diff --git a/slsDetectorServers/mythen3DetectorServer/mythen3.c b/slsDetectorServers/mythen3DetectorServer/mythen3.c
index fba996ad7..bb38bcbac 100644
--- a/slsDetectorServers/mythen3DetectorServer/mythen3.c
+++ b/slsDetectorServers/mythen3DetectorServer/mythen3.c
@@ -110,6 +110,190 @@ patternParameters *setChipStatusRegister(int csr) {
 
 }
 
+patternParameters *setInterpolation(int mask) {
+  int csr;
+  if (mask)
+    csr=chipStatusRegister|(1<< CSR_interp);
+  else
+    csr=chipStatusRegister & ~(1<< CSR_interp);
+
+  return setChipStatusRegister(csr);
+}
+
+
+
+patternParameters *setPumpProbe(int mask) {
+  int csr;
+  if (mask)
+    csr=chipStatusRegister|(1<< CSR_pumprobe);
+  else
+    csr=chipStatusRegister & ~(1<< CSR_pumprobe);
+
+  return setChipStatusRegister(csr);
+
+}
+patternParameters *setDigitalPulsing(int mask) {
+
+  int csr;
+  if (mask)
+    csr=chipStatusRegister|(1<< CSR_dpulse);
+  else
+    csr=chipStatusRegister & ~(1<< CSR_dpulse);
+
+  return setChipStatusRegister(csr);
+  
+}
+patternParameters *setAnalogPulsing(int mask){
+
+  int csr;
+  if (mask)
+    csr=chipStatusRegister|(1<< CSR_apulse);
+  else
+    csr=chipStatusRegister & ~(1<< CSR_apulse);
+
+  return setChipStatusRegister(csr);
+  
+}
+patternParameters *setNegativePolarity(int mask){
+
+  int csr;
+  if (mask)
+    csr=chipStatusRegister|(1<< CSR_invpol);
+  else
+    csr=chipStatusRegister & ~(1<< CSR_invpol);
+
+  return setChipStatusRegister(csr);
+  
+}
+
+int setGainPreamp(int pgain, int *csr) {
+
+  
+  
+  switch (pgain) {
+  case Cp_0:
+  case Cp_15:
+    *csr=(*csr)&~(1<<CSR_C10pre);
+    break;
+  case Cp_10:
+  case Cp_45:
+    *csr=(*csr)|(1<<CSR_C10pre);
+    break;
+  default:
+    LOG(logERROR, ("Bad preamp gain"));
+    return 1;
+  }
+  
+  switch (pgain) {
+  case Cp_0:
+  case Cp_10:
+    *csr=(*csr)&~(1<<CSR_C15pre);
+    break;
+  case Cp_15:
+  case Cp_45:
+    *csr=(*csr)|(1<<CSR_C15pre);
+    break;
+  default:
+    LOG(logERROR, ("Bad preamp gain"));
+    return 1;
+  }
+  
+  return 0;
+
+}
+int setGainShaper(int shgain, int *csr){
+  
+  
+  switch (shgain) {
+  case Csh_0:
+  case Csh_30:
+  case Csh_50:
+  case Csh_80:
+    *csr=(*csr)&~(1<<CSR_C15sh);
+    break;
+  case Csh_15:
+  case Csh_45:
+  case Csh_65:
+  case Csh_95:
+    *csr=(*csr)|(1<<CSR_C15sh);
+    break;
+  default:
+    LOG(logERROR, ("Bad shaper gain"));
+    return 1;
+  }
+  
+  switch (shgain) {
+  case Csh_0:
+  case Csh_15:
+  case Csh_50:
+  case Csh_65:
+    *csr=(*csr)&~(1<<CSR_C30sh);
+    break;
+  case Csh_30:
+  case Csh_45:
+  case Csh_80:
+  case Csh_95:
+    *csr=(*csr)|(1<<CSR_C30sh);
+    break;
+  default:
+    LOG(logERROR, ("Bad shaper gain"));
+    return 1;
+  }
+  switch (shgain) {
+  case Csh_0:
+  case Csh_15:
+  case Csh_30:
+  case Csh_45:
+    *csr=(*csr)&~(1<<CSR_C50sh);
+    break;
+  case Csh_80:
+  case Csh_50:
+  case Csh_65:
+  case Csh_95:
+    *csr=(*csr)|(1<<CSR_C50sh);
+    break;
+  default:
+    LOG(logERROR, ("Bad shaper gain"));
+    return 1;
+  }
+  
+  return 0;
+}
+
+int setGainAC(int acgain, int *csr){
+
+  switch (acgain) {
+  case Cac_450:
+    *csr=(*csr)&~(1<<CSR_C225ACsh);
+    break;
+  case Cac225:
+    *csr=(*csr)|(1<<CSR_C225ACsh);
+    break;
+  default:
+    LOG(logERROR, ("Bad ac gain"));
+    return 1;
+  }
+  return 0;
+}
+
+
+
+patternParameters *setChipGain(int pgain, int shgain, int acgain){
+  int csr=chipStatusRegister;
+  
+  if (setGainPreamp(pgain,&csr))
+    return NULL;
+  if (setGainShaper(shgain,&csr))
+    return NULL;
+  if (setGainAC(acgain,&csr))
+    return NULL;
+  
+  return setChipStatusRegister(csr);
+}
+
+
+
+
 patternParameters *setChannelRegisterChip(int ichip, int *mask, int *trimbits) {
 
