DRAKE MQM6000L Manual de instruções - Página 8

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Setup and Programming

Programming and viewing of the various setup and

operating parameters is accomplished using the front panel

back lit, two line, sixteen character wide LCD along with the

4 arrow buttons and the ENTER button. The name of the

parameter is on the top line of the display and the setting

value is on the bottom line.

To observe a certain parameter setting without intending to

change its value, just use the left and right arrow buttons to

navigate through the menus shown in the list. The current

setting for each parameter is shown on the bottom line of

the display. Note that depending upon certain settings,

some screens are not needed and will be skipped.

To make a change in the displayed parameter and its

setting and if this is the initial setup, you will want to enter

the 'adjust' mode. To do this, press the ENTER button that

is located in the center of the four arrow buttons and hold in

for several seconds until the display begins to flash. After

you are in the adjust mode (bottom line of screen flashing)

use the left and right arrows to navigate among screens

and use the up and down arrows to change the parameter

setting. When ENTER is pressed, the new settings will be

loaded and stored and the unit will exit the 'adjust' mode.

You may wish to not press ENTER until you have gone

through all screens and settings 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.

UNIT ID:

# (0 thru 63)

RS232 BAUDRATE: 2400

4800

9600

19,200

MPEG PROGRAMS: DEFAULT

SELECT PROGRAMS

QAM MODE:

QAM-16A

QAM-32A

QAM-64A

QAM-128A

QAM-256A

QAM-512A

QAM-1024A

QAM-64B

QAM-256B

QAM-1024B

GRAY ENCODING:

(This menu item only appears if

QAM modes QAM-16A thru QAM-

1024A are selected.)

DVB

DAVIC

QAM SYMRATE:

PRESET

MANUAL

QAM SYMRATE:

x.xxxx MSym/Sec (only in manual)

OUTPUT FORMAT:

NORMAL

STANDBY

PRBS 15

PRBS 15M

PRBS 24

PRBS 23M

OUTPUT CHANMAP:

BROADCAST

CATV

IRC

HRC

OUTPUT CHANNEL:

2 thru 69 (broadcast)

2 thru 158 (CATV)

1 thru 158 (IRC & HRC)

RF LEVEL:

xx.x dBmV (+30 to +42 dBmV)

UNIT ID: Select the desired unit identification number

when connecting the 'RS232 IN' connector to a PC or

modem for remote control using 'Drake Remote Control

Software'. Numbers 1 thru 63 may be used. If zero (0) is

selected, the PC will ignore the unit.

RS232 BAUD RATE: This setting determines the baud

rate at which the MQM6000L communicates with the

remote PC. Settings available are 2400, 4800, 9600 and

19,200. All units 'daisy chained' to the remote PC or

modem must be set to the same baud rate.

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 DEFAULT setting to multiplex the lowest

numbered (or only) MPEG program from each of the six

ASI inputs.

Choose the SELECT PROGRAMS setting to allow the

operator to pick which program (or no program) from each

of the six ASI inputs is to be included in the output multi-

plex. Only one program from each of the six inputs can be

selected. This selection must be made using a PC

connected to the RS232 IN port and running the 'Drake

Digital Headend Remote Control Software' program.

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.