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Kramer Matrix™

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86 matching items were found.

Name Inputs Outputs Size Audio Features
Distribution Amplifiers
6104

1:4 SDI Distribution Amplifier

1 SDI

4 SDI

DigiTOOLS® N/A
  • Multi-Standard
  • Reclocking & Equalization - Automatic
  • Resolution - 8 & 10-bit (Automatic)
SD-7108

1:8 SDI Distribution Amplifier

1 SDI

8 SDI

19” (1U) N/A
  • Multi-Standard
  • Resolution - 8 & 10-bit (Automatic)
  • Parallel ECL Output on DB-25
VM-10HD

1:10 HD-SDI Video Distribution Amplifier

1 HD-SDI

10 HD-SDI

19” (1U) N/A
  • Max Data Rate - 1.485Gbp
  • SDI & HD-SDI
  • re-Klocking & Equalization
VM-10HDxl

1:10 3G HD-SDI Distribution Amplifier

1 HD-SDI

10 HD-SDI

19” (1U) N/A
  • Max Data Rate -3Gbps
  • SDI, HD-SDI & 3G HD-SDI
  • Looping Input
VM-20HD

1:10 Dual Link HD-SDI Distribution Amplifier

Multi-Mode

- 1 HD-SDI

- 2:1 HD-SDI

- 1 Dual-Link

Multi-Mode

- 20 HD-SDI

- 10 HD-SDI

- 10 Dual-Link

19” (1U) N/A
  • Max Data Rate - 1.485 Gbps
  • SDI, HD-SDI & Dual Link HD-SDI
  • 1:20 or (2) 1:10 or (1) Dual Link 1:10
  • Looping Inputs
  • re-Klocking & Equalization
VM-22HD

Dual-Mode 1:2 HD-SDI Distribution Amplifier

Dual-Mode

- 1 Dual-Link

Dual-Mode

- 2 Dual-Link

DigiTOOLS® N/A
  • Max Data Rate - 1.485 Gbps
  • SDI, HD-SDI & Dual Link HD-SDI
  • Dual-Mode - Two 1:2 or one dual link 1:2 DA
  • HD-SDI & SDI Input Indication LEDs.
VM-24HD

Dual-Mode 1:4 HD-SDI Distribution Amplifier

Dual-Mode

- 1 Dual-Link

Dual-Mode

- 4 Dual-Link

MegaTOOLS™ N/A
  • Max Data Rate - 1.485 Gbps
  • SDI, HD-SDI & Dual Link HD-SDI
  • Dual-Mode - Two 1:4 or one dual link 1:4 DA
  • HD-SDI & SDI Input Indication LEDs.
VM-2HD

1:2 HD-SDI Video Distribution Amplifier

1 HD-SDI

2 HD-SDI

Pico TOOLS™ N/A
  • Max Data Rate - 1.485Gbp
  • SDI & HD-SDI
  • re-Klocking & Equalization
VM-2HDxl

1:2 3G HD-SDI Distribution Amplifier

1 HD-SDI

2 HD-SDI

Pico TOOLS™ N/A
  • Max Data Rate - 3Gbps
  • SDI, HD-SDI & 3G HD-SDI
  • Re-Klocking & Equalization
VM-4HD

1:4 HD-SDI Video Distribution Amplifier

1 HD-SDI

4 HD-SDI

DigiTOOLS® N/A
  • Max Data Rate - 1.485Gbp
  • SDI & HD-SDI
  • re-Klocking & Equalization
VM-4HDxl

1:4 3G HD-SDI Video Distribution Amplifier

1 HD-SDI

4 HD-SDI

DigiTOOLS® N/A
  • Max Data Rate - 3Gbps.
  • SDI, HD-SDI & 3G HD-SDI
  • Re-Klocking & Equalization
Switchers & Routers
6241

4x1:2 SDI Video Switcher

4 SDI

1:2 SDI

DigiTOOLS® N/A
  • Multi-Standard - Up to 270 Mbps
  • Reclocking & Equalization
  • Resolution - 8 & 10-bit
SD-7588V

8x8 SDI Video Matrix Switcher

8 SDI

8 SDI

19” (1U) N/A
  • Max Data Rate - 270 Mbps
  • Genlock Input
  • Control - RS-232 & RS-485
VS-1616SDI

