Detailed Information

B-1020

COAXIAL CABLE DRIVER & MATCHING AMPLIFIERS

Matching Amplifier
Model VDE-
Wideband: DC to over 30MHz

• Signal Input

  • 0 to ±50 volt peak differential.

  • (0-100V PK-PK) standard. Other available.

  • Peak common mode voltage that will not damage amplifier or distort the output.

    • 200 volt steady state

    • 450 volt transient

  • Impedance

    • 1.0 megohm in parallel with 10pF or 2.0 meghom in parallel with 15pF as ordered. 

• Signal Output

  • 0 to ±10 volts (20 volts PK-PK) into 50 ohm or greater load.

  • ±200mA. Peak Maximum load current.

  • Matching amplifier isolation of signal output from signal input is 500 kilohm in parallel with 20pF.

  • Gain / frequency. See figure #1 below

  • Undistorted output voltage swing. See figure #2 below

  • Square wave input. Rise and fall time<10ns.

  • Matching amplifier output is calibrated into a specified length of cable and a 50 ohm or greater load as specified by the customer.

• Power Requirements

  • 105V to 125V AC, 50/60Hz.

  • Power Consumption-5W.

• Environmental

  • Indoor.

  • 0 °C to +50 °C.

• Dimensions

  • 3 1/2” high x 7” wide x 8 3/8” deep.

• Miscellaneous

  • Red LED indicates power on. 

  • Model VDE-Matching Amplifier includes cabinet, amplifier, 115 volt 50-400Hz power supply, cable and terminations as specified by the
    customer. 

  • Power supply input isolated for 2000 volts.

  • Matching amplifier may also be used with other test equipment such as voltmeters, signal generators, recorders, etc.

• WARNING

  • MATCHING AMPLIFIER OUTPUT COAXIAL CABLE SHIELD IS NOT
    GROUNDED. FOR SAFETY, OUTPUT COAXIAL CABLE SHIELD SHOULD BE GROUNDED AT COAXIAL CABLE TERMINATING RESISTOR. 

  • If output coaxial cable is connected to matching amplifier input ground or matching amplifier 115 volt ground, there may be excessive ground currents causing electrical noise in matching amplifier output.

• CAUTION

  • Do not subject output to reverse voltage.

  • External pickup from coaxial cables can easily exceed safe values if the cables are run near high pulse current conductors.

  • The matching amplifier, coaxial cable and coaxial cable terminating resistor are calibrated as a system. 

  • If any of these are changed, the calibration, the high frequency
    response and the pulse response may change.

• Options On Request

  • Signal Input Variations Available:

    • Any maximum input voltage from ±0.5 to over ±250 volt with proper input range selected, to over 900KV when using Ross Engineering Corp. voltage dividers.

  • Signal Output Variations Available:

    • Coaxial cable lengths from 0 to 500 feet

  • Power Options Available:

    • Battery or DC operated. 115V, 208V, 240V 50-400Hz.

  • Environment Additional Requirements Available:

    • Outdoor

    • Transformer Oil

  • Miscellaneous Available:

    • Power on/off switch