SC&T VKM02 Manuale utente

Smart Cabling & Transmission Corp. V1.0

VGA/ KVM Extender

User Manual

Model : VKM02

Passive VGA Keyboard Mouse CAT5e Extender - USB Interface

User Manual

VKM02

Introduction

VKM02 is a VGA extender that use 2 CAT5 STP or UTP cable to not only carry VGA signal but also USB one,

with transmission distance up to 100M. it's a perfect solution used in home, shopping malls, classrooms,

and boardrooms… etc.

Features

Resolution up to 1280 x 1024 pixels.

Signal extension up to 100M over a 4 pairs CAT5e STP or UTP cable.

Built-in virtual DDC at TX unit to avoid improper setting for resolution and frequency.

Built-in sync mode selection at TX unit for signal stability.

Built-in sync filter level adjustment at RX unit for signal stability.

Installation View

Panel View

VKM02T (Local unit)

VKM02R (Remote unit)

User Manual

VKM02

Recommend Cable

1. CAT5e UTP/STP or Cat6 UTP cable.

2. There are some certain models or brands of monitors with very high demand at sync-sensitive,

recommend use STP (shielding twisted pair) cable to instead of UTP (unshielded twisted pair)

cable.

RJ45 Pin Configuration

TIA/EIA 568B Wiring standard

Video Link Cable

Data Link Cable

1. Orange-white

Video Red +

1. Orange-white

Keyboard Clock

2. Orange

Video Red -

2. Orange

Keyboard Data

3. Green-white

H-Sync

3. Green-white

Power 1

4. Blue

Video Green +

4. Blue

Ground 1

5. Blue-white

Video Green -

5. Blue-white

Power 2

6. Green

V-Sync

6. Green

Ground 2

7. Brown-white

Video Blue +

7. Brown-white

Mouse Clock

8. Brown

Video Blue –

8. Brown

Mouse Data

Switch Setting

VKM02T Sync Mode Select

←Mode 1

→Mode 2

1. For new type monitors, such like over 17”LCD Monitor, recommends setting at mode 1 for the best

stability. If the picture not normal, then switch to Mode 2.

2. For old type monitors, such like CRT or under 17” LCD Monitor, recommend setting at mode 2. If the

picture still not normal after adjust the dip switch of VKM02R. Then please use STP (shielding

twisted pair) cable.

User Manual

VKM02

DIP Switch Setting

VKM02R Sync Filter Level

↓

Level 0 (Min)

↑

↓

Level 1

↓

↑

↓

Level 2

↓

↑

↓

Level 3

↓

↑

↓

Level 4

↓

↑

Level 5

Sync Filter is designed for using UTP CAT5 cabling.

Sync Filter level adjustment is to add the sync stability, but not adjust picture quality or eliminate skew.

Since different brand monitor have different setting, so there is no recommended setting. Please adjust

the level based on picture stability. If no picture display or picture not stable, then please use STP cable.

Caution

1. The wiring must be away from electromagnetic equipment, i.e., microwave, wireless, high

voltage cable… etc.

2. The maximum distances supported by the VGA Extender are dependent on the type of twisted

pair cable and image resolution of the PC’s VGA interface. Make sure that the maximum

recommended operational distances have not been exceeded.

3. All wiring is “straight-through” twisted pair cable, not being used for other LAN or telephone

equipment.

4. Do not connect the VGA Extender to a telecommunication outlet wired to unrelated equipment.

5. If the keyboard mouse work abnormal, please reverse the cable of keyboard mouse.

User Manual

VKM02

Troubleshooting at picture problem

No picture displays

Check Link cable.

Check DIP switch setting.

Check VGA cable connect.

Change the resolution or frequency.

Change Link cable for STP cable.

Picture not stable or disappear intermittence or no picture display:

Check DIP switch setting.

Change the resolution or frequency.

Wiring away from electromagnetic equipment.

Change Link cable for STP cable.

Picture tilt

Check DIP switch setting.

Change the resolution or frequency.

Change Link cable for STP cable.

User Manual

VKM02

Specification

ITEM NO.

VKM02T

VKM02R

Support

Compliance

TTL

Max. Video Resolution

1280x1024px

Max. Transmission Distance

100M over CAT5/ CAT5e/ CAT6 /STP or UTP Cable

Video Bandwidth

300kHz

Video Insertion Loss

Less than 3dB

Video Return Loss

-15dB

Ports & Interfaces

Video Input

1 x DB15 (75 ohms, 1.1V p-p)

1 x RJ45 (100 ohms)

Video Output

1 x RJ45 (100 ohms)

1 x DB15 (75 ohms, 1.1V p-p)

Data Input

1 x USB Type B

1 x RJ45 (100 ohms)

Data Output

1 x x RJ45 (100 ohms)

2 x PS/2

Setting Switch

1 x 2-position Slide Switch

1 x 5-position DIP Switch

Ambient Temperature

Operation

0 to 55℃

Storage

-20 to 85℃

Humidity

up to 95%

Physical Characteristics

Dimensions

108 x 72.2 x 27mm

Weight

105g

115g

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