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80 DSR1021/1022 Switch Installer/User Guide
Appendix C: Using DSRIQ-SRL Modules
The DSRIQ-SRL module is a serial-to-VGA converter that permits VT100-capable devices to be
viewed from the DSR1021/1022 switch local port or by using the DSView 3 software. The actual
serial data is not accessed but is merely displayed. All serial data coming from the target device is
displayed in a VT100 window, placed into a video buffer and sent to the DSR1021/1022 switch as
though it came from a VGA target. Likewise, keystrokes entered on a keyboard are sent to the
attached device as though they were typed upon a VT100 terminal.
DSRIQ-SRL module modes
You can access the following modes from the DSRIQ-SRL module:
• On-Line: This mode enables you to send and receive serial data.
• Configuration: This mode enables you to specify DSR1021/1022 switch communication
parameters, the appearance of the Terminal Applications menu and key combinations for
specific actions and macros.
• History: This mode enables you to review serial data.
Configuring the DSRIQ-SRL module
NOTE: The DSRIQ-SRL module is a DCE device and supports only VT100 terminal emulation.
Pressing Ctrl-F8 activates the Configuration screen of the DSRIQ module’s Terminal Applications
menu, which enables you to configure your DSRIQ-SRL module.
NOTE: When any Terminal Applications menu is active, pressing Enter saves changes and returns you to the
previous screen. Pressing Escape returns you to the previous screen without saving changes.
Within the Terminal Applications menu’s Configuration screen, you can modify the
following
options:
• Baud Rate: Use this option to specify the serial port communications speed. Available options
are 300, 1200, 2400, 9600, 19,200, 34,800, 57,600 or 115,200 bps. The default value is
9600.
• Parity: Use this option to specify the serial port’s communications parity. Available options
are EVEN, ODD or NONE. The default value is NONE.
• Flow Control: Use this option to specify the type of serial flow control. Available options are
NONE, XOn/XOff (software) and RTS/CTS (hardware). The default value is NONE. If you
select a bps rate of 115,200, the only available flow control is RTS/CTS (hardware).
• DSR/CD Mode: Use this option to control how the DSR1021/1022 switch and CD lines
operate. Available options are Always on and Toggle. When in Toggle mode, DSR and CD
lines are turned off for one-half second and then turned on each time a module is selected or
deselected. The default value is Always on.