User`s manual

4M30 Camera User’s Manual 15
DALSA 03-32-10030-03
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Serial Communication Settings
Table 9: Serial Port Configuration
Serial Port Configuration
Baud 9600, fixed
Start bits 1
Data bits 8
Stop bits 1
Parity None
The serial interface operates at RS-232 levels with fixed parameters of 9600 baud, 1 start
bit, 8 data bits, 1 stop bit, and no parity. The interface uses only three wires, for received
data, transmitted data, and ground. In general writing data must start with a write
command byte and be followed by a data byte. Reading a camera register requires only a
single read command byte.
WARNING: Due to initialization sequencing after power-up, no commands should be sent
to the camera for a minimum of 1 second after power up.
Serial Cable Source
The remote interface connector, on the
cameras rear panel, is specified as a low-
profile RJ-11 modular connector. The
connector is a 6-position model, but only the
center four positions are populated with
contacts. It will mate with either the 4-
position or 6-position cable plugs. This type
of connector typically requires special
assembly tools; complete cable assemblies are
available from suppliers such as Digi-Key:
Digi-Key
701 Brooks Ave. South
Thief River Falls, MN 56701
1-800-344-4539
cable part number:
H2643-14-ND (14 feet)
DALSA provides serial cables in 3 lengths: 10’, 20’ and 50’. Part number CL-31-00004-
xx (where xx refers to the cable length in feet).
2.7 TTL Trigger Input and Output
Connector
The camera uses an SMA connector (labeled TRIGGER IN) to allow the user to provide a
standard TTL signal to control camera integration and readout. The input is high
impedance (>10.5K), allowing the user to terminate at the SMA input as needed. The
camera has another SMA connector (TRIGGER OUT) that provides a standard TTL
output which is high whenever the camera is integrating.