set distort dac to mid-range while calibrating OS, for 1041 offset nullingINSTRUMENT_6_4_34

2 files changed, 3 insertions, 2 deletions

diff --git a/device-functions.c b/device-functions.c
index e787dec..9cf36ab 100644
--- a/device-functions.c
+++ b/device-functions.c
@@ -741,7 +741,8 @@ int Set_Offset(int check_possible_only,int override_on,int word_override,int ran
 
 	/* change amplitude range if required for calibration */
 	if (override_on) {
-		Set_Amplitude(0,0,1,0,pwl_struct[parameter][channel].range,0,0,channel,0.0,0);
+		/* set aux_override to mid-range for 1041 offset nulling */
+		Set_Amplitude(0,0,1,0,pwl_struct[parameter][channel].range,dac_max/2,0,channel,0.0,0);
 	}
 
 	/* increase PW if required to compensate for series output diode turn-on time */
diff --git a/version.h b/version.h
index 2681772..37d1911 100644
--- a/version.h
+++ b/version.h
@@ -1,2 +1,2 @@
-#define FW_VERSION "6.4.33"
+#define FW_VERSION "6.4.34"
 #define SCPI_version "1996.0"