Link Electronics 4x1 3G/HD/SD-SDI ASI Switcher

BH #LILEI504 • MFR #LEI-504
Link Electronics
Link Electronics 4x1 3G/HD/SD-SDI ASI Switcher
Special Order
Expected availability: 7-14 business days
$115/mo. suggested payments.*
with 12 Mos. Promo Financing

Important Notice

  • This item is noncancelable and nonreturnable.
Jabari H., B&H Pro Video Expert

True Know-How

Ask Our Experts


Link Electronics LEI-504 Overview

The 4x1 3G/HD/SD-SDI ASI Switcher from Link Electronics is a four-input video switcher that provides a convenient, low-cost way to route high definition and standard definition serial digital signals. This switcher is compatible with 270 Mb/s, 1.5 Gb/s, and 3 Gb/s serial digital interface signals. It can also be used for ASI and SMPTE 310M (19.4 Mb/s) signals, and the reclocking will be automatically be turned off. This switcher automatically equalizes the incoming SDI signal, compensating for greater than 1,000‘ of cable at 270 Mb/s, greater than 250’ of cable at 1.485 Gb/s, and greater than 100’ of cable at 2.97 Gb/s. The signal is then reclocked, with automatic rate detection for all popular data rates. The LEDs on the front panel indicate the data rate of the output video.

This multi-definition SDI 4x1 video switcher is capable of equalizing and reclocking all common serial digital signals, since it supports both standard and high definition signals. This makes it suitable for any application. The switcher’s versatility is illustrated by its ability to switch from SD to HD, SD to 3G, HD to 3G, and vice-versa. Another feature of this switcher is its ability to vertical interval switch when the inputs are synchronous. Vertical interval switching means that the switching takes place in the vertical interval of the video and therefore no glitch is seen in the active area of the video.

The 4x1 3G/HD/SD-SDI Switcher is a 1 RU chassis that is housed in the same case as the well-accepted 700 series. A black front panel distinguishes between the two series. Three 500 or 700 series can be mounted in the PRT-700 rack tray (sold separately).

Supports 3G/HD/SD A&B SDI
Automatic equalization
Automatic reclocking
Vertical interval switching with inputs in sync
Input rates from 270 Mb/s to 3 Gb/s
ASI and SMPTE 310 compatible
Signal locked LED
Passes embedded audio
Rate-detect LEDs

Link Electronics LEI-504 Specs

Serial Digital Interface Input
Number of Inputs4 x SDI
Impedance75 Ohms looping
Data Rates270 Mb/s, 1.48 Gb/s, and 3 Gb/s
SMPTE259 M, 292 M, and 424 M
DC Offset0.5 V Maximuum
Signal Level800 mv ± 10%
Input Cable LengthSD at 270 Mb/s: 1,000.0' (304.8 m)
HD at 1.485 Gb/s: 250.0' (76.2 m)
3G at 2.97 Gb/s: 100.00 (30.48 m)
Serial Digital Interface Output
Number of Outputs1 x SDI
Impedance75 Ohms
FormatFollows input
Signal Level0.800 mVpp ± 10%
DC Offset± 100 mV
Jitter5% Jitter improvement

Additive Jitter:
SD at 270 Mb/s: 16 ps pp, Typical
HD at 1.485 Gb/s: 20 ps pp, Typical
3G at 2.97 Gb/s: 22 ps pp, Typical
Rise / Fall timeHD: 220 ps Maximum
SD: 800 ps Maximum
Front Controls & Indicators(H)
Input SelectionFour momentary switches with LEDs
LockRe-Clocker Locked: Bi-color LED
DetectorsSD Rate Detect: Green LED
HD Rate Detect: Green LED
3G Rate Detect: Green LED
Ambient Temperature32 to 122°F (0 to 50°C)
Humidity0 to 90% Non-condensing
Power5 W
Voltage5 VDC
Adapter Voltage: 100 to 240 VAC, 50 to 60 Hz
Dimensions (HxWxL)1.0 x 5.5 x 9.3" (2.5 x 14.0 x 23.5 cm)
Weight1.5 lb (0.7 kg)
See any errors on this page? Let us know


Browsing History