Sencore ASM 988A User Manual

ASM 988A USER’S MANUAL
3200 Sencore Drive, Sioux Falls, SD. 57107
1-800-SENCORE
Form 7270
Your ASM 988A is a delicate piece of equipment and needs to be serviced and repaired by SENCORE. For support and service information please address all your calls or mail to:
SENCORE Inc. 3200 Sencore Drive Sioux Falls, S.D. 57107 USA
Tel: (605)-339-0100 Fax: (605)-339-0432 WEB site: SENCORE.COM EMAIL: mail@sencore.com
Copyright Sencore Inc.
October 2002
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TABLE OF CONTENTS
UNIT DESCRIPTION............................................................................................................1
FEATURES ......................................................................... 1
User Interface and Remote Control................................................. 1
Configurable Parameters .......................................................... 1
Monitored Parameters............................................................. 1
FRONT PANEL LAYOUT ................................................................ 2
BACK PANEL LAYOUT................................................................. 2
SPECIFICATIONS ................................................................... 3
8PSK Modulation Parameters ....................................................... 3
QPSK Modulation Parameters ....................................................... 3
ADVANCED QPSK Modulation Parameters ............................................... 3
16QAM Modulation Parameters ...................................................... 3
IF Output Specifications......................................................... 4
General Specifications........................................................... 4
UNIT QUICK SETUP.................................................................. 5
Unpacking and Installation ....................................................... 5
Connecting to the Unit........................................................... 5
UNIT OPERATION ...............................................................................................................6
Turning the Unit On............................................................... 6
Configuring the Unit .............................................................. 6
INPUT SOURCE ..................................................................... 7
PN-23 .......................................................................... 7
Inv PN-23....................................................................... 7
M2P source clock ................................................................ 7
M2P Sink Clock .................................................................. 8
DVB-SPI ........................................................................ 8
ASI Sink Clo ck.................................................................. 8
DVB-ASI ........................................................................ 8
MODULATION FORMAT................................................................. 9
IF FREQUENCY ..................................................................... 9
SYMBOL RATE (SPS)................................................................. 9
PAYLOAD RATE (bits/sec) ........................................................... 9
OUTPUT LEVEL .................................................................... 10
SPECTRUM ........................................................................ 10
ALPHA (Channel Rolloff) .......................................................... 10
CW TEST MODE .................................................................... 10
IF OUTPUT MUTED.................................................................. 11
DELETE SYNC BYTE................................................................. 11
SYSTEM PARAMETERS................................................................ 11
Setting Date ................................................................... 11
Display of system information ................................................... 12
IP Set ........................................................................ 12
Mute on Startup.................................................................. 12
FAULT SETTINGS .................................................................. 13
Reset Fault History Indicator ................................................... 13
Fault Log...................................................................... 13
Relay 1 Settings ............................................................... 13
Relay 2 Settings ............................................................... 14
Relay 3 Settings ............................................................... 14
VIEW FAULTS ..................................................................... 14
RESET SYSTEM .................................................................... 14
SNMP (SIMPLE NETWORK MANAGEMENT PROTOCOL).......................................... 15
LED INDICATORS .................................................................. 16
Status Indicators (3)........................................................... 16
Alarm Indicators (4)............................................................ 16
UNIT MAINTENANCE.......................................................................................................17
SERVICING THE UNIT ............................................................... 17
FAN FILTER CLEANING.............................................................. 17
APPENDIX A: CABLE PINOUTS ......................................................................................18
M2P Transport Stream Input Port................................................... 18
DVB-SPI Transport Stream Input Port ............................................... 19
Alarm Relay Output Port .......................................................... 20
APPENDIX B: SOFTWARE TREE ....................................................................................21
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ASM 988A – Manual
UNIT DESCRIPTION
The ASM 988A is a satellite modulator. This unit uses an advanced coding in the FEC layer to operate near Shannon’s theoretical limit of bandwidth efficiency. This unit accepts a M2P, DVB-SPI, DVB-ASI input transport stream and produces up to a 30 Mbaud modulated signal agile about 70 MHz.
