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RIGOL Chapter 5 To Trigger the Oscilloscope
5-50 MSO5000 User Guide
Trigger Parameter Setting:
Set the trigger parameter (noise rejection) under this trigger type. For details, refer
to descriptions in "Noise Rejection".
Trigger LEVEL/Threshold Level:
Rotate the Trigger LEVEL knob to adjust the trigger level/threshold level. Refer
to "Trigger LEVEL/Threshold Level". The current trigger level/threshold level
value is displayed at the upper-right corner of the screen.
MIL-STD-1553 Trigger (Option)
1553B is the abbreviation for the MIL-STD-1553 bus. MSO5000 can trigger on the
sync field of 1553B bus, and can also trigger on the specified data word, command
word, status word, or error type.
The formats of the command word, data word, and status word of the 1553B bus is
shown in the following figure.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Bit
Times
Bit
Times
Data
Word
Bit
Times
Status
Word
Sync
Remote Terminal
Address
5
5 5
T/R
Subaddress/Mode
Word Count/
Mode Code
P
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
P
16
Sync
16-bit Data
Sync
Remote Terminal
Address
Message
Error
Instrumentation
Reserve
d
Service
Request
Broadcast CMD Received
Busy
Subsystem Flag
Dynamic Bus
Acceptance
Terminal Flag
Odd Parity
5 3
Command
Word
Figure 5-23 Formats of the Command Word, Data Word, and Status Word of the
1553B Bus
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