Spyder3 SG-34 GigE Vision Color Manual 77
Teledyne DALSA 03-032-20124-00
Multiplicator
The multiplier applied to the input frequency. The possible values are:
Frequency is multiplied by 256 (PLC_rsI0_Multiplier = FrequencyX256)
Frequency is multiplied by 16 (PLC_rsI0_Multiplier = FrequencyX16)
Frequency is multiplied by 4096 (PLC_rsI0_Multiplier = FrequencyX4096)
Divider
The divider applied to the input frequency. The resulting frequency is computed as follows:
Input Selection
Indicates which label in the GPIO LUT will be associated with the rescaler. Make sure you select an input label
that is not being used for its default behavior. For example, Q9 is used to send a trigger to pulse generator 0. If
pulse generator 0 is used in triggered mode, then it will be triggered by Q9 and cannot be used as the input for
the rescaler. The possible values are: Q3, Q7, Q8. Q9, Q10, Q11, Q16, and Q17.
Backup Enabled
Indicates if the rescaler will use a back-up input source if its main source stops its activity.
Backup Window
Specifies the window of time during which there can be no activity from the main input source before the
rescaler switches to the back-up source. As soon as activity is detected, the rescaler returns to its main input
source.
Backup Input
Same as the main input source
Granularity
Indicates the number of PCI clock cycles that are used for each increment of the delay and width. The amount
specified in the granularity is multiplied by 30 nanoseconds.
Other Rescaler equations are:
Granularity_setting = [1, 4, 16, 256]
Multiplier_setting = [16, 256, 4096]
Divider_setting [15:0] = [0..65535]
Granularity = 30ns x Granularity_setting
sig_in_period_counter [15:0] = MIN( INT( Signal_In_Period / Granularity ), 65535)
multiplier_out [31:0] = sig_in_period_counter[15:0] x Multiplier_setting[15:0]
divider_ou t[27:0] = INT ( multiplier_out[31:0] / Divider_setting )
Signal_Out_Period = MAX( divider_out[27:0], 2 ) x Granularity
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