To Use I2C Triggering - Agilent Technologies 54622A User Manual

Triggering the Oscilloscope

To use I2C triggering

2
To use I C triggering
2
An I C (Inter-IC bus) trigger setup consists of connecting the oscilloscope to
the serial data (SDA) line and the serial clock (SCL) line, then triggering on a
stop/start condition or triggering on a read/write frame with a specific device
address and data value.
1 Press the More key in the Trigger section of the front panel, press the
softkey, then press the
Data
Clock
channel
channel
2 Connect an oscilloscope channel to the serial clock (SCL) line in the
circuit under test, then set the
As you press the Clock softkey (or rotate the Entry knob on mixed-signal
oscilloscopes), the channel you select is shown in the upper-right corner of the
2
display next to "I C". The clock rate is compatible with standard (100 kbit/s)
and fast-mode (400 kbit/s) systems.
Adjust the trigger level for the selected analog channel by turning the Trigger
Level knob. For the mixed-signal oscilloscope, select Threshold in the D7 Thru
D0 or D15 Thru D8 menu to set the level for digital channels assigned to the clock
and data lines. The value of the trigger level or digital threshold is displayed in
the upper-right corner of the display.
3- 20
softkey to display the I
Settings
Currently selected Clock
2
I C trigger
Address
Trigger on:
condition
channel softkey to that channel.
Clock
2
C trigger menu.
Trigger level
or Data channel
or threshold
Data Return to
value
previous menu
2
I C