diff --git a/linien-common/linien_common/common.py b/linien-common/linien_common/common.py
index 854d776..a310dbe 100644
--- a/linien-common/linien_common/common.py
+++ b/linien-common/linien_common/common.py
@@ -25,8 +25,8 @@ from typing import Dict, Iterable, List, Tuple, Union
 import numpy as np
 from scipy.signal import correlate, resample
 
-MHz = 0x10000000 / 8
-Vpp = ((1 << 14) - 1) / 4
+MHz = 0x10000000 / 8 * 125 / 100
+Vpp = (1 << 14) * 0.5 / 0.425 - 1
 # conversion of bits to V
 ANALOG_OUT_V = 1.8 / ((2**15) - 1)