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Maintenance
Page 6-34
Service Manual
MT930B
10285
Figure 6-19. Pass Characteristics
10286
Figure 6-20. Delay Characteristics
3. Turn LF33, LF36, and LF37 (LF73, LF76, and LF77) cores, to adjust the
pass-thru bandwidth and delay characteristics values (so they lie within the
frame). If adjustment is impossible, using only the above cores, turn cores
LF31 and LF35 (LF71 and LF75) to compensate. If adjustment is still im-
possible, turn LF32 (LF72) and LF34 (LF74) to compensate.
Be sure to adjust so the delay is nearly the same height as the left and right
peaks.
4. Adjust the IF BW 27 MHz Ku filter the same as in step 3. The cores to be
adjusted are those indicated inside the parentheses in step 3.
Adjustment Specifications:
−−−−
Deviation Within Pass-thru Bandwidth 70 MHz
±
12.0 MHz:
±
0.3 dB
−−−−
Delay deviation 70 MHz
±
10.0 MHz: 2 nsec
−−−−
–3 dB bandwidth 70 MHz
±
18.0 MHz:
±
0.75 MHz
Содержание mt930b
Страница 3: ...MT930B Service Manual Page i ...
Страница 10: ...General Information Page 1 4 Service Manual MT930B THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 22: ...Controls and Connections Page 3 4 Service Manual MT930B THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 86: ...Options Maintenance Page 7 2 Service Manual MT930B THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 90: ...Drawings Page 9 2 Service Manual MT930B 10264 Figure 9 1 MT930B Block Diagram 1 ...
Страница 91: ...Drawings MT930B Service Manual Page 9 3 10265 Figure 9 2 MT930B Block Diagram 2 ...
Страница 92: ...Drawings Page 9 4 Service Manual MT930B 10266 Figure 9 3 MT930B Block Diagram 3 ...
Страница 93: ...Drawings MT930B Service Manual Page 9 5 10267 Figure 9 4 MT930B Block Diagram 4 ...
Страница 94: ...Drawings Page 9 6 Service Manual MT930B 10268 Figure 9 5 MT930B Head Phone Schematic ...
Страница 95: ...Drawings MT930B Service Manual Page 9 7 10269 Figure 9 6 MT930B RF PC Board Schematic ...
Страница 96: ...Drawings Page 9 8 Service Manual MT930B 10270 Figure 9 7 MT930B Converter Module Schematic ...
Страница 97: ...Drawings MT930B Service Manual Page 9 9 10271 Figure 9 8 MT930B Main PC Board Sheet 1 of 3 ...
Страница 98: ...Drawings Page 9 10 Service Manual MT930B Figure 9 9 MT930B Main PC Board Sheet 2 of 3 ...
Страница 99: ...Drawings MT930B Service Manual Page 9 11 10273 Figure 9 10 MT930B Main PC Board Sheet 3 of 3 ...
Страница 100: ...Drawings Page 9 12 Service Manual MT930B 10274 Figure 9 11 MT930B Power Supply Schematic ...
Страница 101: ...Drawings MT930B Service Manual Page 9 13 10275 Figure 9 12 MT930B IF Filter Block Schematic ...
Страница 102: ...Drawings Page9 14 Service Manual MT930B 10276 Figure 9 13 MT930B Audio IF PB01 Schematic ...
Страница 103: ...Drawings MT930B Service Manual Page 9 15 10277 Figure 9 14 MT930B Audio Out Schematic ...
Страница 104: ...Drawings Page 9 16 Service Manual MT930B 10278 Figure 9 15 MT930B Audio PW01 PC Board Schematic ...