TV MODULATORS MT47, MT57

PRODUCT DESСRIPTION

Modulator MT47 is intended to form TV channels of B/G/D/K/I/L/M/N/Australia standards in VHF and UHF ranges.

Modulator MT57 is intended to form TV channels of B/G/Australia MONO/STEREO A2 and D/K/I/L/M/N MONO standards in VHF and UHF ranges.

Broadcasting signal has double sideband modulation.

The modulators are intended for indoor use only.

RoHS compliant.

SAFETY INSTRUCTIONS

Installation of the modulator must be done according local safety standards.

The modulator is powered from mains 230V~. This voltage is dangerous to life.

Any repairs must be done by a qualified personnel.

To avoid the electric shock follow these instructions: do not remove the cover of the power supply section, without isolating the unit from the mains supply; do not plug the modulator into the mains supply if the power cord or plug are damaged; do not plug the modulator into the mains supply until all cables have been connected correctly; to disconnect the modulator, disconnect plug from mains socket.

the mains socket must be easily accessible; modulator shall not be exposed to dripping or splashing water and no objects filled with liquids, such as vases, shall be placed on it; avoid placing modulator next to central heating components and in areas of high humidity; no naked flame sources, such as lighted candles, should be placed on modulator; if the modulator has been kept in cold conditions for a long time, keep it in a warm room no less than 2 hours before plugging into the mains; the ventilation should not be impeded by covering the ventilation openings with items, such as newspapers, table-cloths, curtains; mount the modulator in vertical position with power supply located on the left; from top, front and bottom of installed modulator must be at least 10 cm free space.

This product complies with the relevant clauses of the European Directive 2002/96/EC. The unit must be recycled or discarded according to applicable local and national regulations.

EXTERNAL VIEW AND OPERATING CONTROLS

Kjaerulff 1 Digital A/S, C.F. Tietgens Boulevard 19, DK-5220 Odense SØ, Denmark, Phone: + 45 66 13 54 80, Fax: + 45 66 13 54 10

Figure 1.

1 - AUDIO L - audio left channel signal input connector (RCA type)

2 - AUDIO R - audio right channel signal input connector (RCA type)

3 - VIDEO - video signal input connector (RCA type)

4 - RF OUT - RF signal output connector (F type)

5 - RF IN - RF signal input connector (F type)

6 - RF OUT - RF output signal level regulator

8 - POWER - power indicator

9 - screwdriver

10 - power cord

11 - AUDIO - sound subcarrier deviation regulator (for MT47 only)

INSTALLATION INSTRUCTIONS

Read the safety instruction first.

To change the modulator settings, open the plastic cover.

If RF IN connector on the modulator is not used, connect the 75 Ω load supplied.

When modulators are cascading, space between channels must be no less than two (for example 21, 24, 27 and etc.).

To wall mount the modulator - screw the modulator to the wall (see figure 1).

Do not connect TV antennas to modulator RF IN connector directly. If you intend to combine TV signals of antennas

and the modulator, plug in booster with output-to-input isolation ≥20 dB between antenna output and RF IN connector.

DEFAULT SETTINGS

1. Output channel E02;

2. Audio subcarrier deviation ±50 kHz (when audio signal level 1 kHz is 775 mV);

3. B/G standard; audio subcarrier 5.5 MHz (Preset b5);

4. Test pattern generator OFF (Preset no);

5. Frequency shift none (Preset 0);

6. P/S ratio -16 dB (Preset I6);

7. Output signal on (Preset on);

8. Sound subcarriers deviation regulator (Preset 0, for MT57);

9. Sound mode STEREO (Preset A5, for MT57).

OPERATING

CHANGING OF SETTINGS

The modulator has two modes of operating:

1. normal: sets after plug in;

Output channel can be selected in normal mode by pressing buttons “-“ or “+” (see tables 2-11).

2. setting: to enter the setting mode press and hold “-“ and “+” buttons simultaneously for 1 second, to exit setting mode press and hold “-“ and “+” buttons simultaneously for 1 second.

Select of necessary to change parameter by pressing button “-“ and set necessary mode by pressing “+” button.

1. TV system setting: a) after switching settings mode, indicator displays current TV system (see table 1); b) set necessary TV system by pressing “-“ button (see tables 2-11); c) after TV system changing, modulator sets to first channel of selected TV system (see tables 2-11), other settings remains unchanged.

2. test pattern generator: a) press “-“ button; b) switching between OFF and ON by pressing button “+”, “no” - test pattern generator OFF, “t5” - test pattern generator ON.

3. fine tuning of video carrier frequency: a) press button “-“; b) shift video carrier frequency by pressing button “+” (see table 12).

4. picture/sound ratio switching: a) press button “-“; b) switching between 12 dB and 16 dB by pressing button “+”.

