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PT 5780 DVB-T Modulator

ProTelevision Technologies

Operating Instructions

Instruction Manual

Revision 3.11

4-1

4

Operating Instructions

4.1

Front Panel

All operational control and configuration are conveniently carried out from the front panel.

The two line by forty characters LCD display, in conjunction with four cursor keys and an

EXECUTE

button, allows easy operation of the PT 5780 DVB-T Modulator.

The display is used to indicate the status of various system parameters and also allows
changes to be made to these system parameters.

The cursor keys and EXECUTE button are used to navigate through the menu system and to
configure system parameters.

Front of the Instrument

4.1.1

Front Panel Indicators

Green POWER ON LED

When lit up, the green LED indicates that power is available from the supply.

Red ALARMS LED

This LED indicates the presence of an irregularity when any of the alarm conditions (e.g. “Sync
Loss”, “Reference Loss”, etc) are “active” AND they have been configured to output to one of
the relays. See Chapter 4.3.4.5 Alarm menu system for more details.

In addition this LED may flash. This occurs when there is a test signal active.

Red UNLOCKED LED

When lit up, the red LED indicates failure of the modulator in synchronizing to the incoming
transport stream or external frequency reference signal.

Note that the Alarm & Unlocked LEDs flash when the DVB-T modulator output is muted. Note
that the output in SFN mode will mute irrespective of the general programming of mute
conditions until the modulator have established synchronising to the timing references (1PPS,
10MHz and MIP).

4.1.2

Front Panel Controls (The menu system)

For cursor buttons and an execute button plus an LCD display are available for front panel
control of the DVB-T Modulator. The front panel functions are divided between read-out of
status information (transmission mode, output frequency, alarm status, etc.) and actual
setting/change of parameters that will affect the modulator output. To navigate between the two
functionalities (status and configuration) please refer to the drawing in figure 4-1

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Содержание PT 5780

Страница 1: ...ProTelevision Technologies A S Marielundvej 16 DK 2730 Herlev Denmark PT 5780 DVB T Modulator ASIC Instruction Manual ...

Страница 2: ...SION technologies An ISO 9001 Certified Company PT 5780 DVB T Modulator Instruction Manual Total number of pages 95 Copyright 2003 ProTelevision Technologies A S Denmark All Rights Reserved Printed in Denmark 2003 08 25 Revision 3 11 Publication number 9499 493 12611 ...

Страница 3: ...EST FACILITIES 2 7 3 INSTALLATION 3 1 3 1 INITIAL INSPECTION 3 1 3 2 SAFETY INSTRUCTION 3 1 3 2 1 Earthing 3 1 3 3 MAINS VOLTAGE CORD AND FUSES 3 1 3 4 RACK MOUNTING 3 2 3 5 CLEANING 3 2 3 6 CONFIGURATION 3 3 3 6 1 Wiring schemes for RS 232 handshake not implemented 3 3 3 6 2 Alarms 3 3 3 6 3 Mute 3 4 3 6 4 Reset 3 4 3 7 ACCESS TO AND REPLACEMENT OF PARTS 3 4 3 7 1 Safety 3 4 3 7 2 Access to the U...

Страница 4: ... OF OPERATION 4 31 4 6 FATAL ALARMS 4 32 4 6 1 Modulator Board Controller Not Responding 4 32 4 6 2 Instrument Too Hot 4 32 4 7 ERROR HANDLING AND CODES 4 32 5 REMOTE INTERFACE 5 1 5 1 GENERAL DESCRIPTION 5 1 5 2 GENERAL DESCRIPTION OF THE INTERFACE SYNTAX 5 1 5 2 1 General Information 5 1 5 2 2 Syntax of Program Messages 5 2 5 2 3 Syntax of Response Messages 5 2 5 2 4 Long and Short Form 5 3 5 2 ...

Страница 5: ...6 6 3 3 4 DISPlay subsystem 6 26 6 3 3 5 INPut subsystem 6 27 6 3 3 6 OUTPut subsystem 6 27 6 3 3 7 MONitor subsystem 6 29 6 3 3 8 PRECorrect Nonlinear Pre corrector subsystem 6 29 6 3 3 9 LPRecorrect Linear Pre corrector subsystem 6 29 6 3 3 10 SFN subsystem 6 30 6 3 3 11 ALARm subsystem 6 30 6 3 3 12 EVENt subsystem 6 31 6 3 3 13 TEST subsystem 6 31 6 3 3 14 FACTory subsystem 6 31 6 4 ERROR CODE...

Страница 6: ...PT 5780 DVB T Modulator ProTelevision Technologies Contents Instruction Manual Revision 3 11 iv This page is intentionally left blank ...

