Comtech EF Data SNM-1001L User manual

Part Number MN/SNM1001L.IOM Revision 1
SNM-1001L
Satellite Modem
Installation and Operation Manual

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Errata A
Comtech EF Data Documentation Update
Subject: Changes to power consumption and fusing information
Date: May 30, 2003
Document: SNM-1001L Satellite Modem Installation and Operation Manual,
Rev. 1, dated March 17, 2003
Part Number: MN/SNM1001L.EA1
Collating Instructions: Attach this page to page xii
Comments:
The following changes provide updated information for page xii and Section 3.2.9. This
information will be incorporated into the next revision.
Change Specifics:
ELECTRICAL SAFETY
The SNM-1001L Satellite Modem has been shown to comply with the following safety standard:
• EN 60950: Safety of Information Technology Equipment, including electrical business
machines.
The equipment is rated for operation over the range 85 to 264 volts AC. It has a maximum
power consumption of 55 watts without BUC power supply. Input power increases to 175W
with 100W, 24V BUC power supply at maximum load. Input power increases to 230W with
150W, 48V BUC power supply at maximum load.
FUSES
The SNM-1001L Satellite Modem is fitted with two fuses, one each for line and neutral
connections. These are contained within the body of the IEC power connector, behind a small
plastic flap.
• Use T3.15A, 20mm fuses.
IMPORTANT
For continued operator safety, always replace the fuses with the
correct type and rating.

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3.2.9 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 55W maximum, 40W typical
without BUC power supply.
Input Voltage 90 to 132 or 175 to 264 VAC
Unit switches ranges automatically
Connector Type I.E.C
Fuse Protection T3.15A 20 mm type fuses
Line and neutral fusing

Copyright © Comtech EF Data, 2000, 2001, 2002. All rights
reserved. Printed in the USA.
Comtech EF Data, 2114 West 7th Street, Tempe,
Arizona 85281 USA, 480.333.2200 FAX: [phone]
SNM-1001L
Satellite Modem
Installation and Operation Manual
Part Number MN/SNM1001A.IOM
Revision 1
March 17, 2003
Comtech EF Data is an ISO 9001
Registered Company.
MULTIMEDIA INTEGRATED DIGITAL ACCESS SYSTEM

i
Customer Support
Contact the Comtech EF Data 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 EF Data
Attention: Customer Support Department
2114 West 7th Street
Tempe, Arizona 85281 USA
480.333.2200 (Main Comtech EF Data Number)
480.333.4357 (Customer Support Desk)
480.333.2161 FAX
or, E-Mail can be sent to the Customer Support Department at:
[email protected]
Contact us via the web at www.comtechefdata.com.
To return a Comtech EF Data product (in-warranty and out-of-warranty) for repair or
replacement:
1. Request a Return Material Authorization (RMA) number from the Comtech EF
Data Customer Support Department.
Be prepared to supply the Customer Support representative with the model
number, serial number, and a description of the problem.
2. To ensure that the product is not damaged during shipping, pack the product in
its original shipping carton/packaging.
3. Ship the product back to Comtech EF Data. (Shipping charges should be
prepaid.)
For more information regarding the warranty policies, see p.xviii.

ii
Table of Contents
Customer Support........................................................................................................................................i
About this Manual ...................................................................................................................................xiii
Electrical Safety ........................................................................................................................................ xv
Telecommunications Terminal Equipment Directive...........................................................................xvi
EMC (Electromagnetic Compatibility).................................................................................................xvii
Warranty Policy .....................................................................................................................................xviii
CHAPTER 1. INTRODUCTION .............................................................................................1–1
1.1 Overview ...................................................................................................................................... 1–1
1.2 Options Summary ....................................................................................................................... 1–2
1.3 Comtech EF Data Part Numbers............................................................................................... 1–3
1.4 FAST Accessible Options ........................................................................................................... 1–4
1.5 Compatibility............................................................................................................................... 1–5
1.6 Description of the Modulator..................................................................................................... 1–5
1.6.1 Overview............................................................................................................................... 1–5
1.6.2 Functional Description.......................................................................................................... 1–5
1.6.3 Description of Modulation Types ......................................................................................... 1–6
1.7 Description of the Demodulator................................................................................................. 1–9
1.7.1 Overview............................................................................................................................... 1–9
1.7.2 Functional Description........................................................................................................ 1–10
1.8 Description of Monitor & Control........................................................................................... 1–11