FEATURES
User Interface and Remote Control
Front Panel access (Vacuum-Fluorescent Display and Keypad) to modes, parameters
and status information.
RS232, and 10BaseT Ethernet connections for configuration, monitoring and control.
Relay contact outputs for fault monitoring and automated redundancy switch control.
Configurable Parameters
8PSK FEC Rates: 2/3, 3/4 (2.05), 3/4 (2.1), 5/6, 8/9
TURBO QPSK FEC Rates: 1/4, 1/2, 3/4
16 QAM FEC Rates: 3/4
DVB-QPSK FEC Rates: 1/2, 2/3, 3/4, 5/6, 7/8
DSS-QPSK FEC Rates: 1/2, 2/3, 6/7
Output Power Attenuation: -5 to –20 dBm
Input Mode: M2P w/ internal clock, M2P w/ external clock, DVB-SPI, DVB-ASI
w/int clock, DVB-ASI w/ext clock
Test Modes: PN-23, Inverted PN-23, Inverted PN-23 w/o Sync Byte
Inpu t Levels: RS422, LVDS
Input Rate: 0.52 to 85 Mbps (Depending of the modulation modes)
Modulation Modes 8PSK, 16-QAM, Advanced QPSK, QPSK-DVB, DSS QPSK
Symbol Rate: 0.256 to 30 MSps, depending on the modulation modes
Excess Bandwidth (alpha): 0.10 – 0.50 with 0.01 resolution
Spectral Inversion: on/off
Output Mute: on/off
Monitored Parameters
Input Activity
Supply Voltages
Temperature
Fan Operation
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ASM 988A – Manual
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5
1234 5 6 12438
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FRONT PANEL LAYOUT
1. Fan Intake with Removable Filter
2. Vacuum-Fluorescent Display (2 lines x 18 characters)
3. Keypad
4. Status LEDs
5. Alarm LEDs
6. Modulator Test Output –20 dB Attenuated Signal Strength (75 Terminated)
BACK PANEL LAYOUT
1. DVB-SPI Loopback Output. Available when ASI or M2P is used for input
2. DVB-SPI Input
3. M2P Input
4. DVB-ASI Input
5. Bit Clock Output. This can be used to control the rate of a multiplexer or an encoder.
6. External 10 MHz Reference Input
7. Fault Alarm Output- Relay output
8. Modulator IF Output (75Ω Terminated)
9. Diagnostic RS232 Serial Port
10. Ethernet Port
11. 110/220 VAC Power Input and ON/OFF switch
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ASM 988A – Manual
SPECIFICATIONS
8PSK Modulation Parameters
FEC ra te FEC 2/3 FEC ¾-I FEC ¾-II FEC 5/6 FEC 8/9
Bit rate in
Mbits/s
Baud rate in
Mbauds
Note: FEC ¾-I represents 2.1 bits/ symbol s and FEC ¾-II represents 2.05 bits/ symbols
Excess Bandwidth (alpha): 0.1 to 0.5 with 0.01 Resolution
Spectral Inversion: on/off
QPSK Modulation Parameters
FEC Code Rates: 1/2, 2/3, 3/4, 5/6, 7/8.
FEC Modes: As per ETSI EN 300 421 V1.1.2 (DVB)
Symbol Rate: 0.256 MSps to 30 MSps
Excess Bandwidth (alpha): 0.1 to 0.5 with 0.01 Resolution
Spectral Inversion: on/off
ADVANCED QPSK Modulation Parameters
FEC Code Rates: 1/4, 1/2, 3/4.
