Sprolink SG-UHD Professional 4K UHD Signal Generator

The Sprolink SG-UHD is a professional-grade signal generator built for broadcast engineers, systems integrators, and AV technicians who need a reliable source for testing and commissioning video infrastructure. It outputs 4K UHD and Full HD signals simultaneously across HDMI 2.0, dual 3G-SDI, and optical fiber (SFP) interfaces, covering the full range of formats in use across modern broadcast and production facilities.

The unit features a 4.3-inch color display for at-a-glance status monitoring and front-panel controls for direct access to pattern selection, timing, audio, and system settings without requiring a PC. Signal formats span HDMI 2.0 resolutions up to 3840x2160 (4K UHD) and 4096x2160 (DCI-4K) at refresh rates through 240Hz, as well as HD-SDI and 3G-SDI Level A and Level B-DL/B-DS up to 2048x1080. A rich set of test patterns includes SMPTE color bars, grey bars, ramp, window, EQ/PLL test, and user-importable custom images.

Embedded audio is handled independently for each output path, supporting up to 16 channels of AES/EBU audio per SDI channel and up to 8 channels on HDMI, with adjustable level (-60dB to 0dB), frequency (20-20000Hz), and phase (0, 90, 180, 270 degrees). Auxiliary functions include LTC/VITC timecode insertion, image overlay (frame count, circle, border, center cross), and a scrollable image traverse function with configurable step size. The robust metal chassis accepts DC 12V or USB Type-C (5V) power for flexible use in rack rooms and field deployments alike.

Key Features

• Multi-Format 4K and HD Outputs: Simultaneous HDMI 2.0 (up to 4K UHD / DCI-4K), dual 3G-SDI (up to 2048x1080, Level A and Level B), and SFP optical fiber output from a single compact unit.
• Comprehensive Test Pattern Library: Generates SMPTE 100%/75% color bars, grey bars, ramp, window, EQ Test/PLL test, and custom user-imported images for thorough display and link verification.
• 16-Channel Embedded Audio with Full Control: Supports up to 16 AES/EBU audio channels per SDI output and 8 channels on HDMI; adjustable level, frequency, and phase offset for complete audio path testing.
• Auxiliary Overlay and Timecode Functions: Inserts LTC and VITC timecode; overlays frame counters, border lines, and crosshair markers; supports 4-direction image scroll with adjustable step size for precision alignment checks.
• 4.3-Inch Display with FPGA-Powered Control: Built-in color screen and front-panel buttons provide direct access to all settings; FPGA-based processing ensures stable, long-term performance suited to demanding production and broadcast environments.

Technical Specifications

• Video Outputs: 3G-SDI x2 (BNC), SFP Optical Fiber x1, HDMI 2.0 x1
• HDMI 2.0 Resolutions (VESA): 1024x768, 1280x1024, 1920x1080, 2560x1440 (QHD), 3840x2160 (4K UHD) at 60/75/120/144/165/240Hz
• HDMI 2.0 Resolutions (CEA-861): 480p, 720p, 1080i/p, 2160p (4K UHD), 4096x2160 (DCI-4K) at 24/25/30/50/60/120Hz; sampling RGB / YCbCr 4:4:4 / 4:2:2 / 4:2:0, 8-10bit
• 3G-SDI Formats: SD-SDI (525/625), HD-SDI (720p, 1080i/p), 3G-SDI Level A and Level B-DL/B-DS up to 2048x1080; YCbCr 4:2:2 10bit, GBR/GBRA 4:4:4 10-12bit
• Test Patterns: Color Bar 100%/75%/SMPTEEG1-1990, Grey Bars, EQ Test/PLL Test, Ramp, Window, Custom Value, Picture (user import)
• Embedded Audio: Up to 16-channel SDI AES/EBU and 8-channel HDMI; level -60dB to 0dB; frequency 20-20000Hz; phase offset 0/90/180/270 degrees; 3.5mm stereo audio output
• Timecode and Overlay: LTC / VITC timecode; graphic overlay (frame count, circle, border, center cross); 4-direction image traverse with configurable step size
• Display: 4.3-inch built-in color screen
• Power Supply: DC 12V or 5V via USB Type-C
• Dimensions (L x W x H): 135.2 x 117.2 x 35.6mm (5.3 x 4.6 x 1.4 in)
• Unit Weight: 310g (0.68 lbs); shipping weight listed separately in assumptions
• Operating Temperature: 0 degrees C to 50 degrees C; Storage: -30 degrees C to 70 degrees C
• Chassis: Robust metal construction for durability and heat dissipation