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1.8.1 Overview............................................................................................................................. 1–11
1.8.2 Functional Description........................................................................................................ 1–12
1.9 Dimensional Envelope .............................................................................................................. 1–14
1.10 New in this Release.................................................................................................................... 1–15
CHAPTER 2. INSTALLATION/ UPGRADES ........................................................................2–1
2.1 Unpacking.................................................................................................................................... 2–1
2.2 Installation ................................................................................................................................... 2–2
2.2.1 Modem Installation (Optional).............................................................................................. 2–2
2.3 Software and Hardware Installation/Upgrades ....................................................................... 2–4
2.3.1 Reed-Solomon PCB .............................................................................................................. 2–4
2.3.2 Turbo Codec Installation.......................................................................................................2–6
2.4 Data I/O Interface Connector (J8) Removal/Installation........................................................ 2–8
2.5 Hardware Upgrades.................................................................................................................... 2–9
2.5.1 Main PCB Firmware Chips................................................................................................... 2–9
2.6 Flash Upgrading........................................................................................................................ 2–11
2.6.1 Downloading Flash Updates from the Web ........................................................................2–12
CHAPTER 3. CONNECTOR PINOUTS.................................................................................3–1
3.1 Connector Overview ................................................................................................................... 3–1
3.2 Connector Description................................................................................................................ 3–3
3.2.1 Remote Connector and Pinouts (J6)...................................................................................... 3–3
3.2.2 Fault Connector and Pinouts (J7).......................................................................................... 3–4
3.2.3 Data I/O Interface Connector (J8)......................................................................................... 3–5
3.2.4 Auxiliary 1 Connector and Pinouts (J9)................................................................................ 3–9
3.2.5 Alarms Connector and Pinouts (J10) .................................................................................. 3–10
3.2.6 RF Output Connector (CP1) ............................................................................................... 3–10
3.2.7 External Reference (CP2) ................................................................................................... 3–10
3.2.8 RF Input Connector (CP3) .................................................................................................. 3–10
3.2.9 AC Power Connector .......................................................................................................... 3–11
3.2.10 Ground Connector (GND) ..................................................................................................3–11
CHAPTER 4. FRONT PANEL OPERATION .........................................................................4–1
4.1 Front Panel .................................................................................................................................. 4–1
4.1.1 LED Indicators The 10 LEDs on the front panel indicate: •General modem summary faults
•Status •Alarms The indicators are defined in Table 4-1 as follows:............................................ 4–2
4.1.2 Front Panel Keypad............................................................................................................... 4–3

