User`s manual

AW00049313000 Physical Interface
Basler runner 57
Using the Inputs with LVTTL
A camera input line can accept a Low Voltage TTL signal when the signal is input into the camera
as shown in Figure 23.
The following voltage requirements apply to the camera’s I/O input (pin 2 of the 12-pin receptacle):
When LVTTL signals are applied to an input, the 120 ohm termination resistor on that input must
be disabled. The input will not react to LVTTL signals if the resistor is enabled.
For the camera’s I/O circuitry to operate properly, you must supply a ground as shown Figure 23.
Fig. 23: Inputting Low Voltage TTL Signals
Voltage Significance
+0 to + 5.0 VDC Recommended operating voltage.
+0 to +0.8 VDC The voltage indicates a logical 0.
> +0.8 to +2.0 VDC Region where the transition threshold occurs; the logical state is not defined in this
region.
> +2.0 VDC The voltage indicates a logical 1.
+6.0 VDC Absolute maximum; the camera may be damaged when the absolute maximum is
exceeded.
Table 6: Voltage Requirements for the I/O Input When Using LVTTL
1
2
3
4
5
10
6
7
8
9
11
12
Camera
12-pin
Receptacle
Not
Connected
I/O In 1 +
3.3 V
120

To
FPGA
(control)
10
k
8.2
k
3.3 VGnd
Gnd
Your
Gnd
Your 0 to +5 VDC
TTL Input Signal
RS-422
Transceiver
RS-422 Transceiver =
Linear Technology LTC 2855
or the equivalent
Receiver
Driver
Gnd