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10

Instruction Manual

4.3 Main Interactive Sequence

The main interactive sequence is where all the core module programming is performed. This sequence is accessed when a 
user depresses one of the     (L) or     (R) and     (UP)     (DN) buttons on the keypad. The following diagram depicts the LCD 
screens available in the main interactive sequence. 

QAM MODE
ITU-A

ENCODER
DVB

QAM
64

ALPHA
15%

INTERLV
I12, J17

Main Interactive Sequence

ITU-A

ITU-B

DISPLAY

ONLY

DISPLAY

ONLY

(DISPLAYED IN
NORMAL MODE
ONLY)

DVB

DAVIC

12

15

18

16

32

64

128

256

512

1024

INPUT
ASI

Version
1.6b AQM

BIT RATE
41.205 M

RF OUT
NTSC 100

OUTPUT
509.0875

QAM OUT
NORMAL

ASI

PRBS 23M

PRBS 23

PRBS 15M

PRBS 15

NTSC

MHz

(NTSC RANGE 
IS CH 2-135, 
6 MHz STEPS)

(FREQ RANGE 
IS 54-864 MHz, 
12.5 kHz STEPS)

NORMAL

INVERTED

OFF

CW

NTSC 134

509.0875

(NTSC MODE 
DISPLAYS CH #)

(MHz MODE 
DISPLAYS ACTUAL
CENTER FREQ)

BD Rate
5.0000 M

RANGE IS

1 TO 6.9M

 

I128,J1

I128,J2

I128,J3
I128,J4
I128,J5
I128,J6
I128,J7

I128,J8
I64,J2
I32,J4
I16,J8
I8,J16
I4,J32
I2,J64
I1,J128

ITU-B

I12,J17

I17,J12

I34,J6
I51,J4
I68,J3
I102,J2
I204,J1

I1,J204
I2,J102
I3,J68
I4,J51
I6,J34

ITU-A

OUT LVL
40 dBmV

RANGE IS

28-42 dBmV

Note:

 Factory reset Default values shown in illustration.

 4.4 Programming a variable

1.   When at a screen whose variable needs to be changed, depress the eNTeR button until the blinking cursor is displayed. 
2.   After the blinking cursor is displayed simply press the     (UP) or    (DN) buttons to increment or decrement to the 

appropriate desired value. 

3.  Press the eNTeR button again to save the change. The corresponding AQM module stores the new information. 

▼         

Summary of Contents for 6271B

Page 1: ...ations are subject to change without notice Trademarks are the property of their respective owner AQM Series Agile QAM Modulator Model Stock No Description AQM 6271B Agile QAM Modulator Accessories Model Stock No Description MIPS 12C 7722C Power Supply MIRC 12V 7715 Chassis 651215600D Status Date Document No Issue No Author Active June 19 2009 651215600D 4 AB Obsolete March 3 2008 651215600C 3 CF ...

Page 2: ...e Laboratories Inc One Jake Brown Road Old Bridge NJ 08857 Document Number 651215600D Printed in the United States of America All product names trade names or corporate names mentioned in this document are acknowledged to be the proprietary property of the registered owners This product incorporates copyright protection technology that is protected by U S patents and other intellectual property ri...

Page 3: ...n 8 SECTION 4 installation power up 9 4 1 operating interface instructions 9 4 2 boot up display sequence 9 4 3 main interactive sequence 10 4 4 programming a variable 10 SECTION 5 interactive sequence detail 11 5 1 qam mode 11 5 2 encoder 11 5 3 qam 11 5 4 alpha 11 5 5 interleaver 11 5 6 baud rate 11 5 7 input 11 5 8 rf out 12 5 9 output 12 5 10 qam out 12 5 11 output level 12 5 12 bit rate 12 5 ...

Page 4: ...ns before you operate the unit Retain all safety and operating instructions for future reference Heed all warnings on the unit and in the safety and operating instructions WARNING TO PREVENT FIRE OR SHOCK HAZARD DO NOT EXPOSE THIS UNIT TO RAIN OR MOISTURE NOTE TO CATV SYSTEM INSTALLER This reminder is provided to call the CATV System Installer s attention to Article 820 40 of the NEC that provides...

Page 5: ...fault protection For added protection during a lightning storm or when the unit is left unattended and unused for long periods of time unplug it from the wall outlet and disconnect the lines between the unit and the antenna This will prevent damage caused by lightning or power line surges Do not locate the antenna near overhead power lines or other electric light or power circuits or where it can ...

Page 6: ...modulator supports QAM modes 256 512 1024 Additionally if needed the built in bit stuffing circuitry ensures that Null Packets are inserted into the ASI transport stream to ensure the correct baud rate is transmitted Compact design allows 6 modules in a 2 RU rack chassis DVB ASI Input complies with DVB ASI standards Improve bandwidth efficiency with support for all advanced QAM Modes including 256...

