User manual DRAKE DIGITAL MQM1000

[. . . ] DQT1000 Digital to QAM Transcoder MQM1000 Multiplexing QAM Modulator Instruction Manual TM is a trademark of R. L. Drake LLC is a registered trademark of R. L. Drake LLC P/N: 3852395C-09-2007 Printed in U. S. A. 2 Caution Statements WARNING: TO PREVENT FIRE OR ELECTRICAL SHOCK DO NOT EXPOSE TO RAIN OR MOISTURE A product and cart combination should be moved with care. Quick stops, excessive force and uneven surfaces may cause the product and cart combination to overturn. [. . . ] If DISABLED is selected, the next menu will be the QAM MODE menu, you may skip to that paragraph, below. MPEG PROGRAMS: This menu provides selections to determine which programs are multiplexed to form the new multiprogram transport stream output that will be supplied to the QAM modulator section. Choose the SELECT ALL PROGS setting to multiplex all programs from inputs A and B. It is the operator's responsibility to be sure that the total data rate of these programs does not exceed the maximum data rate for the output QAM mode that will be used. If the total input rate is too large, some programs will have to be dropped from the multiplex. Choose the SELECT PROGRAMS setting to allow the operator to pick which programs from the A and B inputs are to be included in the output multiplex. NOTE: At this point you may proceed through the remaining menus, below, before pressing the ENTER button to load the selected data OR you may press ENTER now and then come back to the rest of the menus. In any case, when the ENTER button is pressed, one of the following two actions will occur: A) If SELECT ALL PROGS has been selected, the DQT1000 will now read PAT tables from the two input streams and Gray Encoding: QAM Sym Rate: DQT, MQM QAM Sym Rate: DQT, MQM Interleaver: I128, J1 (Only if ITU-B selected. . . I128, J2 fixed at I12, J17 if ITU-A) I64, J2 I128, J3 I32, J4 I128, J4 I16, J8 I128, J5 I8, J16 I128, J6 I4, J32 I128, J7 I2, J64 I128, J8 I1, J128 Normal CW STANDBY PRBS 15 PRBS 15M PRBS 23 PRBS 23M CATV IRC HRC Broadcast # xx. x dBmV (45. 0 to 62. 0 dBmV) # (0 thru 63) 2400 4800 9600 19, 200 Output Format: Output ChanMap: OUTPUT CHANNEL: RF OUT: UNIT ID: RS232 Baud Rate: 10 Setup and Programming, continued 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 MPEG program numbers from the B input when they are added to the output multiplex. DEMOD B CHANMAP, DEMOD B CHANNEL, DEMOD B MODE, DEMOD B SYMRATE: See descriptions for DEMOD A above. These are equivalent settings for the DEMOD B demodulator input, when installed. INPUT B OFFSET: When the DEMOD B or ASI input has been installed and selected in the MULTIPLEX menu, this menu will be present. Because the two incoming transport streams are likely to have overlapping use of MPEG program numbers, the DQT861 or MQM861 will pass the program numbers from input A unchanged and an offset, equal to the value chosen in this menu, will be added to the program number of programs from the second input. This same offset value will also be added to the minor channel number in the VCT table for programs from the second input source. Usually an offset of 10 will be adequate but if you know there are programs in the signal input to input A using program numbers above 10, a higher offset may be required. Values between and 10 and 90, in increments of 10, are available for selection. When it is known that there is no overlap between input A and input B stream program numbers, a 0 offset setting can be used. Be cautious if this is the selection that is chosen. PSIP: This menu provides a choice of how the unit organizes the PSIP information from two ATSC streams that are being multiplexed. In the ENABLED setting, information from the MGT and VCT tables from both signals will be used to build a new table for the combined output signal. Both input streams must have these tables present in order for the unit to be able to perform this operation. [. . . ] DRAKE is not responsible for damage caused by lightning, nonprofessional alterations, "acts of God" shipping damage, poor , storage/handling, etc. 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 the invoice from an R. L. [. . . ]