Negative to positive TTL signal

[milosbasovic]

Model 6482 is giving an negative TTL signal. What would I need to use to change that signal to positive TTL signal?
The device that I am trying to trigger can only accept following external signal parameters
Low 0V to +0.8V
High +3V to +5V
4ns or wider
1kOhm input impedance

[Joseph V]

On the TLINK lines the signal goes from High (3.4V typical) to Low (0.25V typical) which would make it appear as if it was giving a negative signal. This can be referenced in the 6482 user manual on page 7-13, the triggering occurs on the falling edge of the signal which is why it is done this way.