Chapter 3
Camera Functions
page 17
auto sequence
In the [auto sequence] exposure control mode, the cam-
era determines the fastest possible image uptake rate de-
pending on the adjusted delay and exposure times and
the required readout time. After a start command is given,
the sequential recording is started until a stop command
is given. If the sequential recording is active, the re-
cording can only be interrupted by a negative external
signal: [acq. enbl.] (acquire enable). Before each image of
a sequence is recorded, the camera checks the status of
the [acq. enbl.] whether or not it is valid and if it has been
previously initialized.
soft trigger
In the [soft trigger] exposure control mode, a single image
recording is forced by a software command. In the
cam-
ware
application software, this is done by clicking on the
corresponding record button. Other signals cannot influ-
ence this operating mode.
exp. trigger start
In the [exp. trigger start] exposure control mode, single
image recording is started by the trailing or rising edge of
the voltage signal at the BNC input [exp. trig.] (see Figure
3.17 on page 22). Additionally, if it has been initialized, the
status of the [acq. enbl.] signal at the BNC input is
checked. Therefore, both signals are important for image
recording.
exp. trigger ctrl.
In [exp. trigger ctrl.] exposure control mode, single image
recording is controlled by the time length of the BNC in-
put signal [exp. trig.] (see Figure 3.17 on page 22). The
exposure time is determined by the signal (depending on
the DIP switch setting to a positive or negative voltage
level). Additionally, if it has been initialized, the status of
the [acq. enbl.] signal at the BNC input is checked. There-
fore both signals are important for image recording.
Figure 3.8 shows the relationship between the various
memory operating modes (camRAM modes), exposure
control (trigger modes) and the chance to control the
camera via external trigger signals (external signal op-
tions).
soft trigger
exp trig
exp trig
camRAM modes
trigger modes
external signals
auto sequence
exp. trigger ctrl.
exp. trigger start
FIFO-buffer
recorder - sequential
recorder - ring buffer
FIFO-buffer
recorder - sequential
recorder - ring buffer
FIFO-buffer
recorder - sequential
recorder - ring buffer
FIFO-buffer
recorder - sequential
recorder - ring buffer
acq enbl
acq enbl
acq enbl
}
}
}
}
Figure 3.8:
Relationship between the memory operation mode, exposure
control and trigger signals
User Manual pco.camera status 12/2004
Summary of Contents for pco.1200 hs
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