Daheng Imaging VEN-134-90U3M-D, Руководство пользователя

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2. Electrical Interface
© China Daheng Group, Inc. Beijing Image Vision Technology Branch 10

Rising time delay = t
r
+t
d
: <20μs (0°C
~45°C) (parameter description as shown in Figure 2-5).

Falling time delay = t
s
+t
f
: <20μs (0°C~45°C) (parameter description as shown in
Figure 2-5).

Delay parameters are affected greatly by external voltage and resistance, but little by temperature.
Output delays in typical application conditions (temperature is 25°C) are shown in Table 2-3.
t
d
t
s
t
r
t
f
90%
10%
OUTPUT2
LINE2
Figure 2-5 Time delay parameter of the circuit when Line2 is configured as output
Parameter Test Conditions Value (us)
Storage time (t
s
)
External power is 5V,
pull-
up resistor is 1kΩ
0.17 ~ 0.18
Delay time (t
d
) 0.08 ~ 0.09
Rising time (t
r
) 0.11 ~ 0.16
Falling time (t
f
) 1.82 ~ 1.94
Rising time delay = t
r
+t
d
0.19 ~ 0.26
Falling time delay = t
f
+t
s
1.97 ~ 2.09
Table 2-3 Delay time when Line2 is configured as output in typical application conditions

When Line2/3 is configured as output, the equivalent circuit of camera is shown as Figure 2-6, for
Line2 as an example.
EXVCC(5-24V)
Line2
OUTPUT2
PTC
External Circuits
Signal to User
Rexternal
GND
Figure 2-6 Equivalent circuit of camera when Line2 is configured as output