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El producto satisface las necesidades del servicio t
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This is a good quality scan of the Operation & Maintenance (Service) Manual for the PAL version of this high-band broadcast umatic, BVU-800P
All schematics and lineup procedures appear to be included in this one manual AFAICT.
The file size is just over 113 MB which gives an idea of the quality and number of pages.
All of the schematics, which contain some fairly small print, are easily readable when you zoom into the page.
John Thompson, Newcastle Upon Tyne, England.
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Good quality, all schematics of few of models. There is also short form of user manual and regulation manual.
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Perfect copy of the service manual. you can enlarge every page, and it comes up
with all details.
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It´s very very nice manual with all, what i need. Original in good quality. Very fast business. Very much thanks...
SD-AT50H
WAVEFORMS OF 1-BIT CIRCUIT
2.00V/div AD IC Output 2.00V/div + Side
2.00 V/div
2.00 V/div
LEVEL SHIFT OUT
T
1 2
5V
T
2
5 6
DEAD TIME
1
- Side 500 ns/div Amplitude from 0 to 5 V 194.545465 µs 520 mV
50.0 ns/div
0.0 s
-12.30 V Dead time is generated by level shift input. Leading edge is delayed at CR, passing R at DI. Set value: 20 - 25 nsec.
ZOOM UP
2.00 V/div
2.00 V/div
10.0 V/div
10.0 V/div
3
2
+ FETOUT + SIDE
2
11
AD IC NF IN
T
12
1
- SIDE
1
4
500 ns/div
194.545465 µs
-12.30 V
500 ns/div Waveforms before low-pass filters at both ends of the speaker. H-bridge may be considered as BTL. However, here and at the gate drive, dead time is not observed; since bootstrap operates based on output, DEAD TIME part is in floating condition. The waveform on the HIGH side shows that only the booted voltage lowers.
194.545465 µs
-12.3 V
In partial pressure OUT, 4 to 7 V amplitude of GND reference is observed. In IC of 75 kohms, the reference is 2.5 V because of VREF. Due to imaginary GND of operational amplifier inside IC, the waveform cannot be monitored. This waveform is partial pressure OUT.
� 43 �
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