diff --git a/src/calng/AgipdCorrection.py b/src/calng/AgipdCorrection.py
index 5511ab8ea42e9731b0cc107283e87256727d2571..7c45081d2bb3abb8b242d0557f46fa7b69460ec0 100644
--- a/src/calng/AgipdCorrection.py
+++ b/src/calng/AgipdCorrection.py
@@ -348,6 +348,11 @@ class AgipdCalcatFriend(calcat_utils.BaseCalcatFriend):
             OVERWRITE_ELEMENT(schema)
             .key(f"{param_prefix}.memoryCells")
             .setNewDefaultValue(352)
+            .commit(),
+
+            OVERWRITE_ELEMENT(schema)
+            .key(f"{param_prefix}.biasVoltage")
+            .setNewDefaultValue(300)
             .commit()
         )
 
diff --git a/src/calng/DsscCorrection.py b/src/calng/DsscCorrection.py
index 4ad37908bef785e07bc14005cf885e86ef92401b..4b48e5aedafbc86121873ea33997a7aa86ee611d 100644
--- a/src/calng/DsscCorrection.py
+++ b/src/calng/DsscCorrection.py
@@ -123,6 +123,11 @@ class DsscCalcatFriend(calcat_utils.BaseCalcatFriend):
             OVERWRITE_ELEMENT(schema)
             .key(f"{param_prefix}.memoryCells")
             .setNewDefaultValue(400)
+            .commit(),
+
+            OVERWRITE_ELEMENT(schema)
+            .key(f"{param_prefix}.biasVoltage")
+            .setNewDefaultValue(100)  # TODO: proper
             .commit()
         )
         (
diff --git a/src/calng/calcat_utils.py b/src/calng/calcat_utils.py
index 0af00de41c40d49b548961a1c604e86fe177a627..cb8a67192628d79ea30283c6f05a1f56dc8ae339 100644
--- a/src/calng/calcat_utils.py
+++ b/src/calng/calcat_utils.py
@@ -248,25 +248,33 @@ class BaseCalcatFriend:
 
             UINT32_ELEMENT(schema)
             .key(f"{param_prefix}.memoryCells")
+            .displayedName("Memory cells")
+            .description(
+                "Number of memory cells / frames per train. Relevant for burst mode."
+            )
             .assignmentOptional()
-            .noDefaultValue()
+            .defaultValue(1)
             .reconfigurable()
             .commit(),
 
             UINT32_ELEMENT(schema)
             .key(f"{param_prefix}.pixelsX")
+            .displayedName("Pixels X")
             .assignmentOptional()
             .defaultValue(512)
             .commit(),
 
             UINT32_ELEMENT(schema)
             .key(f"{param_prefix}.pixelsY")
+            .displayedName("Pixels Y")
             .assignmentOptional()
             .defaultValue(128)
             .commit(),
 
             DOUBLE_ELEMENT(schema)
             .key(f"{param_prefix}.biasVoltage")
+            .displayedName("Bias voltage")
+            .description("Sensor bias voltage")
             .assignmentOptional()
             .defaultValue(300)
             .reconfigurable()