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IM DLM3054-01EN
When using binary or hexadecimal, if you set Xs in the data pattern, the corresponding bits will be considered
satisfying the condition. If a binary pattern contains any Xs, the corresponding hexadecimal display will be “$.”
Source (Source)
Source (Source)
Set the trigger source to one of the settings below. If you select LOGIC, select the source bit.
CH1 to CH4, LOGIC (Bit 0 to Bit 7)
Bit Rate (Bit Rate)
Select the UART signal’s transfer rate from one of the settings below.
1200 bps, 2400 bps, 4800 bps, 9600 bps, 19200 bps, 38400 bps, 57600 bps, 115200 bps, User Define
If you select User Define, set the transfer rate in the range of 1000 bps to 10000000 bps in 100-bps steps.
Bit Order (Bit Order)
Set the bit order that is appropriate for the data stream.
When setting the data pattern, set the pattern MSB first regardless of the bit order setting.
MSB
When the data stream starts with the MSB
LSB
When the data stream starts with the LSB
Polarity (Polarity)
Select which bit state will be recognized to be logic 1.
0 1
Positive logic
0 1
Negative logic
Sample Point (Sample Point)
You can set the reference that will be used to determine the signal level in the range of 18.8 to 90.6% in 3.1%
steps.
The instrument’s UART signal trigger circuit samples the input UART signal using the internal clock and detects
the point of level change. Set the sample point as a percentage, with the detected point of change equal to 0%
and the point that is bit time after the point of change equal to 100%. The bit time is the inverse of the set bit
rate.
Level (Level), HF Rejection (HF Rejection), Noise Rejection (Noise Rejection)*
Set these items for the trigger source.
These items are the same as those of the edge trigger.*
* You can set this only when the trigger source is set to LOGIC and the 701989 logic probe is connected.
Hysteresis (Hysteresis)
You can set this only when the trigger source is CH1 to CH4.
This item is the same as that of the CAN bus trigger.
Format (Format)
You can select the data format from one of the settings below.
8bit No Parity
8-bit data (no parity bit)
7bit Parity
7-bit data + parity bit
8bit Parity
8-bit data + parity bit
4 Triggering