-DEPENDENT

Parameter Information

Figure 3-4. Configuration Modulator Menu

OFF

TX/RF L-Band Only

Rev. 2 3–7

Operation SDM-300L Satellite Modem

SDM300L "TYPE"

VER: X.X.X

RX-X QPSK 1/2

Refer to para 3.6

DIFFERENTIAL

DECODER

OFF

SWEEP RANGE

FUNCTION SELECT

CONFIGURATION

RX-IF FREQUENCY

950 to 1750 MHz (in 100 Hz steps)

IF LOOPBACK BER THRESHOLD

OFF

TX/RX L-Band Only

REACQUISITION

CONFIGURATION

DEMODULATOR

RX TERMINAL

FREQUENCY

10950 to 12750 MHz

(Range dependent on LNB selection,

LO and MIX, in 100 Hz steps)

None

1.0 E-X

(X = 3 to 8)

LNB POWER

DESCRAMBLER

OFF

SWEEP CENTER

-75,000 to +75,000 Hz

LNB VOLTAGE

0 to 150,000 Hz

LNB 10 MHz REF

OFF

0 to 999 Seconds

RS DECODER

OFF

CORRECTION_OFF

(Reed-Solomon only)

OFF

Key:

ACCESS TO

SUBMENU

Figure 3-5. Configuration Demodulator Menu

13, 18, or 24 VDC

CONDITIONAL OR

OPTION-DEPENDENT

Parameter Information

3–8 Rev. 2

SDM-300L Satellite Modem Operation

SDM300L "TYPE"

VER: X.X.X

TX CLOCK SOURCE TX CLOCK PHASE

TX TERRESTRIAL

SCT (INTERNAL

EXT. CLOCK

EXT CLK: TX data rate

Note:

and EXT-CLK FREQ must match or ASLT option installed.

BUFFER SIZE BUFFER CENTER

32 to 262144 bit/s

(16 bit steps)

1 to 9 mS

0 (Bypass)

INTERFACE

LOOPBACK

FUNCTION SELECT

CONFIGURATION

NORMAL

INVERT

LOOP TIMING

AUTO

Yes

CONFIGURATION

INTERFACE

EXT-CLK FREQ BUFFER CLOCK

8kHz to 10 MHz

RX CLOCK PHASE B-BAND LOOP BACK

NORMAL

INVERT

TX DATA FAULT RX DATA FAULT

RX (SATELLITE)

SCT (INTERNAL)

EXT. CLOCK

TX TERRESTRIAL

INSERT CLOCK

OFF

Overhead/RS only

TX 2047 PATTERN

OFF

TX/RX data rate must

Note:

matchorASLT option installed.

RX 2047 PATTERN

OFF

NONE

AIS

DATA

Overhead only

TX CODING

FORMAT

AMI

B8ZS

HDB3

TX G.703 only

Key:

ACCESS TO

SUBMENU

CONDITIONAL OR

OPTION-DEPENDENT

Figure 3-6. Configuration Interface Menu

NONE

AIS

DATA

Overhead only

RX CODING

FORMAT

AMI B8ZS HDB3

RX G.703 only

Parameter

Information

Rev. 2 3–9

Operation SDM-300L Satellite Modem

CONFIGURATION

INTERFACE continued

SERVICE

CHANNEL ADJUST

CHANNEL: TX-1

CHANNEL: TX-2 CHANNEL: RX-1 CHANNEL: RX-2

Level = +10 to -20 dBm

IDR only

INSERT CHANNEL

ASSIGNMENTS

INSERT SAT

CHANNEL TERR

(T1, T1_EST, T1_S,

T1_EST_S FORMATS)

INSERT SAT

T-SLOT TERR

(ALL OTHER FORMATS)

RX D&I only

DROP FORMAT

E1_CCS E1_CAS

T1_ESF

TX D&I overhead

only

ASYNC TX BAUD

BAUD RATES (bit/s)

110 150 300

600 1200 2400 4800 9600

19200 38400

TX ASYNC only

INSERT FORMAT

E1_IBS

E1_31_TS

T1_IBS

T1_S

T1_ESF_S

RX D&I overhead

only

ASYNC RX BAUD ASYNC TX LENGTH

BAUD RATES (bit/s)

110 150 300

600 1200 2400 4800 9600

19200 38400

RX ASYNC only

DROP CHANNEL

ASSIGNMENTS

DROP SAT

(T1, T1_ESF, T1_S,

T1_EST_S FORMATS)

CHANNEL TERR

DROP SAT

T-SLOT TERR

(ALL OTHER FORMATS)

TX D&I overhead

only

5 BITS 6 BITS 7 BITS 8 BITS

TX ASYNC only

ASYNC RX

LENGTH

5 BITS 6 BITS 7 BITS 8 BITS

RX ASYNC only

ASYNC RX PARITY

EVEN

ODD

NONE

RX ASYNC only

ASYNC TX STOP

1 BITS 2 BITS

TX ASYNC only

ASYNC RX STOP

1 BITS 2 BITS

RX ASYNC only

Key:

ACCESS TO

SUBMENU

CONDITIONAL OR

OTION-DEPENDENT

ASYNC TX PARITY

EVEN

ODD

NONE

TX ASYNC only

Parameter Information

Figure 3-6. Configuration Interface Menu (Continued)

3–10 Rev. 2

SDM-300L Satellite Modem Operation

SDM300L "TYPE"

VER: X.X.X

AUPC ENABLE NOMINAL POWER MINIMUM POWER MAXIMUM POWER

OFF

TARGET NOISE TRACKING RATE LOCAL CL ACTION REMOTE CL ACTION

3.2 to 16.0 dB

(In 0.1 dB steps)

FUNCTION SELECT

CONFIGURATION

-5.0 to -30.0 dBm

(In 0.5 dBm steps)

[0 to -40.0 TX/RX L-Band Only]

0.5 to 6.0 dBm/min

(In 0.5 dBm/min steps)

CONFIGURATION

LOCAL AUPC

(AUPC option only)

-5.0 to -30.0 dBm

(In 0.5 dBm steps)

[0 to -40.0 TX/RX L-Band Only]

NOMINAL MAXIMUM

HOLD

-5.0 to -30.0 dBm

(In 0.5 dBm steps)

[0 to -40.0 TX/RX L-Band Only]

HOLD NOMINAL MAXIMUM

Key:

ACCESS TO

SUBMENU

CONDITIONAL OR

OPTION-DEPENDENT

Parameter Information

Figure 3-7. Configuration Local AUPC Menu

Notes:

