Adder Technology CATX-USB-DA Host computer connections, EDID display information, Audio, Video

Host computer connections

The module does not require a power adapter because it derives all of its power from the host computer. Therefore the USB cable must always be connected to a USB port on the computer that is capable of providing up to 500mA.

Audio

*

USB

*Not fitted on

CATX-USB-DA models

Video

	port	*
Serial

EDID display information

The module contains a default set of EDID information that supports display resolutions up to 1600 x 1200 @ 60Hz. In addition, the module will check during power up whether alternative EDID information is available from the KVM switch or extender that is connected to port A. If required, you can also harvest and store new EDID information from your display or an Adder DDC Ghost device.

Serial port configuration

Resolutions and cable lengths

The maximum resolutions achievable are: 1600 x 1200 x 60Hz at 200m and 1280 x 1024 x 60Hz at 300m.

Do not exceed 300m cable lengths in any installation.

Disabling/re-enabling receiver connections

When required, a user of one remote link can disable (and re- enable) the other remote link using serial port commands (this feature is available only on the CATX-USBA-DA models). To do this you need to determine two things: a) The Com port to which the serial connector is attached and b) which of the two remote ports you are using (A or B). See also ‘Serial port configuration’.

1From one of the remote keyboards, open a terminal program on the computer and use it to send the appropriate character to the Com port to which the module is attached:

Port	Disable character	Enable character
A	a (0x61)	A (0x41)
B	b (0x62)	B (0x42)

The module will return OK or FAIL to indicate the result.

Note: Take care not to disable the port that you are using. If you do, either re-power the module or use the other remote link to re-enable your link.

2Re-enable the port when it is appropriate. Note: Whenever the module is re-powered, both links will always be enabled.

The module can automatically alter its baud rate to match that of the host computer’s serial port. To do this the other serial parameters must first be correct: 8 data bits, no parity, 1 stop bit and no hardware handshaking. These are usually the default settings, however, if you do need to alter them, open the Windows Device Manager, locate the entry for the COM port to which the module is connected and view the Properties > Port Settings tab. Once set, open a terminal program and send a Return (carriage return) to the Com port to which the module is attached until the message USB Dual Access CAM version 1.00 is returned. The module can now accept commands.

Receiver unit connections

You can connect two AdderView KVM switches, two AdderLink X2 Silver extenders or a mixture of both.

For details about connections at the receiver units, please refer to the guides for those devices.

7

switch

receiver

KVM

6

X200

5

iew

or

AdderV

ONLY

Silver

C

O

3

X2

MP

USE

UT

E

R

C

2

AdderLink

O

INDOOR

IO

1

N

S

TO L

OC

AL

ON

2

1

User arbitration

Control of the host computer is arbitrated by the

module on a first come, first served basis. At the moment that

a key is pressed or a mouse is moved by a user, the keyboard and mouse of the other user are temporarily locked-out (the video images remain). The keyboard indicators of the locked-out user then begin to flash to confirm their status. After two seconds of inactivity from the user currently in control, the module returns to its idle condition and re-instates the keyboard indicators of the locked-out user.

4	3
P
O
WE
R