Agilent Technologies InfiniiVision 6000 Series User Manual page 201

6000 Series Oscilloscope User's Guide
8 Press the Bus Config softkey and set the following parameters.
a #Bits: Set the number of bits in the UART/RS232 words to
match your target system (selectable from 5-9 bits).
b Parity: Choose odd, even, or none, based on your target
system.
c Baud: Select the baud rate to match the signal in your
target system.
d Polarity: Select idle low or idle high to match your target
system's state when at idle. For RS232 select idle low.
e Bit Order: Select whether the most significant bit (MSB) or
the least significant bit (LSB) is presented after the start
bit in the signal from your target system. For RS232 select
LSB.
9 Press the up arrow key to return to the previous menu.
10 Press the Trigger Setup softkey and set up the desired trigger
condition.
Rx Start Bit: The oscilloscope triggers when a start bit
•
occurs on Rx.
Rx Stop Bit: Triggers when a stop bit occurs on Rx. The
•
trigger will occur on the first stop bit. This is done
automatically whether the target system uses 1, 1.5, or 2
stop bits. You do not need to specify the number of stop
bits used by the target system.
Rx Data: Triggers on a data byte that you specify. For use
•
when the target system data words are from 5 to 8 bits in
length (no 9th (alert) bit).
Rx 1:Data: For use when the target system data words are 9
•
bits in length including the alert bit (the 9th bit). Triggers
only when the 9th (alert) bit is 1. The specified data byte
applies to the least significant 8 bits (excludes the 9th
(alert) bit).
Rx 0:Data: For use when the target system data words are 9
•
bits in length including the alert bit (the 9th bit). Triggers
only when the 9th (alert) bit is 0. The specified data byte
applies to the least significant 8 bits (excludes the 9th
(alert) bit).
Triggering the Oscilloscope 4
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