1. Used for ASYNC/AUPC option and for self-monitoring local AUPC control.

2. Manufacturer does not recommend the tracking noise ( E

) be set within 15.5 and 16.0 dB.

b/N0

Rev. 2 3–11

Operation SDM-300L Satellite Modem

SDM300L "TYPE"

VER: X.X.X

TRIBUTARY #n

INTERFACE

DISABLED

0.6 to 4000 kbit/s

(in 100bit/s steps)

EIA-232/EIA-422

EIA-232

AGGREGATE DR

3.7 to 4001.3 kbit/s (Status only)

FUNCTION SELECT

FIGURATION

TRBUTARY #n

CLK:NRM DATA:NRM

NORMAL

INVERT

CONFIGURATION MUX (MUX PCB installed only)

Key:

ACCESS TO

SUBMENU

OPTION-DEPENDENT

Figure 3-8. Configuration MUX

TRIBUTARY #n

ASYNC Format:

7E1, 7E2, 7O1, 7O2,

7N2, 8N1, 8N2

CONDITIONAL OR

MODE

SYNC

ASYNC

Parameter Information

3–12 Rev. 2

SDM-300L Satellite Modem Operation

Flex Mux PCB (Card Slot #1)

SDM300L "TYPE"

VER: X.X.X

FUNCTION SELECT

CONFIGURATION

FLEX MUX

Note:

installed). Modem Type: Custom,

Overhead Type: Flex Mux.

TX CHAN #1 MODE

D&I ENABLED

T1/E1 ENABLED

DISABLED

(Normal D&I/G.703 menus

are operational)

TX CHAN #3 DR

SYNC EIA-422:

0.6 to 4000.0 kbit/s (All other models:

0.6 to 64.0 kbit/s)

(Not displayed if AUPC or

DISABLED is selected.)

TX CHAN #4 PHASE

NORMAL

INVERTED

(Not displayed if AUPC or

DISABLED is selected.)

TX CHAN #1 DR

1544.0 kbit/s

2048 kbit/s for BYPASS

64 kbit/s for D&I

TX CHAN #3 PHASE

NORMAL

INVERTED

(Not displayed if AUPC or

DISABLED is selected.)

TX CHAN #2 MODE

ADPCM ENABLED

ADPCM DISABLED

(Allows 32 kbit/s operation)

TX CHAN #4 MODE

ASYNC EIA-232

SYNC EIA-232

ASYNC EIA-485

AUPC

DISABLED

Key:

ACCESS TO

SUBMENU

TX CHAN #3 MODE

ASYNC EIA-232

SYNC EIA-232

ASYNC EIA-422

SYNC EIA-422

DISABLED

TX CHAN #4 DR

0.6 to 64.0 kbit/s

(Not displayed if AUPC or

DISABLED is selected.)

CONDITIONAL OR

OPTION-DEPENDENT

AUPC

Parameter Information

Figure 3-9. Configuration Flex Mux

Note:

The Flex Mux Channel 1, D&I will operate with other modems that are set for D&I as long

as Channels 2, 3, and 4 are Off.

Rev. 2 3–13

Operation SDM-300L Satellite Modem

RX CHAN #1 MODE

D&I ENABLED

T1/E1 ENABLED

DISABLED

(Normal D&I/G.703 menus are

operational)

RX CHAN #3 DR

SYNC EIA-422:

0.6 to 4000.0 kbit/s (All other models:

0.6 to 64.0 kbit/s)

(Not displayed if AUPC or

DISABLED is selected)

RX CHAN #4 PHASE

NORMAL

INVERTED

(Not displayed if AUPC or

DISABLED is selected)

Notes:

1. The MOD and DEMOD data rates are status only. Only the code rate can be changed. The data rate displayed includes data rates of all channels plus 1.3 kbit/s (if applicable) fixed overhead.

2. When calculating the symbol rate based on the programmed code rate, D&I overhead (16/15 if enabled) and Reed-Solomon overhead (126/112 or 219/201 if enabled) must be included.

3. Channels 3 and 4 data rates are in steps or 100 bit/s.

4. AUPC can only be enable on one tributary (Channel 3 or 4).

5. AUPC Channel operates at 600 bit/s.

6. ASYNC communications fixed at 10 bits per word.

RX CHAN #1 DR

1544.0 kbit/s

2048 kbit/s for BYPASS

64 kbit/s for D&I

(Not displayed if DISABLED is

selected)

RX CHAN #3 PHASE

NORMAL

INVERTED

(Not displayed if AUPC or

DISABLED is selected)

RX CHAN #2 MODE

ADPCM ENABLED

ADPCM DISABLED

(Allows ADPCM 32 kbit/s

operational)

RX CHAN #4 MODE

ASYNC EIA-232

SYNC EIA-232

ASYNC EIA-485

AUPC

DISABLED

Key:

ACCESS TO

SUBMENU

CONDITIONAL OR

OPTION-DEPENDENT

RX CHAN #3 MODE

ASYNC EIA-232

SYNC EIA-232

ASYNC EIA-422

SYNC EIA-422

AUPC

DISABLED

RX CHAN #4 DR

0.6 to 64.0 kbit/s

(Not displayed if AUPC or

DISABLED is selected)

Parameter Information

7. Frame BER not operational.

Figure 3-9. Configuration Flex Mux (Continued)

3–14 Rev. 2

SDM-300L Satellite Modem Operation

SDM300L "TYPE"

VER: X.X.X

CONFIGURATION #x

x = 1, 2, 3, 4, OR 5

SDM300L "TYPE"

VER: X.X.X

FUNCTION SELECT

CONFIGURATION

Key:

ACCESS TO

SUBMENU

CONDITIONAL OR

OPTION-

DEPENDENT

Figure 3-10. Configuration Save Menu

FUNCTION SELECT

CONFIGURATION

RECALL

SAVE

Parameter

Information

CONFIGURATION #x

Key:

x = 1, 2, 3, 4, or 5

ACCESS TO

SUBMENU

CONDITIONAL OR

OPTION-DEPENDENT

Parameter Information

Figure 3-11. Configuration Recall Menu

Rev. 2 3–15

Operation SDM-300L Satellite Modem

SDM300L "TYPE"

VER: X.X.X

RAW BER

CURRENT RAW BER

No Data

Low limit: based on performance

High limit: based

on data/code rate

SWEEP

FREQUENCY

CURRENT SWEEP

FREQUENCY

(-35,000 to +35,000 Hz)

No Data (if carrier not

locked)

FUNCTION SELECT

MONITOR

CORRECTED

BER

CURRENT CORRECTED BER

No Data

(Range 1.0 E-3 to 1.0 E-12)

BUFFER FILL

CURRENT BUFFER

FILL STATUS

(1 to 99%)

EB/NO RECEIVE SIGNAL

CURRENT Eb/NO

No Data

(Range: 2.0 to 16.0 dB)

FRAME ERRORS

CURRENT FRAME/2047 BER

No Data (if carrier not locked)

Low limit: based

on performance High limit: based on data/code rate

DEMUX installed only

CURRENT RECEIVE

LEVEL

RANGE: -140dBM +

10LOG(SR) to -85dBM +

10LOG(SR)

LNB CURRENT

MONITORS THE LNB

CURRENT OR "LNB

POWER OFF."

