CHEETAH Hardware User’s Manual
Imperx, Inc.
Rev 1.7
6421 Congress Ave.
8/26/2016
Boca Raton, FL 33487
+1 (561) 989-0006
45 of 121
MSB
Camera Output - 10 bits
LSB
D9
D8
D7 D6 D5 D4 D3 D2
D1 D0
P10
P9
P8 P7 P6 P5 P4 P3
P2 P1
MSB Camera Output - 8 bits
LSB
D7
D6
D5 D4 D3 D2 D1 D0
P10
P9
P8 P7 P6 P5 P4 P3
Figure 19:
10-bit internal Digitization with 8 and 10-bit outputs
2.8.2 Output Taps
CHEETAH camera series supports Camera Link Base (2 Tap), Medium (4 tap), Full
(8 tap) or Deca (10 taps). The amount of data that can be transferred per unit time
increases with the number of taps selected. The camera reduces the image sensor
output rate to match the bandwidth of the output based on the number of taps
selected, the user can fine-tune the line time to match the frame grabber capture rate
by adjusting the pixel clock.
2.9
PULSE GENERATOR
The camera has a built-in pulse generator. The user can program the camera to generate
a discrete sequence of pulses or a continuous sequence – Figure 20. The pulse generator
can be used as a trigger signal, or can be mapped to one of the outputs – refer to “I/O
Control” section for more information. The discrete number of pulse can be set from 1 to
65535 with a step of 1. The user has options to set:
-
Granularity
– Indicates the number of clock cycles that are used for each increment
of the width and the period. Four possible options are available (x1, x10, x100 and x
1000).
-
Period –
Indicates the amount of time (also determined by the granularity) between
consecutive pulses. Minimum value is 1, maximum is 1,048,575
-
Width –
Specifies the amount of time (determined by the granularity) that the pulse
remains at a high level before falling to a low level. Minimum value is 1, maximum
is 524,287.
