Details

Extron FOX3 SR 321 MM (part number 60-1777-21) — a multimode fiber receiver that rebuilds mathematically lossless 4K/60 DisplayPort video for a workstation display.

Paired with a FOX3 T 321 transmitter, this receiver recovers video, USB, audio, and control data carried over multimode glass and outputs it as scaled DisplayPort at up to 4096x2160 at 60 Hz with 4:4:4 color. The onboard Vector scaling engine adjusts resolution and chroma automatically to match whatever display is connected, so integrators don't have to hand-configure output timing per room. Because this variant runs in lossless mode over a single fiber, it targets mission-critical CAD, medical imaging, or command-center workstations where pixel-perfect detail matters more than running two fiber strands.

Key Capabilities

Lossless 4096x2160 at 60 Hz, 4:4:4 DisplayPort output over one multimode fiber
Multimode reach to 500 m (1640 ft) on OM4 laser-optimized cable
USB 2.0 extension to 480 Mbps plus dedicated USB HID ports for KVM peripherals
RS-232 and IR insertion for remote source and display control
Analog stereo audio de-embed with a local audio return channel
Front-panel USB configuration port and rear RJ-45 for Ethernet monitoring

Where It Is Used

Fits workstation extension inside a single building or campus wing — engineering labs, control rooms, trading floors, and KVM racks where a DisplayPort source needs to sit hundreds of feet from its display without a copper run's distance limits.

Specifications at a Glance

Video: DisplayPort 1.2a, up to 4096x2160 at 60 Hz, 4:4:4, 21.6 Gbps
Fiber: multimode, 500 m max reach, 2 or 4 LC connectors, 850 nm
USB: 1 USB 2.0 port (500 mA) plus 2-port USB HID
Enclosure: half-rack metal, 1.7"H x 8.75"W x 8.5"D, 2.4 lbs
Power: internal 100-240 VAC supply, 29.1 W consumption

Also referenced as Extron FOX3SR321MM, FOX3-SR-321-MM, part number 60177721.

Specifications

Part Number: 60-1777-21

Manufacturer: Extron

Model: FOX3 SR 321 MM

Condition: New

Video Output Signal: 1 single-link DisplayPort, female DisplayPort Type A

Max. Video Data Rate: 21.6 Gbps (5.4 Gbps per lane)

Max. Pixel Clock: 594 MHz

Max. Resolution: 4096x2160 at 60 Hz, 4:4:4 chroma, up to 10-bit color (lossless over 1 fiber)

Scaled Output Resolutions: 480p through 4096x2160, plus 1 custom mode and bypass

Standards: DisplayPort 1.2a

Audio Output: 1 digital (2-CH PCM de-embedded from DisplayPort) or 1 analog stereo, balanced/unbalanced

Audio Output Connectors: 1 DisplayPort (shared with video), 1 3.5 mm captive screw, 5-pole

Frequency Response: 20 Hz to 20 kHz, ±0.5 dB

S/N Ratio: >90 dB at maximum output, unweighted

THD + Noise: <0.1% at 20 Hz to 20 kHz, nominal level

Audio Output Impedance: 50 ohms unbalanced, 100 ohms balanced

Audio Return Input: 1 analog stereo, balanced/unbalanced, 3.5 mm captive screw, 5-pole

Audio Return Input Impedance: ≥10k ohms unbalanced, ≥20k ohms balanced

Audio Return Nominal Level: +4 dBu (1.23 Vrms), -10 dBV (316 mVrms)

Audio Return Maximum Level: +21 dBu balanced, +15 dBu unbalanced

Fiber Connectors: 2 or 4 LC (1 or 2 SFP modules)

Operating Distance (Multimode): 500 m (1640 feet) with 50 µm OM4 laser-optimized multimode cable

Nominal Peak Wavelength: 850 nm (multimode)

Fiber Data Rate: 10.0 Gbps (1 fiber) or 20.0 Gbps (2 fibers)

Transmission Power (Multimode): -3.3 dBm, typical

Receiver Sensitivity (Multimode): -13.0 dBm, typical

Optical Loss Budget (Multimode): +9.7 dB, maximum

USB Configuration Port: 1 front-panel mini USB B, Ethernet over USB, USB 2.0 low speed

USB Host Ports: 3 USB Type A, female (2 USB HID + 1 USB 2.0), 0 built-in hubs

Available USB Power: USB 2.0 port 500 mA; USB HID ports 100 mA

USB Extension Standards: USB 2.0, USB 1.1, USB 1.0 compatible, up to 480 Mbps

Serial Host Control: 1 RS-232, 3.5 mm captive screw, 5-pole, 9600 baud, 8 data bits, 1 stop bit, no parity

Serial Pass-Through: 1 RS-232, 3.5 mm captive screw, 5-pole, 9600 to 115,200 baud