Страница 7: ...ical information important for safe operation of the equipment Please refer to the relevant sections of the manual for technical specifications installation and operating instructions Special attention must be paid to the following issues Protective earthing of the instrument is required for the accessible terminals to be safe IEC 1010 1 Safety class I instrument The actual environmental condition...

Страница 8: ...r to the Chapter Product Data for information regarding technical specifications and the Chapter Installation and Operating Instructions regarding instructions for use Technical assistance may be obtained from your local ProTelevision Technologiescustomer support organization or from ProTelevision Technologies Marielundvej 16 DK 2730 Skovlunde Denmark Phone 45 4470 0000 Fax 45 4470 0001 E Mail hel...

Страница 9: ...ng hazardous live by means of basic insulation and protective screening Whenever it is likely that safe operation is impaired the instrument must be made inoperative and secured against unintended operation The appropriate servicing authority must be informed For example safety is likely to be impaired if the instrument fails to perform the intended measurements or shows visible damage WARNING Pro...

Страница 10: ...minal or parts exists or may be adjusted to 1000 V or more High voltage 1000 V Black Yellow Live part shock risk of electric shock Black Yellow To preserve the instrument from damage the operator must refer to an explanation in the instruction manual White Black Protective earth grounding terminal Black Alternating current placed on the identification plate White Black Off supply mains switch On s...

Страница 11: ... will allow the user to interface the IF signal to a wide range of transmitters and frequency converters The basic unit has two MPEG 2 inputs ASI format Switching between the two inputs can be done manually and automatically The latter option provides near seamless switching to a secondary transport stream in case the primary transport stream source fails a truly valuable feature for broadcast app...

Страница 12: ...s option for T M and R D applications is also highly attractive as the user simply executes the switching between the three bandwidths via the instrument front panel one instrument covers all bandwidths defined by the ETS for DVB T transmission To maximise the performance of the transmitter in which the modulator is installed the Digital Linear and Non linear Pre corrector PT 8731 option is recomm...

Страница 13: ...8715 RF converter RF 30 1000 MHz ASI input A IFmonitoring 3 6 M H z M P E G 2 T S DVB T Modulator PT 5780 ASI input B TS source selector HP LP R S 2 3 2 f o r S C P I c o n t r o l or O p t i o n a l l y R J 4 5 for Ethernet R S 2 3 2 f o r S C P I c o n t r o l OPTION PT 8717 WebLink for Web browser control OPTION PT 8727 SNMP Client OPTION PT 8731 Digital Linear and Non linear Pre correction Sys...

Страница 14: ...lable data rate is divided between the high priority channel and the low priority channel The bit rate for the high priority channel is equal to the capacity stated in the QPSK section of the applicable table irrespective of the constellation chosen For the low priority channel the capacity depends on the chosen constellation 64Qam or 16QAM By 64QAM constellation the capacity of the hierarchical l...

Страница 15: ...75 16 QAM 13 063 14 515 15 369 15 834 5 6 14 515 16 127 17 076 17 594 7 8 15 240 16 934 17 930 18 473 13 063 14 515 15 369 15 834 2 3 17 418 19 353 20 491 21 112 64 QAM 19 595 21 772 23 053 23 751 5 6 21 772 24 191 25 614 26 390 7 8 22 861 25 401 26 895 27 710 Table 2 2 Available data rate for 7MHz DVB T Modulation Code rate Guard interval 1 4 1 8 1 16 1 32 3 732 4 147 4 391 4 524 2 3 4 976 5 529 ...

Страница 16: ...a 2 line LCD display Navigation between the menus is done by means of a set of cursor keys UP DOWN LEFT RIGHT and an EXECUTE key To facilitate the remote control of several transmitters each modulator may be individually named 16 characters This name appears on the front panel display and is available on the remote port Also the modulator may be controlled by data embedded in the incoming MPEG tra...

Страница 17: ...um can be switched off This test signal is in principle an off line test signal However as the FEC of the COFDM coding will normally cope with the loss of a single carrier without difficulty the signal can be activated during normal transmission with marginal influence to the performance slight increase in BER may be noticed 50 Carrier test signal To allow analysis of in band intermodulation in a ...

Страница 18: ...Introduction and Applications ProTelevision Technologies PT 5780 DVB T Modulator Instruction Manual Revision 3 11 2 8 This page is intentionally left blank ...

Страница 19: ... protective conductor inside or outside the instrument or disconnection of the protective earth terminal is likely to make the instrument dangerous Intentional interruption is prohibited 3 3 Mains Voltage Cord and Fuses Different power cords are available for the various voltage outlets Note If the mains plug has to be adapted for local use only a qualified person should carry out this task This i...

