Digital Signal Conditioning

Although DVI signals are digital in nature, they are subject to loss when transmitted on standard DVI cables, due to the inherent properties of the cable and the connectors. The proper “shape” of the three TMDS channels – also known as the “eye” pattern, as well as their timing to the clock channel, are critical in ensuring proper DVI image display. Losses in these channels will result in “sparkles” on-screen, or a complete loss of the im- age. They are attributable to long cable lengths, poor quality cables and terminations, and even certain source devices which output substandard DVI signals.

The DVI 201xi Tx features Automatic Input Equalization, which actively conditions incoming DVI signals, applying equalization to help reshape and restore TMDS channels to proper levels. The clock channel is also regenerated to provide proper TMDS channel alignment. As shown below, a compromised source-generated DVI signal is significantly improved when passed through the DVI 201xi Tx and subsequently transmitted to a DVI 201 Rx Twisted Pair Receiver. Automatic Input Equalization reshapes and restores the “eye” patterns to ensure high quality images at the display.

Without Automatic Input Equalization

With Automatic Input Equalization

Direct DVI output from a source device at 1600 x1200. Signal quality is poor, and the "eye" pattern is significantly distorted.

The same DVI output is transmitted 100 ft (30 m) over CAT 5 cable using the DVI 201xi Tx and DVI 201 Rx. The "eye" pattern is fully restored.

specifications

Video

Maximum data rate

.10 Gbps (3.3 Gbps per color)

Maximum pixel clock

.165 MHz

Resolution range

.Up to 1920x1200 @ 60 Hz

Formats

.RGB and YCbCr digital video

Standards

.DVI 1.0, HDMI 1.2

Video input and loop through — transmitter

Number/signal type

.1 single link DVI-D input

Connectors

1 single link DVI-D local loop-through

.2 DVI-I female (1 for input, 1 for loop-through)

Interconnection between transmitter and receiver

Connectors

.(2) RJ-45 per unit for 2 CAT 5/5e/6/7 UTP or STP

 

(shielded twisted pair) cables connecting the

Signal transmission distance

transmitter and receiver

 

1080p or 1900x1200 @ 60 Hz

 

CAT 5/5e/6/7 STP

 

(shielded twisted pair) cable

.Up to 125' (38 m)

CAT 5/5e/6 UTP cable

.100' (30 m)

NOTE: The transmission distance varies greatly depending on the signal resolution and on the type of cable, graphics card, and display used in the system.

Control/remote — external device (pass-through)

Serial control port input

.RS-232 via (1) 3.5 mm, 3 pole captive screw

 

connector

General

External power supply

.100 VAC to 240 VAC, 50-60 Hz, 6 W max.,

Power input requirements

external; to 12 VDC, 2 A, regulated

 

.12 VDC, 0.4 A for both transmitter and receiver

Temperature/humidity

.Storage: -40 to +158˚F (-40 to +70˚C) / 10% to

 

 

90%, noncondensing

 

 

 

Operating: +32 to +122˚F (0 to +50˚C) / 10% to

Cooling

90%, noncondensing

 

.Convection, no vents

 

Mounting

 

 

 

Rack mount

.Yes, with optional 1U, rack shelf

 

Enclosure type

.Metal

 

Enclosure dimensions

.1.75" H x 8.75" W x 3.0" D (1U high, half rack

 

 

wide)

 

 

 

(4.4 cm H x 22.2 cm W x 7.6 cm D)

Product weight

(Depth excludes connectors.)

 

.0.6 lbs (0.3 kg)

 

Shipping weight

.2 lbs (1 kg)

 

Vibration

.ISTA 1A in carton (International Safe Transit

Regulatory compliance

Association)

 

 

 

Safety

.CE, CUL, UL

 

EMI/EMC

.CE, C-tick, FCC Class A**, ICES, VCCI

MTBF

.30,000 hours

 

Warranty

.3 years parts and labor

 

NOTE: **FCC testing is conducted with STP (shielded twisted pair) cable.

 

NOTE: All nominal levels are at ±10%.

 

 

Model

Version Description

Part number

DVI 201xi Tx

DVI Twisted Pair Transmitter

60-1013-12

DVI 201 Rx

Receiver

60-734-13

DVI 201 A D Rx

Receiver - Black

60-865-22

DVI 201 A D Rx

Receiver - White

60-865-23

Specifications are subject to change without notice.

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Extron electronic DVI 201xi Tx manual Digital Signal Conditioning, Specifications