CURRENT DISPLAY IS

0 TO 500 mA IN 1 mA

INCREMENTS.

ODU CURRENT

MONITORS THE ODU

CURRENT OR "ODU

POWER OFF." CURRENT

DISPLAY IS 0 TO 4000 mA

IN 1 mA INCREMENTS.

TX/RX L-Band Modem only

TX L-BAND FREQ

950 to 1750 MHz (in 100 Hz steps)

TX/RX L-Band Modem and

TX Terminal Frequency

<ENTER> in Utility-MOD

section.

RX L-BAND FREQ

950 to 1750 MHz (in 100 Hz steps)

TX/RX L-Band Modem and

TX Terminal Frequency

<ENTER> in Utility-DEMOD

section.

Key:

ACCESS TO

SUBMENU

CONDITIONAL OR

OPTION-DEPENDENT

Parameter Information

Figure 3-12. Monitor Menu

3–16 Rev. 2

SDM-300L Satellite Modem Operation

SDM300L "TYPE"

VER: X.X.X

MODULATOR DEMODULATOR TX INTERFACE RX INTERFACE

IF SYNTHESIZER

DATA CLOCK SYN

I CHANNEL

Q CHANNEL

AGC LEVEL

MODEM REF ACT

MODEM REF PLL

MODULE

CONFIGURATION

COMMON BACKWARD ALARMS

BATTERY/CLOCK

-12 VOLT SUPPLY

+12 VOLT SUPPLY

+ 5 VOLT SUPPLY

SELF TEST

CONTROLLER

INTERFACE MODULE

FUNCTION SELECT

FAULTS/ALARMS

CARRIER DETECT

IF SYNTHESIZER

I CHANNEL

Q CHANNEL

BER THRESHOLD

MODULE

CONFIGURATION

BW ALARM RX #4 BW ALARM RX #3 BW ALARM RX #2 BW ALARM RX #1 BW ALARM TX #4 BW ALARM TX #3 BW ALARM TX #2 BW ALARM TX #1

IDR only

LNB

TX DROP

TX DATA/AIS

TX CLK PLL TX CLK ACTIVITY TX AUDIO 1 CLIP TX AUDIO 2 CLIP

CONFIGURATION

ODU

CURRENT AND VOLTAGE

TX/RX L-Band only

BUFFER UNDERFLOW

BUFFER OVERFLOW

BACKWARD ALARM

BUFFER CLK PLL

BUFFER CLK ACT

RX AUDIO 1 CLIP RX AUDIO 2 CLIP CONFIGURATION

Notes:

1. A "-" indicates that no fault or alarm exists.

2. A "+" indicates that a fault exists, and will cause switching in a redundant system.

3. A reversed contrast "+" indicates an active alarm.

RX DATA/AIS

FRAME BER

DEMUX LOCK

RX 2047 LOCK

BUFFER FULL

RX INSERT

Key:

ACCESS TO

SUBMENU

CONDITIONAL OR

OPTION-DEPENDENT

Parameter Information

Figure 3-13. Faults/Alarms Menu

Rev. 2 3–17

Operation SDM-300L Satellite Modem

SDM300L "TYPE"

VER: X.X.X

MODULATOR x DEMODULATOR x TX INTERFACE x RX INTERFACE x

STORED TIME/DATE

HH:MM:SS/MM-DD-YY

(FAULT LABEL)

IF SYNTHESIZER

DATA CLOCK SYN

I CHANNEL

Q CHANNEL

AGC LEVEL MODEM REF ACT MODEM REF PLL

MODULE

CONFIGURATION

ODU

COMMON x

STORED TIME/DATE

HH:MM:SS/MM-DD-YY

(FAULT LABEL)

BATTERY/CLOCK

-12 VOLT SUPPLY +12 VOLT SUPPLY

+5 VOLT SUPPLY

SELF TEST

CONTROLLER

INTERFACE MODULE

FUNCTION SELECT

STORED

FAULTS/ALARMS

STORED TIME/DATE

HH:MM:SS/MM-DD-YY

(FAULT LABEL)

CARRIER DETECT

IF SYNTHESIZER

I CHANNEL

Q CHANNEL

BER THRESHOLD

MODULE

CONFIGURATION

BACKWARD

ALARMS x

STORED TIME/DATE

HH:MM:SS/MM-DD-YY

(FAULT LABEL) BW ALARM RX #4 BW ALARM RX #3 BW ALARM RX #2 BW ALARM RX #1

BW ALARM TX #4 BW ALARM TX #3 BW ALARM TX #2 BW ALARM TX #1

TX/RX IDR only

LNB

STORED TIME/DATE

HH:MM:SS/MM-DD-YY

(FAULT LABEL)

TX DROP

TX DATA/AIS

TX CLK PLL

TX CLK ACTIVITY

TX AUDIO 1 CLIP TX AUDIO 2 CLIP

CONFIGURATION

ODU

CURRENT AND VOLTAGE

TX/RX L-Band only

STORED TIME/DATE

HH:MM:SS/MM-DD-YY

(FAULT LABEL)

BUFFER UNDERFLOW

BUFFER OVERFLOW

RX DATA/AIS

BACKWARD ALARM

BUFFER CLK PLL

BUFFER CLK ACT

DEMUX LOCK RX 2047 LOCK BUFFER FULL

RX AUDIO 1 CLIP RX AUDIO 2 CLIP

CONFIGURATION

STORED TIME/DATE

(Reed-Solomon option only)

FRAME BER

RX INSERT

UNAVAL

SECONDS x

CLEAR??

STORED FAULTS

YES

Notes:

1. x = 0 TO 9.

