GE iBox Installation And Maintenance Manual page 34

iBox/iBox Kit
Installation and Maintenance Guide
Connecting Serial Interfaces
COM1 In addition to the standard characteristics, COM1 has the following optional
Options characteristics:
• Jumper-selectable (JP3) radio key, open-collector output
• Communication parameters, determined by the protocol application.
COM2 COM2 can optionally be used to connect to a satellite time-code receiver, as follows:
Options
IRIG-B Output IRIG-B receivers are available with modulated and/or unmodulated output options. If
Options the unmodulated output of the receiver is a coaxial connection, a converter will be
required to interface to the iBox.
COM Ports COM ports provide the following:
• Variable communication parameters
• Optional software flow control
• Optional hardware flow control
• Out-of-sequence transmission of one byte of data
• Support for several I/O timers
• Transmission of break characters
COM Port The COM1, COM2 and COM3 serial ports are programmed using SGConfig for:
Options
• RS-232 or RS-485
• RS-485 2-wire or 4-wire (2W/4W)
Note: The 2W/4W selection in SGConfig only affects the interface's internal
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Time code J3 Pin
IRIG-B 8
Rugby Clock 2
5
software control (handshaking). It does not change the physical
characteristics of the communication ports.
994-0047-5.10-4
Interface Signal
RS-232 CTS2
RS-232 RX2
RS-232 COM
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