9.Problems and solutions

No picture, no sound.

 

a. Check that all cables are correctly connected.

 

 

 

b. Check that the channel has been set correctly.

 

 

 

c. Check that the test pattern is received correctly.

The picture is far too bright.

 

Check that the jumper switch has been correctly

 

 

 

connected.

The picture is far too dark.

 

Check that the jumper switch has been correctly

 

 

 

disconnected.

Interference with other channels.

Select a different channel, preferably the middle channel

 

 

 

of 3 empty channels in the band.

Sound is distorted.

 

 

Turn down the volume on the connected appliance.

Infrared does not work.

 

a. Check that the infrared eye is in the correct position

 

 

 

on the sensor.

 

 

 

b. Check that the metal part of the infrared receiver is

 

 

 

correctly connected.

 

 

 

c. Check that the aerial wall outlets, aerial amplifiers

 

 

 

and splitters that are fitted IN the cabling between

 

 

 

your bedroom and living room are "return channel"

 

 

 

compatible (5 - 30 MHz).

 

 

 

10. Technical details

 

System:

PAL B/G

 

Input:

Video, Audio L+R (stereo carrier wave 5.5 – 5.742 MHz)

Output level:

82 dBµV at 75

Freq. Range:

UHF: 470 – 862 MHz

 

Channel 21 - 69

 

Band III + S-Band: 126 – 300 MHz (channel S4 - S20, E5 - E12)

Input connection loss:

< 1.5dB @ 800 MHz

Infrared reception:

40 kHz

 

Audio carrier wave:

5.5 and 5.742 MHz

Audio frequency range:

50 – 15 kHz

Supply voltage:

DC 9V / 300 mA

Dimensions (mm):

85.8 x 68.4 x 21.3

Modulation method:

Double sideband modulation

MEGAVIDEO55tm

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Marmitek 20068 / 300704 operating instructions Problems and solutions, Technical details