Rohde & Schwarz RTM20 Series, Руководство пользователя, Страница: 185 / 499

Protocol Analysis
R&S
®
RTM20xx
170 User Manual 1317.4726.02 ─ 01
└ Address Length .............................................................................................171
└ Slave Address ...............................................................................................171
└ Data Setup ....................................................................................................171
└ Byte Offset ..........................................................................................172
└ Number of Bytes .................................................................................172
└ Bit ........................................................................................................172
└ State ...................................................................................................172
└ Byte .....................................................................................................172
└ Value ...................................................................................................172
Start
Sets the trigger to the start of the message. The start condition is a falling slope on SDA
while SCL is high.
Remote command:
​
TRIGger:
​
A:
​
I2C:
​
PATTern
​
on page 391 (
STARt
)
Stop
Sets the trigger to the end of the message. The stop condition is a rising slope on SDA
while SCL is high.
Remote command:
​
TRIGger:
​
A:
​
I2C:
​
PATTern
​
on page 391 (
STOP
)
Restart
Sets the trigger to a repeated start - when the start condition occurs without previous stop
condition. This can happen when a master sends multiple messages without releasing
the bus.
Remote command:
​
TRIGger:
​
A:
​
I2C:
​
PATTern
​
on page 391 (
RESTart
)
~Acknowledge
Missing acknowledge: the instrument triggers if the slave does not send the acknowledge
bit. Acknowledging takes place after every byte. If the transfer failed, at the moment of
the acknowledge bit the SDA line is on high level during the high period of the clock pulse.
Remote command:
​
TRIGger:
​
A:
​
I2C:
​
PATTern
​
on page 391 (
MACKnowledge
)
Read/Write
Sets the trigger to a read or write access of the master, to an address, or/and to a bit
pattern in the message. The trigger condition is specified in the submenus. All submenu
settings together create the trigger condition. If you want to trigger on a specific param-
eter, make sure to set all other settings to "any".
If a label list with node names was loaded and applied in the bus configuration, you can
select simply the "Symbolic ID" from the list instead of entering the numeric identifier.
I²C (Option R&S RTM-K1)