Страница 20: ...ether with this instrument If several cabinets are mounted in a 19 rack special attention must be paid to the temperature inside the rack The DVB T modulator is equipped with cooling fans and air inlets on the side of the cabinet Note The operation of the fan is temperature controlled If the DVB T Modulator is mounted between other instruments with high surface temperature this cooling may not be ...

Страница 21: ...RxD TxD TxD RxD DTR DSR GND GND DSR DTR RTS CTS CTS RTS 1 3 2 6 5 4 8 7 9 9 pins 9 pins PT 5780 PC controller Not implemented 1 2 3 4 5 6 7 8 9 RxD TxD TxD RxD DTR DSR GND GND DSR DTR RTS CTS CTS RTS 2 3 6 7 20 5 4 9 pins 25 pins PT 5780 PC controller Not implemented 3 6 2 Alarms Wiring of ALARM CONNECTIONS MR GND Mute 9 8 7 6 5 4 3 2 1 Alarm 2 Alarm 1 Note Contact ratings 60V 0 2A max 5W load ...

Страница 22: ...modulator chassis The opening of covers or removal of parts except those to which access can be gained by hand is liable to expose live parts The instrument must be disconnected from all voltage sources before performing any adjustment replacement maintenance or repair which requires the instrument to be opened If repair of the opened instrument is unavoidable it must only be carried out by a skil...

Страница 23: ... are active AND they have been configured to output to one of the relays See Chapter 4 3 4 5 Alarm menu system for more details In addition this LED may flash This occurs when there is a test signal active Red UNLOCKED LED When lit up the red LED indicates failure of the modulator in synchronizing to the incoming transport stream or external frequency reference signal Note that the Alarm Unlocked ...

Страница 24: ...01 2003 u 5 7 8 0 w o r k m a n u a l v 3 d r a w i n g s s t a t u s a n d c o n f i g s y s t e m Figure 4 1 Front panel menu system Dependent on the specific function being operated via the front panel the cursor keys may have the following functions The 5 5 button is used to either Scroll through the different sub displays provided within the status menu system refer to the enclosed Status Men...

Страница 25: ...used 5 5 6 6 3 3 4 4 Indicates which arrow buttons are active E Indicates that the EXECUTE button must be pressed to activate the required selection These flashing brackets indicate the position of the cursor when in a menu option listing also described as the current menu option in this manual These flashing brackets indicate the position of the cursor when in a enumerated parameter listing or wh...

Страница 26: ...his manual For configuration of alarms refer to Chapter 4 3 4 5 Alarm menu system Reference Inputs 1 PPS A BNC connector is provided for a 1 pulse per second input signal for SFN synchronization 10 MHz A BNC connector is provided for an external frequency reference input of 10 MHz IF Output A BNC connector with a 50 impedance is provided for the IF output signal IF RF Output A An N type connector ...

Страница 27: ...te that additional configurable options are available via remote access control See Chapter 6 2 3 The menu system has two main functions 1 system status display the display of various modulator configuration settings through status windows 2 system configuration the ability to modify the modulator s configuration settings through configuration windows On start up the modulator always enters the sy...

Страница 28: ...nsists of a maximum of eight main status windows Each main status window can be divided into a number of sub windows The status windows display the settings of various configurable options and system variables A description of each status window is provided below Each status window is identified with a flashing character a n through to h n in the lower right hand corner of the display n is an inte...

Страница 29: ...er is set to one of the hierarchical modes alpha 1 alpha 2 or alpha 4 the following window is displayed assuming that input B has been selected as LP source INPUT LP B ASI 204 OK wv8E Ref Int a2 The Input status windows show the data packet size the input signal type and the source of the 10MHz system reference clock Internal or External Status Window a1 Signal loss vs Auto Substitute function Whe...

Страница 30: ... rate of the applied stream is not constant TS Buffer fill indicator wv8E 2 packages c1 Status Window c1 SFN config The SFN delay status display This window is only available in SFN mode It displays the maximum network delay value extracted from the MIP 100ns resolution and the delay margin 1 ms resolution The delay margin is defined as the time in ms that a mega frame is stored in the input buffe...

Страница 31: ...F level is 0dBm Status Window d2 The Pre Corrector Status Window This window is only available if the pre corrector option PT 8731 is installed On the first line of the window the display shows whether the non linear and linear pre correction functions are currently in operation On the second line the origin of the employed pre correction curves is indicated The pre correction curves can be loaded...

Страница 32: ...ier None Guard 1 16 f1 DEM1 IFFT Const CR wv8E Unlock Hier Guard f1 Status Window g1 The Alarm Status Window The alarm status display provides a detailed description of the cause of any active currently present alarm conditions If more than one alarm are active simultaneously the individual alarms can be observed one by one by scrolling through the list by means of the UP or DOWN cursor keys If th...

