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VGA/XGA Equalized Distribution Amp with buffered outputs- 1X4

Radio Design Labs regular price - $ 299.95

  • 17695
  • Save $ 12300

The EZ-VMD4E is a high-resolution computer video distribution amplifier with four outputs. The input has an associated BIT ID switch to assure compatibility with various computers. Sync is front-panel switch-selectable between standard TTL or video. One of the two outputs is indivually buffered for driving the computer monitor. The other three outputs are driven by separate output amplifiers that include rear-panel gain and equalization trimmers that provide adjustable compensation for quality monitor cable lengths exceeding 100 m (300 ft). All switched functions are easily accessible on the front panel..  MADE IN USA.


  • Input and Outputs on HD15 Female Connectors
  • Wide RGB Bandwidth > 400 MHz Loaded
  • High Resolution Compatibility VGA through QXGA
  • Separate video line driver amplifiers for the LOCAL MONITOR and the three monitor OUTPUTS
  • Reliable Full-Size Switches for Switched Functions
  • Switch-Selectable TTL or Video 75 Ω Input Sync
  • Front-Panel ID Bit Selection for Each Input
  • DC RGB Coupling, Output Polarity & Offset Follow Input
  • Rear-Panel GAIN and EQ Peaking Trimmers
  • HD15 Input Cable Included - 36", 91.44 cm long


  • All Selector Switches Easily Accessible on Front-Panel
  • Ideal Weight and Size for Portable Computer Case


Input:                                       VGA - QXGA RGBHV or RGB with combined sync

Outputs (4):                              LOCAL MONITOR (1, Buffered, ID bit pass-thru to INPUT 1),
                                                OUTPUTS (3, with GAIN and EQ trim)

Gain:                                        Unity (LOCAL MONITOR output), Unity to +6 dB (Monitor outputs)

Equalization (peaking):             None (LOCAL MONITOR output),
                                                 Adjustable 0 to +8 dB at 100 MHz (Monitor outputs)

Video bandwidth:                       > 470 MHz

Video impedance:                      75 Ω (Input and output)

Sync (HV) input:                         500 Ω TTL or 75 Ω Video (Switch-selectable), 0.7 V to 5 V p-p

Sync (HV) output:                       5V TTL

Sync (HV) Propogation delay:    < 4 nS typ.

Sync (HV) Rise time:                  < 4 nS typ.

Sync (combined):                       Output follows input

Bit Control:                                 Switch-selectable (individual selector per input, pin 4,
                                                  over-rides LOCAL MONITOR jack ID bit pass-thru)

24 Vdc power supply current:    70 mA (idle), 90 mA (max.)

Case dimensions:                      5.75” (14.6 cm)W x 5” (12.7 cm)D

Mounting size:                           1/3 rack width

Package Type:                           Cardboard Box

Package Dimensions:                9.5 x 7 x 2.25 in.

Shipping Weight:                       1.59 lbs.

WEEE weight:                           1.175 lbs.

Tariff code:                                8518.40.2000

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