diff --git a/test/tests/test_sampler.cpp b/test/tests/test_sampler.cpp
index 18dc144..2f129f4 100644
--- a/test/tests/test_sampler.cpp
+++ b/test/tests/test_sampler.cpp
@@ -14,7 +14,7 @@ int GetESRSupplyR()
     return 22000;
 }
 
-TEST(Sampler, TestDcBehavior)
+TEST(Sampler, TestDc)
 {
     Sampler dut;
 
@@ -23,7 +23,7 @@ TEST(Sampler, TestDcBehavior)
     data.PumpCurrentVoltage = 1.75f;
     constexpr float virtualGroundVoltage = 1.65f;
 
-    for (size_t i = 0; i < 10; i++)
+    for (size_t i = 0; i < 5000; i++)
     {
         dut.ApplySample(data, virtualGroundVoltage);
     }
@@ -31,5 +31,31 @@ TEST(Sampler, TestDcBehavior)
     // not exactly 0 because of filtering
     EXPECT_NEAR(0, dut.GetNernstAc(), 1e-3);
     EXPECT_FLOAT_EQ(0.45f, dut.GetNernstDc());
-    EXPECT_NEAR(-0.0295, dut.GetPumpNominalCurrent(), 1e-3);
+    EXPECT_NEAR(-0.1616, dut.GetPumpNominalCurrent(), 1e-3);
+}
+
+TEST(Sampler, TestAc)
+{
+    Sampler dut;
+
+    AnalogChannelResult dataLow;
+    dataLow.NernstVoltage = 0.45f - 0.1f;
+    dataLow.PumpCurrentVoltage = 1.75f;
+
+    AnalogChannelResult dataHigh;
+    dataHigh.NernstVoltage = 0.45f + 0.1f;
+    dataHigh.PumpCurrentVoltage = 1.75f;
+
+    constexpr float virtualGroundVoltage = 1.65f;
+
+    for (size_t i = 0; i < 5000; i++)
+    {
+        dut.ApplySample(dataLow,  virtualGroundVoltage);
+        dut.ApplySample(dataHigh, virtualGroundVoltage);
+    }
+
+    // not exactly 0 because of filtering
+    EXPECT_NEAR(0.2, dut.GetNernstAc(), 1e-3);
+    EXPECT_FLOAT_EQ(0.45f, dut.GetNernstDc());
+    EXPECT_NEAR(-0.1616, dut.GetPumpNominalCurrent(), 1e-3);
 }