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4.2 Menu System ............................................................................................................................... 4–4
4.2.1 Revision Emulation............................................................................................................... 4–5
4.2.2 Menu Tree............................................................................................................................. 4–6
4.3 OPENING SCREEN................................................................................................................... 4–7
4.3.1 FUNCTION SELECT: CONFIGURATION ........................................................................ 4–7
4.3.2 FUNCTION SELECT: MONITOR .................................................................................... 4–39
4.3.3 FUNCTION SELECT: FAULTS/ALARMS...................................................................... 4–46
4.3.4 FUNCTION SELECT: STORED FLTS/ALMS................................................................. 4–50
4.3.5 FUNCTION SELECT: REMOTE AUPC (CONDITIONAL)......................................... 4–55
4.3.6 FUNCTION SELECT: UTILITY ....................................................................................... 4–58
FUNCTION SELECT:UTILITY: DEMODULATOR: RX TERMINAL LO ................................... 4–70
FUNCTION SELECT: UTILITY: INTERFACE: BUFFER PROGRAM .....................................4–76
FUNCTION SELECT: UTILITY: OUTDOOR UNIT: ODU FSK ADDRESS (CONDITIONAL) .4–
78
4.4 Custom Modem Defaults .......................................................................................................... 4–97
CHAPTER 5. MODEM TYPE...............................................................................................5–1
5.1 Modem Type................................................................................................................................ 5–1
5.1.1 AUPC Operation (with Reed-Solomon) ............................................................................... 5–2
5.1.2 Closed Network Operation (Comtech EF Data) ................................................................... 5–2
5.2 Custom Operation....................................................................................................................... 5–3
5.3 Reed-Solomon Modes ................................................................................................................. 5–4
CHAPTER 6. CLOCKING AND RX BUFFERING SETTINGS.............................................6–1
6.1 Clocking Options......................................................................................................................... 6–1
6.1.1 EIA-232, EIA-422, or V.35 Master/Master .......................................................................... 6–1
6.1.2 EIA-232, EIA-422, or V.35 Master/Slave ............................................................................ 6–1
6.2 Buffering ...................................................................................................................................... 6–2
6.2.1 Buffer Size ............................................................................................................................ 6–2
6.3 Doppler......................................................................................................................................... 6–7
6.4 Plesiochronous............................................................................................................................. 6–8
6.5 Frame/Multiframe Length ......................................................................................................... 6–9
6.5.1 Multiples of the Frame Length.............................................................................................. 6–9
6.5.2 Total Buffer Length .............................................................................................................. 6–9
6.5.3 Converting Between Bits and Seconds ................................................................................. 6–9
CHAPTER 7. FORWARD ERROR CORRECTION (FEC) ....................................................7–1

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7.1 Introduction................................................................................................................................. 7–1
7.2 Coding .......................................................................................................................................... 7–2
7.3 Turbo Product Codec (Hardware Option) ............................................................................... 7–2
7.3.1 Introduction........................................................................................................................... 7–2
7.3.2 Mod/Demod Processing Delay .............................................................................................7–3
7.3.3 Comparison of all TPC Modes.............................................................................................. 7–4
7.4 Uncoded Operation (No FEC) ...................................................................................................7–5
CHAPTER 8. SYSTEM CHECKOUT.....................................................................................8–1
8.1 System Checkout......................................................................................................................... 8–1
8.1.1 Interface Checkout ................................................................................................................ 8–2
8.1.2 Modulator Checkout ............................................................................................................. 8–3
8.1.3 Demodulator Checkout ........................................................................................................... 8–5
CHAPTER 9. FAULT ISOLATION ........................................................................................9–1
9.1 Fault Isolation.............................................................................................................................. 9–1
9.1.1 System Faults/Alarms ........................................................................................................... 9–2
9.1.2 Faults/Alarms Display........................................................................................................... 9–2
9.1.3 Faults/Alarms Analysis ......................................................................................................... 9–2
CHAPTER 10. AUTOMATIC UPLINK POWER CONTROL.................................................10–1
10.1 AUPC ......................................................................................................................................... 10–1
10.2 Modes of AUPC Location.........................................................................................................10–3
10.2.1 AUPC – Between Two Modems......................................................................................... 10–4
10.2.2 Self-Monitoring Local Modem AUPC Control .................................................................. 10–5
10.2.3 MUX Operation .................................................................................................................. 10–6
10.2.4 DEMUX Operation ............................................................................................................. 10–6
10.2.5 Buffer Operation ................................................................................................................. 10–6
10.2.6 Loop Timing Operation ...................................................................................................... 10–7
10.2.7 Baseband Loopback Operation ........................................................................................... 10–7
10.2.8 Front Panel Operation ......................................................................................................... 10–7
CHAPTER 11. ASYMMETRICAL LOOP TIMING .................................................................11–1
11.1 Asymmetrical Loop Timing .....................................................................................................11–1
CHAPTER 12. FULLY ACCESIBLE SYSTEM TOPOLOGY (FAST)...................................12–1
12.1 FAST System Theory................................................................................................................ 12–1
12.1.1 Implementation ................................................................................................................... 12–1