Barco Njord, Installation Manual

Page: 88 / 232

R5913593 /01 Njord 88
Advantages of using RS232/RS422 serial communication:
• easy adjustment of the projector via PC (or MAC).
• allow storage of multiple projector configurations and set ups.
• wide range of control possibilities.
• address range from 0 to 255.
• sending data to the projector (update).
• copying data from the projector (backup).
RS232/422 input (Sub-D) port
Pin
Description
1 DCD : Data Carrier Detect
2 RXD- : Receive Data
3 TXD- : Transmitted Data
4 DTR : Data Terminal Ready [RS232] / TXD+ : Transmitted Data [RS422]
5 GND : Ground
6 DSR : Data Set Ready [RS232] / RXD+ : Received Data [RS422]
7 — (not connected) —
8 CTS : Clear To Send
9 RI : Ring Indicator
RS232
An Electronic Industries Association (EIA) serial digital interface standard specifying the
characteristics of the communication path between two devices using either D-SUB 9 pins or D-
SUB 25 pins connectors. This standard is used for relatively short-range communications and does
not specify balanced control lines. RS-232 is a serial control standard with a set number of
conductors, data rate, word length and type of connector to be used. The standard specifies
component connection standards with regard to computer interface. It is also called RS-232-C,
which is the third version of the RS-232 standard, and is functionally identical to the CCITT V.24
standard. Logical '0' is > + 3V, Logical '1' is < - 3V. The range between -3V and +3V is the transition
zone.
RS422
An EIA serial digital interface standard that specifies the electrical characteristics of balanced
(differential) voltage, digital interface circuits. This standard is usable over longer distances than
RS-232. This signal governs the asynchronous transmission of computer data at speeds of up to
920,000 bits per second. It is also used as the serial port standard for Macintosh computers. When
the difference between the 2 lines is < - 0.2V that equals with a logical '0'. When the difference is >
+0.2V that equals to a logical '1'..
USB port
The communication interface is equipped with a master USB port, type “ A ” connector. This USB port will
simplify the service procedures for firmware updates or for downloading the log files without a network
connection.
If the only file on the USB device is the firmware file (a “ *.fw ” file), the projector will automatically start one of
the following processes.
• cornet<version nr>.fw : The projector will upgrade or downgrade, depending on the version number.
• LogExtractor.fw : The log files will be downloaded.
Make sure that any used USB-stick is FAT32 compatible and contains no other files or folders.
Input & Communication