Страница 33: ...status window displays the current test signal configuration and is only available if a test signal is active via the TEST SIGNAL SELECT TEST sub menu Menu ID 6000 Note that the test signal menu is only available if the TEST SIGNAL lock in the sub menu CONFIGURE LOCK menu ID 5100 is OFF 4 3 4 Configuration Menu System Two methods for accessing the configuration menu system exist The first step is ...

Страница 34: ... maximum of four levels hence the four digit identification See examples below Examples of the top level of the configuration menu system are shown below in Examples A and B The character string DVB T Modulator is always positioned on the left hand side of the display when in the top level of the configuration menu system The available menu items are shown on the second line and may be scrolled th...

Страница 35: ... The last digit of the current parameter value flashes to indicate that this digit will be changed if the UP or DOWN keys are pressed The other digits of the value can be edited by navigating to the digit using the LEFT or RIGHT keys The valid range for the parameter is indicated in square brackets in the bottom right hand side of the display Example E Sig Out RF Level dB 2250 wv8E 00 0 10 0 0 0 F...

Страница 36: ... 3100 Table 4 1 Context sensitive menu access 4 3 4 3 TRANSMISSION Menu System Menu ID 1000 The top level of the transmission menu system menu ID 1000 is accessed by pressing the EXECUTE button followed by the RIGHT ARROW button as described in paragraph 4 3 4 1 By applying the LEFT RIGHT UP DOWN keys as required see attached Configuration Menu System diagram it is possible to navigate to a number...

Страница 37: ...input if the Auto substitution function is set to ON requires that a valid MPEG 2 transport stream is applied to the secondary input For hierarchical applications the user will typically assign input A as primary source for the High Priority input Menu ID 2120 and assign input B as primary source for the Low Priority input menu ID 2130 If the option that provides two additional ASI inputs is insta...

Страница 38: ... the trade off between obtained sideband suppression and cross talk between two successive COFDM symbols The default window ratio 1 64 provides maximum sideband suppression The Spectrum sub menu ID 2280 allows the user to set the polarity of the spectrum as required When NORMAL polarity is selected carrier number 1 of the COFDM spectrum is located at the lowest frequency whereas the last carrier n...

Страница 39: ...witching the linear pre corrector function on off menu ID 2410 and for recalling a correction curve from the preset library menu ID 2420 The definition of pre correction curves must be done via the remote interface by means of the separate PC software tool IMD Buster supplied with the pre corrector option Monitor ID 2500 This menu allows the user to specify which signal that is to be routed to the...

Страница 40: ...tton as described in paragraph 4 3 4 1 When the menu system is entered at menu TRANSMISSION use the RIGHT ARROW button to navigate to the Alarm menu Define Alarm menu ID 3100 This menu allows the user to program the desired response for each of the possible alarms that can be raised by the unit For each type of alarm the user can choose to route the alarm to one or several of the following destina...

Страница 41: ...odulator 1 is configured for monitoring of the output signal 4 10MHz reference loss 10MHz reference not available 5 System error Internal malfunction alarm 6 Timing adjusted Indicates that the modulator has adapted the internal system clock or internal 1PPS timing to allow for a mismatch between the local network timing reference 10MHz and 1PPS and the timing reference MIP embedded in the incoming...

Страница 42: ...arm Limits Demodulator 1 Alarm Limits submenu NOTE ONLY AVAILABLE WITH DVB T RE MODULATOR PT 5788 13 Demodulator 2 type Indicates that an alarm of the specified type BER pre Viterby BER post Viterby and UCE has been raised to signal that the associated threshold has been exceeded The thresholds are specified via the Alarm Alarm Limits Demodulator 2 Alarm Limits submenu NOTE ONLY AVAILABLE WITH DEM...

Страница 43: ... ID 3420 Allows user specification of the minimum RF input level accepted If the received level drops below this threshold the RF Tuner Input Level alarm will be raised 10 100dBuV default value is 10dBuV Note This function is only available with DVB T Re Modulator PT 5788 Demodulator 1 Alarm Limits sub menu ID 3430 User definition of the BER and UCE counts above which the Demodulator 1 alarm will ...

Страница 44: ...arm status display when the alarm is raised However to allow uninterrupted operation of the instrument via the front panel during repeated occurrence of an intermittent alarm the alarm window will not open until five seconds after the last key press of any front panel key have taken place 4 3 4 6 PRESET Menu System Menu ID 4000 The PRESET menu options provide the capability of saving STORE the mod...

Страница 45: ...ERIAL 2 menu menu ID 5600 allows the user to set the baud rate for the serial communication interface SERIAL 2 Two sub menus are available the SIO PRESETS sub menu ID 5610 and the BAUD RATE sub menu ID 5620 The SIO PRESETS sub menu allows the user to set the baud rate directly according to the specific application The choices are WebLink 57600 IMD Buster 57600 Software Upgrade 115200 The baud rate...