2. Stored time/date will alternate. HH:MM:SS/mm-dd-yy, or no fault.

Key:

ACCESS TO

SUBMENU

CONDITIONAL OR

OPTION-DEPENDENT

Parameter Information

Figure 3-14. Stored Faults/Alarms Menu

3–18 Rev. 2

SDM-300L Satellite Modem Operation

SDM300L "TYPE"

VER: X.X.X

AUPC ENABLE

OFF

Control or last known status

ASYNC option only

Figure 3-15. Remote AUPC Configuration Menu

FUNCTION SELECT

REMOTE AUPC

B-BAND LOOPBACK

OFF

Control or last known status

ASYNC option only

Key:

ACCESS TO

SUBMENU

REMOTE AUPC

CONFIGURATION

Control or last known status

CONDITIONAL OR

OPTION-DEPENDENT

TX 2047 PATTERN

OFF

ASYNC option only

Parameter Information

SDM300L "TYPE"

VER: X.X.X

2047 ERRORS

BER

No Data

Current RX 2047 GER

n.n E-e

ASYNC option only

FUNCTION SELECT

REMOTE AUPC

Key:

ACCESS TO

SUBMENU

REMOTE AUPC

MONITOR

CONDITIONAL OR

OPTION-DEPENDENT

Figure 3-16. Remote AUPC Monitor Menu

Parameter Information

Rev. 2 3–19

Operation SDM-300L Satellite Modem

SDM300L "TYPE"

VER: X.X.X

ASSIGN TX

FILTER

Refer to para 3.6.

ENCODER TYPE

VITERBI

SEQUENTIAL

FUNCTION

SELECT UTILITY

TX TERMINAL LO

LO Frequency of BUC

MIX = + If LO < Satellite Frequency MIX = - If LO > Satellite Frequency

TX BPSK ORDERING

STANDARD

NON-STANDARD

UTILITY

SINGLE CODE

DATA RATE

(Modems Only)

MOD POWER OFFSET

-99.9 to +99.9 dB in 0.1 dB steps

[Anthing, except 0.0 dB

will cause "ADJ" to be displayed

in the TX power level screen.]

MOD SPECTRUM

NORMAL

INVERT

UTILITY

MODULATOR

MODULATOR TYPE

INTELSAT OPEN

CSC CLOSED FDC CLOSED

SDM51 COMPATIBLE

EFD CLOSED

TX-RS INTERLEAVE

4, 8, or 16 Deep

TX IESS -310 MODE

OFF

(8PSK 2/3 with

Reed-Solomon option only)

ODU ALARM - LOW

0 to 4000 mA in 1 mA steps

TX/RX L-Band Modem only

ODU - HIGH

0 to 4000 mA in 1 mA steps

TX/RX L-Band Modem only

TX SYMBOL RATE

4.8 to 2500 Ksps (Status only)

Key:

ACCESS TO

SUBMENU

CONDITIONAL OR

OPTION-DEPENDENT

Parameter Information

Figure 3-17. Utility Modulator Menu

3–20 Rev. 2

SDM-300L Satellite Modem Operation

SDM300L "TYPE"

VER: X.X.X

ASSIGN RX

FILTER

Refer to para 3.6.

RX BPSK ORDERING DEMOD SPECTRUM

STANDARD

NON-STANDARD

FUNCTION

SELECT UTILITY

RX TERMINAL LO

LO Freq of LNB MIX = + If LO < Satellite Frequency MIX = - If LO > Satellite Frequency

NORMAL

INVERT

UTILITY

DEMODULATOR

DEMODULATOR TYPE

INTELSAT OPEN

CSC CLOSED FDC CLOSED EFD CLOSED

RX-RS INTERLEAVE

4, 8, or 16 Deep

DECODER TYPE

VITERBI

SEQUENTIAL

RX IESS-310

OFF

(8PSK 2/3 and Reed-

Solomon)

LNB ALARM - LOW

O to 500 mA in1 mA steps

LNB ALARM - HIGH

0 to 500 mA in 1 mA steps Note: The low limit must be

less than the high limit.

RS SYMBOL RATE

4.8 TO 2500 Ksps Status only

Key:

ACCESS TO

SUBMENU

CONDITIONAL OR

OPTION-DEPENDENT

Figure 3-18. Utility Demodulator Menu

Parameter Information

Rev. 2 3–21

Operation SDM-300L Satellite Modem

SDM300L "TYPE"

VER X.X.X

TX OVERHEAD TYPE

NONE

IDR

IBS

DROP & INSERT

ASYNC

AUPC

BUFFER PROGRAM

BITS

MILLI-SECONDS

FUNCTION SELECT

UTILITY

RX OVERHEAD TYPE

NONE

DROP & INSERT

ASYNC

AUPC

FRAMING

STRUCTURE

T1 FRAMING

STRUCTURE:

IDR

IBS

UTILITY INTERFACE

TX TERR INTERFACE

(G.703 installed )

RTS TX-IF CNTRL

STRUCTURE:

RS-232 RS-422

V.35

G.703

OFF

E1 FRAMING

RX TERR

INTERFACE

RS-232 RS-422

V.35

G.703

(G.703 installed)

TX DATA PHASE

NORMAL

INVERT

RX DATA PHASE

NORMAL

INVERT

G.704

NONE

EE1 INSERT CRC

OFF

RX D&I overhead only

G.704

NONE

Key:

ACCESS TO

SUBMENU

Figure 3-19. Utility Interface Menu

CONDITIONAL OR

OPTION-DEPENDENT

Parameter Information

3–22 Rev. 2

SDM-300L Satellite Modem Operation

IDR BACKWARD

ALARM CONTROL

BW ALARM RX #4 BW ALARM RX #3 BW ALARM RX #2 BW ALARM RX #1

BW ALARM TX #4 BW ALARM TX #3 BW ALARM TX #2 BW ALARM TX #1

TX/RX IDR overhead only

IDR TX ESC TYPE

64K DATA

2-32K AUDIO

(TX IDR overhead only)

ASYNC TX TYPE

EIA-232

EIA-485 (2-WIRE) EIA-485 (4-WIRE)

TX ASYNC Overhead only

IDR RX ESC TYPE

64K DATA

2-32K AUDIO

(RX IDR overhead only)

ASYNC RX TYPE

EIA-232 EIA-485

TX ASYNC Overhead only

CTS DELAY

0 TO 60 SECONDS

Key:

ACCESS TO

SUBMENU

CONDITIONAL OR

OPTION-DEPENDENT

Parameter Information

Figure 3-19. Utility Interface Menu (Continued)

Rev. 2 3–23

Operation SDM-300L Satellite Modem

SDM300L "TYPE" VER: X.X.X

TIME: 12:00:00AM

DATE: 7/04/1976

Current time and date.

