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IM DLM3054-01EN
SENT Trigger [ENHANCED, option]
The instrument triggers on a specific pulse or nibble (Nibble) in a SENT signal. The following figure shows the
SENT signal frame format.
…
………
………
………
… … … … …
SYNC/CAL CRC Pause
Message (Frame)
Next message
(Frame)
Status and
Communication
Data Nibbles: 1 to 6
(1 nibble: 4 bits)
Message 1 Message 2 Message N
ID, Data, CRC
Slow CH
Fast CH
N:
The instrument’s SENT signal trigger circuit detects the section of the signal where the period between
successive falling edges of the signal is 56 clock ticks* (including the specified clock tolerance) as SYNC/
CAL. If consecutive 56-clock-tick signals occur, the last signal is detected as SYNC/CAL. The previous
signals are handled as pause pulses or errors.
* In SENT signals, the reference clock period is expressed in clock ticks. The time between consecutive
falling edges of the signal is counted using this period in order to detect SYNC/CAL and calculate nibble
values.
Trigger Mode (Mode)
Select the SENT trigger mode from one of the settings below.
Every Fast CH: Triggers when a fast channel message is detected
Fast CH S&C: Triggers on the status and communication bit pattern
Fast CH Data: Triggers on the AND of the fast channel data
Every Slow CH: Triggers when a slow channel message is detected
Slow CH ID/ Data: Triggers on the AND of the slow channel ID and data
Error: Triggers on errors
Every Fast CH
The instrument triggers when it detects a fast channel message.
Fast CH S&C
The instrument triggers on the fast channel status and communication bit pattern.
• If you specify X in the bit pattern or data pattern, the condition is assumed to be met regardless of the
corresponding bit status.
• In a bit pattern or data pattern setting, if a binary pattern contains any Xs, the corresponding hexadecimal
display will be “$.”
• Trigger Condition (Condition Setup)
Set the 4-bit status and communication bit pattern in hexadecimal (Hex) or binary (Bin) notation. The trigger
condition is met when the input signal status and communication bit pattern match the specified bit pattern.
4 Triggering
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