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TM 11-6625-3145-14
Theory of Operation-318/338 Service
PROBE COMPENSATION <4>
In the probe compensation mode, an external clock is supplied to the ACQ memory as data through A02U244A and
A02U244B gates. Channel 8 of the acquired data is used as the trigger, and channel 9 is used for data (U228-6,7 <3>).
The MPU recognizes over- or under-compensation from the acquired data of channel 9. (Channel 9 is the result of the
clock signal compared with Threshold A.)
4434-580
Figure 4-1. 318 Input A and Input B block diagram.
318 A03 ACQ CONTROL BOARD <5> <6> <7>
The A03 Acquisition Control board (parallel data) has two registers and memory that acquisition parameters are loaded
into before data acquisition. It also contains other circuitry that controls the trigger sequence and the acquisition memory.
Simplified block diagrams are shown is Figures 4-2 and 4-3.
Figure 4-2 shows a simplified version of all the circuitry on schematics <5> and <6>. Figure 4-3 shows a simplified version
of schematic <7>.
4-8
Содержание 318
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Страница 313: ...TM 11 6625 3145 14 Figure 7 19 Troubleshooting Tree 8 Data Acquisition ACQ A01 A02 Sheet 4 of 6 7 60 ...
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Страница 519: ...TM 11 6625 3145 14 318 338 4434 925 318 Acquisition Module Wiring Diagram ...
Страница 520: ...TM 11 6625 3145 14 318 338 4434 926 318 338 Mainframe Wiring Diagram ...
Страница 521: ...TM 11 6625 3145 14 318 338 4434 926 338 Acquisition Module Wiring Diagram ...
Страница 522: ...TM 11 6625 3145 14 318 338 4434 928 Figure 9 1 318 A01 Input A Board Component Locations ...
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Страница 528: ...TM 11 6625 3145 14 Figure 9 3 318 338 A03 ACQ Control Board Component Locations ...
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Страница 542: ...TM 11 6625 3145 14 Figure 9 8 318 338 A10 CRT Board Component Locations ...
Страница 544: ...TM 11 6625 3145 14 Figure 9 9 318 338 A11 Inverter Board component Locations ...
Страница 546: ...TM 11 6625 3145 14 Figure 9 10 318 338 A12 Regulator Board Component Locations ...
Страница 548: ...TN 11 6625 3145 14 Figure 9 11 318S1 338S1 A07 Serial RS232 Non Volatile Memory Board Component Locations ...
Страница 551: ...TM 11 6625 3145 14 Figure 9 12 338 A01 Input A Board Component Locations ...
Страница 553: ...TM 11 6625 3145 14 318 338 SERVICE ...
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Страница 555: ...PIN 058584 ...