TEKTRONIX 5B12N Dual Time Base Plugin

2. Set A Seconds/DIV (delay benchmark) and DELAY TIME MULT (delay multiplier)

3. Adjust the B Seconds/DIV (delayed sweep speed) to be faster than the A time base to avoid logic errors

2. Sweep frequency amplification operation (taking 100x amplification as an example)

Preparation for dual sweep mode: Press the A+B button, connect the left/right vertical plugs to the same signal, set A Seconds/DIV to 0.1ms/Div (display complete waveform);

Delay mode start: Press A INTEN-B DLY'D and use DELAY TIME MULT to locate the enhanced segment to the pulse that needs to be amplified;

B time base setting: B Seconds/DIV is set to 1 μ s/Div (1/100 of A scan speed), and at this time B time base displays a 100x amplified waveform of A time base enhancement segment;

Calculate magnification factor:

Magnification factor=B Seconds/DIV settings

A Seconds/DIV setting= 1×10 −60.1×10 −3=100

Application scenarios and examples

1. Time difference measurement (interval between two pulses)

Signal access: The left/right vertical plug-in is connected to a signal containing two pulses, in dual sweep mode (A+B pressed), with Volts/Div set to 2 grid amplitudes;

A Time Base Setting: A Seconds/DIV is set to 0.2m/Div (displaying the multi grid distance between two pulses), and the trigger parameter is adjusted to stable display (using CHOP mode for slow scanning speed);

Delay mode start: Press A INTEN-B DLY'D, set B Seconds/DIV to 2 μ s/Div (1/100 of A scan speed), and strengthen the segment length by about 0.1 grid;

Delay positioning: DELAY TIME MULT first locates the rising edge of the first pulse (reading 1.31), and then locates the second pulse (reading 8.81);

Calculate time difference:

Time difference=(8.81-1.31) × 0.2ms=1.5ms

.2. Pulse jitter measurement

Signal access: Left/right vertical plug-in access pulse signal, dual sweep frequency mode, Volts/Div set to 4 grid amplitude;

A Time Base Setting: A Seconds/DIV is set to display the complete waveform, and the trigger parameters are adjusted to stability;

Delay mode start: Press A INTEN-B DLY'D, DELAY TIME MULT locate the pulse to be tested, and set B Seconds/DIV to 0.2 μ s/Div (covering the pulse front);

Jitter calculation: observe the horizontal offset of the pulse in the B time base (example 0.5 grid),

Jitter=0.5 × 0.2 μ s=0.1 μ s

Electrical characteristics (core parameters)

Specific parameter accuracy/range for characteristic category

A time base scanning speed calibration range: 1 μ s/Div-5s/Div (21 levels); 100ns/Div 1 μ s/Div-1s/Div after 10x magnification: ± 3%; 2s/Div-5s/Div：±4%； Enlarged+1%

Non calibrated range: continuously adjustable, extending up to 12.5/s Div-

B time base scanning speed calibration range: 0.2 μ s/Div-0.5s/Div (20 levels) 1 μ s/Div-0.1s/Div: ± 3%; 0.2 μ s/Div, 0.5 μ s/Div, 0.2 s/Div, 0.5 s/Div: ± 4%

Delay characteristics: Delay multiple: 0.2-10.2 times A time base scanning speed (1 μ s-50s) 1 μ s/Div-0.5s/Div: ± 1%; 1s/Div-5s/Div：±2%

Inherent latency: ≤ 500ns-

Delay jitter: ≤ 1/20000 × 10x A time base scanning speed-

Trigger characteristic internal trigger (DC coupling): ≥ 0.4 grid (DC-1MHz); ≥ 0.6 grid (2MHz)-

External trigger (A time base): ≥ 200mV (DC-2MHz) Input RC: 1M Ω± 2%//70pF

Maximum safe input voltage: 350V (DC+peak AC)-

Amplifier mode deflection coefficient: 50mV/Div, 0.5V/Div ± 3%

Bandwidth: DC - ≥ 1MHz (AC coupling 50Hz - ≥ 1MHz)-

Non calibration range: ≥ 10:1 attenuation-