FEC Modes: Turbo Code
Symbol Rate: 0.256 MSps to 30 MSps
Excess Bandwidth (alpha): 0.1 to 0.5 with 0.01 Resolution
16QAM Modulation Parameters
FEC Rate: 3/4
FEC Mode: Turbo code
Symbol Rate: 0.256 MSps to 30 MSps
Excess Bandwidth (alpha): 0.1 to 0.5 with 0.01 Resolution
DSS QPSK Modulation Parameters:
FEC Rate: 1/2, 2/3, 6/7 FEC Mode
Symbol Rate: 0.256 MSps to 30 MSps
Excess Bandwidth (alpha): 0.1 to 0.5 with 0.01 Resolution
0.52 to 57.1 0.55 to 62.8 0.5 to 61.2 .59 to 68.5 0.61 to 71.4
0.256 to 30 0.256 to 30 0.256 to 30 0.256 to 30 0.256 to 30
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ASM 988A – Manual
IF Output Specifications
Center Frequency: 70MHz
Agility: +/- 20MHz
IF Step Size: 1Hz
Power Attenuation: 5 to –20 dBm
Power Accuracy: 1 dB
Phase Noise:
@ 100Hz, -71 dBc @ 1 kHz, -81 dBc @ 10 kHz, -91 dBc @ 100 kHz, -101 dBc @ 1 MHz, -111 dBc
Impedance: 75
General Specifications
Line Power: 100 – 120/200 - 240 VAC, 60/50 Hz, 200 Watts
Operating Temperature: 0 to 50° C
Operating Humidity: < 95% non-condensing
Pollution Degree 2
Installation Category II
Weight: 12 lbs
Dimensions: 19” W x 19” D x 1.75” H (1U rack mount chassis)
Warning: Changes or modifications to this unit not expressly approved by SENCORE could void the user’s authority to operate the equipment.
Note: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. Operation of this equipment in residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.
Shielded cables must be used with this unit to ensure compliance with the Class A FCC limits.
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ASM 988A – Manual
UNIT QUICK SETUP
Unpacking and Installation Each ASM 988A is packed with a AC Power Cord and is ready to be mounted into a 19”
rack. The input data stream, IF output, and alarm output can be connected through the back panel. The IF test output could be used to monitor a –20dB attenuated modulated signal.
Connecting to the Unit
The tables located in Appendix A define the cable connections for the M2P, DVB-SPI and Relay Alarm connectors.
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ASM 988A – Manual
UNIT OPERATION
Turning the Unit On
The ASM 988A has a power switch located on the back panel near the AC power cord connector. Power to the unit should be turned on or off through the use of this switch. Once power is applied to the unit, the Power LED indicator will turn green and the fans internal to the unit will start. Approximately half minute after the unit is powered on, the VF Display will print “Initializing…” to signal that it is beginning to load registers within the modulator. The complete initialization process takes approximately one (1) minute to complete.
Configuring the Unit
When the unit has completely initialized, the VF Display will default to the setting shown in Figure 1.
Figure 1. Default Mode
In this mode, the ASM 988A will operate with the last parameters used to configure the unit. Each time a variable is changed within the unit’s configuration, all of the parameters are stored for recall. All of the stored parameters are used to reconfigure the system during power up and initialization.
Local entry through the keypad is provided to change the settings of the ASM 988A. The ESC key will always undo or return to the previous state. The ENTER key has several functions, depending on the menu. The specific function of the ENTER key is always displayed on the bottom line of the VF Display, when the key is active. The four arrow keys allow easy manipulation of the configuration parameters.
To configure the ASM 988A, press ENTER to bring up the local configuration menus. From here, parameters are partitioned into
-Input Source
-Modulation Format
-IF Frequency
-Symbol Rate
-Payload Rate
-Output Level
-Spectrum
-Alpha
-CW Test Mode
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-IF Output Muted
-Delete Sync Byte
-System Parameters
-Fault Settings
-View Faults
-Reset System
-SNMP Settings
INPUT SOURCE
The input menu allows the input to the modulator to be switched between one of seven (7) possible modes, PN-23 Normal, Inv PN-23, M2P Sink Clock, M2P source clock, DVB-SPI and DVB-ASI, ASI Sink Clock.