16x16 SDI Video Matrix Switcher

16 SDI

16 SDI

19” (2U) N/A
  • Max Data Rate - 270Mbps
  • Genlock Input
  • Control - RS-232, RS-485, Contact Closure & IR
VS-211HDxl

2x1:2 3G HD-SDI Automatic Standby Switcher

2 HD-SDI

1:2 HD-SDI

DigiTOOLS® N/A
  • Max Data Rate - 3Gbps
  • SDI, HD-SDI & 3G HD-SDI
  • Contact Closure or automatic switching
VS-41HD

4x1:2 HD-SDI Switcher

4 HD-SDI

1:2 HD-SDI

19” (1U) N/A
  • Data Rate - 1.485 Gbps
  • Control - RS-232, RS-485, Ethernet, contact closure & IR Remote
VS-44HD

4x4 HD-SDI Matrix Switcher

4 HD-SDI

4 HD-SDI

19” (1U) N/A
  • Max Data Rate - 1.485 Gbps
  • Control - RS-232, RS-485, Contact Closure, Ethernet & IR
VS-44HDxl

4x4 3G HD-SDI Matrix Switcher

4 HD-SDI

4 HD-SDI

19” (1U) N/A
  • Max Data Rate - Up to 3 Gbps
  • Control - RS-232, RS-485, Contact Closure, Ethernet & IR
VS-48HDxl

4x8 3G HD-SDI Matrix Switcher

4 HD-SDI

8 HD-SDI

19” (1U) N/A
  • Max Data Rate - Up to 3 Gbps
  • Looping Analog Sync
  • Control - RS-232, RS-485, Contact Closure, Ethernet & IR
VS-81HD

8x1:2 HD-SDI Switcher

8 HD-SDI

1:2 HD-SDI

19” (1U) N/A
  • Data Rate - 1.485 Gbps
  • Control - RS-232, RS-485, Ethernet, contact closure & IR Remote
VS-81HDxl

8x1:2 3G HD-SDI Switcher

8 HD-SDI

1:2 HD-SDI

19” (1U) N/A
  • Max Data Rate - 3 Gbps
  • Control - RS-232, RS-485, Ethernet, contact closure & IR Remote
VS-88HD

8x8 HD-SDI Matrix Switcher

8 HD-SDI

8 HD-SDI

19” (1U) N/A
  • Max Data Rate - Up to 1.485Gbps
  • Looping Analog Sync Input
  • Control - RS-232 & RS-485
Format & Standards Converters
6808

SDI Audio De-Embedder

1 SDI

2 AES-3id

TOOLS D
  • Input - SDI with Embedded Audio
  • Output - 2 3id
  • Looping Input - Reclocked
New
6808HDxl

3G HD-SDI AES De-Embedder

1 HD-SDI

2 AES-3id

DigiTOOLS® D
  • Max Data Rate - 3Gbps
  • Looping Input
6809

SDI Audio Embedder

1 AES-3id

1 SDI

1 SDI

TOOLS D
  • Inputs - SDI & 2 AES/EBU
  • Outputs - SDI with Embedded Audio
6809HD

HD-SDI & SDI Audio Embedder

2 AES-3id

1 HD-SDI

1 HD-SDI

DigiTOOLS® D
  • No Format or Resolution Conversion
  • Kramer re-Klocking™ & Equalization Technology
  • Select which 2 of 4 audio channels to embed audio.
  • Audio, SDI & HD-SDI input status LEDs.
6810HDxl

3G HD-SDI Audio Embedder & De-embedder

1 HD-SDI

4 AES-3id

1 HD-SDI

4 AES-3id

Desktop D
  • Max Data Rate - 3Gbps
  • Embed/De-Embed AES-3id Audio
7408

SDI to Multi-Format Analog Video Format Converter & Processor

1 SDI

1 CV

1 Y/C

1 YUV

DigiTOOLS® N/A
  • Bandwidth - 5.7MHz (-3dB)
  • Multi-Standard - PAL & NTSC
  • Proc-Amp Control
  • Looping Input
7508

Multi-Standard Composite Video & s-Video to SDI Format Converter

1 CV

1 Y/C

2 SDI

DigiTOOLS® N/A
  • Bandwidth - 5MHz (-0.2dB)
  • SDI Outputs - Reclocked
  • Multi-Standard - PAL, SECAM & NTSC
  • Proc-Amp Control
  • Control - RS-232
New
FC-113

