Tektronix 4000 series oscilloscope

(3) Demo XVIII: Channel Labels

Step: ① Connect the USB keyboard to the oscilloscope; ② D15-D0 "→" Edit Label "; ③ Set labels (Count 0-6) for D0-D6, and use the preset label "CLOCK" for D7; ④ Menu Off.

(4) Demo XIX: Examining Parallel Buses

Step: ① Press B1 → "Bus" and select "Parallel"; ② Define input → Data bits=7 (D0=LSB, D6=MSB); ③ Set "timer data" to "yes", "clock edge"=rising edge, "clock"=D7; ④ "single" acquisition (clock rising edge decoding bus); ⑤ Event Table "(displays data values and timestamps when enabled, can export CSV).

(5) Demo XX: Parallel bus data value triggering

Steps: ① "Trigger Menu" → "Type" Select "Bus" → "Signal Source Bus" Select B1; ② "Data" Set 7F (hexadecimal, all 1s); ③ Menu Off "→" Run/Stop "; ④ Triggered when 7F occurs.

(6) Demo XXI: Searching for Parallel Bus Data Values

Step: ① Press "Search" → "Open"; ② Copy trigger settings to search "(using 7F from demonstration XX as a standard); ③ Change 'data' to 7X (X=any value, resulting in an increase in results); ④ Menu Off.

(7) Demo XXII: Discovery of multi-channel establishment and maintenance

Step: ① P6516 (D2 → Q OUTPUT, D1 → D INPUT, D0 → FF CLOCK, grounded); ② Default Setup "→ Close channel 1; ③ Open D0-D2, label D0="CLOCK"; ④ Set the horizontal "scale" to 1 ns/grid; ⑤ Select "Create&Maintain" from "Trigger Menu" ->"Type"; ⑥ Define input "(clock=D0, D1/D2=data, clock edge=rising edge); ⑦ Set the establishment time to 500 ps and the holding time to 1.5 ns for "time"; ⑧ "single" acquisition (display timing changes, gray fuzzy band=edge uncertainty); ⑨ MagniVu is enabled (to verify if it is a genuine violation).

(8) Demo XXIII: Magnify the white edge

Steps: ① P6139A (channel 1 → XTALK 1, connected to GND), P6516 (D0 → XTALK 1); ② Default Setup "→" Collection "→" Record Length "=1M points; ③ Press "D15-D0" → "Height" to set "L" (large); ④ Set "Auto Settings" → Horizontal "Scale" to 1 μ s; ⑤ Place channel 1 in the upper half and digital channel in the lower half; ⑥ Run/Stop "(observe the white vertical edge); ⑦ Pan/zoom to white edge → zoom in (view narrow pulse details).

Demo board operation and troubleshooting

1. Operation demonstration board

Serial Select button: Switch serial standards (RS232, I2C, SPI, CAN), corresponding LED lights up;

Random Errors button: Generate a random error signal (burr frequency 1-10 ns, duration 500 ns-50 μ s);

SINGLE/HOT ON/OFF button: Switch between single/continuous serial streams;

Single Shot trigger button: Activate 2 ns pulse and 512 MHz oscillator.

2. Troubleshooting of demonstration board

(1) Basic inspection

Power check: Check if the "USB POWER" LED is on. If it is not on, unplug and plug in the USB again;

Set up check: Confirm that the Serial Select LED is consistent with the expected serial standard.

(2) Reset operation

Normal reset: Press the "Reset" button on the demonstration board;

Overall reset: ① Press and hold "SINGLE/HOT ON/OFF"; ② Press and release 'Reset'; ③ Release after all 4 LEDs of Serial Select are fully lit; ④ Four LEDs flash several times, but only the I2C LED lights up (reset completed).