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UTAMADUNI NA HISTORIA
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MICHEZO
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VAZI
Oscilloscope: Two-Channel Digital, with a Delay per Channel and a Common Delay (Anritsu, US 4,727,288, 1988)
A two-channel digital oscilloscope. Each channel has its own converter and delay circuit. One knob, with a main and a sub button, sets the delays. The sub button shifts only the sub channel's wave, so you can line it up against the main one. The main button shifts both waves together and keeps the gap between them.
Result: a 2-channel digital oscilloscope that can move both traces along the time base without losing their phase difference.
Source: K. Nakatsugawa et al. (Anritsu), US 4,727,288 (1988). Unknown: sample rate, bandwidth, memory size and the display. Picture: the patent drawing.
Mtaalamu
Unknown
Maagizo
1
1
Convert the two channels
Convert the two channels
Bring the main channel and the sub channel each to its own analog-to-digital converter. Ours: BNC sockets. Not given: the sample rate, the bandwidth.
Vifaa kwa hatua hii:
Kigeuzi cha Analogi kuwa Dijitali2 main and sub converters
Seti ya viunganishi vya koaksia (BNC / SO-239)1 input socketsZana zinazohitajika:
Chuma cha kulehemia
Koleo la kumenya waya2
2
Delay, store and display
Delay, store and display
Pass each channel's digital signal through its own delay circuit, whose delay is set by its own delay value setting device. Store both delayed signals in a wave memory and show them on the display. Ours: logic ICs for the delay circuits and setting devices, IC memory, and a CRT driven through D/A converters. Not given: how the delay circuits are built, the memory size, the display.
Vifaa kwa hatua hii:
Mchanganyiko wa IC za mantiki1 delay circuits and setting devices
Kumbukumbu ya saketi jumuishi1 wave memory
Kigeuzi cha dijitali hadi analogi2 display drive
Neli ya miale ya kathodi1 displayZana zinazohitajika:
Chuma cha kulehemiaKoleo la kumenya waya3
3
Build the delay panel and processor
Build the delay panel and processor
Make a delay operation panel with a main switch, a sub switch and one dial, with an encoder on the dial so each turn is read as a change in its output. Connect the panel to a microprocessor with a common memory that holds the sub channel's delay S in one area and the main channel's delay M in another. Mount it all in a case with its supply. Ours: push buttons, an aluminium case, a DC supply.
Vifaa kwa hatua hii:
Kitufe cha kubonyeza2 main and sub switches
Kisimbuzi cha mzunguko1 delay dial
Kichakataji kidogo1 command devicesKumbukumbu ya saketi jumuishi1 common memory
Sanduku la alumini1 caseZana zinazohitajika:
Chanzo cha nishati ya mkondo wa moja kwa moja
Kekee cha NguzoChuma cha kulehemia4
4
Program the two commands
Program the two commands
When the dial turns, read the encoder change e and which switch is held. Sub switch: add e to S, set the sum in the sub channel's setting device and store it back as the new S. Main switch: add e to both M and S, set M + e in the main channel's device and S + e in the sub channel's, and store both back. The main command so moves both channels by the same amount and keeps their relative delay.
Zana zinazohitajika:
Chuma cha kulehemia5
5
Compare two waves
Compare two waves
Feed two signals in. Hold the sub switch and turn the dial to slide the sub channel's wave against the main one. Then hold the main switch and turn the dial: both waves move along the time base together, with the phase difference between them unchanged. Test it with a known signal.
Zana zinazohitajika:
Kizalisha MawimbiVifaa
10- 2 main and sub convertersKishikilia Nafasi
- 1 input socketsKishikilia Nafasi
- 1 delay circuits and setting devicesKishikilia Nafasi
- 1 common memoryKishikilia Nafasi
- 2 display driveKishikilia Nafasi
- 1 displayKishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- 1 command devicesKishikilia Nafasi
- 1 caseKishikilia Nafasi
Zana Zinazohitajika
5- 2 vendors sell this, none ship to you yetKishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
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