HDMI to 3G HD-SDI Format Converter

1 HDMI

2 HD-SDI

DigiTOOLS® E
  • Max Data Rate - 3Gbps
  • No Frame Rate or Resolution Conversion
New
FC-321

2x1 3G HD-SDI to HDMI Format Converter

2 HD-SDI

1 HDMI

Desktop E
  • Max Data Rate - 3Gbps
New
FC-322

2x1:2 3G HD-SDI to HDMI Format Converter

2 HD-SDI

2 HDMI

DigiTOOLS® E
  • Max Data Rate - 3Gbps
FC-331

3G HD-SDI to HDMI Format Converter

1 HD-SDI

1 HDMI

DigiTOOLS® E
  • Max Data Rate - 3Gbps
  • Looping Input
FC-332

3G HD-SDI to HDMI Format Converter

1 HD-SDI

2 HDMI

TOOLS E
  • Max Data rate - 3Gbps
  • Looping Input
FC-4001

MultiCoder® Universal Analog & Digital Format Video Transcoder & TBC

1 CV

1 Y/C

1 RGB/S

1 SDI

1 CV

1 Y/C

1 RGB/S

2 SDI

19” (1U) N/A
  • Bandwidth - 5MHz (-0.5dB)
  • TBC
  • Looping Sync
  • Multi-Standard - PAL, SECAM & NTSC
  • Control - RS-232
  • Genlock Input
FC-41

HD-SDI to Component HD Format Converter/HD-Component Test Pattern Generator

1 HD-SDI

1 YUV/HD

1 RGB/HV

2 HD-SDI

19” (1U) N/A
  • HD Resolutions - Up to 1080p
  • Sync Input - Bi-level & tri-level.
  • No Resolution Conversion.
  • ProcAmp Control
  • Test Pattern Generator
  • Control - RS-232
FC-42

Component HD to HD-SDI Format Converter & Test Pattern Generator

1 YUV/HD

2 HD-SDI

1 RGB/HV

19” (1U) N/A
  • HD Resolutions - Up to 1080p
  • Sync Input - Bi-level & tri-level
  • No Resolution Conversion
  • ProcAmp Control
  • Test Pattern Generator
  • Control - RS-232
FC-7402

SDI to Multi-Format Analog Video Format Converter & Processor

1 SDI

1 CV

1 Y/C

1 YUV

19” (1U) N/A
  • Bandwidth - 5.7MHz (-3dB)
  • Multi-Standard - PAL, SECAM & NTSC
  • RGB or YUV Colorspace
  • ProcAmp Control
  • Looping Input
FC-7501

Multi-Standard Composite Video, s-Video & Component Video to SDI Format Converter

Universal

- 1 CV

- 1 Y/C

- 1 YUV

2 SDI

Desktop N/A
  • Bandwidth - 6MHz (-3dB)
  • Multi-Standard - PAL, SECAM & NTSC
  • Looping Input
  • ProcAmp Control
  • Control - RS-232
  • Rack Kit - RK-1
FC-7501M

Analog Video to SDI Converter Upgrade Module

Desktop
FC-7501P

Analog Video to SDI Reference Converter

Desktop
SP-11D

Multi-Format Analog & Digital Video Processor/ProcAmp/TBC/Format & Standards Converter

1 CV

1 Y/C

1 RGB/S

1 SDI

1 CV

1 Y/C

1 RGB/HV

2 SDI

19” (1U) N/A
  • Video Processor
  • Format Converter
  • ProcAmp Control
  • TBC
  • Standards Converter
  • Genlock Input
  • Split-Screen
  • Control - RS-232
Range Extenders & Repeaters
New
673R