OPERATION MODE

DUPLEX TX ONLY RX ONLY

FUNCTION SELECT UTILITY

REMOTE BAUD RATE

bit/s

BAUD: 150 2400

300 4800 600 9600 1200 19200

Parity: Odd, Even, or None

YEAR DISPLAY

2 - Digit 4 - Digit

UTILITY

SYSTEM

REMOTE ADDRESS

TEST MODE STATUS

RS CORR OFF INTRFC LOOP BACK B-BAND LOOP BACK

CARRIER MODE RX 2047 PATTERN TX 2047 PATTERN

IF LOOP BACK (TX/RX L-Band

1 to 255

Modem only)

REMOTE TYPE

EIA-232 EIA-485 (2-Wire) EIA-485 (4-Wire)

LAMP TEST ??

Press <ENTER>

SELF TEST

Off

Auto

Run

TX/RX L-Band Modem only

Key:

ACCESS TO

SUBMENU

CONDITIONAL OR

OPTION-DEPENDENT

Parameter Information

Figure 3-20. Utility System Menu

3–24 Rev. 2

SDM-300L Satellite Modem Operation

M&C Firmware

FW/NNNNNN - DDR

M&C FIRMWARE

MM/DD/YYYY

EXT AGC MIN PWR

0.0 to 10.0 VOLTS

BOOT FIRMWARE

FW/NNNNNN - DDR

BOOT FIRMWARE

MM/DD/YYYY

BOOT FIRMWARE

VER: X.X.X

EXT AGC MAX PWR

0.0 to 10.0 VOLTS

FPGA FIRMWARE

FW/NNNNNNR

FPGA FIRMWARE

MM/DD/YYYY

MASTER RESET

HARD/SOFT

Key:

SUBMENU

ACCESS TO

CONDITIONAL OR

OPTION-DEPENDENT

DISPLAY CONTRAST

0 to 100

Parameter Information

Figure 3-20. Utility System Menu (Continued)

Rev. 2 3–25

Operation SDM-300L Satellite Modem

SDM300L "TYPE"

VER: X.X.X

CR:_____ DR:_____ KB

One-time displayed menu

to allow user to enter

code/data rates for

single rate modes.

CARD #1 TYPE

OVERHEAD 01

MUX 01

FLEX MUX 01

NOT INSTALLED

FUNCTION SELECT

UTILITY

MODEM TYPE

CUSTOM

D&I

ASYNC

IDR

IBS

EFD

CARD #2 TYPE

REED-SOLOMON 02

REE-SOLOMON 03

INSTALLED

UTILITY

MODEM TYPE

REV EMULATION

CURRENT VERSION

FUNCTIONAL X = 1 TO X

CARD #3 TYPE

REED-SOLOMON 02 REED-SOLOMON 03

NOT INSTALLED

MODEM OPTIONS

HIGH POWER

HIGH STABILITY

ASLT

VITERBI SEQUENTIAL SINGLE RATE

LOW RATE VAR FULL RATE VAR

CARD #1 PCB CARD #2 PCB

CARD #3 PCB

8PSK 2/3 TX ONLY

RX ONLY

OQPSK

TX/RF L-BAND

Key:

ACCESS TO

SUBMENU

CONDITIONAL OR

OPTION-DEPENDENT

Parameter Information

Figure 3-21. Utility Modem Type Menu

3–26 Rev. 2

SDM-300L Satellite Modem Operation

CARD #1 OPTIONS

OVERHEAD LIST 01:

G.703

IBS

ASYNC/AUPC

D&I IDR

MUX LIST: 4 CHANNEL SYNC 8 CHANNEL SYNC

4 CHANNEL ASYNC 8 CHANNEL ASYNC

MODEM SERIAL #

123456789

CONFIGURATION

CODE MODE

SUPPLIED CODE

(Only if installed)

CARD #2 OPTIONS

REED-SOLOMON LIST 02 REED-SOLOMON LIST 03

INTELSAT

CARD #1 SERIAL NO.

123456789

(Card #1 Installed Only)

CONFIGURATION

CODE CARD #1

SUPPLIED CODE

(Only if installed)

CARD #3 OPTIONS

REED-SOLOMON LIST 02 REED-SOLOMON LIST 03

INTELSAT

CARD #2 SERIAL NO.

123456789

(Card #2 Installed Only)

CONFIGURATION

CODE CARD #2

SUPPLIED CODE

(Only if installed)

LOCAL MODEM

AUPC

OFF (with TX/RX ASYNC

overhead only)

CARD #3 SERIAL NO.

123456789

(Card #3 Installed Only)

CONFIGURATION

CODE CARD #3

SUPPLIED CODE

(Only if installed)

Key:

ACCESS TO

SUBMENU

CONDITIONAL OR

OPTION-DEPENDENT

Parameter Information

Figure 3-21. Utility Modem Type Menu (Continued)

Rev. 2 3–27

Operation SDM-300L Satellite Modem

SDM300L "TYPE'

VER: X.X.X

FUNCTION SELECT

UTILITY

FACTORY SETUP

UTILITY FACTORY

SETUP

Key:

ACCESS TO

SUBMENU

CONDITIONAL OR

OPTION-DEPENDENT

Parameter Information

FACTORY SETTING

ONLY

Figure 3-22. Utility Factory Setup Menu

3–28 Rev. 2

SDM-300L Satellite Modem Operation

3.3 SDM-300L Custom Modem Defaults

Refer to Table 3-2 for custom modem defaults.

Note:

The following parameter do not revert to default settings after a hard reset:

Address/Parity/Baud Rate

•

Remote Type

•

EXT AGC MIN Power

•

Table 3-2. SDM-300L Custom Modem Defaults

Data Rate A Date Rate A TX Rate A 64 kbit/s, QPSK 1/2 RX Rate A 64 kbit/s, QPSK 1/2 TX Rate B 128 kbit/s, QPSK 1/2 RX Rate B 128 kbit/s, QPSK 1/2 TX Rate C 256 kbit/s, QPSK 1/2 RX Rate C 256 kbit/s, QPSK 1/2 TX Rate D 512 kbit/s, QPSK 1/2 RX Rate D 512 kbit/s, QPSK 1/2 TX Rate V 38.4 kbit/s, QPS K 1/2 RX Rate V 38.4 kbit/s, QPSK 1/2 IF Frequency (Non TX/RX) 70 MHz IF Frequency 1200 MHz IF Frequency (TX/RX) 1200 MHz RX Terminal Frequency 4200 MHz TX Terminal Frequency 5845 MHz Descrambler On IF Output Off Differential Encoder On Power Level (Non TX/RX) -10 dBm IF Loop Back Off Power Level (TX/RX) -10 dBm BER Threshold None Scrambler On Sweep Center 0 Hz Differential Enco der On Sweep Range 60000 Hz Carrier Mode Normal-Modulated Reacquisition 0 seconds Modem Reference Internal LNB Power Off ODU Power Off LNB Voltage 13 VDC ODU 10 MHz REF OFF LNB 10 MHz REF Off RS Encoder Off RS Decoder Off

