Sensor Readout Optimisation

To allow the camera to be optimized for the widest range of applications it is important to have flexibility in the readout options available, some of these include the following:

  • Gain Channel Control

  • Pixel Readout Rate

  • ROI sub image settings

  • Triggering / Synchronization options (see Trigger Modes)

The effect of different shutter modes, readout speed and different ROIs on frame rates is shown in Maximum sustainable frame rates for all electronic shutter modes, readout speeds and gain channel combinations for various (vertically centred) ROIs.

Maximum sustainable frame rates for all electronic shutter modes, readout speeds and gain channel combinations for various (vertically centred) ROIs

Region of Interest Shutter Mode Bit-depth Zyla 5.5 3-tap Zyla 5.5 10-tap Zyla 4.2 10-tap Zyla 5.5 USB 3.0 Zyla 4.2 USB 3.0
200 MHz 560 MHz 200 MHz 560 MHz 216 MHz 540 MHz 200 MHz 560 MHz 216 MHz 540 MHz
2560 x 2160 Rolling 12-bit 30 30 36 100 - - 36 40 - -
16-bit 22 22 36 75 - - 30 30 - -
Global 12-bit 18 30 18 49 - - 18 40 - -
16-bit 18 22 18 49 - - 18 30 - -
2048 x 2048 Rolling 12-bit 38 39 38 105 40 100 38 53 40 53
16-bit 29 29 38 98 40 100 38 40 40 40
Global 12-bit 19 39 19 52 - - 19 52 - -
16-bit 19 29 19 52 - - 19 52 - -
1920 x 1080 Rolling 12-bit 72 79 72 199 76 192 72 107 76 107
16-bit 59 59 72 199 76 192 72 80 76 80
Global 12-bit 35 79 35 97 - - 35 98 - -
16-bit 35 59 35 97 - - 35 80 - -
512 x 512 Rolling 12-bit 152 419 152 419 161 403 152 419 161 403
16-bit 152 419 152 419 161 403 152 419 161 403
Global 12-bit 73 201 73 201 - - 73 201 - -
16-bit 73 201 73 201 - - 73 201 - -
128 x 128 Rolling 12-bit 596 1639 596 1639 631 1578 596 1639 631 1578
16-bit 596 1639 596 1639 631 1578 596 1639 631 1578
Global 12-bit 260 716 260 716 - - 260 716 - -
16-bit 260 716 260 716 - - 260 716 - -

 

Note
The write speed of the PC hard drive can impose a further restriction on the maximum sustainable frame rate.