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White Rabbit Calibration
Commit 949642e4 authored by Peter Jansweijer's avatar Peter Jansweijer
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MiniCircuits Splitters ZFRSC-123+ attenuation values updated

parent e35a430b
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Showing with 8 additions and 8 deletions
sw/ab_cal_scripts/lib/LeCroy8254.py
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......@@ -625,28 +625,28 @@ def osc_init(scope, time_base = 50.0e-9):
# use Channel 3 Ethernet Frame input
# A fixed trigger level is important for proper timing measurement
# Choose 1.4 Volt for a direct signal but 0.8 Volt when the signal
# is split by a power splitter
# MiniCircuits Splitters ZFRSC-123+ have ~ 6 + 3,75 dB attenuation (~ factor 3).
# A 2,4 V signal split once results in 0,8 V, slit twice in 260 mV.
scope.write("TRIG_SELECT EDGE,SR,C1")
use_power_splitter = True
if use_power_splitter:
scope.write("C1:TRIG_LEVEL 0.4")
scope.write("C1:Volt_DIV 0.5")
scope.write("C1:TRIG_LEVEL 0.15")
scope.write("C1:Volt_DIV 0.1")
else:
scope.write("C1:TRIG_LEVEL 0.7")
scope.write("C1:Volt_DIV 0.75")
scope.write("C1:TRIG_LEVEL 0.3")
scope.write("C1:Volt_DIV 0.2")
scope.write("C1:COUPLING D50")
scope.write("C1:OFFSET 0.0")
scope.write("C3:COUPLING D50")
scope.write("C3:OFFSET 0.0")
scope.write("C3:Volt_DIV 0.125")
scope.write("C3:Volt_DIV 0.25")
scope.write("C4:COUPLING D50")
scope.write("C4:OFFSET 0.0")
scope.write("C4:Volt_DIV 0.125")
scope.write("C4:Volt_DIV 0.25")
# Trigger in the centre of the screen; important for maximum estimations
......
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