The 501ADA-EQ Analog Distribution Amplifier is a general purpose amplifier for distributing 75Ω analog video signals.

The 501ADA-EQ features one balanced equalized input with nine unbalanced outputs. The 501ADA-EQ amplifier has been designed to distribute a wide range of analog video signals. It can also distribute other pulses and signals that are less than 2V p-p.

The 501ADA-EQ is housed in the 3RU 500FR Exponent frame that will hold up to 16 modules.


  • 75Ω or high impedance input (jumper selectable)
  • High common mode range and common mode rejection ratio (CMRR)
  • Gain Control
  • Jumper selectable AC or DC coupling
  • Cable equalizer adjustment range: 0 to 300m of Belden 8281 or 1694
  • Looping feature with external "T" connector
  • Consistent input impedance if card power is lost
  • VistaLINK® capable for remote monitoring via SNMP (using VistaLINK® PRO) when installed in 500FR frame with 500FC VistaLINK® Frame Controller
  • Card Edge LED's
  • Module Status/Local Fault
  • Power Supply Status
  • EQ Warning

Download Datasheet


Analog Video Input
StandardsAny analog video format, up to 2V p-p, and 30MHz bandwidth
Number of Inputs1
ConnectorBNC per IEC 61169-8 Annex A
Common Mode Range> 6V p-p
CMRR> 70dB to 1kHz
Signal Amplitude2.5V p-p max
Cable Equalizer0 to 300m of Belden 8281 or 1694 cable
Impedance75Ω terminated, 35kΩ Hi-Z (jumper selectable)
CouplingAC or DC (jumper selectable)
Return Loss> 40dB to 10MHz, > 30dB to 30MHz
Analog Video Output
Number of Outputs9
ConnectorBNC per IEC 61169-8 Annex A
Gain Control Range±5dB
DC Level< ±100mV (with DC coupling active)
Frequency Response< ±0.05dB (no equalization)
< ±0.09dB for 5 to 100m Belden 8281 or 1694 (to 5.5MHz)
< ±0.15dB for 100 to 300m Belden 8281 or 1694 (to 5.5MHz)
Differential Gain< 0.17% 0 to 300m
Differential Phase< 0.19° 0 to 300m
C/L gain inequality< ±0.1% for all cable lengths
C/L Delay< ±2ns
Isolation42dB to 10MHz, 32dB to 30MHz
Return Loss> 40dB to 30MHz
Noise Performance
NTC7 Weighting RMS< -78dB
15kHz to 5.5MHz RMS< -70dB
Voltage+12V DC
Power1.2 Watts
EMI/RFIComplies with FCC Part 15 Class A, EU EMC Directive
Number of Slots1

Ordering Information

501ADA-EQAnalog Video Distribution Amplifier with Cable Equalization (1 x 9)
500FR3RU exponent Compact High Density Distribution Frame
S501FR500 Series Standalone Enclosure
500FCVistaLINK® Frame Controller
CP-2116E-HRemote Control Panel
CP-2232ERemote Control Panel