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Controls and Connections
MT930B
Service Manual
Page 3-3
INTERNAL SWITCHES AND OPTIONS
FRONT
1.
SV01
—Two-position slide switch. Baseband Video Inversion switch. (Fac-
tory default position shown, adjacent to PCB marking “Normal”).
2.
SG01
— Two-position slide switch. Composite Video Inversion switch.
(Factory default position shown, adjacent to PCB marking “Nor-
mal”).
These switches invert video at baseband (sync tip up). They compliment the
front panel control that provides for inversion at IF. Setting both IF and baseband
switches to invert positions will result in non-inverted video output. An example
application: Teleports that are re-uplinking may desire inverted IF output and set
front panel control as needed. If this is the mode of routine operation, setting
SV01 or SG01 to “invert” position provides non-inverted video for local use.
3.
PCA Unit for Mathey Filter
—PC board included to allow future changes in
video filtering bandwidth or rolloff.
Содержание mt930b
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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 ...