Black Box cat5kvm micro extender manual CPU receives garbage from its serial device or vice versa

SERVSWITCH™ BRAND CAT5 KVM MICRO EXTENDER

8.1.4SERIAL DEVICE (ACU3022A KVM/SERIAL/AUDIO SYSTEMS ONLY)

The CPU doesn’t detect the serial device I’m trying to use with it.

1.Make sure that the data rates of the device and the CPU’s serial port both match, and that the data rate doesn’t exceed 19,200 bps.

2.Make sure that the device and your PC’s driver or serial-communication program are using the same type of flow control.

The CPU doesn’t seem to receive anything from its serial device or vice versa.

1.If possible, attach the serial device directly to the CPU. If it works, skip to #2. If it doesn’t, is the device actually standard RS-232? Is it a device the CPU supports? Is a driver for the device loaded, or is software running, that enables the CPU to recognize input from the device?

2.Check the serial cables. Are they intact along their length and securely connected at both ends?

3.Check the data rate. Is the device operating at a rate not exceeding 19,200 bps? Is the CPU’s serial port set to the same data rate?

4.Check the data format and flow control. Are the device and your PC’s driver or serial-communication program using the same format and flow-control type?

5.Is your PC a UNIX® workstation? In order to operate correctly, some UNIX workstations need to see the DCD signal from the serial device, but the Extender doesn’t carry DCD. Call Black Box Technical Support if you’ve ruled out the other possibilities and suspect that this might be your problem.

The CPU receives garbage from its serial device or vice versa.

1.Make sure that the data rates of the device and the CPU’s serial port both match, and that the data rate doesn’t exceed 19,200 bps.

2.Make sure that the device and your PC’s driver or serial-communication program are using the same data format.

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