Agilent Technologies InfiniiVision 3000 3024A MSO-X, Руководство пользователя

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386 Agilent InfiniiVision 3000 X-Series Oscilloscopes User's Guide
25
I2S Triggering and Serial Decode
If you select an "Armed" value that is equal to or greater than the
"Trigger" value, the "Trigger" value will be increased so that it is
always greater than the "Armed" value.
• Decreasing value — similar to the description above except the trigger
occurs on a descreasing data word value, and the "Armed" value is
the value to which the data must rise in order to re- arm the trigger.
6
Press the
Base
softkey and select a number base for entering data
values:
• Binary (2's complement) .
When Binary is selected, the
Bits
softkey appears. This softkey opens
the I2S Bits Menu for entering data values.
When the trigger qualifier requires a pair of values (as with In
Range, Out of Range, Increasing value, or Decreasing value), the first
softkey in the I2S Bits Menu lets you select which value of the pair.
In the I2S Bits Menu, press the
Bit
softkey and rotate the Entry knob
to select each bit; then, use the 0 1 X softkey to set each bit value to
zero, one, or don't care. You can use the
Set all Bits
softkey to set all
bits to the value chosen on the
0 1 X
softkey.
• Signed decimal .
When Decimal is selected, the softkey(s) to the right let you enter
decimal values with the Entry knob. These softkeys can be
Data
,
<
,
>
,
or
Threshold
depending on the selected trigger qualifier.
"Trigger" value
Trigger Trigger No trigger
"Armed" value
N O T E
If the setup does not produce a stable trigger, the I2S 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.