4-Channel 3G HD-SDI Over Fiber Optic Receiver

1 SC Optical

4 HD-SDI

DigiTOOLS® N/A
  • Max Data Rate - 3Gbps
New
673T

4-Channel 3G HD-SDI Over Fiber Optic Transmitter

4 HD-SDI

1 SC Optical

DigiTOOLS® N/A
  • Max Data Rate - 3Gbps
Specialty AV Products
811

Video Test Pattern & Audio Tone Generator

N/A

1 CV

1 Y/C

1 YUV

1 SDI

6 Blackburst

1 Audio

Desktop B
  • PAL or NTSC Output
  • 74 Test Patterns
  • Rack Kit - RK-1
820

SDI Color Bar Generator

N/A

4 SDI

TOOLS N/A
  • Video Output - Color Bar
SG-6006

Multi-Standard Composite/SDI Video Black Burst, Color Bar & Audio Tone Generator

1 Sync

8 CV

4 SDI

19” (1U) B/U/D
  • 8 Color Bar Patterns
  • Color Bar or Black Burst - Each output
  • SCH / Phase Adjust
  • Looping Analog Genlock Input
  • Audio Outputs - 2 XLR, 2 RCA , AES-3ID & AES/EBU
  • Control - RS-232
Sierra Video
New
128128HD-128

128x128 3G HD-SDI Matrix Switcher

128 HD-SDI

128 HD-SDI

19” (8U) E
  • Sierra Ponderosa Family
  • Max Data Rate - 3Gbps
  • Configure from 8x8 to 128x128
  • Module Size - 8 Inputs or 8 Outputs
  • Control - RS-232, RS-422, RS-485 & Ethernet
1601HD

16x1:2 HD-SDI Switcher

16 HD-SDI

1:2 HD-SDI

19” (1U) N/A
  • Shasta HD Series
  • Max Data Rate - 1.485Gbps
  • Control - RS-232, RS-485 & Ethernet
1601HDS

16x1:2 HD-SDI Switcher with Balanced Stereo Audio

16 HD-SDI

1:2 HD-SDI

19” (1U) B
  • Shasta HD Series
  • Max Data Rate - 1.485Gbps
  • Control - RS-232, RS-485 & Ethernet
  • Digital Volume Control
1602HD

16x2 HD-SDI Matrix Switcher

16 HD-SDI

2 HD-SDI

19” (1U) N/A
  • Shasta HD Series
  • Max Data Rate - 1.485Gbps
  • Control - RS-232, RS-485 & Ethernet
1602HDE

16x2 HD-SDI Matrix Switcher with 1 Channel UnBalanced AES Audio

16 HD-SDI

2 HD-SDI

19” (1U) D
  • Shasta HD Series
  • Max Data Rate - 1.485Gbps
  • Control - RS-232, RS-485, & Ethernet
1602HDEE

16x2 HD-SDI Matrix Switcher with 2 Channels AES Audio

16 HD-SDI

2 HD-SDI

19” (1U) D
  • Shasta HD Series
  • Max Data Rate - 1.485Gbps
  • Control - RS-232, RS-485 & Ethernet
1602HDS

16x2 Monitoring Switcher with Balanced Stereo Audio

16 HD-SDI

2 HD-SDI

19” (1U) B
  • Shasta HD Series
  • Max Data Rate - 1.485Gbps
  • Control - RS-232, RS-485, & Ethernet
  • Digital Volume Control
1608HD

16x8 HD-SDI Matrix Switcher

16 HD-SDI

8 HD-SDI

19” (2U) N/A
  • Sierra Video Lassen Series
  • Accepts SDI Inputs
  • Max Data Rate - 1.485Gbps
  • Control - RS-232, RS-485, & Ethernet
1608HDS

16x8 HD-SDI Matrix Switcher With Balanced Stereo Audio

16 HD-SDI

8 HD-SDI

19” (2U) B
  • Lassen HD Series
  • Accepts SDI Inputs
  • Max Data Rate - 1.485Gbps
  • Control - RS-232, RS-485, & Ethernet
  • Digital Volume Control
1616D

16x16 SDI Matrix Switcher

16 SDI

16 SDI

19” (2U) N/A
  • Lassen SDI Series
  • Max Data Rate - 360Mbps
  • Control - RS-232, RS-485, & Ethernet
1616DEE

16x16 SDI Matrix Switcher With AES Audio

16 SDI

16 SDI

19” (2U) D
  • Lassen SDI Series
  • Max Data Rate - 360Mbps
  • Control - RS-232, RS-485, & Ethernet
  • 2 AES/EBU Audio Channels
1616DS

16x16 SDI Matrix Switcher With Balanced Stereo Audio

16 SDI

16 SDI

19” (2U) B
  • Lassen SDI Series
  • Max Data Rate - 360Mbps
  • Control - RS-232, RS-485, & Ethernet
  • Digital Volume Control
1616HD

