1.888.902.3309 LIVE CHAT
HDSDI-21D HD-SDI/SDI to HDMI Converter by Digital Extender

HDSDI-21D HD-SDI/SDI to HDMI Converter by Digital Extender

Out of stock
HDSDI-21D converts HD-SDI, SDI signal to DVI. Because it is equipped with scaler chip, resolutions can be set up easily.
  • Brand
    Digital Extender
  • SKU
  • Weight
    2.00 lbs
  • Warranty
    1 Year
  • Condition
  • Status
Questions? Ask our experts!

  • $577.15
Market price: $679.00, you save $101.85
  • 15% less


HDSDI-21D converts HD-SDI, SDI signal to DVI. Because it is equipped with scaler chip, resolutions can be set up easily.

Once HD-SDI signal is converted to DVI, user can take advantage of DVI displays at competitive price instead of expensive HD-SDI monitor.


  • Convenient set up of output resolution with menu key
  • Check up input/output resolution through LCD window
  • Supports resolution of HDTV signal up to 1080p@60Hz
  • Capable of setting up screen ratio 16:9 and 4:3


  • TV Broadcast Station
  • Video Wall System
  • Medical Imaging Equipment
  • Exhibition Video Display System
  • Monitoring Systems


  • Input
  • SDI: SMPTE 259M-C (270Mb/s)
  • HD-SDI: SMPTE 292M (1.485, 1.485/1.001 Gb/s)
  • 720P @ 50, 59, 94, and 60 Hz
  • 1080i @ 23, 23, 98, 24, 25, 29, 97, and 30 Hz

  • Output
  • Supports Resolution: 720*480, 800*600 , 1024*728 , 1280*720, 1280*1024 , 1600*1200 , 1920*1080 @60Hz
  • Input Port: HD-SDI/SDI
  • Output Port: HD-SDI/SDI (INPUT Loop Back), DVI-D (Digital RGB)
  • Connector Type: BNC Female Jack, DVI-D Female (DVI-I Connector)
  • Power Supply: DC 12V, 3.0A
  • Operating Temperature & Humidity: 0-40*C, Less than 80% Humidity


HDSDI-21D - 163mm (6.4in) *165mm (6.5in)*25mm (9.8in) (W*D*H)

Free Ground Shipping
We offer free ground shipping on every purchase of $300 and more for US and US territory. Please choose "Free Ground Shipping (UPS/USPS)" option at checkout.

UPS Ground
UPS provides up-to-date tracking information. Ground service takes anywhere from 2-7 working days for delivery depending on destinations.UPS Ground does not deliver on Saturdays, Sundays or Holidays.

USPS Priority Mail/USPS Express Mail For all shipments shipped via USPS, we offer 'DELIVERY CONFIRMATION' number with each package. Difference between tracking number provided by UPS vs USPS Delivery Confirmation number is: Delivery Confirmation status is updated when the delivery has been made or when the package has made it through major USPS stations.

Air Shipment
Air shipments, Overnight, 2nd day and 3 day select methods offer guaranteed delivery time for your shipment. If you are in hurry or in need for the items on schedule, select one of these methods. Up-to-date tracking information is provided with each Air Shipment. AVProSupply has the right to choose between Air shipments to meet or reduce delivery time. For guaranteed delivery of multiple items with expedited shipping, please contact our customer service representative for personalized assistance to get your items delivered to you when you need them.

International Customers
We offer shipping via USPS/UPS for our international customers. You can find different shipping options during checkout.

Most items ordered from AVProSupply will be shipped out from our California Warehouse. Will-Calls are only allowed with Appointment Only - Please call Customer Service to set one up between the hours of 9am to 6pm PST.


Major Credit Cards: Visa, MasterCard, Discover and American Express.
Paypal: You can select an option of Paying with Paypal in our shopping cart.
Money orders: and personal checks or company checks (may take up to 10 days to clear).
Wire Transfer: ( Bank Transfer ) Only for the amount over $500. Contact us for the bank details.
Phone Orders: To place a phone order please call 1.888.902.3309 or 1.916.246.6264 and one of our Customer Service Representatives will take your order (8:00am - 6.00pm PST).

Purchase order: Fax purchase orders to 1.916.672.2557

We Offer A 30-Day Money Back Guarantee: 
Our main goal is to ensure your complete satisfaction with our service and products. If, for any reason, you are not 100% satisfied with your purchase, you can return it within 30 days of the purchase date for a full refund. Our 30-day money back guarantee applies to all of the products we sell, except for: TVs and monitors 20" and larger, Special Order merchandise, or any item indicated as non-returnable. Shipping is not refundable. Prior to returning your purchase, a Return Merchandise Authorization (RMA) number will be provided to you.

Refunds on returned items will be issued in the same payment form as received from the customer at the time of purchase. Once we receive the product and it passes inspection, we will credit your account. Please allow 3 - 6 business days for a credit to appear on your account.

If the item was sent back to us for an exchange, please allow 3 - 5 business days for the replacement to be processed.

No Returns/Exchanges on the following:

TVs and monitors 20" and larger
Special Order merchandise
Any item indicated on the website as non-returnable

For more information see our official Return Policy

  • Shipping Info
    We offer free ground shipping on every purchase of $300 and more for US and US territory. We deliver worldwide.
  • Payment Methods

  • Return Policy
    We Offer a 30-Day Money Back Guarantee