diff --git a/documents/thesis/chapters/grand_characterisation.tex b/documents/thesis/chapters/grand_characterisation.tex
index bb49174..fcafdb8 100644
--- a/documents/thesis/chapters/grand_characterisation.tex
+++ b/documents/thesis/chapters/grand_characterisation.tex
@@ -43,7 +43,7 @@ These inputs are connected to their respective filterchains, leaving a fourth fi
 Each filterchain bandpasses the signal between $30\MHz$ and $200\MHz$.
 Finally, the signals are digitised by a four channel 14-bit \gls{ADC} sampling at $500\MHz$.
 %The input voltage ranges from $-900\mV$ to $+900\mV$.
-In our setup, the channels are read out after one of two internal ``monitoring'' triggers fire with the ten-second trigger (TD) linked to the \gls{1PPS} of the \gls{GNSS} chip and the other (MD) a variable randomising trigger.
+In our setup, the channels are read out after one of two internal ``monitoring'' triggers fire with the ten-second trigger (TD) linked to the 1~\acrlong{PPS} of the \gls{GNSS} chip and the other (MD) a variable randomising trigger.
 \\
 
 % timestamp = GPS + local oscillator