5. output signal switching: a) press button “-“; b) switching between RF ON and RF OFF by pressing button “+”, “on” - RF ON, “oF” - RF OFF.

6. sound subcarriers deviation regulation (for MT57): a) press button “-“; b) set necessary deviation by pressing button “+“ (see table 13).

7. STEREO/MONO mode switching (for MT57): a) press button “-“; b) switch between MONO/STEREO mode by pressing button “+“ ("A-" - mono, "A5"- stereo).

To prevent unauthorized access press buttons "-" and "+" simultaneously twice in 0.5 sec. "LO" will briefly be displayed.

To revert to normal operation, repeat above procedure. "UL" will briefly be displayed. The symbol "LO" appears, if you try to change settings in locked mode.

SOUND SUBCARRIER DEVIATION SETTING

MT47: When input signal level is from 340 mV to 775 mV in both audio inputs, use a regulator (figure 1, position 11) to set the sound subcarrier deviation ±50 kHz. The factory set sound subcarrier deviation is ±50 kHz for an input signal level of

775 mV in both audio inputs.

MT57: The factory set sound subcarier deviation is ±50 kHz for an input signal 1 kHz/775 mV in both audio inputs

(Preset 0). Use software control for audio deviation regulation ±6 dB (see table 13).

OUTPUT SIGNAL LEVEL ADJUSTMENT

Use a regulator (figure 1, position 6) to adjust an output level. Output level adjustment range is 0 ÷ -20 dB.

2 7

6

INSTALLATION EXAMPLE

TECHNICAL CHARACTERISTICS

Type MT47 MT57

Video input frequency range

level/impedance

Audio input frequency range level adjustment

RF output

20 Hz - 6 MHz

1 V ± 0.1 dB/75 Ω

20 Hz - 15 kHz

0 ÷ 7 dB ± 6 dB by 2 dB step pr.

level/impedance/deviation* 2x775 mV RMS/10 kΩ/50 kHz* level (typical)/impedance

2x775 mV RMS/10 kΩ/50 kHz**

85 dBµV/75 Ω

0 ÷ -20 dB level adjustment output channels according channels charts pr.

frequency range pr.

Sound subcarrier frequency pr.

Fine tuning range of video carrier frequency pr.

Combining through loss

Frequency range of RF combining

A/V ratio

Amplitude modulation depth, typical pr.

Signal/noise ratio, weighted

Power consumption

B/G/D/K/H/I/L/M/N/Australia

45-84 MHz, 170-300 MHz, 470-862 MHz

4.5 MHz, 5.5 MHz, 6.0 MHz, 6.5 MHz B/G/Australia stereo A2***

±2.25 MHz max. by 0.25 MHz step

2.5 dB

5-862 MHz

198-250 V~ 50 Hz 3 W

12/16 dB

81 %

≥ 55 dB

198-250 V~ 50 Hz 4 W

Operating temperature range

Dimensions/Weight (packed)

-10 o ÷ + 50 o C

133x73x39 mm/0.36 kg

+0 o ÷ + 50 o C

* available to set standard deviation ± 50 kHz of sound carrier when input level 340 mV÷775 mV in both audio inputs

** available to set standard deviation ± 50 kHz of sound carrier when input level 388 mV÷1545 mV RMS in both audio inputs

*** second sound subcarrier frequency 5.742 MHz pr.

software control

3

TV system setting

Table 1.

TV system

B/G

D/K

Australia

M

N

L

I

Displayed Audio subcarrier b5 d6

5.5 MHz

6.5 MHz

A5 i6

L6

J4

U4

5.5 MHz

6.0 MHz

6.5 MHz

4.5 MHz

4.5 MHz

Video standard

PAL

PAL, SECAM

PAL

PAL

SECAM

NTSC

NTSC

VHF BAND I, III CHANNELS

Table 2

SYSTEM: B, G

Band Channel Displayed Vision C. Audio C.

E1 01 45,25 50,75

BI

BIII

E2

E3

E4

E5

E6

E7

E8

E9

E10

E11

E12

S2 S11

S12

S13

S14

S15

S16

S17

S18

S19

S20

02

03

04

05

06

07

08

09

10

11

210,25 215,75

217,25 222,75

12 224,25 229,75

71 231.25 236.75

72

73

74

75

76

77

78

79

80

48,25 53,75

55,25 60,75

62,25 67,75

175,25 180,75

182,25 187,75

189,25 194,75

196,25 201,75

203,25 208,75

238.25 243.75

245.25 250.75

252.25 257.75

259.25 264.75

266.25 271.75

273.25 278.75

280.25 285.75

287.25 292.75

294.25 299.75

Table 4

SYSTEM: I/South Africa

Band Channel Displayed Vision C. Audio C.

