Triggers
11
Keysight InfiniiVision 3000T X-Series Oscilloscopes User's Guide
185
3
Press the
Source
softkey, and turn the Entry knob to select an analog input
channel source.
4
Press the
Standard
softkey to select the signaling technology used by the input
signal.
5
Set the trigger level to capture transitions in the modulation envelope. Or at
approximately 50% of the modulation depth. NFC-A uses 100% modulation, so
the trigger level can be set in a wide range of values. NFC-B, NFC-F212, and
NFC-F424 use 10% modulation, so the trigger level needs to be set to
approximately 95% of the unmodulated carrier amplitude. Usually the actual
modulation depth is greater than 10%, so the trigger level can be set
accordingly.
The following image shows how the trigger level should be set. The Y2 marker
is set for the unmodulated carrier amplitude or 123.3 mV. The Y1 marker is set
for the maximum modulated amplitude or 97.8 mV. (Note that the actual
modulation depth is close to 20%.) The midpoint of the modulation would be
(123.3 mV + 97.8 mV) / 2.0 = 110.6 mV. The trigger level is set to 108 mV;
slightly below the mid modulation level to account for trigger hysteresis.
Содержание DSOX3012T
Страница 78: ...78 Keysight InfiniiVision 3000T X Series Oscilloscopes User s Guide 2 Horizontal Controls...
Страница 88: ...88 Keysight InfiniiVision 3000T X Series Oscilloscopes User s Guide 3 Vertical Controls...
Страница 98: ...98 Keysight InfiniiVision 3000T X Series Oscilloscopes User s Guide 4 FFT Spectral Analysis...
Страница 148: ...148 Keysight InfiniiVision 3000T X Series Oscilloscopes User s Guide 7 Digital Channels...
Страница 154: ...154 Keysight InfiniiVision 3000T X Series Oscilloscopes User s Guide 8 Serial Decode...
Страница 160: ...160 Keysight InfiniiVision 3000T X Series Oscilloscopes User s Guide 9 Display Settings...
Страница 232: ...232 Keysight InfiniiVision 3000T X Series Oscilloscopes User s Guide 13 Acquisition Control...
Страница 242: ...242 Keysight InfiniiVision 3000T X Series Oscilloscopes User s Guide 14 Cursors...
Страница 288: ...288 Keysight InfiniiVision 3000T X Series Oscilloscopes User s Guide 16 Mask Testing...
Страница 294: ...294 Keysight InfiniiVision 3000T X Series Oscilloscopes User s Guide 17 Digital Voltmeter and Counter...
Страница 300: ...300 Keysight InfiniiVision 3000T X Series Oscilloscopes User s Guide 18 Frequency Response Analysis...
Страница 320: ...320 Keysight InfiniiVision 3000T X Series Oscilloscopes User s Guide 19 Waveform Generator...
Страница 340: ...340 Keysight InfiniiVision 3000T X Series Oscilloscopes User s Guide 21 Print Screens...
Страница 374: ...374 Keysight InfiniiVision 3000T X Series Oscilloscopes User s Guide 23 Web Interface...
Страница 394: ...394 Keysight InfiniiVision 3000T X Series Oscilloscopes User s Guide 24 Reference...
Страница 416: ...416 Keysight InfiniiVision 3000T X Series Oscilloscopes User s Guide 25 CAN LIN Triggering and Serial Decode...
Страница 426: ...426 Keysight InfiniiVision 3000T X Series Oscilloscopes User s Guide 26 CXPI Triggering and Serial Decode...
Страница 436: ...436 Keysight InfiniiVision 3000T X Series Oscilloscopes User s Guide 27 FlexRay Triggering and Serial Decode...
Страница 480: ...480 Keysight InfiniiVision 3000T X Series Oscilloscopes User s Guide 30 Manchester NRZ Triggering and Serial Decode...
Страница 510: ...510 Keysight InfiniiVision 3000T X Series Oscilloscopes User s Guide 32 SENT Triggering and Serial Decode...
Страница 520: ...520 Keysight InfiniiVision 3000T X Series Oscilloscopes User s Guide 33 UART RS232 Triggering and Serial Decode...