Note: In PN-23 and Inv PN-23 mode the inputs to the modulator are ignored as the unit produces an internal PN code.
Note: In DVB-ASI mode, the user has to adjust the payload data rate just above the average incoming payload rate to account for the asynchronicity in the ASI input. We recommend to set the payload data rate at 0.1% above the average incoming bitstream rate. If the data rate is too low the modulator will insert null packets and recalculate PCR to compensate for the rate change.
To change the input source, press ENTER to edit, use the Up/Down arrow keys to select and ENTER to save.
PN-23 This is a test mode designed to work in conjunction with the receiver to calculate true
BER.
Inv PN-23 This is a test mode designed to work in conjunction with the receiver to calculate true
BER.
M2P source clock
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ASM 988A – Manual
This is the M2P parallel interface. See pin out in Appendix of this manual. The maximum input data rate on this interface for the ASM 988A is 85Mbits. In this mode the clock is sourced from the modulator. The modulator provides the byte clock that the source needs to use to provide the correct Transport Stream rate to the modulator. In this mode the modulator act as a MASTER of the Transport Stream clock.
M2P Sink Clock This is the M2P parallel interface. See pin out in Appendix of this manual. The maximum
input data rate on this interface for the ASM 988A is 85Mbits. In this mode the clock is sourced to the modulator. The modulator locks to the provided byte clock that the source uses. In this mode the modulator act as a SLAVE of the Transport Stream clock.
DVB-SPI This is the DVB parallel LVDS interface. See pin out in Appendix A of this manual. The
maximum input data rate on this interface for the ASM 988A is 85Mbits/s.
ASI Sink Clock This is the ASI (Asynchronous Serial Interface). The maximum input data rate on this
interface for the ASM 988A is 85Mbits. In this mode the clock is sourced to the modulator. The modulator locks to the provided byte clock that the source uses. In this mode the modulator act as a SLAVE of the Transport Stream clock.
DVB-ASI This is the DVB ASI interface (Asynchronous Serial Interface). The transport stream is
embedded into a fix 270Mbits stream and provided on a BNC. The maximum input data rate on this interface for the ASM 988A is 85Mbits/s.
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ASM 988A – Manual
MODULATION FORMAT
The Modulation Format menus allow changes to different modulation modes supported by the ASM 988A. When this menu is selected, several options can be viewed by using the Up/Down arrow keys to scroll through the settings.
The Modulation menu allows DVB QPSK, 8-PSK mode, Advanced QPSK, Adv 16­QAM and DSS QPSK modes. All of these modes are available using Turbo Coded forward error correction. The QPSK DVB mode also allows for legacy DVB FEC support as well. The modulation mode and code rates are given together. In all, there are 17 combinations of modes and associated code rates that can be chosen between. To change the modulation mode and code rate, press ENTER to edit, use the Up/Down arrow keys to select a rate and mode, and press ENTER to save.
FEC FEC FEC FEC FEC
DVB QPSK 1/2 2/3 3/4 5/6 7/8 ADV QPSK 1/4 1/2 3/4 DSS QPSK 1/2 2/3 6/7 8SPK 2/3 3/4 (2.05) 3/4 (2.10) 5/6 8/9 Adv 16 QAM 3/4
This table is a summary of the different modulation modes and FEC available.
IF FREQUENCY
The Center Frequency of the modulated signal is centered about 70,000,000Hz. The center frequency can be changed through the menu within a band of 50MHz to 90MHz, in 1Hz increments. However, this signal is still restricted to a 40MHz window, where the cutoff for the low end of the band is fixed at 50MHz and the upper end is fixed at 90MHz. To change the IF Frequency, press ENTER, using the Up/Down arrow keys, set the new IF Frequency and save by pressing ENTER again.