Страница 46: ...n the single carrier test signal is activated the normal DVB T spectrum is substitutes for a single continuous sine wave located at the centre frequency of the normal in service DVB T spectrum The RMS level of the sine equals the average RMS level in the full bandwidth of the normal DVB T spectrum The signal is therefore excellent for adjusting transmitter level and or verifying frequency accuracy...

Страница 47: ...ng is 8MHz Selectable settings are 8 7 and 6MHz PRIORITY sub menu ID 7330 User definition of the virtual channel to be extracted from the DVB T signal by hierarchical mode Default setting is HP channel Selectable settings are HP and LP PARAMETER MODE sub menu ID 7340 User definition of the method used for setting the reception parameters of the demodulator Two choices are available Auto mode where...

Страница 48: ...l mode Default setting is HP channel Selectable settings are LP and HP This menu is only available if one of the hierarchical modes is selected via the transmission parameter menu PARAMETER MODE sub menu ID 7450 User definition of the method used for setting the reception parameters of the demodulator Two choices are available Auto mode where the demodulation parameters Hierarchy FFT Code rate con...

Страница 49: ...mber and name for the recorded event type plus when applicable additional information concerning the event Event 67 2003 01 24 17 34 36 wt8E 2240 Sync Unlock HP By pressing the LEFT or RIGHT button the other events recorded in the log can be observed one by one When pressing the RIGHT button when observing the last recorded event the display will wrap around to the first event which will always be...

Страница 50: ... 9 using the 5 button causes the value to change to 0 If the value can be a negative number using the 5 button in the first character space toggles between the negative sign and a blank positive EXECUTE Completes editing Note that if a numerical configurable item has a minimum and or maximum value the user cannot modify the value to below the minimum or above the maximum values If the value has be...

Страница 51: ...es YES execute wv8E 0 05 10 0 0 0 the characters E and flash at approximately 2 Hz As before all buttons perform the same functions as when saving a change and again if the display times out or there is a power outage the new value will be retained 4 3 5 3 Editing of Text Preset Name 1 4310 wv8E Hove Tx 12 the character H alternates between H and _ at approximately 2 Hz The current text string is ...

Страница 52: ...s all configurable menu and sub menu parameters in the TRANSMISSION SIGNAL ALARM and TEST SIGNAL menus and some of the menu options in the CONFIGURE menu to their default settings It does NOT overwrite the User Name and CONFIGURE CLOCK parameters nor does it overwrite the parameters stored in the system PRESET locations or those stored in the non linear and linear pre corrector preset locations In...

Страница 53: ...ld be drawn to the following points regarding an SFN system SFN Mode and External 10 MHz Reference Preferred mode of operation If the SFN system is set up with the 10 MHz reference source set to External and the external reference signal is lost the Reference Loss alarm will occur and the output signal is muted Using this reference setting in SFN will provide a system that mutes the output in case...

Страница 54: ...ntroller Not Responding If the modulator board stops responding or does not respond during the start up process the following window will be displayed F A T A L E R R O R BACK END CONTROLLER NOT RESPONDING The first line flashes If the back end controller starts responding or if the user presses the EXECUTE button the system automatically resets and the system tries to recover 4 6 2 Instrument Too...

Страница 55: ...erial remote a basic understanding of SCPI programming and computer control is also recommended The paper A Beginner s Guide to SCPI by Barry Epler Hewlett Packard Press 1991 can be used to gain a basic knowledge of the ideas behind the SCPI system 5 2 General Description of the Interface Syntax 5 2 1 General Information The remote interface system is organized in a tree structure In order to acce...

Страница 56: ...am message terminator The program message terminator must be the following code LF line feed decimal10 code Basically there are two types of program headers Compound headers Commands have a compound header consisting of one of more key words mnemonics mutually separated by a colon character Such as a colon may also precede the header Command headers The program messages that are standardized are c...

Страница 57: ...y be used in any mix of upper or lower case characters There is no semantic difference between upper and lower case in program messages 5 2 5 Syntax Elements Semicolon separates two commands on a command line and does not change the path Colon separates the keywords of a command In a command line a colon after a separating semicolon indicates the root control level Moves down for level Comma separ...

Страница 58: ...Remote Interface ProTelevision Technologies PT 5780 DVB T Modulator Instruction Manual Revision 3 11 5 4 This page has intentionally been left blank ...

Страница 59: ...ENT STATUS ENABLE COMMAND The device accepts this command but does not act on it ESE STANDARD EVENT STATUS ENABLE QUERY The device accepts this query command but does not act on it Note that this query command responds with a 0 ESR STANDARD EVENT STATUS REGISTER QUERY The device accepts this query command but does not act on it Note that this query command responds with a 0 IDN IDENTIFICATION QUER...