16x16 HD-SDI Matrix Switcher

16 HD-SDI

16 HD-SDI

19” (2U) N/A
  • Lassen HD Series
  • Accepts SDI Inputs
  • Max Data Rate - 1.485Gbps
  • Control - RS-232, RS-485, & Ethernet
1616HDEE

16x16 HD-SDI Matrix Switcher With AES Audio

16 HD-SDI

16 HD-SDI

19” (2U) D
  • Lassen HD Series
  • Accepts SDI Inputs
  • Max Data Rate - 1.485Gbps
  • Control - RS-232, RS-485, & Ethernet
  • 2 AES/EBU Audio Channels
1616HDS

16x16 HD-SDI Matrix Switcher with Balanced Stereo Audio

16 HD-SDI

16 HD-SDI

19” (2U) B
  • Lassen HD Series
  • Accepts SDI Inputs
  • Max Data Rate - 1.485Gbps
  • Control - RS-232, RS-485, & Ethernet
  • Digital Volume Control
3216HD

HD-SDI and SDI video.

32 HD-SDI

16 HD-SDI

19” (3U) N/A
  • Lassen HD Series
  • Accepts SDI Inputs
  • Max Data Rate - 1.485Gbps
  • Control - RS-232, RS-485, & Ethernet
3216HDEE

HD-SDI and SDI video with 2 channels of AES audio.

32 HD-SDI

16 HD-SDI

19” (3U) D
  • Lassen HD Series
  • Accepts SDI Inputs
  • Max Data Rate - 1.485Gbps
  • Control - RS-232, RS-485, & Ethernet
  • 2 AES/EBU Audio Channels
3216HDS

HD-SDI and SDI video with stereo audio.

32 HD-SDI

16 HD-SDI

19” (3U) B
  • Lassen HD Series
  • Accepts SDI Inputs
  • Max Data Rate - 1.485Gbps
  • Control - RS-232, RS-485, & Ethernet
  • Digital Volume Control
3232D

32x32 SDI Matrix Switcher

32 SDI

32 SDI

19” (3U) N/A
  • Lassen SDI Series
  • Max Data Rate - 360Mbps
  • Control - RS-232, RS-485, & Ethernet
3232DEE

32x32 SDI Matrix Switcher With AES Audio

32 SDI

32 SDI

19” (3U) D
  • Lassen SDI Series
  • Max Data Rate - 360Mbps
  • Control - RS-232, RS-485, & Ethernet
  • 2 AES/EBU Audio Channels
3232DS

32x32 SDI Matrix Switcher with Balanced Stereo Audiio

32 SDI

32 SDI

19” (3U) B
  • Lassen SDI Series
  • Max Data Rate - 360Mbps
  • Control - RS-232, RS-485, & Ethernet
  • Digital Volume Control
3232HD

HD-SDI and SDI video.

32 HD-SDI

32 HD-SDI

19” (3U) N/A
  • Lassen HD Series
  • Accepts SDI Inputs
  • Max Data Rate - 1.485Gbps
  • Control - RS-232, RS-485, & Ethernet
New
3232HD-128

32x32 3G HD-SDI Matrix Switcher

32 HD-SDI

32 HD-SDI

19” (8U) E
  • Sierra Ponderosa Family
  • Max Data Rate - 3Gbps
  • Configure from 8x8 to 128x128
  • Module Size - 8 Inputs or 8 Outputs
  • Control - RS-232, RS-422, RS-485 & Ethernet
New
3232HD-64

32x32 3G HD-SDI Matrix Switcher

32 HD-SDI

32 HD-SDI

19” (4U) E
  • Sierra Ponderosa Family
  • Max Data Rate - 3Gbps
  • Configure from 8x8 to 64x64
  • Module Size - 8 Inputs or 8 Outputs
  • Control - RS-232, RS-422, RS-485 & Ethernet
3232HDEE

HD-SDI and SDI video with 2 channels of AES audio.

32 HD-SDI

32 HD-SDI

19” (3U) D
  • Lassen HD Series
  • Accepts SDI Inputs
  • Max Data Rate - 1.485Gbps
  • Control - RS-232, RS-485, & Ethernet
  • 2 AES/EBU Audio Channels
3232HDS

HD-SDI and SDI video with Stereo Audio.

