ADLINK PXI-2022 - Manual (Page 20)

12 Getting Started
SMB Connector

SMB Connector 1: TRG IO

SMB Connector 2: Sync CLK_OUT1
 SMB Connector 3: Sync CLK_OUT0
 SMB Connector 4: CLK IN
Connector Direction Type Description/Function
TRG IO
Input
Output
SMB
The TRG IO is a bidirectional port for external digi-
tal trigger input or output.
CLK OUT1 Output SMB
The CLK OUTOUT 1 is a 50Ω, DC-coupled output;
CLK_OUT0 and CLK_OUT1 is from the same
source.
CLK OUT0 Output SMB
The CLK OUTPUT 0 is a 50Ω, DC-coupled output;
CLK_OUT0 and CLK_OUT1 is from the same
source.
CLK IN Input SMB
The CLK IN is a 50Ω, AC-coupled external time-
base input.
Table 2-1: SMB Connector
TRG IO, as an Input Port
Connector type SMB
Compatibility 3.3 V LVTTL(Low Voltage), 5 V tolerant
Input Logic Level
Input Low voltage: 0.8V (max)
Input high voltage: 2.0 (min)
Maximum Input Overload -0.5 V to +5.5 V
Trigger Polarity
Rising edge or falling edge (Software pro-
grammable)
Minimum Pulse Width 12.5 ns
Table 2-2: TRG IO, as an Input Port