SP209 Series User Manual
SP209 / SP209i
External trigger IN specifications
Figure 6: External trigger IN timings
The Trig In port allows to start acquisition on an external event generated by another instrument. The
minimum pulse width (T1) is 5ns. Polarity can be set in software. The input impedance is also software
selectable (100k Ωor 50 Ω). The threshold level is 1.0V. T2, the time between external trigger in active
edge and internal trigger engine assertion is 20ns.
Industrial port (SP209i only)
SP209i offer the possibility to connect directly to industrial buses, as opposed to logic channels which
can only be connected to single ended logic level such as LVCMOS or LVTTL. Each one of the industrial
inputs integrates a dedicated receiver circuit, perfectly adapted to each standard. For more reliability
in an industrial context, each bus receiver is exposed via screw terminals. Adequate wires (6-30 AWG)
should be used to connect SP209i to the bus being probed
. Industrial receivers offer the advantage of
visualizing exactly what a standard off-the-shelf transceiver would receive if connected to that bus.
The list of the industrial inputs is detailed below:
• CAN bus receiver
• RS485 bus receiver (can be combined to form a full duplex RS422 bus receiver)
• RS232 receivers
4
Wires to connect SP209i to industrial buses are not provided.
(c) Ikalogic SAS 2019