32 HD-SDI

32 HD-SDI

19” (3U) B
  • Lassen HD Series
  • Accepts SDI Inputs
  • Max Data Rate - 1.485Gbps
  • Control - RS-232, RS-485, & Ethernet
  • Digital Volume Control
New
6464HD-128

64x64 3G HD-SDI Matrix Switcher

64 HD-SDI

64 HD-SDI

19” (8U) E
  • Sierra Ponderosa Family
  • Max Data Rate - 3Gbps
  • Configure from 8x8 to 128x128
  • Module Size - 8 Inputs or 8 Outputs
  • Control - RS-232, RS-422, RS-485 & Ethernet
New
6464HD-64

64x64 3G HD-SDI Matrix Switcher

64 HD-SDI

64 HD-SDI

19” (4U) E
  • Sierra Ponderosa Family
  • Max Data Rate - 3Gbps
  • Configure from 8x8 to 64x64
  • Module Size - 8 Inputs or 8 Outputs
  • Control - RS-232, RS-422, RS-485 & Ethernet
88D

8x8 SDI Matrix Switcher

8 SDI

8 SDI

19” (2U) N/A
  • Lassen SDI Series
  • Max Data Rate - 360Mbps
  • Control - RS-232, RS-485, & Ethernet
88DE

8x8 SDI Matrix Switcher With AES Audio

8 SDI

8 SDI

19” (2U) D
  • Lassen SDI Series
  • Max Data Rate - 360Mbps
  • Control - RS-232, RS-485, & Ethernet
  • 1 AES/EBU Audio Channel
88DEE

8x8 SDI Matrix Switcher With AES Audio

8 SDI

8 SDI

19” (2U) D
  • Lassen SDI Series
  • Max Data Rate - 360Mbps
  • Control - RS-232, RS-485, & Ethernet
  • 2 AES/EBU Audio Channels
88DS

8x8 SDI Matrix Switcher With Balanced Stereo Audio

8 SDI

8 SDI

19” (2U) B
  • Lassen SDI Series
  • Max Data Rate - 360Mbps
  • Control - RS-232, RS-485, & Ethernet
  • Digital Volume Control
88HD

8x8 HD-SDI Matrix Switcher

8 HD-SDI

8 HD-SDI

19” (2U) N/A
  • Lassen HD Series
  • Accepts SDI Inputs
  • Max Data Rate - 1.485Gbps
  • Control - RS-232, RS-485, & Ethernet
New
88HD-3G

8x8 3G HD-SDI Matrix Switcher

8 HD-SDI

8 HD-SDI

19” (1U) N/A
  • Shasta HD Series
  • Max Data Rate - 3Gbps
  • Control - RS-232, RS-485, & Ethernet
New
88HDE-3G

8x8 3G HD-SDI Video with 1 Channel Of AES Audio

8 HD-SDI

8 HD-SDI

19” (1U) D
  • Shasta HD Series
  • Max Data Rate - 3Gbps
  • Control - RS-232, RS-485, & Ethernet
New
88HDEE-3G

8x8 3G HD-SDI Video with 2 Channels Of AES Audio

8 HD-SDI

8 HD-SDI

19” (1U) D
  • Shasta HD Series
  • Max Data Rate - 3Gbps
  • Control - RS-232, RS-485, & Ethernet
88HDS

8x8 HD-SDI Matrix Switcher

8 HD-SDI

8 HD-SDI

19” (2U) B
  • Lassen HD Series
  • Accepts SDI Inputs
  • Max Data Rate - 1.485Gbps
  • Control - RS-232, RS-485, & Ethernet
  • Digital Volume Control
New
88HDS-3G

8x8 3G HD-SDI Matrix Switcher with Balanced Stereo Audio

8 HD-SDI

8 HD-SDI

19” (1U) B
  • Shasta HD Series
  • Max Data Rate - 3Gbps
  • Control - RS-232, RS-485, & Ethernet
New
9696HD-128

96x96 3G HD-SDi Matrix Switcher

96 HD-SDI

96 HD-SDI

19” (8U) E
  • Sierra Ponderosa Family
  • Max Data Rate - 3Gbps
  • Configure from 8x8 to 128x128
  • Module Size - 8 Inputs or 8 Outputs
  • Control - RS-232, RS-422, RS-485 & Ethernet