TX Clock Source TX Terrestrial RX Coding Format AMI TX Clock Phase Auto Channel, Level (T X /RX ) -5 dBm EXT-CLK Frequency 1544 kHz Drop Format T1 Buffer Clock RX (Satellite) Insert Format T1 Buffer Size 384 bit/s Drop SAT Channel T e rr, others T-Slo t Terr Buffer Center Yes/No Insert SAT Channel Terr, other T-Slot Terr RX Clock Phase Normal ASYNC TX Baud 110 kbit/s B-Band Loopback Off ASYNC RX Baud 110 kbit/s Interface Loopback Off ASYNC TX Length 7 bit/s Loop Timing Off ASY N C RX L e ngth 7 bit/s TX Data Fault None ASYNC TX Stop 2 bits RX Data Fault None ASYNC RX Stop 2 bits TX 2047 Patter n Off ASYNC TX Pa r ity Even RX 2047 Pattern Off ASYNC RX Parity Even TX Coding For m at AMI

AUPC Enabled Off Target Eb/N0 6.0 dB Nominal Power -10.0 dB Tracking Rate 0.5 dB/min

Minimum Power -30.0 dBm Local CL Ac tio n Hold Maximum Power -5.0 dBm Remote CL Action Hold

Modulator Demodulator

Interface

Configuration Local AUPC

EXT AGC Max Power

•

Display Contrast

•

Rev. 2 3–29

Operation SDM-300L Satellite Modem

Table 3-2. SDM-300L Custom Modem Defaults (Continued)

Tributary Frequency #1 2048 kbi t/s Tributary #1 to #7 SYNC Tributary Frequency #2 to #7 256 kbit/s Tributary #8 ASYNC Tributary Inter f ace #1 and #8 RS422 Tributary Clock Data CLK:NRM

Tributary Inter f ace #2 to #7 RS232 Aggregate DR 2305 kbit/s

TX Chan # 1 Mode D&I Enable d RX Chan # 1 Mode D&I Enabled TX Chan # 1 DR 64.0 kbit/s RX Chan # 1 DR 64.0 kbit/s TX Chan # 2 Mode ADPCM Disabled RX Chan # 2 Mode ADPCM Disabled TX Chan # 3 Mode SYNC RS232 RX Chan # 3 Mo de SYNC RS232 TX Chan # 3 DR 64.0 kbit/s RX Chan # 3 DR 64.0 kbit/s TX Chan # 3 Phase CLK: NRM DATA: NRM RX Chan # 3 Phase CLK: NRM DATA: NRM TX Chan # 4 Mode ASYNC RS485 RX Chan # 4 Mode ASYNC RS485 TX Chan # 4 DR 9.6 kbit/s RX Chan # 4 DR 9.6 kbit/s TX Chan # 4 Phase CLK: NRM DATA: NRM RX Chan # 4 Phase CLK: NRM DATA: NRM

RAW BER 2.4 E-3 Buffer Fill 50% Corrected BER 4.0 E-3 Frame Errors n.n E-e Eb/N0 16.0 dB LNB Current 0 mA

Receive Signal -45 dB ODU Current 0 mA Sweep Frequency 0 Hz

AUPC Enable O f f TX 2047 Patter n Off B-Band Loopback Off 2047 Errors n.n E-e

Modulator Demodulator

Data Rate A Date Rate A TX Rate A 64 kbit/s, QPSK 1/2 RX Rate A 64 kbit/s, QPSK 1/2 TX Rate B 128 kbit/s, QPSK 1/2 RX Rate B 128 kbit/s, QPSK 1/2 TX Rate C 256 kbit/s, QPSK 1/2 RX Rate C 256 kbit/s, QPSK 1/2 TX Rate D 512 kbit/s, QPSK 1/2 RX Rate D 512 kbit/s, QPSK 1/2 TX Rate V 38.4 kbit/s, QPSK 1/2 RX Rate V 38.4 kbit/s, QPSK 1/2 TX Terminal LO LO Freq of BUC RX Terminal LO LO Freq of BUC MOD Power Offset 0 dB Demodulator Type INTERNAL Open Modulator Ty pe INTELSAT Open Decoder Type Viterbi Encoder Type Viterbi RX BPSK Ordering Standard TX BPSK Ordering Standard DEMOD Spectrum Normal MOD Spectrum Normal RX-RS Interleave 8 deep TX-RS Interleave 8 deep RX-IESS-310 Mode Off TX-IESS-310 Mode Off LNB Alarm – Low 0 mA ODU Alarm – Low 0 mA LNB Alarm – High 500 mA ODU Alarm – High 2000 mA RX Symbol Rate 64 ksps TX Symbol Rate 64 Ksps

TX Overhead Type None Backward Alarm RX #4 On RX Overhead Ty pe None Backward Alarm RX #3 On TX Terr Interface RS422 Backward Alarm RX #2 On RX Terr Interface RS422 Backward Alarm RX #1 On Buffer Program Bits Backward Alarm TX #4 On Framing Structure T1 Framing Structure: G.704

E1 Framing Structur e: G.704 RTS TX-IF CNTRL Off Backward Alarm TX #2 On TX Data Phase Normal Backward Alarm TX #1 On RX Data Phase Normal ASYNC TX Type RS232 E1 Insert CRC On ASYNC RX Type RS232 IDR TX ESC Type 2-32k Audio IDR RX ESC Type 2-32k Audio CTS Delay 0 seconds

Configuration Mux

Data NRM

Configuration Flex Mux

Function Select Monitor

Function Select Remote AUPC

Utility

Utility Interface

Backward Alarm TX #3 On

3–30 Rev. 2

SDM-300L Satellite Modem Operation

Table 3-2. SDM-300L Custom Modem Defaults (Continued)

Time 12:00:00 AM Self Test Off Date 7/04/76 M&C Firmware FW/NNNNNN-DDR

Remote Baud Rate 9600 bit/s Boot Firmware FW/NNNNNN-DDR

Remote Address 1 FPGA Firmware MM/DD/YYYY Remote Type RS485 (2-Wire) Displ ay Contrast 64 Operational Mode Duplex EXT AGC: Min Pwr 0 volts Year Display 2-Digit EXT AGC: Max Pwr 10 volts

Modem Type Custom Card #2 Reed-Solomon 02 Rev Emulation Current Card #3 Reed-Solomon 03 Card #1 Overhead 01 Local Modem A U P C Off

Utility System

MM/DD/YYYY

MM/DD/YYYY Version:

Utility Modem Typ e

Rev. 2 3–31

Operation SDM-300L Satellite Modem

3.4 Custom Operation

Note:

If the modem serves as the backup unit for a rack of modems having different hardware and FAST options, then the backup modem shall have all of the features and hardware found in the other modems.