Страница 60: ...ired commands are those that required in all SCPI compliant instruments 6 2 2 1 SYSTem commands SYSTem ERRor Query command for reading an SCPI error message from the error queue See Chapter 6 4 for a complete list of error codes Example SYST ERR Response 102 Syntax error SYSTem VERSion Query command for reading the SCPI version to which the RS232 implementation complies Example SYST VERS Response ...

Страница 61: ...t to next entry in the error queue This command should be executed five times to read the complete error queue 6 2 3 2 SYSTem commands SYSTem PRESet RECall Command to recall a stored modulator configuration from a preset The configuration settings that a preset saves are listed in Chapter 4 3 4 6 There are 10 user presets from 1 to 10 available Example SYST PRES REC 3 Recall preset 3 in the modula...

Страница 62: ... Technologies The options are coded in a 16 digit character string Example SYST OINS AAAA AAAA AAAA AAAA Change the options available for use SYST OINS Response AAAA AAAA AAAA AAAA SYSTem OUSed Command to enable disable the installed hardware software options in an On 1 Off 0 format There can be up to 32 hardware software options however at the moment there is a maximum of 11 possible options whic...

Страница 63: ...ERial TRANsmit BAUD Command to set or query the baud rate on the RS232 serial ports 1 and 2 Baud rates of 1200 2400 4800 9600 19200 and 115200 are possible Example SYST COMM SER TRAN BAUD 1 19200 Set a baud rate of 19200 on RS232 port 1 SYST COMM SER TRAN BAUD 1 Response 19200 SYSTem FRESet Command to carry out a factory reset of the device See Chapter 4 4 for details of system parameters that are...

Страница 64: ...is identified as input C In addition if the hierarchical version of the modulator was purchased it would also be possible to select both high and low priority primary inputs Example for non hierarchical version INP PRIM A Select primary input A INP PRIM Response A B The second parameter should be ignored in this case non hierarchical version Example for hierarchical version INP PRIM A B Select inp...

Страница 65: ...Hz impedance input reference signal choosing between a 50 Ω or high impedance signal Example INP REF MHZ HIMP Select a high impedance10MHz reference signal INP REF MHZ Response HIMPEDANCE INPut REFerence PPSTlevel Command for selecting the 1 PPS trigger level A range of 0 to 3 5 V is available Example INP REF PPST 0 4 Select a 1PPS trigger level of 0 4 V INP REF PPST Response 0 4 INPut REFerence Q...

Страница 66: ...lected address 0 is reserved for broadcasting messages from the SFN Adapter To be able to address the specific modulator in question a unique address in the range 1 65535 must be selected Example INP TXID 25 Select address 25 INP TXID Response 25 6 2 3 6 OUTPut commands OUTPut MODE IFFT Command to select the FFT size from either 2k or 8k Example OUTP MODE IFFT F2K Set system for 2k IFFT OUTP MODE ...

Страница 67: ...used to to set the transport stream control on or off Setting the TS control off allows the user to configure the transmission mode settings when the information is not available in the transport stream Example OUTP MODE TSEN ON Set transport stream control ON OUTP MODE TSEN Response ON OUTPut MODE Query command to retrieve the output mode parameters Hierarchical mode IFFT code rate s constellatio...

Страница 68: ... OUTP RF FREQ 64000khz Set RF to 64 MHz OUTP RF FREQ 64 025mhz Set RF to 64 025 MHz OUTP RF FREQ Response 64025000 OUTPut RF LEVel This command is used to set the RF level in the RF version of modulator The level range possible is 10 to 0 dB in 0 1 dB steps Note that the command OUTPut LEVel could also be used see this command description below Example OUTP RF LEV 1 5 Set RF level to 1 5 dB OUTP R...

Страница 69: ... only if the RF converter is installed and enabled and the user defined channel raster is selected The format of the command is as follows OUTP UCD start channel no base frequency where start channel no is the channel number of the first channel 1 99 base frequency is start frequency for the band i e the lower edge of the first channel Example OUTP UCD 28 526mhz Select User channel raster starting...

Страница 70: ...symbol guard interval that are used for creating the smooth transition between consecutive symbols The largest proportion 1 64 gives the highest sideband suppression and the lowest proportion 1 512 gives the lowest suppression There is a trade off between useful guard interval and sideband suppression Example OUTP WIND ROLL W1_64 Set window filter roll off to 1 64 OUTP WIND ROLL Response W1_64 OUT...

Страница 71: ...orrector function Switching the pre corrector on activates the pre corrector function and downloads the active curve The active curve is defined as the curve that is functional when the pre correction function is operational Example PREC ENAB ON Activate the non linear pre corrector function PREC ENAB Response ON PRECorrect GAIN Command to change the non linear pre corrector input gain Example PRE...

