var properties = new NameValueCollection();
properties["quartz.threadPool.threadCount"] = "1";
var schedFact = new StdSchedulerFactory(properties);
.
.
.
internal class SendDataToServer : IJob
{
    public void Execute(IJobExecutionContext context)
    {
        int a = 1;
    Thread.Sleep(some amount bigger than scheduled job time);
    }
}