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FLEXNET – FNER Expandable (Modular) Routing Switches – Installation & Operation Manual
CHAPTER 11: APPENDIX
11.3 Problems with Crosspoint Connections
No signal is passing at all. The connection is shown as
being made but no switch occurred.
1. First, be certain that all coaxial cables are properly
connected, and that all control cables are connected and in
good working conditioning. Refer to the appendix for your
system connections.
2. Type in a different path to verify that the units are switching.
For example, if you cannot route to Input 7, try routing Input
8. Try this for several different inputs.
3. If the units are switching, verify that the signal you
requested is actually there (the system is DC blocked and
will not allow receivers to power LNBs). It is useful to monitor
the system with some type of analyzer.
4. Make sure that the matrix size is set correctly. The
actual matrix size will only switch up to the set matrix size.
Alternately, if the MPC 128 is set larger, it will show inputs
that are not physically available.
The option to change or lock/unlock a crosspoint is not
available.
1. You are logged in as a user with assigned permissions.
The Admin has assigned permissions to your account. Your
account denys you the ability to change the output
2. Access control is on for the port and you are not logged in.
The signal is passing at a low level.
Using appropriate equipment, check the signal level. If it is
below specifications, contact ATX Networks for asistance.
The monitor and control menu lists the wrong number of
inputs.
Someone incorrectly changed settings under the
configuration menu. Refer to the
and contact ATX Networks for technical assistance.
11.4 Serial Port Problems
The MPC 128 will not respond to protocol commands on the
Control In serial port.
1. Make sure that you are NOT using a null modem cable or
null modem adapter. Use a straight through 1 to 1 pin cable
2. If using RS-232, check that the serial cable from the
computer is connected to the Control In DB-9 connector port
on the back panel. Not the Control Out port.
3. Make sure that the address in the commands being sent
matches the serial address set for the MPC 128.
4. Make the COM port you are using on the computer
matches the COM port the matrix control software is set at.
5. Check that the serial interface mode (RS-232 or RS-
485/422 is correct.
6. If using RS-422/485 make sure the termination settings
are correct.
7 Make sure the data protocol is 8 bit 1 stop bit no parity and
9600bps.