III 4

5

6

7

8

9

10

11

12

13

04

05

06

07

08

09

10

11

12

13

175.25 181.25

183.25 189.25

191.25 197.25

199.25 205.25

207.25 213.25

215.25 221.25

223.25 229.25

231.25 237.25

239.25 245.25

247.25 253.25

Table 6

SYSTEM: L, France

Band Channel Displayed Vision C. Audio C.

L05

BIII

L06

L07

L08

L09

L10

Inter- L

bande M

N

O

P

Q

05 176,00 182,50

06

07

08

09

10

184,00 190,50

71 236.75 243.25

72

73

74

75

76

192,00 198,50

200,00 206,50

208,00 214,50

216,00 222,50

248.75 255.25

260.75 267.25

272.75 279.25

284.75 291.25

296.75 303.25

4

Table 7

SYSTEM: M, Japan

Band Channel Displayed Vision C. Audio C.

BIII

J4

J5

J6

J7

J8

J9

J10

J11

J12

04 171,25 175,75

05

06

07

08

09

10

11

12

177,25 181,75

183,25 187,75

189,25 193,75

193,25 197,75

199,25 203,75

205,25 209,75

211,25 215,75

217,25 221,75

Table 3

SYSTEM: D, K

Band Channel Displayed Vision C. Audio C.

BI/II

BIII

C1

C2

C3

C6

C7

C8

C9

C10

C11

C12

SR2/ SR11

SR3 SR12

SR13

SR14

SR15

SR16

SR17

SR18

S19

01 49,75 56,25

02

03

06

07

08

09

10

11

12

71

72

73

74

75

76

77

78

79

59,25 65,75

77,25 83,75

175,25 181,75

183,25 189,75

191,25 197,75

199,25 205,75

207,25 213,75

215,25 221,75

223,25 229,75

231.25 237.75

239.25 245.75

247.25 253.75

255.25 261.75

263.25 269.75

271.25 277.75

279.25 285.75

287.25 293.75

295.25 301.75

Table 5

SYSTEM: B, Australia

Band Channel Displayed Vision C. Audio C.

BI D1

BIII

D2

D6

D7

D8

D9

D10

D11

D12

Hyper S11 band S12

S13

S14

S15

S16

S17

S18

S19

S20

01 57,25 62,75

02

06

07

08

09

64,25 69,75

175,25 180,75

182,25 187,75

189,25 194,75

196,25 201,75

210,25 215,75 10

11

12

217,25 222,75

224,25 229,75

81 231.25 236.75

82 238.25 243.75

83

84

85

86

87

88

89

90

245.25 250.75

252.25 257.75

259.25 264.75

266.25 271.75

273.25 278.75

280.25 285.75

287.25 292.75

294.25 299.75

Table 8

SYSTEM: N, USA

Band Channel Displayed Vision C. Audio C.

Low

High

2

3

4

5

A7

A8

A9

A10

A11

A12

A13

02 55,25 59,75

03

04

05

07

08

09

10

11

12

13

61,25 65,75

67,25 71,75

77,25 81,75

175,25 179,75

181,25 185,75

187,25 191,75

193,25 197,75

199,25 203,75

205,25 209,75

211,25 215,75

UHF BAND IV AND BAND V CHANNELS

Table 9

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

61

62

63

64

65

66

67

68

69

70

71

72

73

74

75

SYSTEM: B, Australia

Band Channel Displayed Vision C. Audio C.

IV 20

V

21

22

23

24

25

26

27

28

20 471.25 476.75

21

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

478.25 483.75

485.25 490.75

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

73

74

75

492.25 497.75

499.25 504.75

506.25 511.75

513.25 518.75

520.25 525.75

527.25 532.75

534.25 539.75

541.25 546.75

548.25 553.75

555.25 560.75

562.25 567.75

569.25 574.75

576.25 581.75

583.25 588.75

590.25 595.75

597.25 602.75

604.25 609.75

611.25 616.75

618.25 623.75

625.25 630.75

632.25 637.75

639.25 644.75

646.25 651.75

653.25 658.75

660.25 665.75

667.25 672.75

674.25 679.75

681.25 686.75

688.25 693.75

695.25 700.75

702.25 707.75

709.25 714.75

716.25 721.75

723.25 728.75

730.25 735.75

737.25 742.75

744.25 749.75

751.25 756.75

758.25 763.75

765.25 770.75

772.25 777.75

779.25 784.75

786.25 791.75

793.25 798.75

800.25 805.75

807.25 812.75

814.25 819.75

821.25 826.75

828.25 833.75

835.25 840.75

842.25 847.75

849.25 854.75

856.25 861.75

FINE TUNING

Table 12

Displayed Shift

MHz

0

1

2

3

4

5

6

7

8

9

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

+0.25

+0.5

+0.75

+1.0

+1.25

+1.5

+1.75

+2.00

+2.25

-2.25

-2.00

-1.75

-1.5

-1.25

-1.0

-0.75

-0.5

-0.25

Table 13

Displayed Audio

0

2

4

6

-6

-4

-2 level, mV/dB

775/0

615/+2

490/+4

388/+6

1545/-6

1227/-4

975/-2

Table 10

SYSTEMS: M, N

Channel Vision C. Audio C. Channel Vision C. Audio C.