SYMBOL RATE (SPS)
The Symbol Rate menu is the baud rate of the modulated signal, given in symbols/second. This, along with the rolloff of the channel, Alpha, gives the overall bandwidth of the channel. This parameter is also directly related to the payload rate. Changes to either parameter will affect the other. To edit the Symbol Rate, press ENTER to edit, using the Left/Right arrow keys to select a digit to modify and the Up/Down arrow keys to “thumbwheel” through digits, then press ENTER to save.
PAYLOAD RATE (bits/sec)
The Payload Rate is the amount of data that is transmitted through the channel, given in bits/second. This is related to the Symbol Rate through the Modulation Format and
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Coding Rate. Changes to this value will affect the Symbol Rate. To change the Payload Rate, press ENTER to edit, using the Left/Right arrow keys select digits to modify and Up/Down arrow keys to change the digit value, and press ENTER to save. Note that in both the Symbol Rate and Payload Rate edits, each digit can be modified separately, unless the maximum or minimum value is surpassed, in which case, the parameter is set to the maximum or minimum value, respectively.
Note: The Payload rate and the Symbol rates are related so if one is changed the other will change as well. We advise to set the symbol rate and verify the data rate is correct.
OUTPUT LEVEL
The Output Level menu allows the power output of the modulator to be adjusted from 5 dBm, which is full strength, to –20 dBm. The power output is temperature compensated. The power output of the front test connector is –20 dB below the output power level of the IF connector. These ports are referenced to each other, such that changes to the Output Level will affect both ports equally. To change the power output level, press ENTER to edit, using the Up/Down arrow keys, adjust the power level in 0.5 dBm increments, and press ENTER to save.
SPECTRUM
The channel spectrum can be set to Normal or Inverted, using the menu. Inverting the channel will invert the channel spectrum about the center frequency. To change the channel spectrum, press ENTER to edit, use the Up/Down arrow keys to modify the value and press ENTER to save.
ALPHA (Channel Rolloff)
The channel rolloff value, Alpha, determines the shape of the cosine filter used to limit the bandwidth of the modulated signal. The Alpha value is limited between 0.1 and 0.5. To modify the value, press ENTER to edit, use the Up/Down and Left/Right arrow keys to modify and ENTER to save.
CW TEST MODE
The CW test mode, allows switching between the modulated signal and the center frequency. When enabled, only the center frequency is transmitted. When disabled, the modulator will produce a modulated signal. CW Test mode is secondary to the Modulator Output Enable mode. When the modulator output is disabled, neither the CW Test signal or modulated output will be generated. To change the state of this test, press ENTER to modify, use the Up/Down arrow keys to change the state, and press ENTER to save.
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ASM 988A – Manual
IF OUTPUT MUTED
The Modulator Output mode allows the output of the modulator to be either enabled or disabled. When set to disabled, the modulator will suppress the output to below –60 dBm. When enabled, the output of the modulator will be either the selected modulation mode or CW Test mode, if enabled. To modify the value, press ENTER to edit, use the Up/Down arrow keys to change the state, and press ENTER to save.
DELETE SYNC BYTE
The Remove Sync Byte mode allows the user to remove the Sync Byte in the incoming MPEG stream. This will enable a saving in bandwidth of 1byte every 188 bytes, or
0.53%. This setting can be disable or enable. When set to Enabled, the modulator will suppress the incoming Sync Byte and the demodulator will reinsert it.. When Disabled, the modulator will leave the transport stream intact. To modify the value, press ENTER to edit, use the Up/Down arrow keys to change the state, and press ENTER to save. This mode is not available for legacy QPSK formats.
SYSTEM PARAMETERS
System parameters are unit specific parameters, such as system time, and time and date settings as well as global network settings and software version.
Setting Date Under this menu selection, the system time and date can be set. Press ENTER to change
the time and date. Use the LEFT, RIGHT arrows to select which digit to modify and use the UP, DOWN arrow to change the value of the time or day. Press ENTER to activate the new time and date. Time and date is important to the Log functions.