Operating in Custom mode allows access to all front panels menus, including the Utility menus. The Custom operation mode is mainly used when the modem must function with no overhead in an open network application. For example, to use the modem in the IDR mode of operation with overhead (IESS308-2), the following steps are taken:

1. Select the IDR modem type, so that the modem loads the IDR default parameter.

2. Select the Custom modem type, which allows Access to the modulator and demodulator overhead type.

3. Select NONE for the overhead types.

A protection switch can make use of the Custom operation mode when the modem is configured as a backup modem. Because the backup modem is operating in Custom Mode, the switch can program all the backup modem parameters. Thus, the one backup modem can be made compatible with all of the various application types found in the rack.

3–32 Rev. 2

This appendix describes the options available for the SDM-300L.

A.1 FAST Accessible Options

Comtech EFData’s FAST system allows immediate implementation of different options through the user interface keypad. Some FAST options are available through the basic platform unit, while others require that the unit be equipped with optional hardware or that the hardware be installed in the field. Refer to Table A-1 for a listing of possible configurations.

The options available through the FAST architecture include:

ASYNC/AUPC

•

Viterbi Decoder

•

Sequential Decoder

•

Appendix A.

Asymmetrical loop timing G.703 operation Variable data rates

OPTIONS

Rev. 2 A–1

Options SDM-300L Satellite Modem

Table A-1. FAST Options and Required Configurations

Hardware

Basic Platform 300L FAST Options X X X X X X

FAST Options with Overhead Hardware FAST Options with Reed-Solomon Hardware

ow Variable Data Rate (up

Single Data Rate

Note:

The basic modem is shipped with either Sequential or Viterbi decoder. Optional: A unit can be shipped with both Viterbi and Sequential decoders.

A.1.1 FAST System Theory

FAST is an enhancement feature available only in Comtech EFData products, enabling on-location upgrade of the operating feature set—in the rack—without removing a modem from the setup. When service requirements change, the operator can upgrade the topology of the modem to meet those requirements within minutes after confirmation by Comtech EFData. This accelerated upgrade can be accomplished only because of FAST’s extensive use of programmable devices incorporating Comtech EFData-proprietary signal processing techniques. These techniques allow the use of a unique access code to enable configuration of the available hardware. The access code can be purchased at any time from Comtech EFData. Once obtained, the access code is loaded into the unit through the front panel keyboard or the rear remote port.

With the exclusive FAST technology, operators have maximum flexibility for enabling functions as they are required. FAST allows an operator to order a modem precisely tailored for the initial application, reducing risk and cost overruns during the application integration process.

o 512 M/bits)

igh Variable Data Rate

(up to 4..375 M/bits )

(Note)

Viterbi Decoder

(Note)

Sequential Decoder

Asyemmetrical Loop Timing

OQPSK

G.703

eed-Solomon Codec

ASYNC/AUPC Overhead

A–2 Rev. 2

SDM-300L Satellite Modem Options

A.1.2 Implementation

FAST is factory-implemented in the modem at the time of order. Hardware options for basic modems can be ordered and installed either at the factory or in the field. The operator can select options that can be activated easily in the field, depending on the current hardware configuration of the modem.

A.1.2.1 Activation Procedure

1. Obtain Modem serial number as follows:

a. Press [CLEAR] to return to the Main menu.

b. Use [←] and [→] to select Function Select menu.

c. Press [ENTER].

d. Use [←] and [→] to select Utility Modem Type menu.

e. Press [ENTER].

f. Use [←] and [→] to select Modem Serial # menu.

g. Record serial number:

2. Select desired features as follows:

a. Use [←] and [→] to select Modem Options menu.

b. Press [ENTER].

c. Scroll through the Modem Options and check off all features that display a

“+” sign as follows:

HIGH PO WER [ ] FULL RATE VA R [ ] HIGH STABILIT Y [ ] CARD #1 PC B [ ] ASLT [ ] CARD # 2 PC B [ ] VITERB I [ ] CARD #3 PC B [ ] SEQUENTIAL [ ] 8PSK 2/3 [ ] SINGLE RATE [ ] RX Only [ ] LOW RAT E VAR [ ] OQPSK [ ]

Notes:

1. If the menu displays a “0”, the unit will need to be returned to the manufacturer for the desired hardware upgrade.

2. If the unit displays an “X,” the unit can be upgraded in the field.

3. If the unit displays a “+”, the feature is installed.

4. If the unit displays a “-,” the feature is FAST accessible.

Rev. 2 A–3

Options SDM-300L Satellite Modem

d. Press [CLEAR].

e. Use [←] and [→] to select CARD #1 (Overhead Card) menu.

f. Record Card #1 serial number, if displayed:

g. Use [←] and [→] select CARD #2 (Reed-Solomon Card) menu.

h. Record Card #2 serial number, if displayed:

i. Press [CLEAR].

3. Contact an Comtech EFData sales representative to order features.

4. Comtech EFData Customer Support personnel will verify the order and provide an invoice and instructions.

5. Enter access codes as follows:

a. Press [CLEAR] to return to the Main menu.

b. Use [←] and [→] to select Function Select Utility menu.

c. Press [ENTER].

d. Use [←] and [→] to select Utility Modem Type menu.

e. Press [ENTER].

f. Use [←] and [→] to select Configuration Code Modem menu.

g. Press [ENTER].

h. Menu appears as follows:

AAAAAAAAAA AAAAAAAAAA

i. Enter the access code.

Use the following example for practice:

Use [↑][↓] to input: 5CBB397F4D Press [→]. Use [↑][↓] to input: 773B285AA5 Press [ENTER]. Display exhibit “WRONG CODE ENTERED”.