J4 U4 J4 U4

13 14 471.25 475.75 46 47 669.25 673.75

14 15 477.25 481.75 47 48 675.25 679.75

15 16 483.25 487.75 48 49 681.25 685.75

16 17 489.25 493.75 49 50 687.25 691.75

17 18 495.25 499.75 50 51 693.25 697.75

18 19 501.25 505.75 51 52 699.25 703.75

19 20 507.25 511.75 52 53 705.25 709.75

20 21 513.25 517.75 53 54 711.25 715.75

21 22 519.25 523.75 54 55 717.25 721.75

22 23 525.25 529.75 55 56 723.25 727.75

23 24 531.25 535.75 56 57 729.25 733.75

24 25 537.25 541.75 57 58 735.25 739.75

25 26 543.25 547.75 58 59 741.25 745.75

26 27 549.25 553.75 59 60 747.25 751.75

27 28 555.25 559.75 60 61 753.25 757.75

28 29 561.25 565.75 61 62 759.25 763.75

29 30 567.25 571.75 62 63 765.25 769.75

30 31 573.25 577.75 64 771.25 775.75

31 32 579.25 583.75 65 777.25 781.75

32 33 585.25 589.75 66 783.25 787.75

33 34 591.25 595.75 67 789.25 793.75

34 35 597.25 601.75 68 795.25 799.75

35 36 603.25 607.75 69 801.25 805.75

36 37 609.25 613.75 70 807.25 811.75

37 38 615.25 619.75 71 813.25 817.75

38 39 621.25 625.75 72 819.25 823.75

39 40 627.25 631.75 73 825.25 829.75

40 41 633.25 637.75 74 831.25 835.75

41 42 639.25 643.75 75 837.25 841.75

42 43 645.25 649.75 76 843.25 847.75

43 44 651.25 655.75 77 849.25 853.75

44 45 657.25 661.75 78 855.25 859.75

45 46 663.25 667.75

Table 11

SYSTEMS: I, G, H, K, L

Band Channel Vision C. Audio C. Audio C. Audio C.

Stand.G,H Stand.I Stand.K,L

IV 21 471.25 476.75 477.25 477.75

22 479.25 484.75 485.25 485.75

23 487.25 492.75 493.25 493.75

24 495.25 500.75 501.25 501.75

26 511.25 516.75 517.25 517.75

27 519.25 524.75 525.25 525.75

28 527.25 532.75 533.25 533.75

29 535.25 540.75 541.25 541.75

30 543.25 548.75 549.25 549.75

31 551.25 556.75 557.25 557.75

32 559.25 564.75 565.25 565.75

33 567.25 572.75 573.25 573.75

34 575.25 580.75 581.25 581.75

35 583.25 588.75 589.25 589.75

36 591.25 596.75 597.25 597.75

37 599.25 604.75 605.25 605.75

V 38 607.25 612.75 613.25 613.75

39 615.25 620.75 621.25 621.75

40 623.25 628.75 629.25 629.75

41 631.25 636.75 637.25 637.75

42 639.25 644.75 645.25 645.75

43 647.25 652.75 653.25 653.75

44 655.25 660.75 661.25 661.75

45 663.25 668.75 669.25 669.75

46 671.25 676.75 677.25 677.75

48 687.25 692.75 693.25 693.75

49 695.25 700.75 701.25 701.75

50 703.25 708.75 709.25 709.75

51 711.25 716.75 717.25 717.75

52 719.25 724.75 725.25 725.75

53 727.25 732.75 733.25 733.75

54 735.25 740.75 741.25 741.75

55 743.25 748.75 749.25 749.75

56 751.25 756.75 757.25 757.75

57 759.25 764.75 765.25 765.75

58 767.25 772.75 773.25 773.75

59 775.25 780.75 781.25 781.75

60 783.25 788.75 789.25 789.75

61 791.25 796.75 797.25 797.75

62 799.25 804.75 805.25 805.75

63 807.25 812.75 813.25 813.75

64 815.25 820.75 821.25 821.75

65 823.25 828.75 829.25 829.75

66 831.25 836.75 837.25 837.75

68 847.25 852.75 853.25 853.75

69 855.25 860.75 861.25 861.75

5