Daylight Savings
This menu allow the unit to automatically track the daylight savings time. When enabled, the unit will follow the US standard change of daylight saving time. To enable the daylight savings time press ENTER and use the up/down arrows to select enable. Press ENTER to validate.
Clock 24hr Mode
This menu allows the display of the time in military format (24H) or standard format (12 hours plus AM or PM). To enable 24hr mode, press ENTER and use the up/down arrows to select enable. Press ENTER to validate.
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ASM 988A – Manual
Display of system information The ASM 988A display some information about the status of the unit as well as the settings. Use the up/down arrows to select to read the status of the unit. The following information are available through this menu.
-Internal temperature
-Local IP address (IP Set)
-Application revision
-Xilinx Revision (Checksum)
-Mute on Startup
IP Set The unit hardware address can be read and two additional parameters guide the network
setup. First, the network can be configured as Off, Static, or DHCP controlled. If disabled, the IP address is irrelevant. The IP address can be changed to the address designated for the unit. Under DHCP, the IP address is dynamically allocated through a DHCP server. In this mode, the IP address setting can be read from the front panel of the unit (see Display of system information above). To modify the value press ENTER, use the Up/Down arrow keys to change the state, and press ENTER to save. If the IP is set to Static then the IP address needs to be set. From the IP Set menu, use the Up/Down arrow until the System IP address is displayed. Press ENTER to modify the IP address value. Use the Up/Down arrows and the left and right arrows to change the IP address. Press ENTER to validate the change.
Mute on Startup
The mute on startup menu allow the user to disable the input as the unit start. If enabled, the unit RF output will not be active on startup. To enable this function, press ENTER and use the up/down arrows to the desired setting. Press ENTER to activate the selection
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FAULT SETTINGS
Under the Fault Settings menu, several parameters related to the Fault Log and Alarm Relays can be configured. Faults are measured system parameters that are out of tolerance. The unit measures the input and output states of the modulator, fan speed, unit temperature, and system voltages. If any of these parameters are out of specification, the fault indicator on the front panel will light, an entry will be made in the Fault Log, and, if activated, a relay alarm will trip. The ASM 988A monitors the following conditions:
-Temperature: Above or below the normal internal operating temperatures: 0-50C
-Voltages: Internal 5V, 3.3V, 1.8V, +12V, -12V 10% above or below nominal values.
-Fans: At least one fan isn’t working properly.
-Input Lock: There is not valid input on the selected input or the input Transport Stream bitrate doesn’t match the set expected bitrate. (Not in ASI mode)
-Output Lock: There are errors on the output modulated signal or the output is disabled.
Reset Fault Log File Under this menu and history of the faults log file can be reset by using the ENTER key.
Reset Fault History Indicator Under this set of menus, the Fault History indicator on the Front Panel can be reset. This
indicator latches to red state whenever a fault condition occurs. The indicator can be reset only by using the Fault History reset function or by cycling power on the unit.
Fault Log Another function under this menu is to select a log interval when a condition is present.
Fault conditions are logged into a file after the condition is recognized. Subsequent entries are periodically logged into the log file if a fault condition continues to exist at the next entry period. This period can be configured to be 5 minutes, 15 minutes, 30 minutes, 1 hour, 12 hours or 1 day or Defeat (Defeat means no log will be created).
Relay 1 Settings The other set of functions under the Fault Settings menu are the relay mask registers.
These masks allow specific fault conditions to trigger specific relays. Each relay mask is identical and is defined to allow individual fault conditions to be enabled or disabled. Otherwise, the relay can be disabled or enabled, regardless of the other settings by enabling the Master. To change the setting of the relay, press ENTER and use the up/down arrows to select a condition that will trigger the relay. The error conditions are:
-Input
-Output
-Fan
-Temp
-Volt
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To enable a faulty condition to trigger the relay, press ENTER and select enable with the up/down arrows. Note: No matter what the individual error conditions settings, the trigger cannot be triggered until the Master is enabled.