   patternParameters *pat = malloc(sizeof(patternParameters));
diff --git a/slsDetectorServers/mythen3DetectorServer/mythen3.h b/slsDetectorServers/mythen3DetectorServer/mythen3.h
index 39ed5ce80..c47b6cd8e 100644
--- a/slsDetectorServers/mythen3DetectorServer/mythen3.h
+++ b/slsDetectorServers/mythen3DetectorServer/mythen3.h
@@ -48,12 +48,25 @@
 
 #define CSR_default  (1<<CSR_C10pre )|(1<< CSR_C30sh)
 
+enum {Cp_0, Cp_10, Cp_15, Cp_45};
+enum {Csh_0,Csh_15,Csh_30,Csh_45,Csh_50,Csh_65,Csh_80,Csh_95};
+enum {Cac225, Cac_450};
 
 
+
+#define default_gain 
 int setBit(int ibit, int patword);
 int clearBit(int ibit, int patword);
 patternParameters *setChipStatusRegister(int csr);
 patternParameters *setChannelRegisterChip(int ichip, int *mask, int *trimbits);
-
+patternParameters *setInterpolation(int mask);
+patternParameters *setPumpProbe(int mask);
+patternParameters *setDigitalPulsing(int mask);
+patternParameters *setAnalogPulsing(int mask);
+patternParameters *setNegativePolarity(int mask);
+patternParameters *setChipGain(int pgain, int shgain, int acgain);
+int setGainAC(int shgain, int *csr);
+int setGainShaper(int shgain, int *csr);
+int setGainPreamp(int pgain, int *csr);
 
 #endif
diff --git a/slsDetectorServers/mythen3DetectorServer/slsDetectorFunctionList.c b/slsDetectorServers/mythen3DetectorServer/slsDetectorFunctionList.c
index 0e90b32e3..cf9b21e66 100644
--- a/slsDetectorServers/mythen3DetectorServer/slsDetectorFunctionList.c
+++ b/slsDetectorServers/mythen3DetectorServer/slsDetectorFunctionList.c
@@ -1145,8 +1145,6 @@ int setModule(sls_detector_module myMod, char *mess) {
 }
 
 int setTrimbits(int *trimbits) {
-    
-
     // remember previous run clock
     uint32_t prevRunClk = clkDivider[SYSTEM_C0];
     patternParameters *pat=NULL;
@@ -1177,7 +1175,6 @@ int setTrimbits(int *trimbits) {
       }
       LOG(logINFO, ("All trimbits have been loaded\n"));
     }
-
     trimmingPrint = logINFO;
     // set back to previous clock
     if (setClockDivider(SYSTEM_C0, prevRunClk) == FAIL) {
@@ -1188,7 +1185,6 @@ int setTrimbits(int *trimbits) {
     if (error != 0) {
         return FAIL;
     }
-
     return OK;
 }
 
@@ -2664,3 +2660,52 @@ int getNumberOfChips() { return NCHIP; }
 int getNumberOfDACs() { return NDAC; }
 int getNumberOfChannelsPerChip() { return NCHAN; }
 
+int setGain(int gain) {
+    // remember previous run clock
+    uint32_t prevRunClk = clkDivider[SYSTEM_C0];
+    patternParameters *pat=NULL;
+    int error=0;
+    // set to trimming clock
+    if (setClockDivider(SYSTEM_C0, DEFAULT_TRIMMING_RUN_CLKDIV) == FAIL) {
+        LOG(logERROR,
+            ("Could not start trimming. Could not set to trimming clock\n"));
+        return FAIL;
+    }
+    /////////////////////////////////////////////////////////////////
+    int pgain=Cp_10;
+    int shgain=Csh_30;
+    int acgain=Cac_450;
+    /*
+      acgain=gain%2;
+      gain/=2;
+      shgain=gain%8;
+      gain/=8;
+      pgain=gain
+    */
+
+
+    pat=setChipGain(pgain, shgain, acgain);
+    if (pat) {
+	error|=loadPattern(pat);
+	if (error==0) 
+	  startPattern();
+	free(pat);
+      }	else
+	error=1;
+    /////////////////////////////////////////////////////////////////
+    if (error == 0) {
+    
+      LOG(logINFO, ("The gain has been changed\n"));
+    }
+    trimmingPrint = logINFO;
+    // set back to previous clock
+    if (setClockDivider(SYSTEM_C0, prevRunClk) == FAIL) {
+        LOG(logERROR, ("Could not set to previous run clock after trimming\n"));
+        return FAIL;
+    }
+
+    if (error != 0) {
+        return FAIL;
+    }
+    return OK;
+}