diff --git a/gex/units/ADC.py b/gex/units/ADC.py
index 660b0dd..980ad97 100644
--- a/gex/units/ADC.py
+++ b/gex/units/ADC.py
@@ -273,9 +273,9 @@ class ADC(gex.Unit):
         """
 
         nedge = 0
-        if edge == 'rising':
+        if edge == 'rising' or edge == 'up':
             nedge = 1
-        elif edge == 'falling':
+        elif edge == 'falling' or edge == 'down':
             nedge = 2
         elif edge == 'both':
             nedge = 3
diff --git a/test_adc2.py b/test_adc2.py
index 685267b..32ccbf8 100644
--- a/test_adc2.py
+++ b/test_adc2.py
@@ -10,6 +10,8 @@ from scipy.io import wavfile
 with gex.Client(gex.TrxRawUSB()) as client:
     adc = gex.ADC(client, 'adc')
 
-    for i in range(1000):
-        print(adc.read_raw())
+    print(adc.capture(100))
+
+    # for i in range(1000):
+    #     print(adc.read_raw())
 
diff --git a/test_adc_trig.py b/test_adc_trig.py
new file mode 100644
index 0000000..45a4793
--- /dev/null
+++ b/test_adc_trig.py
@@ -0,0 +1,32 @@
+#!/bin/env python3
+import time
+
+import gex
+import numpy as np
+from matplotlib import pyplot as plt
+
+from scipy.io import wavfile
+
+# def show(tr):
+#     data = tr.data
+#     data = np.add(data / 4096, -0.5)
+#     plt.plot(data, 'r-', lw=1)
+#     plt.show()
+
+with gex.Client(gex.TrxRawUSB()) as client:
+    adc = gex.ADC(client, 'adc')
+
+    adc.on_trigger(lambda tr: print(tr.data))
+    adc.setup_trigger(1,
+                      level=3500,
+                      count=500,
+                      edge='rising',
+                      pretrigger=100,
+                      holdoff=100,
+                      auto=True)
+
+    adc.arm()
+
+    while True:
+        print('tick')
+        time.sleep(1)