diff --git a/fast-servo/pyfastservo/loopback.py b/fast-servo/pyfastservo/loopback.py
index 12f0a8e..13ee77b 100644
--- a/fast-servo/pyfastservo/loopback.py
+++ b/fast-servo/pyfastservo/loopback.py
@@ -1,25 +1,24 @@
 import time
 from pyfastservo import adc, dac
 from pyfastservo.common import (
-    ADC_CH0_HIGH_ADDR,
-    ADC_CH0_LOW_ADDR,
-    CH0_HIGH_WORD_ADDR,
-    CH0_LOW_WORD_ADDR,
+    ADC_CH1_HIGH_ADDR,
+    ADC_CH1_LOW_ADDR,
+    CH1_HIGH_WORD_ADDR,
+    CH1_LOW_WORD_ADDR,
     read_from_memory,
     write_to_memory
 )
-###
 
 def read_adc():
-    adc_value = adc.read_adc_channel(ADC_CH0_HIGH_ADDR, ADC_CH0_LOW_ADDR)
+    adc_value = adc.read_adc_channel(ADC_CH1_HIGH_ADDR, ADC_CH1_LOW_ADDR)
     return adc_value
 
 def write_dac(value):
     dac.set_dac_output(value)
 
 def read_dac():
-    high_word = read_from_memory(CH0_HIGH_WORD_ADDR, 1)[0]
-    low_word = read_from_memory(CH0_LOW_WORD_ADDR, 1)[0]
+    high_word = read_from_memory(CH1_HIGH_WORD_ADDR, 1)[0]
+    low_word = read_from_memory(CH1_LOW_WORD_ADDR, 1)[0]
     return (high_word << 8) | low_word
 
 def perform_loopback_test(test_value):