Add 1 second delay before applying port voltage to headstage-64

- During a restart, the headstage is turned off and then on again very rapidly.
  This seems to cause the serializer not to be completely shut down and to be
  in an indeterminate state. To combat this, I've simply added a delay before
  the first voltage to turn the headstage on is applied.

Author: jonnew

OpenEphys.Onix1/ConfigureHeadstage64.cs

@@ -148,6 +148,17 @@ internal override IEnumerable<IDeviceConfiguration> GetDevices()
 
         class ConfigureHeadstage64PortController : ConfigurePortController
         {
+
+            protected override bool ConfigurePortVoltageOverride(DeviceContext device, double voltage)
+            {
+                // NB: Wait for 1 second to discharge the headstage in the case that they have e.g. just
+                // restarted the workflow automatically with nearly no delay from the last run. 
+                Thread.Sleep(1000);
+                device.WriteRegister(PortController.PORTVOLTAGE, (uint)(voltage * 10));
+                Thread.Sleep(500);
+                return CheckLinkState(device);
+            }
+
             protected override bool ConfigurePortVoltage(DeviceContext device, out double voltage)
             {
                 // WONTFIX: It takes a huge amount of time to get to 0, almost 10 seconds. The best we can do
@@ -159,6 +170,10 @@ protected override bool ConfigurePortVoltage(DeviceContext device, out double vo
                 const double VoltageOffset = 3.4;
                 const double VoltageIncrement = 0.2;
 
+                // NB: Wait for 1 second to discharge the headstage in the case that they have e.g. just
+                // restarted the workflow automatically with nearly no delay from the last run. 
+                Thread.Sleep(1000);
+
                 // Start with highest voltage and ramp it down to find lowest lock voltage
                 voltage = MaxVoltage;
                 for (; voltage >= MinVoltage; voltage -= VoltageIncrement)