Specifications

Quintech Electronics and Communications Inc.
SRX Series Switching System Rev. A
18
The SRX will not respond to protocol commands on the Serial Port.
Make sure that the address in the commands being sent matches the serial address set for the
SRX. Check that the serial interface mode (RS-232 or RS-485) is correct and that the serial
cable from the computer is connected to the CONTROL IN DB-9 connector port on the back
panel. If you are using RS-232, make sure that no null modem is being used in the control path.
The SRX will not respond to protocol commands on the Ethernet QEC Port.
Make sure that the serial address in the commands being sent is either set as “FF” or matches the
serial address set for the SRX. Make sure that the SRX IP address matches the target address
used by the control computer. Make sure that the control computer is sending the commands to
port 9100. Make sure that the netmask and/or gateway are correctly set for your network. If the
SRX is connected directly to the network port of another computer, make sure that a crossover
cable is being used. If the SRX is connected to a router, make sure that a standard cable is being
used, that the router detects the connection to the SRX, and that the router is connected to the
same network as the control computer.
The signal is passing at a low level.
Using appropriate equipment, check the signal level. If it is below specifications, contact the
factory.
The SRX will not connect using Telnet.
Make sure that another Telnet session is not currently open. Only one Telnet session at a time is
allowed.