Relay 2 Settings Same as Relay 1 for the settings of this relay.
Relay 3 Settings Same as Relay 1 for the settings of this relay.
The pinout of the Alarm Relay connector is given in Appendix A.
VIEW FAULTS
Under the View Faults menu, two main menus can be accessed.
-The Current Faults menu
-The View Fault Log
The current fault menu will indicate current problems as the fault log will log errors that occurred in the past. To see the log, select View Fault Log and press ENTER. Use the Up/Down arrows to select review the different entries in the log.
RESET SYSTEM
The unit allows the user to Reset the system. To reset the system press ENTER. Note that it takes about 1 minute to do a complete reset.
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SNMP (SIMPLE NETWORK MANAGEMENT PROTOCOL)
Simple Network Management Protocol (SNMP) is a protocol layer which is used with Ethernet to provide reliable system management from a remote location. On the ASM 988A, SNMP can be used to control and monitor the unit through both the Ethernet and serial ports. This protocol allows a standard method to change or monitor settable parameters and to generate a notice when an error condition occurs.
The SNMP Settings menu allow the user to change the SNMP Manager IP addresses. To change any of SNMP settings, use the up/down arrow to select which setting to change and press ENTER. There are 5 SNMP Manager IP addresses that can be set and each address can be enabled or disable.
For more information and to get a copy of the MIB (Management Information Database), please contact Sencore.
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LED INDICATORS
There are seven LED indicators on the unit, three status indicators and four alarm indicators. The three status indicators are to signal Power, Test and Local modes.
Status Indicators (3) The Power indicator denotes that the unit is on.
The Test Mode indicator demarks whether the modulator is producing a modulated output based on the input transport stream. When lit, the Test Mode indicator signals that the unit is configured for use with an internally generated PN-23 input or to produce a CW test signal.
The Local indicator denotes that the unit can only accept entries from the keypad, and that all remote operations are disabled. During the time that the unit is being accessed from the front panel, remote operations are disabled. This is a safety feature to prevent the same parameter from being modified to different values during the same time.
Alarm Indicators (4)
The four alarm LED indicators demark different error conditions. These are the Input, Output, Fault and Fault History alarms. These alarms are bi-colored. Green indicators denote that the alarm has not tripped, while red indicators report failures.
The Input alarm indicates that the modulator is unable to lock to the input data stream or that the incoming transport stream bitrate is different than what the Payload rate is set.
The Output alarm indicates that the modulator is unable to generate a correctly modulated signal.
The Fault alarm indicates that a fault is present or did happen. The Fault alarm signals that a voltage, temperature or fan is failing.
The Fault History alarm indicates that there are some events in the Fault log. When the Fault History is disable, the Fault History alarm LED will be blank.
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UNIT MAINTENANCE
SERVICING THE UNIT
There are no serviceable parts within the ASM 988A unit. Please return the unit to the factory for maintenance and repair.
Sencore Electronics 3200 Sencore Drive Sioux Falls, South Dakota 57107
Telephone: 1-800-SENCORE (1-800-736-2673) Or 605-339-0100
To insure quick response, please call the factory to give the product serial number and a description of the noted failure. A RMA/RUA will be required.
FAN FILTER CLEANING
This unit is designed for maintenance free operation. However, two filters are used to keep dust particles from entering the unit through the front fan intakes. These filters should be cleaned on a regular basis.