Страница 72: ...2 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 81 92 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 819...

Страница 73: ...2 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 8192 0 PRECorrect CURVe CHECksum Query command only This is a 32 bit simple addition sum of ALL points from 0 to 255 for the curve in the active location curve 0 or a curve in a preset location preset locations 1 to 10 Example PREC CURV CHEC 0 Response 2097158 PR...

Страница 74: ...17 4 8368 4 8302 4 8232 4 8170 4 812 7 4 8103 4 8095 4 8100 4 8113 4 8131 4 8149 4 8166 4 8176 4 8180 4 8181 4 8177 4 8171 4 8163 4 8155 4 8147 4 8141 4 8137 4 8134 4 8134 4 8136 4 8140 4 8146 4 815 4 4 8165 4 8177 4 8190 4 8202 4 8211 4 8218 4 8221 4 8219 4 8211 4 8198 4 8183 4 8166 4 8150 4 8137 4 8127 4 8122 4 8124 4 8133 4 8147 4 8163 4 8180 4 8196 4 820 9 4 8216 4 8216 4 8211 4 8202 4 8190 4 ...

Страница 75: ... of the coefficients in the active location as shown LPR COEF Response 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 511 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 LPRecorrect DESCription Text string for identifying the active linear pre correction curve using a maximum of 30 characters Example LPR DESC Test 1 Name the active coefficient Test 1 LPR DESC Response Test 1 Note that the query com...

Страница 76: ...ar pre correction coefficients with the name Name 2 in preset 2 LPR PRES 2 Response Name 2 0000202020A0002020402 0202020402040202000402020402020202020104040200022102020202020202020202020202 020202020202020202020201010404010 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 511 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 LPRecorrect RECall Transfer the linear pre correction curve configuration from...

Страница 77: ...m the modulator only available when the instrument is configured SFN and hierarchical mode Example SFN MARG LP Response 350 SFN MAXDelay Query only command to view the maximum network delay in multiples of 100 ns The example below shows a maximum network delay of 500 msecs Example SFN MAXD Response 5000000 SFN OPTional TIMeoffset Query command to view the optional time offset in multiples of 100 n...

Страница 78: ...action i e to Mute M send to Relay 1 1 send to Relay 2 2 and send to the Event Log E The format of the command is as follows ALAR SDEF ID Number of Alarm Condition Alarm Action See table below for the ID numbers of the alarm conditions Note that ID 0 is used for all alarm sources conditions Example ALAR SDEF 1 M1E For a sync loss alarm mute the output and send the alarm signal to relay 1 and there...

Страница 79: ... OPTION PT 8732 8 Mega Frame MIP Loss Indicates that no valid MIP is available in the applied transport stream NOTE ONLY AVAILABLE WITH SFN OPTION PT 8732 9 RF converter Indicates that an alarm has been raised for the RF converter module NOTE ONLY AVAILABLE WITH RF CONVERTER OPTION PT 8715 10 RF tuner Indicates that an alarm of the specified type has been raised for the RF tuner module NOTE ONLY A...

Страница 80: ...mber of times alarm has been raised since the last counter reset or factory reset See table above for the ID numbers of the alarm conditions Example 1 an active alarm ALAR STAT 1 Response 1 1 3 That is the alarm source 1 Sync Data loss has an active alarm The Sync Data loss alarm has been raised 3 times since the last counter reset Example 2 an inactive alarm ALAR STAT 4 Response 4 0 0 That is the...

Страница 81: ...recorded event type in this case 1411 2 A time and date stamp in the format yyyy mm dd hh mm ss 3 A text string providing additional information abut the event in this case Log Cleared Ram lost which is the event that follows the users reset of the event log system by means of the command EVEN CLEA Note If event details are requested for an event number that exceeds the number of events currently ...

Страница 82: ...ature MC_BT the 2 5 V MC_025V 3 3 V MC_033V 5 0 V MC_050V and the 12V MC_120V supply voltages and the chip voltages VCCP1 MC_VP1 and VCCP2 MC_VP2 Example FACT MON LIM MC_BT Response 50 55 Note the alarm limits for the temperature sensor are level limits i e a warning is given on reaching the first alarm level in the form of an alarm pending message On reaching the second upper limit the modulator ...

Страница 83: ...tion ESR No action IDN OPC No action OPC No action RST SRE No action SRE No action STB No action TST No action WAI No action 6 3 2 Required commands 6 3 2 1 SYSTem subsystem Command Parameter Status after Factory Reset Remarks ERRor Query only VERSion Query only 6 3 2 2 STATus subsystem Command Parameter Status after Factory Reset Remarks OPERation EVENt Query only No action CONDition Query only N...

