diff --git a/pypcc/config/RECVTR_HB.yaml b/pypcc/config/RECVTR_HB.yaml
index 0e8a758b227300c8f02e5533134ddf0050347e1e..52745e356ddd292bd97600c47011357b139bfbf7 100644
--- a/pypcc/config/RECVTR_HB.yaml
+++ b/pypcc/config/RECVTR_HB.yaml
@@ -200,6 +200,9 @@ device_registers:
     - name: CML_level
       description: CML output adjust
       address: 0x15
+    - name: PREEM
+      description: Set Peemphasis on
+      address: 0xA8
     - name: Update
       description: Global device uptate
       address: 0xFF
@@ -612,6 +615,16 @@ variables:
      dim2: [3,32]
      debug: true
 
+   - name: RCU_ADC_PREEM
+     driver: I2C_RCU
+     devreg:  [ADC1.PREEM,ADC2.PREEM,ADC3.PREEM]
+     width: 8
+     rw:  ro
+     dtype: uint8
+     dim: 96
+     dim2: [3,32]
+     debug: true
+
    - name: RCU_DTH_freq
      description: RCU Dither source frequency (Hz). Should be around 102MHz.
      driver: I2C_RCU
@@ -913,7 +926,8 @@ methods:
     instructions:
      - ADC1.JESD_control1 : 0x14
      - ADC1.SYNC_control: 1  #Setup ADCs
-     - ADC1.CML_level: 0x7
+     - ADC1.CML_level: 0x5
+     - ADC1.PREEM: 0x14
      - ADC1.dither : 0x00
      - ADC1.Update: 1       #Needed to update ADC registers
      
@@ -924,7 +938,8 @@ methods:
     instructions:
      - ADC2.JESD_control1 : 0x14
      - ADC2.SYNC_control: 1  #Setup ADCs
-     - ADC2.CML_level: 0x7
+     - ADC2.CML_level: 0x5
+     - ADC2.PREEM: 0x14
      - ADC2.dither : 0x00
      - ADC2.Update: 1       #Needed to update ADC registers
 
@@ -935,7 +950,8 @@ methods:
     instructions:
      - ADC3.JESD_control1 : 0x14
      - ADC3.SYNC_control: 1  #Setup ADCs
-     - ADC3.CML_level: 0x7
+     - ADC3.CML_level: 0x5
+     - ADC3.PREEM: 0x14
      - ADC3.dither : 0x00
      - ADC3.Update: 1       #Needed to update ADC registers