To remove the filters, release the two quarter-turn fasteners on each fan grill on the front of the unit. Remove the filters and clean. Replace the filters and fan covers
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APPENDIX A: CABLE PINOUTS
M2P Transport Stream Input Port
13 1
25 14
Pin Number Connection 1 CLOCK OUT + 2 CLOCK IN + 3 INPUT SYNC + 4 INPUT DATA VALID + 5 INPUT D0 + 6 INPUT D1 + 7 INPUT D2 + 8 INPUT D3 + 9 INPUT D4 + 10 INPUT D5 + 11 INPUT D6 + 12 INPUT D7 + 13 GROUND 14 CLOCK OUT ­15 CLOCK IN ­16 INPUT SYNC ­17 INPUT DATA VALID ­18 INPUT D0 ­19 INPUT D1­20 INPUT D2­21 INPUT D3­22 INPUT D4­23 INPUT D5­24 INPUT D6­25 INPUT D7-
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DVB-SPI Transport Stream Input Port
13 1
25 14
Pin Number Connection 1 LCLOCK 2 GROUND 3 LD7 4 LD6 5 LD5 6 LD4 7 LD3 8 LD2 9 LD1 10 LD0 11 LVALID 12 LPSYNC 13 GROUND 14 /LCLOCK 15 GROUND 16 /LD7 17 /LD6 18 /LD5 19 /LD4 20 /LD3 21 /LD2 22 /LD1 23 /LD0 24 /LVALID 25 /LPSYNC
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Alarm Relay Output Port
ASM 988A – Manual
Pin Number Connection 1 Relay 2 – Normally Open 2 Relay 2 – Common 3 Relay 1 – Normally Closed 4 Relay 1 – Normally Open 5 Relay 1 – Common 6 Relay 3 – Normally Closed 7 Relay 3 – Normally Open 8 Relay 3 – Common 9 Relay 2 – Normally Closed
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APPENDIX B: SOFTWARE TREE
Reset Fault History Indicator
Table 1 illustrates the menu tree accessible through the front panel. This table is structured from left to right, where menus to further to the right are submenus.
Root Submenu Submenu Submenu
Input Signal DVB-ASI ASI Sync Clock DVB-SPI M2P Sink Clock M2P Source Clock Inv PN-23 PN-23 Normal Modulation Format Adv QPSK, Rate 3/4 Adv QPSK, Rate 1/2 Adv QPSK, Rate 1/4 DSS-QPSK, Rate 6/7 DSS-QPSK, Rate 2/3 DSS-QPSK, Rate 1/2 QPSK DVB Legacy, Rate 7/8 QPSK DVB Legacy, Rate 5/6 QPSK DVB Legacy, Rate 3/4 QPSK DVB Legacy, Rate 2/3 QPSK DVB Legacy, Rate 1/2 Adv 16 QAM , Rate 3/4 8 PSK Turbo, Rate 8/9 8 PSK Turbo, Rate 5/6 8 PSK Turbo, Rate 3/4 (2.10) 8 PSK Turbo, Rate 3/4 (2.05) 8 PSK Turbo, Rate 2/3 IF Frequency (MHz) 50.000000 to 90.000000 Symbol Rate (Msps) 0.256000 to 30.000000 Payload Rate (Mbps) 0.5 to 85 Mbits/s Attenuation (dB) +5 to -20dBm Spectrum Normal/Inverted Alpha 0.10 – 0.50 CW Test Enable/Disable IF Output Muted Enable/Disable Delete Sync Byte Enable/Disable System Parameters System Date and time Set the date and time Daylight Savings Enable/Disable Clock 24hr Mode Enable/Disable System Temperature IP Set Static, DHCP, Off + IP adress Software Revision Xilinx Revision Mute on start up Enable/Disable Fault Settings Reset Fault Log File Fault Log Defear, 5 min, 15 min, 30 min, 1 hr, 12 hr, 1 day Relay 1 Settings Master, Input, Output, Fan, Volt, Temp. Relay 2 Settings Master, Input, Output, Fan, Volt, Temp. Relay 3 Settings Master, Input, Output, Fan, Volt, Temp. View Faults Current Fault View Fault Log Reset System SNMP Settings Set IP manager Address 1 Enable/Disable Set IP manager Address 2 Enable/Disable Set IP manager Address 3 Enable/Disable Set IP manager Address 4 Enable/Disable Set IP manager Address 5 Enable/Disable
ASM 988A – Manual
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ASM 988A – Manual
NOTES:
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