Improvement of inject_analog_single for sync FE

Doing tests in Torino we noticed that having global pulse width equal to 8 and 9 and just 20 syncs after global pulse and ecr results in a higher noise rate due to the already known effects related to the end of the AZ period. So the suggestion is to increase the number of syncs from 20 to 60 (as shown below) in order to be sure than even width = 9 fits well.

def inject_analog_single(self, repetitions=1, latency=122, wait_cycles=400, send_ecr=False, write=True): ''' Injects a single analog pulse in all enabled pixels

        ----------
        Parameters:
            latency : int
                Number of write_sync commands between injection and trigger
    '''

    indata = self.write_sync_01(write=False)
#indata += self.write_global_pulse(width=8, write=False)
    if send_ecr:
        indata += self.write_global_pulse(width=8, write=False)
        indata += self.write_ecr(write=False)
        indata += self.write_sync_01(write=False) * 60   #40 #20 --- FIX 10-9-2018

    indata += self.write_cal(cal_edge_mode=0, cal_edge_width=1, cal_edge_dly=0, write=False)        # CalEdge -> 1 (inject)
    indata += self.write_sync_01(write=False) * latency                                               # Wait for latency
    indata += self.send_trigger(trigger=0b1111, write=False) * 8                                      # Trigger
    indata += self.write_cal(cal_edge_mode=1, cal_edge_width=0, cal_edge_dly=0, write=False)        # CalEdge -> 0

    if self.board_version != 'SIMULATION':
        indata += self.write_sync_01(write=False) * wait_cycles                                                # Wait for data

    if write:
        self.write_command(indata, repetitions=repetitions)

    return indata