The QuadStar II is a portable four channel digital NMS, INF and TENS device. The unique device with 3 waveforms, symmetric biphasic, pulsed sine and asymmetrical biphasic can be programmed to deliver NMS, INF or TENS therapy .

There are 9 preprogrammed Fixed Sequences which enable the user to program 20 minutes of INF followed by 20 minutes of NMS therapy and ending with 20 minutes of TENS therapy. A Programmable Sequence allows the user to customize the therapy and times. A graphic representation of the timing parameters is shown on the screen to assist the user to program the on/off ramps and on/off times.

In addition there is a patient lock system when activated prevents the patient from changing any parameters. When the lock is turned off, a patient compliance meter is displayed.

• Dimensions: 6.30" x 2.75" x 1.25" (160mm x 70mm x 32mm)
• Weight: 11.4 oz. (323 grams)
• Power Supply: 4 AA Batteries, type LR6
• Channels: 4
• Electrodes/Leadwires: 8
• Tolerance: +/- 1%

• Waveform: Pulsed Sine
• CH1/CH3 (Carrier) Frequency: 4000 Hz
• CH2/CH4 Frequency: 4001-4150 Hz
Beat Frequency: 1-150 Hz
• CH1/CH2 are an Interferential Pair
• CH1: Fixed Frequency (4000 Hz)
• CH2: Adjustable 4001-4150 Hz
• CH3/CH4 are an Interferential Pair
• CH3: Fixed Frequency (4000 Hz)
• CH4: Adjustable 4001-4150 Hz
• Premodulated INF (Using one Channel): A mixed Interferential Beat Frequency will be produced only out of CH 1 and/or CH 3.
Modes -
• Constant: Beat Frequency is adjustable from 1-150 Hz
• Sweep 1: Beat Frequency Modulates from 1-10 Hz and back over 12 seconds (6 second increase, 6 second decrease)
• Sweep 2: Beat Frequency Modulates from 80-150 Hz and back over 16 seconds (8 second increase, 8 second decrease)
• Sweep 3: Beat Frequency Modulates from 1-150 Hz and back over 20 seconds (10 second increase, 10 second decrease.
• Intensity: 0-98 mA peak to peak
• Output Voltage: 0-33 Volts peak to peak (adj.)

• Waveform: Symmetrical, biphasic, square Asymmetrical, biphasic, square
• Pulse Rate: Adjustable 1-120 Hz peak to peak
• Pulse Width: Adjustable 50-400 uS
• On Ramp: 0-10 seconds
• On Time: 0-99 seconds
• Off Ramp: 0-10 seconds
• Off Time: 0-99 seconds
Modes:
• Constant - Use the Constant Mode or a Pulse Rate greater than 60 Hz. for the relaxation of muscle spasms only. Use of continuous stimulation and/or rates above the normal physiological range (e.g., greater than 60 Hz) could lead to rapid onset of muscle fatigue, making the device less effective in producing repeated forceful muscle contractions.
• Cycled
• Reciprocating
• Intensity: 0 - 120 mA from peak to peak (adj)Mo
• Voltage: 0- 60 volts from peak to peak (adj.)

• Waveform: Asymmetrical Biphasic Square
• Pulse Rate: Adjustable 1-120 Hz
• Pulse Width: Adjustable 10-250 µS
Modes:
• Constant: Pulse Rate (Hz) is adjustable from 1-120 Hz and Pulse Width (µS) is adjustable from 10-250 µS.
• B (Burst): 8 Pulses per burst, 2 bursts per second. Pulse Width (µS) is adjustable from 10-250 µS.
• M (Modulation): Pulse Rate (Hz) is Adjustable from 1-120 Hz and Pulse Width (µS) is adjustable from 10-250 µS and decreases 50% and back to set value over a 10 second cycle.
• Intensity: 0-100 mA peak to peak
• Voltage: 0-50 Volts peak to peak