PCO.IMAGING pco.1200 hs, Руководство пользователя

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Chapter 3
‚
Camera Functions
page 23
trigger edge
2 - ON: rising
2 - OFF: trailing
trigger sensitivity
1 - ON: TTL level
1 - OFF: 10-15V
1
2
1
2
-
+
-
+
6.7V
1.7V
select edge type
DIP switch 2
select sensitivity
DIP switch 1
exp trig
BNC input
Ri = 10k W
exposure trigger
(internal)
acq. enable logic level
3 - ON: HIGH (>2V or 7V)
3 - OFF: LOW (<1.5V or 6.5V)
acq. enbl. sensitivity
4 - ON: TTL level
4 - OFF: 10-15V
1
2
1
2
-
+
-
+
6.7V
1.7V
select logic level
DIP switch 3
select sensitivity
DIP switch 4
acq enbl
BNC input
Ri = 10k W
acquire enable
(internal)
Figure 3.18: Illustration of the signal processing of input signals [control in]
and their external control features
The signal processing internal sequence requires that the
[acq. enbl.] signal precedes the [exp. trig.] and subse-
quently comes before the actual exposure, as an invalid
[acq. enbl.] can prevent an exposure from being started.
The only way to interrupt an image sequence recording in
the exposure control mode [auto sequence] is to use the
[acq. enbl.] command.
3.3.5 Status Signals
Status signals are signals generated by the camera for
synchronization purposes.
The [exp] signal is HIGH during exposure and LOW at all
other times.
The [busy] signal is active if the camera is recording or
when it is switched on. Occasionally, a “false or low busy”
signal is read. This happens when the camera setup is
complete and no trigger has been detected, meaning that
the camera is ready to receive trigger signals for expo-
sures.
When the camera system is switched on, the [busy] signal
reads HIGH for a short period of time.
The signals [status out] pass as +5V TTL signals to a 27
Ω
output resistor (short circuit protection) and they are pro-
vided at the two BNC output sockets (see Figure 3.19).
User Manual pco.camera status 12/2004