fix(tests): Reduce samples

Author: epage

tests/test_signals.py

@@ -127,7 +127,7 @@ def test_waveform_loopback(nixnet_in_interface, nixnet_out_interface):
             # frame value sent before the initial read will be received.
             input_session.start()
 
-            signal_ramp = generate_ramp(4, 11, output_session.signals.resamp_rate, 1)
+            signal_ramp = generate_ramp(4, 11, output_session.signals.resamp_rate, 0.25)
             output_session.signals.write([signal_ramp])
 
             # Wait 1 s and then read the received values.