Data Sheet
Ikalogic | SP209 series data sheet | 5
External trigger IN specifications
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 (100kΩ or 50Ω). 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 the bus being probed .
4
Industrial receivers offer the advantage of
visualizing exactly what a standard
4
Wires to connect SP209i to industrial bus are
not provided.
off-the-shelf transceiver would receive if
connected to that bus.
The list of the industrial inputs is detailed
below:
● 1 CAN bus receiver
● 2 RS485 bus receiver (can be
combined to form a full duplex
RS422 bus receiver)
● 2 RS232 receivers
● 1 LIN bus receiver
Please refer to the SP209i casing for exact
pinout.
RS485 receiver specifications
Max. baudrate
50 Mbps
Common Mode Operating
range
-7 V to +12 V
Common Mode Input
Impedance
48 kΩ || 10 pF
(preliminary)
Common Mode voltage
abs. max
±15 V
Differential Threshold
voltage
-125 mV
Differential Fixed
hysteresis
25 mV
Differential Input
Impedance
400 kΩ or 120 Ω
Software selectable
(preliminary)
RS232 receiver specifications
Max. baudrate
1.5 Mbps
Operating range
±15 V
Input Impedance
5 kΩ|| 50 pF
(preliminary)
Absolute max voltage
±20 V
Threshold voltage
1.5 V
Hysteresis
300 mV