MultiCam Boards Documentation > GRABLINK series Documentation > GRABLINK Quickpack CFA Handbook > Connector Specifications > System Connectors > TRA1 & TRA2 Input Ports

TRA1 & TRA2 Input Ports

This digital non-isolated input port accepts high-speed differential signals with a wide common-mode input voltage range. It complies with TIA/EIA-644 (LVDS) standard. The active fail-safe feature assures a high-level output when the port is unconnected. The port is protected against electrostatic discharge. It embeds a common-mode choke for the rejection high-frequency common-mode noise.

Trigger lines electrical specifications

Parameter

Min

Typ

Max

Unit

Positive-going differential input voltage threshold

 

 

50

mV

Negative-going differential input voltage threshold

-50

 

 

mV

Differential input voltage hysteresis

 

50

 

mV

Magnitude of differential input voltage

0.1

 

3

V

Voltage at any input relative to GND

-4

 

5

V

Input impedance

 

100

 

Ω

In the following schematic, the input pin corresponds to the TRA1 or TRA2 signal.

GrablinkIEqSchDiffTrgInputLine

Equivalent schematic of the trigger input line