Datasheet

Mixed Signal Oscilloscopes — MSO2000B Series, DPO2000B Series
Trigger System
Characteristi
c
Description
Main Trigger Modes
Auto, Normal, and Single
Trigger Coupling DC, HF reject (attenuates >85 kHz), LF reject
(attenuates <65 kHz), noise reject (reduces
sensitivity)
Trigger Holdoff
Range
20nsto8s
Trigger Sig
nal
Frequency C
ounter
Provides a h
igher accuracy means of identifying
the frequen
cy of trigger signals. Trigger Signal
Frequency
counter resolution is 6 digits.
Trigger Sensitivity
Characteristi
c
Description
Internal DC Coupled 0.4 divisions from DC to 50 MHz
0.6 divisions > 50 MHz to 100 MHz
0.8 divisions > 100 MHz to 200 MHz
External
(Auxiliary Input)
200 mV from DC to 100 MHz, 1X attenuation
Trigger Level Range
Characteristic Description
Any Channel ±4.92 divisions from center of screen
External
(Auxiliary Input)
±6.25 V, 1X attenuation
±12.5 V, 10X attenuation
Trigger Modes
Mode Description
Edge
Positive or negative slope on any channel or front-panel auxiliary input. Coupling includes DC, AC, HF reject, LF reject, and noise reject.
Pulse Width
Trigger o
n width of positive or negative pulses that are >, <, =, or ≠ a specified period of time.
Runt
Trigger on a pulse that crosses one threshold but fails to cross a second threshold before crossing the first a gain.
Logic
Trigger when any logical pattern of channels goes false or stays true for specified period of time. Any input can be used as a clock to look for the
pattern on a clock edge. Pattern (AND, OR, NAND, NOR) specified for all analog and digital input channels defined as High, Low, or Don’t Care.
Setup and Hold Trigger on violations of both setup time and hold time between clock and data present on any of the input channels.
Rise/
Fall Time
Trigg
er on pulse edge rates that are faster or slower than specified. Slope may be positive, negative, or either.
Video
Trigger on line number, all lines, odd, even, or all fields on NTSC, PAL, and SECAM video signals.
I
2
C (optional) Trigger on Start, Repeated Start, Stop, Missing ACK, Address (7 or 10 bit), Data, or Address and Data on I
2
C buses up to 3.4 Mb/s.
SPI (optional) Trigger on SS, MOSI, MISO, or MOSI and MISO on SPI buses up to 10.0 Mb/s.
CAN
(optional)
Tri
gger on Start of Frame, Frame Type (data, remote, error, overload), Identifier (standard or extended), Data, Identifier and Data, End of
Fra
me, Missing ACK, or Bit Stuffing Error on CAN signals up to 1 Mb/s. Data can be further specified to trigger on ≤,<,=,>,≥,or≠ aspecific
dat
a value. User-adjustable sample point is set to 50% by default.
RS-232/422/485/UART
(optional)
Trigger on Tx Start Bit, Rx Start Bit, Tx End of Packet, Rx End of Packet, Tx Data, Rx Data, Tx Parity Error, and Rx Parity Error.
LIN (optional) Trigger on Sync, Identifier, Data, Identifier and Data, Wakeup Frame, Sleep Frame, Erro rs such as Sync, Parity, or Checksum Errors.
Parallel (available
on MSO models
only)
Trigger on a parallel bus data value.
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