Page 7: ...12V GND P O W E R 2 1 3 MIPS 12 POWER SUPPLY STOCK NO 7722C POWER UP DN L R ENTER AQM UP DN L R ENTER AQM UP DN L R ENTER AQM UP DN L R ENTER AQM UP DN L R ENTER AQM UP DN L R ENTER AQM MIRC 12V Chassis with MIPS 12C Power Supply MIPS 12C Power Supply Connections All the connectors on the power supply are located on the rear panel 1 2 1 AC Input The power supply is available in 110 VAC 60 Hz and 2...

Page 8: ...12 dB Spectral Inversion Auto Recognition Carrier Suppression 55 dB SNR Greater than 40 dB MER Greater than 40 dB I Q Phase Error Less than 1 degree I Q Amplitude Imbalance Less than 1 Dimensions W x D x H AQM Module Power Supply Rack Chassis 2 3 x 7 5 x 3 5 inches 58 x 191 x 89 mm 4 6 x 7 5 x 3 5 inches 106 x 191 x 89 mm 19 0 x 12 0 x 3 5 inches 483 x 305 x 89 mm Power MIPS 12C MIPS 12C PAL 110 V...

Page 9: ...r up For safe and reliable operation the power supply requires a proper ground connection for the third prong of the unit s power cord plug 4 2 Boot Up Display Sequence When the unit is in Normal Mode and is first plugged in for use the AQM checks for the presence of input data If data is not detected it displays the appropriate module condition on the LCD readout as depicted below No Input Data T...

Page 10: ...5 6 MHz STEPS FREQ RANGE IS 54 864 MHz 12 5 kHz STEPS NORMAL INVERTED OFF CW NTSC 134 509 0875 NTSC MODE DISPLAYS CH MHz MODE DISPLAYS ACTUAL CENTER FREQ BD Rate 5 0000 M RANGE IS 1 TO 6 9M I128 J1 I128 J2 I128 J3 I128 J4 I128 J5 I128 J6 I128 J7 I128 J8 I64 J2 I32 J4 I16 J8 I8 J16 I4 J32 I2 J64 I1 J128 ITU B I12 J17 I17 J12 I34 J6 I51 J4 I68 J3 I102 J2 I204 J1 I1 J204 I2 J102 I3 J68 I4 J51 I6 J34 ...

Page 11: ...ver is user selectable Various choices are available depending on the Operation Mode The standard settings are as follows ITU A I 12 J17 ITU B I 128 J1 5 6 Baud Rate The Baud Rate needs to be programmed based on the Input Data and QAM Mode used The range is from 1 to 6 9 MBaud 5 7 Input The Input Signal is fed to the module via the BNC connector on the rear panel For normal operation use ASI Async...

Page 12: ...Appendix A for more detail 5 11 Output Level The AQM features electronic output level control The output level can be adjusted in any of the QAM modes listed above The output level is displayed and measured as an average value See Appendix A for more detail The output level for a QAM CW is a true representation of a QAM signal level The output level range is 30 dBmV to 40 dBmV 5 12 Bit Rate This i...

Page 13: ...signal level for the QAM carrier The AQM is capable of supplying the output QAM signal in CW mode This simplifies the level measurement process dramatically because the level does not need to be adjusted for the limitation in analyzer bandwidth settings After setting the appropriate level in CW mode the unit is changed back to normal mode Any meter that can measure CW Carrier Power Level can be us...

Page 14: ...57 2500 461 7500 BBB 64 463 2500 467 7500 CCC 65 469 2500 473 7500 DDD 66 475 2500 479 7500 EEE 67 481 2500 485 7500 FFF 68 487 2500 491 7500 GGG 69 493 2500 497 7500 HHH 70 499 2500 503 7500 III 71 505 2500 509 7500 JJJ 72 511 2500 515 7500 KKK 73 517 2500 521 7500 LLL 74 523 2500 527 7500 MMM 75 529 2500 533 7500 NNN 76 535 2500 539 7500 OOO 77 541 2500 545 7500 PPP 78 547 2500 551 7500 79 553 2...

Page 15: ...istered trademarks of Motorola Corp Blonder Tongue Laboratories Inc Limited Warranty Blonder Tongue Laboratories Inc BT will at its sole option either repair or replace with a new or factory reconditioned product as BT may determine any product manufactured by BT which proves to be defective in materials or workmanship or fails to meet the specifications which are in effect on the date of shipment...

Page 16: ...One Jake Brown Road Old Bridge NJ 08857 1000 USA 800 523 6049 732 679 4000 FAX 732 679 4353 www blondertongue com ...

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