10
COMBFILTER OPERATION CHECK
•
Receive Philips circle test pattern. PICTURE»» MORE»»COMBFILTER by handset
•
Ensure the combfilter is ON using handset and watch the multiburst making sure there is no 'Cross Colour'.
•
Check "VERTICAL ENHANCEMENT" by watching horizontal edge of black and white.
•
Check the total picture quality.
VM OPERATION CHECK
•
Receive Philips circle pattern.
PICTURE»» MORE»» VM by handset
Check the bar width changes wider (see above ) when VM is switched ON by handset.
DTT MODULE FUNCTION CHECK LIST.
FUNCTION
Reception Lower
Channel (ch.21)
OK STATUS
Video Output
No error
RGB Output
No error, right colour
Audio Output
L/R out, No error
BER*
under 7.00E-003
Reception Centre
Channel (ch.41)
Video Output
No error
RGB Output
No error, right colour
Audio Output
L/R out, No error
BER*
under 7.00E-003
Modem
RS232
Output from Module
Indicate running software status correctly
Input to Module
Possible to input command
PCMCIA
Software Upgrade
from PC Card
Possible to upgrade
RF Output
Check the function of the RF output terminal for a gain of +2dB/-3dB.
Reduce the level of the digital test signal to -65dBm, there should be no blocking on screen. This test must
be performed with the +5V supply adjusted so that its voltage is set to the minimum, inside the tolerance i.e.
5.1V - 1% = 5.05 V.
OVER-LOAD PROTECTION CHECK.
•
To check for tripping during maximum load for picture, set a signal generator to Black to White bounce signal.
Summary of Contents for C28W40TN
Page 29: ...28 GENERAL BLOCK DIAGRAM ...
Page 91: ...90 CASE DE FONCTIONS EXTRÉMITÉ HAUTE CASE FONCTIONS EXTRÉMITÉ BASSE ...
Page 102: ...101 SCHÉMA SYNOPTIQUE ...
Page 165: ...164 HÖHERE FEATURE BOX NIEDRIGE FEATURE BOX ...
Page 177: ...176 BLOCKSCHALTBILD ...
Page 200: ...199 ...
Page 225: ...224 WAVEFORMS ...
Page 226: ...225 ...
Page 227: ...226 ...
Page 228: ...227 ...
Page 229: ...228 ...
Page 230: ...229 IC DATA I200 ...
Page 231: ...230 ...
Page 232: ...231 ...
Page 233: ...232 IE01 ...
Page 234: ...233 ...
Page 235: ...234 IE02 ...
Page 236: ...235 ...
Page 237: ...236 ...
Page 238: ...237 MECHANICAL ...
Page 239: ...239 C32W35TN ...
Page 240: ...240 C32W35TN ...
Page 241: ...241 C32W35TN ...
Page 242: ...242 CL28W35TAN ...
Page 243: ...243 CL28W35TAN ...
Page 244: ...244 CL28W35TAN ...
Page 245: ...245 CL32W35TAN ...
Page 246: ...246 CL32W5TAN ...
Page 247: ...247 C35W35TN CL28W35TAN CL32W5TAN ...
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Page 299: ...Users Guide C28W40TN C32W40TN ...
Page 351: ...notes ...
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Page 355: ...Users Guide C28W35TN C32W35TN S C R E E N S C R E E N ...