Photometrics Evolve 512, Руководство пользователя

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32 Evolve 512 Users Manual
I/O Connector
Pinout
The I/O (Input/Output Status) connector located on the power supply provides TTL level
trigger and status functions. Inputs must be at least 3.15 V for a high and less than 0.9 V for a
low.
The numbers on the I/O connector diagram correspond to the numbers given to the
definition of each of the pins. The I/O connector is a female, Hirose HR10A connector. An
I/O cable (Part # 37-513-001) to access Trigger Input (Pin 1), Frame Readout (Pin 3), Camera
exposing output (Pin 2), and Shutter Output (Pin 4) is available.
Figure 25. Input/Output Connector
INPUT/OUTPUT (I/O) TABLE
#
I/O INPUT DESCRIPTION
1
Trigger Input
This input is internally tied high through a 4.7k

resistor. A
rising edge of the Trigger Input signal initiates the trigger. The
trigger source would normally hold this input low and then drive
it high to initiate the trigger.
2
Camera Exposing
Output Active high. A high level on this output indicates that the
camera is exposing (integrating).
3
Frame Readout Active high. A high level on this output indicates that data is
being transferred.
4
Shutter Output TTL output for timing of external shutter driver. Signal is high
during Shutter Open Delay and exposure time. The pin does
not provide power to drive the shutter directly, so an external
shutter drive controller is required.
5
Spare Input Reserved
6
Trigger Ready This output notifies accessory devices that the camera is ready
to receive a trigger.
7
TX Out Accessory Serial Transmit
8
RX IN Accessory Serial Receive
9
Power Status A high level on this output indicates that the camera power is
switched on (+5 V = on, 0 V = off).
10
GND System digital ground. Any external circuitry intended to
interface with the trigger control signals must reference this
ground connection.
Table 4. Input/Output Definitions