Agilent Technologies InfiniiVision DSO6014L, Руководство пользователя

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272 6000 Series Oscilloscope User’s Guide
6 Displaying Data
b
Press the
Clock
softkey, and use the Entry knob to select
the channel probing the clock signal.
c
Press the rising or falling edge softkey to specify the edge
that the clock occurs on.
d Press the Data softkey, and use the Entry knob to select the
channel probing the data signal.
e
Repeatedly press and release the
Frame by
softkey to select
the method used to identify frames:
•
~CS - Not Chip Select
— an active low chip select signal.
• CS - Chip Select — an active high chip select signal.
• Clock Timeout
— clock idle for a period of time.
f
If you chose framing by chip select or not chip select, press
the
CS
or
~CS
softkey, and use the Entry knob to select the
channel probing the chip select signal.
If you chose framing by clock timeout, press the Timeout
softkey, and use the Entry knob to specify the idle time.
3 For the SPI signals, make sure the trigger or threshold levels
are set to the middle of the signals:
• For analog channels, turn the Trigger Level knob.
• For digital channels, press the D15 Thru D0 key and the
Thresholds softkey to access the threshold level setting
softkeys.
4 Press the up-arrow softkey to return to the previous menu.
Press the
Word Size softkey, and use the Entry knob to select
the number of bits in a word.
5 If the decode line does not appear on the display, press the
Decode softkey to turn it on.
6 If the oscilloscope is stopped, press the Run/Stop key to
acquire and decode data.
N O T E
If the setup does not produce a stable trigger, the CAN signal may be slow
enough that the oscilloscope is AutoTriggering. Press the Mode/Coupling
key, then press the Mode softkey to set the trigger mode from Auto to
Normal.