Страница 84: ...s NAMe Name String data 6 3 3 4 DISPlay subsystem Command Parameter Status after Factory Reset Remarks CONTrast 0 to 100 25 Command Parameter Status after Factory Reset Remarks PRESet RECall 1 to 10 STORe 1 to 10 No query NAMe 1 to 10 Name Name string data format Query command format is PRES NAME System Preset No 1 to 10 DATE YYYY MM D 2002 01 01 TIME HH MM SS 00 00 00 OINStalled xxxx xxxx xxxx xx...

Страница 85: ...erarchical modulator REFerence SOURce ADETect EXTernal INTernal ADET PPS HIMPedance O_50 HIMP MHZ HIMPedance O_50 O_50 PPSTlevel 0 to 3 5 V 3 5 V REFerence Query only INPut BUFFerfill or INPut BUFFerfill HP Query only INPut BUFFerfill LP Low priority in an hierarchical system Query only TXIDent 0 to 65535 0 Only available in SFN version 6 3 3 6 OUTPut subsystem Command Parameter Status after Facto...

Страница 86: ...474 MHz if RF version LEVel 2 0 to 8 0 dB if IF Version 10 0 to 0 0 dB if RF version 0 0 BANDwidth 6 7 8 MHz 8 CRASter IUHF IVHF IUVH UCH short form IUHF IVHF IUVHF UCHANNEL long form IUHF Only in RF version The corresponding query replies are IUHF IVHF IUVHF UCHANNEL VSUB VHFB VHFL VHFI VHFB Only in RF version and VHF raster is selected UCDefinition Start channel Base frequency Start 21 Base freq...

Страница 87: ...formation is in string data format CURVe PRESet Preset No 1 to 10 Curve Description Pre corrector Gain Clip Level User point information real imag Query command format is PREC CURV PRES Preset No 1 to 10 CURVe CHECksum 0 to 10 Query only Note curve 0 indicates the active location CURVe RECall 1 to 10 6 3 3 9 LPRecorrect Linear Pre corrector subsystem Command Parameter Status after Factory Reset Re...

Страница 88: ... 2 OFF Query command provides serial port no to which MIP data is output If port no is 0 MIP data output is not active 6 3 3 11 ALARm subsystem Command Parameter Status after Factory Reset Remarks SDEFinition alarm condition alarm destination 0 to 13 any combination of M12E If alarm condition 0 definition applies to all alarm condition M Mute control 1 to 2 Relays 1 to 2 E Event Log STATus 1 to 13...

Страница 89: ... the format yyyy mm dd hh mm ss info Supplementary text string describing the event type 6 3 3 13 TEST subsystem Command Parameter Status after Factory Reset Remarks ENABle OFF SCARrier M1Carrier M50Carrier TSSTuffing OFF M1Carrier 1 to 1705 1 1 carrier in 2k mode 1 to 6817 1 1 carrier in 8k mode M50Carrier 1 to 1705 1 50 carrier in 2k mode 1 to 6817 1 50 carrier in 8k mode 6 3 3 14 FACTory subsys...

Страница 90: ...eter Fewer parameters were received than expected for the command 110 Command header error An error was detected in the command header 111 Header separator error A character which is not a legal header separator was encountered e g no white space followed the header thus SYST PRES NAME MACRO is an error 112 Program mnemonic too long The header contains more than twelve characters 113 Undefined hea...

Страница 91: ...e reason 170 Expression error There is an error in the expression received 6 4 2 Execution errors 299 200 Error Number Error string Description explanation example 200 Execution error 203 Command Protected Indicates that a legal protected program command or query could not be executed because the command was disabled 220 Parameter error Indicates that a program data element related error occurred ...

Страница 92: ...n error A communication error on the serial port was detected 361 Parity error in program message Parity bit not correct when data received on the serial port 362 Framing error in program message A stop bit was not detected when data was received e g a bad rate mismatch 363 Input buffer overrun Software or hardware input buffer on serial port overflows 6 4 4 Query errors 499 400 Error Number Error...

Страница 93: ... options and parameters The charts enclosed are Status Menu System Configuration Menu System page 1 of 2 Configuration Menu System page 2 of 2 All menu windows in the menu system contain a four digit number in the top right hand position This number is known as the menu identification number and is useful for referencing and navigating purposes and is shown in bold in the Menu System Charts The me...

Страница 94: ......

Страница 95: ...re from software version 1 1 to software version 2 0 3 0 30 01 2003 HSO Amendments made to reflect changes to the menu structure and introduction of new features event log This update only applies to modulator units based on ASIC technology SW release 3 02 3 1 13 03 2003 HSO Selection of SPI LVDS input via C input UBS logo and text references substituted for ProTelevision logo and text references ...

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