A–4 Rev. 2

SDM-300L Satellite Modem Options

6. If properly re-initialized, the display exhibits “REINITIALIZED” and reset.

7. Check upgrade as follows:

a. Press [CLEAR] to return to the Main menu.

b. Use [←] and [→] to select Function Select Utility menu.

c. Press [ENTER].

d. Use [←] and [→] to select Utility Modem Type menu.

e. Press [ENTER].

f. Use [←] and [→] to select Modem Options menu.

g. Press [ENTER].

h. Use [←] and [→] to scroll through features. Visually check selected features

for a “+” sign. If a “+” sign is evident, the upgrade is completed.

8. If upgrade is incorrect, the menu display will exhibit “WRONG CODE ENTERED.” Repeat procedures. Contact Comtech EFData Customer Support personnel for further instructions, if the error message remains.

Rev. 2 A–5

Options SDM-300L Satellite Modem

A.2 Options

A summary of the options available for the unit is provided in Table A-2. Contact Comtech EFData Customer Support for the availabilty status of the the desired option(s).

Table A-2. Options Summary

Option

Single Data/Code Rate Yes Yes FAST Low Rate Variable Full Rate Variable QPSK maximum is 4.375 maximum Yes Yes FAST OQPSK Yes Yes FAST TX = 70 / 140 MHz, RX = L-Band Yes Not Av ail able Factory TX = L-Band, RX = L - Band Not Available Yes Factory RX Only, L-Band Not Available Yes Factory TX = 50Ω IF Impedance TX = 75Ω IF Impedance Sequential or V ite r bi Co dec Mode m can be supplied with either:

TX Reed-Solomon Co dec Concatenates with Viterbi o r S e quential Yes Yes User RX Reed-Solomo n Co dec Concatenates w ith V ite r bi o r S equential Yes Yes User Asymmetrical Loop Ti m ing (SCT) Yes Yes FAST Asynchronous (Async/AUPC) I nter f ace

with 50 pin D Connector High Stability Re ference. Inter nal s tabil ity

= ± 0.02 PPM, with t he ability to drive out the external reference connector

G.703 Interface. Note, For BNC o r 15 pin D interface see U B - 530 breakout panels .

37-Pin Female D Connector EIA-422/EIA-449 Interface and

25-Pin Female D Connector EIA-530 (RS-422), EIA-232 and V.35 Yes Yes User 34-Pin Female V.35 “Winchester” Connector with V.35 Yes Yes User 50-Pin Female D Connector for use

Overhead card.

Without Primary Powe r: A uto-ranging AC 85 t o

264 VAC

-30 to -5 dBm IF output (low power) Output 2nd Harmonics:

8PSK, 2/3 rate, IESS-310 Requires Viterbi and Reed- S olo m o n

8PSK, 2/3 rate, EFD Mode Requires Viterbi Code c Not Available Not Available User IBS and IDR Interface Requires Overhead Card Not Available Not Available User Drop & Insert Interface Requires Overhead Card Not Available Not Available User Flex Mux Not Available Not Available User Mux Available in: 4-Channel

Primary Powe r: 48 VDC Yes (Future) Yes (Future) Factory ODU DC Power: 15V, 24V, 28V or 48V.

Primary input = AC Only

Description & Comm en ts

512 Kbit/s

≤

Yes Standard Factory Standard Not Available Factory

Viterbi, Sequential or both

Requires Over he ad Car d. Includes automatic uplink po wer control (AUPC)

Requires Over head Card with 50 pin D Connector

Mil-188-114

Inlcudes EIA-422, EIA-232, and V.35 Use with redundancy switches Yes Yes Factory

45 dBc at data rate s < 64 kbit/s

50 dBc at data rate s ≥ 64 kbit/s

Codec

8-Channel

3 Amps maximum o r le s s de pending upon power supply .

Future Or Not Available

SDM-300L1 SDM-300L2

Yes Yes FAST

Yes Yes User

Yes

(Optional)

Yes Yes User

Not Available Not Available Factory

Not Available Not Available User

Not Available Yes

Standard

(Future)

Install

Option

Factory

A–6 Rev. 2

METRIC CONVERSIONS

Units of Length

Unit

1 centimeter — 0. 3937 0.03281 0.01094

1 inch 2.540 — 0.08333 0.2778

1 foot 30.480 12.0 — 0.3333

1 yard 91. 44 36.0 3.0 —

Centimeter

Inch

Foot

Yard

Mile

6.214 x 10

1.578 x 10

1.893 x 10

5.679 x 10

Meter

-6

-5

-4

0.01 — —

0.254 — 25.4

0.3048 — —

0.9144 — —

Kilometer Millimeter

1 meter 100.0 39.37 3.281 1.094

1 mile

1 mm — 0.03937 — — — — — —

1 kilometer — — — — 0.621 — — —

1.609 x 10

6.336 x 104 5.280 x 103 1.760 x 103

6.214 x 10

-4

—

— — —

1.609 x 103

1.609 —

Temperature Conversions

Ounce

Troy

Formulas

C = (F - 32) * 0.555

F = (C * 1.8) + 32

Pound

Avoir.

Pound

Troy

Kilogram

Unit

32° Fahrenheit

212° Fahrenheit

-459.6° Fahrenheit

°°°°

Fahrenheit

—

°°°°

Centigrade

(water freezes)

100

(water boils)

273.1

(absolute 0)

Units of Weight

Unit

1 gram — 0.03527 0.03215 0.002205 0.002679 0.001

Gram

Ounce

Avoirdupois

1 oz. avoir. 28.35 — 0. 9115 0.0625 0.07595 0.02835

1 oz. troy 31.10 1.097 — 0.06857 0.08333 0.03110

1 lb. avoir. 453.6 16.0 14.58 — 1.215 0.4536

1 lb. Troy 373.2 13.17 12.0 0.8229 — 0.3732

1 kilogram

1.0 x 10

35.27 32.15 2.205 2.679 —

2114

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Comtech EF Data SDM-300L User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Customer Support

Table of Contents

Overview of Changes to Previous Edition

About this Manual

Related Documents

Conventions and References

Reporting Comments or Suggestions Concerning this Manual

European Low Voltage Directive

Warranty Policy

Limitations of Warranty

Exclusive Remedies

Disclaimer

1.1.1 Available Options

1.1.3 Compatibility

Installation SDM-300L Satellite Modem

2.2.1 IDU Installation (Optional)

2.3 External Modem Connections

RF Input Connector (CP3)

3.1.2 Front Panel Keypad

3.2.1 Code Rate and Data Rate Range

3.2.2 Front Panel Menu

3.3 SDM-300L Custom Modem Defaults