Network Technologies PS/2 KVM RS232 Connections and Configuration, Remote Connection, Baud Rate

Page 22

NTI KEEMUX Series PS/2 KVM Switch

RS232 CONTROL

 

 

 

 

 

 

 

 

 

(Optional)

Rear View of KEEMUX-P4-RS

 

 

 

RS232 Connections and Configuration

 

O

 

O

O

O

 

O

RS232

 

 

 

OFF

 

 

V

 

V

V

V

 

M

 

 

 

I

 

I

I

I

 

O

 

 

 

D

 

D

D

D

 

N

 

 

 

 

 

I

 

 

 

E

 

E

E

E

 

 

 

 

 

 

 

 

 

 

T

 

 

 

4

 

3

2

1

 

R

1 2 3 4 5 6 7 8

 

 

 

 

ON

2A

NTI

R

U

U

U

 

U

Mouse

 

 

 

C

C

C

 

C

Keyboard

 

5VDC

 

 

P

P

P

 

P

 

 

 

 

Daisy

Daisy

- +

1275 Danner Dr

 

4

3

2

 

1

Out

In

Aurora, OH 44202

 

 

 

 

www.nti1.com

 

 

 

 

 

 

 

 

 

Tel:330-562-7070

 

 

 

 

 

 

 

 

 

Fax:330-562-1999

CPU 4

 

CPU 3

CPU 2

CPU 1

PS/2 DEVICES

 

 

 

 

 

Remote Connection

The RS232 Interface (optional) is designed to meet the RS232C standard and can be controlled from any CPU or other controller with an RS232 communications port. The pin-out for the DB-9 connector(s) on the unit is as follows:

RS232 CONNECTOR (DB-9 FEMALE)

PIN

SIGNAL

FUNCTION

1

CD

Carrier Detect

 

 

 

2

TXD

Transmit data (RXD at host)

 

 

 

3

RXD

Receive data (TXD at host)

 

 

 

4

DTR

Data terminal ready

 

 

 

5

GND

Signal ground

 

 

 

6

DSR

Data set ready

 

 

 

7

RTS

Request to send

 

 

 

8

CTS

Clear to send

 

 

 

9

-

No connection

 

 

 

Note: Security must be disabled or user access granted on the port(s) to be selected by RS-232 control.

On the DB-9 female connector, pins 1 (DCD), 4 (DTR), and 6 (DSR) are shorted and pins 7 (RTS) and 8 (CTS) are shorted. Therefore, host handshaking is bypassed and TXD and RXD are the only active signals. A straight-through DB-9 serial cable (not null modem- see specifications on page 26) will work for most CPUs. To daisy chain multiple units, a Matrix Y-1 cable is used (see page 19) for each KEEMUX in the chain. The last unit in the chain should have DIP switch 1 ON (see table under "Unit Address and Loop Back" on page 19).

Baud Rate

The baud rate can be changed by powering down the unit, changing the 8 position RS232 dip switch on the rear of the KEEMUX, and then powering back up. This table shows how to set the baud rate.

 

DIP SWITCH

BAUD RATE

4

 

3

2

 

OFF

 

OFF

OFF

300

OFF

 

OFF

ON

600

OFF

 

ON

OFF

1200

OFF

 

ON

ON

2400

ON

 

OFF

ON

9600

ON

 

ON

OFF

ON

 

ON

ON

 

OFF

1 2 3 4 5 6 7 8 ON

18

Page 21 Page 23
Image 22
Page 21 Page 23
Contents KEEMUX-Px Trademark Table of Contents Table of Figures Available Options IntroductionMaterials LimitationsFeatures and Functions Prepare To Connect InstallationMake Connections AT Style Connector Rear View of KEEMUX-P8Cascading Power UpLimitations Configuration Cascaded InstallationUsing the NTI Keemux PS/2 KVM Switch Front Panel ControlKeyboard Control Basic Command ModeCommand Functions Keystroke Increment Port Keyboard PressBroadcast Mode Scan ModeNormal Mode OSD Control Enabling the Security FeatureUser Login Mode Security OptionAdministrator Password Administration ModeAdditional Modes Available With Security Tab Esc System Access ListUser Name List Keystroke Ctrl EscOSD Command Mode User Access FunctionsKeystroke Ctrl + S Ctrl + B Ctrl + E Ctrl + M OSD Command Mode Contd FunctionKeystroke Press Ctrl for more functionsEdit Mode Erase previous characterMaintenance Mode Search ModeEsc Enter Maintenance Mode Cont’d FunctionKeystroke Help ModeActivate security features Remote Connection RS232 Connections and ConfigurationBaud Rate RS232 Matrix-Y-1 CPU Serial Port Unit Address and Loop BackFirst Unit Second Unit Last Unit Command Protocol Format RS AacrSerTest- RS232 Interface Test Program NTI Switch Control Program For Windows 9X, NT, 2000 And XPMain Options Keyboard Mapping Ethernet Operations not applicable to this modelHOW to Disable Operating Modes For models KEEMUX-Pxin a plastic caseConfiguring The Jumper Block Clear the jumper block for configuration accessAudio Support Dual Video SupportTroubleshooting Specifications for STRAIGHT-THROUGH RS232 Serial CableWarranty Information

PS/2 KVM specifications

Network Technologies PS/2 KVM switches are essential devices that enable users to control multiple computers from a single set of keyboard, video, and mouse (KVM) peripherals. These devices are particularly advantageous in server rooms, data centers, and environments where space-saving is crucial, as they streamline the management and minimize the clutter of multiple keyboards and monitors.

A key feature of PS/2 KVM switches is their compatibility with the PS/2 interface, which has been a standard for connecting keyboards and mice for many years. This ensures reliable communication and seamless performance when managing various systems. The switch typically supports a wide range of resolutions, allowing users to connect to different video outputs without sacrificing image quality. Most PS/2 KVM setups can handle resolutions up to 1920x1200, making them suitable for high-definition applications.

One of the primary technologies utilized in PS/2 KVM switches is multi-platform support. This allows users to connect and control computers running different operating systems simultaneously, including Windows, Linux, and UNIX. This versatility is essential in environments with varied system requirements and contributes to improved operational efficiency.

In terms of scalability, many PS/2 KVM switches support daisy chaining and cascading, enabling the connection of multiple switches for managing even larger numbers of servers. This is particularly helpful for administrators who need to manage extensive infrastructures without the hassle of additional hardware.

PS/2 KVM switches also come with features such as hotkey switching, which allows users to switch between computers using keyboard shortcuts. This functionality enhances workflow efficiency, as users can quickly access different systems without the need for manual intervention. Additionally, they often include LED indicators that simplify status monitoring, ensuring users are aware of which systems are currently active.

Security is another critical aspect. Many PS/2 KVM switches offer the option to implement password protection and encryption protocols, safeguarding sensitive data during operations.

In summary, Network Technologies PS/2 KVM switches provide a robust and effective solution for managing multiple computers in various settings. Their combination of compatibility, resolution support, scalability, and security features makes them a valuable asset for IT professionals looking to enhance productivity and streamline operations.
Top Page Image Contents