diff --git a/geomagio/Metadata.py b/geomagio/Metadata.py
index 4b935a54e934a8658db53fb32c760efab232197c..2be5dcb5f4c884e0f867b0ee52eeb36418203f05 100644
--- a/geomagio/Metadata.py
+++ b/geomagio/Metadata.py
@@ -136,9 +136,9 @@ _INSTRUMENT_METADATA = [
             "channels": {
                 # each channel maps to a list of components to calculate nT
                 # TODO: calculate these lists based on "FGE" type
-                "U": [{"channel": "U_Volt", "offset": 20982.17, "scale": 966.7624}],
-                "V": [{"channel": "V_Volt", "offset": -2943.59, "scale": 944.1253}],
-                "W": [{"channel": "W_Volt", "offset": 47136.96, "scale": 975.5875}],
+                "U": [{"channel": "U_Volt", "offset": 20495, "scale": 966.7624}],
+                "V": [{"channel": "V_Volt", "offset": 2873, "scale": 944.1253}],
+                "W": [{"channel": "W_Volt", "offset": 46961, "scale": 975.5875}]
             },
             "electronics": {
                 "serial": "E574",