VQ™ Vector

VQ™ Vector

Neuromuscular Interferential Stimulator

  • Digital, programmable
  • Portable
  • Microprocessor controlled
  • Custom or standard presets
  • LCD with compliance meter
  • Ability to link presets
  • Uses 4 AA batteries/powerpack or AC adapter
  • Made in the U.S.A.

Product Info

Part Number


FS VECTOR VQ Vector Stimulation Syste
1 lead wire, 1 battery pack, 1 AC adapter, 1 electrode package and carry case


Power Source Four (4) alkaline AA batteries or AC adapter
Size 5.25” x 2.8” x 1.75” (including belt clip)
Weight 10.8 oz with batteries
Torerances All electrical specifications are ± 10 percent into a 500 ohm load for each
channel and using the AC adapter, unless stated otherwise
Treatment Timer 1 min – 8 hr, or continuous
Compliance Timer
  • 0-999 hr, 59 min (41.66 days) in 1 min intervals
  • Can be locked out from patient
  • Can be reset by clinician
Preset Programs
  • Preprogrammed presets: 5
  • Available presets: 75
User Interface
  • Custom LCD display
  • LED backlighting for use in low light
  • Indicators for “Low Battery” and “Pause”
  • Flashing indicator to show current flow
Adjustable Treatment Time Use only electrodes with an electrically conductive gel recommended for use muscle stimulators that are currently available in the marketplace
Output Type (IF) Interferential, constant; (NM) Neuromuscular, uses a 6 sec ON, 6 sec OFF duty cycle. The ON cycle includes a 2 sec ramp-up period
Output Current 0-50 mA in 0.5 mA increments
Base Carrier Frequency 4000 Hz, fixed medium frequency
Interference Frequency 1-150 Hz in 1 Hz increments
  • Standard (4 electrode): 2 channels each having square wave outputs
  • Premodulated (2 electrode): 1 channel with rectangular waves
Pulse Duration
  • Standard: Fixed at 125 μs for each
  • Premodulated: 5-125 μs
Pulse Coordination Modes
  • Continuous
  • 1|1 Oscillating 60% of set frequency for 1 sec, then 160% for 1 sec Cycle repeats every 1 sec
  • 6|6 Oscillating 60% of set frequency for 6 sec, then 160% for 6 sec Cycle repeats every 6 sec
  • 6|6 60% of set frequency then ramps to 160% of set frequency over 6 sec; the next 6 sec it ramps from 160% to 60% Cycle repeats every 12 sec
Vectoring Increases one channel’s amplitude while simultaneously decreasing (by the same percentage) the other channel’s amplitude with a single key press. The range of adjustment will be 25% of the user setting. At the maximum level of change, one channel will be at 75% of original setting and the other channel will be at 125% of original setting.
Vector Sweep Continuously changes the amplitudes of the 2 channels through the vectoring range (75% of original setting to 125% of original setting) over 60 sec
Automatic Switchingto Next Preset 1-75, or OFF


  • Relaxation of muscle spasms
  • Prevention or retardation of disuse atrophy
  • Increasing local blood circulation
  • Muscle re-education
  • Immediate post-surgical stimulation of calf muscles to prevent venous thrombosis
  • Maintaining or increasing range of motion


Stimulators should not be used on patients with cardiac demand pacemakers

Adverse Reactions

Skin irritation and burns beneath the electrodes have occasionally been reported with the use of stimulators.

OActive and eCast are trademarks of VisionQuest Industries, Inc.


To download the following PDFs, right-click or option-click (on Mac) and select “Save Link As”
VQ Vector Patient Manual (VQO060258REV01)

VQ Vector Universal Protocol (VQ061310REV00)
VQ Vector Universal Protocol (Spanish) (VQ061310REV00)