Cheetah Python Camera with USB3 Interface
–
User Manual
December 5, 2017
Page
70
of
78
Rev 1.0
generator as a trigger signal or map it to one of the outputs (refer to the I/O Control
section for more information). Set the discrete number of pulses from 1 to 65535 with a
step of 1. You can also set the following options:
-
Granularity
–
Indicates the number of clock cycles used for each increment of
the width and the period. Four possible options are available: x1, x10, x100 and
x 1000.
-
Width
–
Specifies the amount of time (determined by the granularity) the pulse
remains at a high level before falling to a low level. Minimum value is 1,
maximum is 524,287.
-
Period
–
Indicates the amount of time (also determined by the granularity)
between consecutive pulses. Minimum value is 1; maximum is 1,048,575.
Period
Width
Figure 43: Internal pulse generator.
5.10 Input / Output Control
5.10.1 Input / Output Mapping
The camera has two external inputs (1 TTL input and 1 opto-coupled input) and two
external outputs (1 TTL output and 1 opto-coupled switch) wired to the 12-pin HIROSE
connector on the back of the camera. You can map either one of the two external inputs
to the Trigger input to the camera. You can map camera outputs to Trigger, Pulse
Generator, Strobe One, or Strobe Two. For each mapped signal, select either active High
or active Low. The following tables show all possible mapping options for the camera
inputs and outputs:
Input Signal
IN1
IN2
Trigger
✓
✓
Table 6: Cheetah Input Mapping.
Output Signal
OUT1
OUT2
Trigger
✓
✓
Pulse Generator
✓
✓
Strobe One
✓
✓
Strobe Two
✓
✓
Table 7: Cheetah Output Mapping.
