diff --git a/test_adc.py b/test_adc.py
index 4fba2bb..be70183 100644
--- a/test_adc.py
+++ b/test_adc.py
@@ -14,21 +14,24 @@ with gex.Client(gex.TrxRawUSB()) as client:
     print(adc.get_channels())
 
     adc.set_active_channels([1])
-    rate=500
+    rate=50000
     fs = adc.set_sample_rate(rate)
 
-    count = 2000
+    time.sleep(0.1)
+    count = 5000
     data = adc.capture(count)
 
     print("rx, %d samples" % len(data))
     data = np.add(data / 4096, -0.5)
 
+    adc.set_sample_rate(1000)
+
     #
     if data is not None:
         # wavfile.write('file.wav', rate, data)
         # print("Ok")
 
-        plt.plot(data, 'r.', lw=1)
+        plt.plot(data, 'r-', lw=1)
         plt.show()
     else:
         print("Nothing rx")
diff --git a/test_adc2.py b/test_adc2.py
new file mode 100644
index 0000000..685267b
--- /dev/null
+++ b/test_adc2.py
@@ -0,0 +1,15 @@
+#!/bin/env python3
+import time
+
+import gex
+import numpy as np
+from matplotlib import pyplot as plt
+
+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())
+
diff --git a/test_dac.py b/test_dac.py
index 7bff9cd..d4b1bc1 100644
--- a/test_dac.py
+++ b/test_dac.py
@@ -24,11 +24,14 @@ with gex.Client(gex.TrxRawUSB()) as client:
     # #
     # dac.sync()
 
-    for i in range(0, 1000):
-        dac.set_frequency(1, i)
-        time.sleep(0.001)
-
-
+    # for i in range(0, 1000):
+    #     dac.set_frequency(1, i)
+    #     time.sleep(0.001)
+
+    dac.waveform(1, 'SIN')
+    dac.set_frequency(1, 1000)
+    time.sleep(2)
+    dac.dc(1, 2047)
 
     # dac.waveform(1, 'SIN')
     # # dac.set_frequency(1, 1000)