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Instruction Manual

TM

is a trademark of R.L. Drake LLC

is a registered trademark of R.L. Drake LLC

© Copyright 2007 R.L. Drake LLC P/N: 3852395C-09-2007 Printed in U.S.A.

DQT1000 Digital to QAM Transcoder

MQM1000 Multiplexing QAM Modulator

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Summary of Contents for DQT1000

Page 1: ...ual TM is a trademark of R L Drake LLC is a registered trademark of R L Drake LLC Copyright 2007 R L Drake LLC P N 3852395C 09 2007 Printed in U S A DQT1000 Digital to QAM Transcoder MQM1000 Multiplexing QAM Modulator ...

Page 2: ...ion to overturn The lightning flash with arrow head symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated dangerous voltage within the product s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons The exclamation point within an equilateral triangle is intended to alert the user to the presence of important op...

Page 3: ...m is grounded so as to provide some protection against voltage surges and built up static charges Article 810 of the National Electrical Code ANSI NFPA 70 provides information with regard to proper grounding of the mast and supporting structure grounding of the lead in wire to an antenna discharge unit size of grounding conductors location of antenna discharge unit connection to grounding electrod...

Page 4: ... 40 MHz to 1000 MHz Less than 12 dBmV 6 MHz BW 12 MHz 101 dBc 10 kHz offset 2400 4800 9600 or 19 200 baud interface via serial cable DB 9 connector for connection to modem or PC DB 9 connector for connection to addtional transcoders 90 132 VAC 60 Hz 40 W maximum 7 pounds 19 W x 1 75 H x 11 5 D 0 degrees C to 50 degrees C SPECIFICATIONS 6 Installation and Mounting Front Panel Controls 7 Rear Panel ...

Page 5: ...the processor mode with only one input the DQT1000 can process ATSC DVB or DigiCipher II compliant MPEG2 inputs that are either VSB or QAM modulated No multiplexing or altering of any MPEG tables is performed in this mode Used in the non multiplexing mode the data rate of the incoming signal can be any rate that falls within the specification range The output rate can be set to any fixed output ra...

Page 6: ...se the down and up arrow buttons to change the value of a viewed param eter setting The unit must be in the adjust mode with the display flashing in order for these buttons to become active for changing a parameter setting If the unit is not in the adjust mode pressing the up button will display the firmware version number or pressing the down button will display the output QAM symbol rate NOTE Th...

Page 7: ... IN DQT ONLY 54 to 864 MHz input for DEMOD B if installed From an off air antenna or CATV system R4 ASI INPUT B MQM only R5 ASI INPUT DQT only Optional DVB ASI format MPEG2 transport stream input If installed an ATSC stream from this input may be multiplexed with the stream from DEMOD A R1 R2 R3 R4 R5 R6 R7 R9 R6 FAN This cooling fan pulls air through the unit for cooling If this fan fails or is b...

Page 8: ...tings and then press ENTER to save and load all changes in one step OR you can store just one or several parameters at a time and reenter adjust mode to set the next Either method is acceptable Menu Item Parameter Setting Choices Top display line Second display line Use left right arrows Must be in adjust mode to change to navigate using up down arrows Demod A ChanMap CATV DQT IRC HRC Broadcast De...

Page 9: ...e desired symbol rate Use PRESET for off air VSB 8 signals MULTIPLEX This setting determines whether the DEMOD A input is to be multiplexed with a second input if in stalled Select DEMOD B to activate the B channel demodulator and to turn on the multiplex function Select ASI if the second input is present at the ASI input connector and it is desired to multiplex this ASI input stream with the stre...

Page 10: ...eam but are desired at some future time Note It is possible to select both programs with the same program number one from A and one from B as long as the INPUT B offset is set so that the B program number plus the offset amount does not duplicate a program number from the A input The offset is not included in the MPEG program number display being discussed above but the offset will be added to all...

Page 11: ...DigiCipher II 256 QAM CATV systems this is usually 5 3606 Ms s In DVB systems the rate would be 5 264 Ms s In any case the rate must be high enough to provide a data bitrate of at least 38 81 Mbps do not confuse this with the symbol rate If the set top box requires a fixed higher rate this may be manually set INTERLEAVER Sets the QAM modulator interleaver Choose among the available selections base...

Page 12: ...iding a channel with MPEG programs 1 2 3 4 and 5 in the stream and the MUX OFFSET is set to 10 then the new output signal will contain MPEG programs with program numbers of 1 2 11 12 13 14 and 15 If the set top is not looking for the right program number you will not receive any video ADDITIONALINFORMATION STANDBYMODE The DQT1000 and MQM1000 have a standby output mode which turns off the RF output...

Page 13: ...n working days after it arrives at R L DRAKE if we have all the facts If we must call you it may take longer R L DRAKE is not responsible for damage caused by lightning nonprofes sional alterations acts of God shipping damage poor storage handling etc R L DRAKE will make note of any shipping damage upon receipt You will need to send proof of purchase to receive warranty service Typically a copy of...

Page 14: ...portant to obtain proper performance from this product Therefore carefully read the Instruction Manual This warranty does not apply to any defect that R L DRAKE LLC determines is due to 1 Improper maintenance or repair including the installation of parts or accessories that do not conform to the quality and specifications of the original parts 2 Misuse abuse neglect or improper installation 3 Acci...

Page 15: ...R L Drake LLC 230 Industrial Drive Franklin Ohio 45005 U S A Customer Service and Parts Telephone 1 937 746 6990 Telefax 1 937 806 1576 World Wide Web Site http www rldrake com ...

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