IR Control Port: 3.5 mm captive screw, 5-pole (shared with RS-232 pass-through), 30-56 kHz modulated

Ethernet Control: 1 RJ-45, 10/100/1000Base-T, default IP 192.168.254.254

Program Control: Extron Product Configuration Software, Extron SIS

Power Supply: Internal, 100-240 VAC, 50-60 Hz

Power Consumption: 29.1 watts

Thermal Dissipation: 75.7 BTU/hr

Ambient Temperature/Humidity: Storage -40 to +158°F (-40 to +70°C), 10-90% noncondensing; Operating +32 to +122°F (0 to +50°C), 10-90% noncondensing

Cooling: Convection

Enclosure: Metal, 1.7" H x 8.75" W x 8.5" D, half rack wide (depth excludes connectors)

Mounting: Rack mount with optional shelf; furniture mount with optional under-desk kit

Product Weight: 2.4 lbs (1.1 kg)

Regulatory Compliance: CE, c-UL, C-tick, FCC Class A, ICES, UL, VCCI; complies with RoHS and WEEE

Product Warranty: 3 years parts and labor

Everlast Power Supply Warranty: 7 years parts and labor

Diagram

Resources

Brochure | FOX3 SR 321 MM 60-1777-21 | FOX3 DisplayPort Extenders

Brochure | FOX3 SR 321 MM 60-1777-21 | Extender DisplayPort FOX3

Brochure | FOX3 SR 321 MM 60-1777-21 | Extendeurs DisplayPort FOX3

Brochure | FOX3 SR 321 MM 60-1777-21 | Extensores FOX3 DisplayPort

Brochure | FOX3 SR 321 MM 60-1777-21 | FOX3 321 和 331 DisplayPort 光纤延长器

Brochure | FOX3 SR 321 MM 60-1777-21 | FOX3-DisplayPort-Extender

Manual | FOX3 SR 321 MM 60-1777-21 | FOX3 Matrix Series Network Ports, Protocols, and Licenses Guide

Manual | FOX3 SR 321 MM 60-1777-21 | FOX3 SR 321/331/211 Setup Guide

Manual | FOX3 SR 321 MM 60-1777-21 | FOX3 SR 321/331/211 User Guide

Specifications | FOX3 SR 321 MM 60-1777-21 | FOX3 SR 321/331

Panel Drawing | FOX3 SR 321 MM 60-1777-21 | FOX3 SR 321

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Extron FOX3 SR 321 MM Fiber Optic Scaling Receiver 60-1777-21

Name: Extron FOX3 SR 321 MM Fiber Optic Scaling Receiver 60-1777-21
Brand: Extron
SKU: EXTRON-FOX3SR321MM-60177721
Availability: InStock

Manufacturer: Extron

Type: Fiber Optics

Extron FOX3 SR 321 MM Fiber Optic Scaling Receiver

• Lossless 4K/60 DisplayPort output at 4:4:4 chroma over one fiber
• Multimode fiber reach to 500 m (1640 ft) on OM4 cable
• USB 2.0 extension to 480 Mbps plus 2-port USB HID for KVM
• RS-232 and IR insertion keep sources and displays controllable at distance
• Analog stereo audio de-embed with a local return channel
• Half-rack 1U enclosure draws 29.1 W, weighs 2.4 lbs
• Ethernet monitoring via RJ-45 for remote system management

Need service or repair? No matter the age, brand, or manufacturer Ampronix can repair it! Free, no charge for initial evaluations!

SKU: EXTRON-FOX3SR321MM-60177721

Details

Extron FOX3 SR 321 MM (part number 60-1777-21) — a multimode fiber receiver that rebuilds mathematically lossless 4K/60 DisplayPort video for a workstation display.

Key Capabilities

Lossless 4096x2160 at 60 Hz, 4:4:4 DisplayPort output over one multimode fiber
Multimode reach to 500 m (1640 ft) on OM4 laser-optimized cable
USB 2.0 extension to 480 Mbps plus dedicated USB HID ports for KVM peripherals
RS-232 and IR insertion for remote source and display control
Analog stereo audio de-embed with a local audio return channel
Front-panel USB configuration port and rear RJ-45 for Ethernet monitoring

Where It Is Used

Specifications at a Glance

Video: DisplayPort 1.2a, up to 4096x2160 at 60 Hz, 4:4:4, 21.6 Gbps
Fiber: multimode, 500 m max reach, 2 or 4 LC connectors, 850 nm
USB: 1 USB 2.0 port (500 mA) plus 2-port USB HID
Enclosure: half-rack metal, 1.7"H x 8.75"W x 8.5"D, 2.4 lbs
Power: internal 100-240 VAC supply, 29.1 W consumption