NTS-2 - Measurement KORG - Free user manual and instructions

Product Type	Multifunctional Utility Kit / Digital Oscilloscope
Brand	Korg
Model	NTS-2
Dimensions (W × D × H)	129 × 78 × 39 mm (5.08" × 3.07" × 1.54")
Weight	130 g (4.59 oz)
Power Source	USB bus power (500 mA max) or 2 AAA batteries (alkaline 1.5 V or NiMH 1.2 V)
Current Consumption	400 mA or less
Display	2.8" RGB LCD
Input Jacks	INPUT 1, 2 (3.5 mm TRS mini phone jack, stereo)
Thru Jacks	THRU 1, 2 (3.5 mm TRS mini phone jack)
Output Jacks	OUTPUT 1, 2 (3.5 mm TS mini phone jack, mono)
USB Port	Type-C (for power and data)
Main Functions	Oscilloscope (SCOPE), Function Generator (WAVE), Spectrum Analyzer (FFT), Tuner (TUNER)
Oscilloscope Mode	Up to 4 ch; vertical 10 mV–10 V/div, horizontal 50 µs–1 s/div; trigger: auto, rise, fall, single
Function Generator Mode	Waveforms: Oscillator, LFO, Noise, Pulse, Envelope; frequency 0.01 Hz–10 kHz; output level up to 10 Vpp
Spectrum Analyzer Mode	FFT based; input mono (1L, 1R, 2L, 2R); frequency range 0 Hz–20 kHz
Tuner Mode	Needle or horizontal meter; detection range E0–G8; reference pitch A4=410–480 Hz; accuracy ±0.1 cents
Auto Power-Off	Yes (default 1 hour; configurable to infinite, 5/15/30 min when on USB or battery)
Battery Type Selection	Alkaline or Ni-MH (configured in Global mode)
Included Items	USB cable, assembly instructions
Maintenance	Keep dry, avoid extreme temperatures, use soft cloth for cleaning; no user-serviceable parts inside
Safety	Do not disassemble, use only specified power source, avoid liquid contact, stop use if damaged

Frequently Asked Questions - NTS-2 KORG

How do I switch between operating modes on the NTS-2?

Press the Mode button (labeled MODE) repeatedly to cycle through: Oscilloscope (SCOPE), Function Generator (WAVE), Spectrum Analyzer (FFT), Tuner (TUNER), and Global (GLOBAL).

What is the auto power-off function and how can I disable it?

The auto power-off turns the unit off after one hour of inactivity. To disable: enter Global mode, press Button 4 (SETTINGS: Power) to select Auto Power Off (USB) or Auto Power Off (Battery), then turn the value knob to infinite.

How do I connect the NTS-2 to measure a signal?

Connect a stereo (or mono) mini cable from your signal source to either INPUT 1 or INPUT 2 jack. The unit also provides THRU 1/2 jacks for passthrough. Power via USB or batteries.

Can I use the function generator while measuring an input signal?

Yes, the function generator operates independently. You can output waveforms from OUTPUT 1/2 jacks even while the oscilloscope or other modes are analyzing an input signal.

How do I change the trigger settings in oscilloscope mode?

Press Button 4 (TRIGGER) repeatedly to select Auto, Rise, Fall, Rise single, or Fall single. Turn the value knob to adjust the trigger level (-5 V to +5 V).

What waveforms can I generate with the function generator?

You can choose from Oscillator (sine, square, triangle, sawtooth), LFO, Noise (white, pink), Pulse (positive, negative), and Envelope (linear, exponential). Frequency ranges from 0.01 Hz to 10 kHz.

How do I use the spectrum analyzer (FFT) mode?

Select FFT mode with the Mode button. Use Button 1 to choose input (1L, 1R, 2L, 2R). Button 2 adjusts vertical range, Button 3 adjusts time/FFT range, Button 4 sets trigger. The display shows frequency spectrogram.

How do I tune an analog synthesizer with the NTS-2?

In Tuner mode, connect the synth output to an input. Use Button 1 to switch between Needle or Meter display. Button 2 selects input. Button 3 (CALIB) adjusts reference pitch from A4=410 to 480 Hz. Play a note and adjust tuning until the meter centers.

What type of batteries does the NTS-2 use and how do I set the type?

It uses 2 AAA batteries (alkaline 1.5 V or NiMH 1.2 V). In Global mode > SETTINGS > Power, select Battery Type to choose Alkaline or Ni-MH for accurate battery level monitoring.

How do I clean and maintain the NTS-2?

Wipe the exterior with a soft, dry cloth. Do not use solvents or abrasive cleaners. Avoid exposure to moisture, extreme temperatures, and direct sunlight. Do not attempt to open the unit; there are no user-serviceable parts inside.

USER MANUAL NTS-2 KORG

© 2022 KORG INC. www.korg.com

Published 06/2022

Table of Contents

Introduction....2

Main features of this unit....2

Part names and functions....2

Making connections and turning on the power ......2

Turning the power on/off 2

Auto power-off function 2

Four operating modes ......2

Oscilloscope mode (SCOPE)....2

Function generator mode (WAVE)....2

Spectrum analyzer mode (FFT)....2

Tuner mode (TUNER)....2

Basic operations....3

Oscilloscope mode (SCOPE) 3

Explanations of each parameter ....3

Function generator mode (WAVE) 3

Button 1 (button 3): explanations of each parameter.....3

Button 2 (button 4): explanations of each parameter .....3

CATEGORY = Oscillator....3

CATEGORY = LFO....3

CATEGORY = Noise....3

CATEGORY = Pulse ....3

CATEGORY = Envelope....3

Spectrum analyzer mode (FFT)....3

Explanations of each parameter ....3

Tuner mode (TUNER)......4

Explanations of each parameter ....4

Global mode....4

1: Input 4

2: SETTINGS....4

3: SETTINGS....4

Specifications....4

En

Introduction

Thank you for purchasing the Multifunctional Utility Kit for the Nu:Tekt NTS-2 Oscilloscope Kit. To help you get the most out of your purchase, please read this manual carefully.

Main features of this unit

This product is an assembly kit that you can use to build a digital oscilloscope. Aside from letting you view audio output waveforms and CV signals, this oscilloscope functions as a spectrum analyzer, offers a built-in tuner for tuning analog synthesizers, and lets you output LFO, CV and other signals with its function generator.

Part names and functions

1. Mode button

Use this button to switch between operating modes. Each time you press the button, the mode changes.

a. Oscilloscope (SCOPE)
b. Function generator (WAVE)
c. Spectrum analyzer (FFT)
d. Tuner (TUNER)
e. Global (GLOBAL)

2. Buttons 1-4

The functions assigned to these buttons differ, depending on the operating mode.

3. START/STOP button

Starts and stops measurement. In function generator mode, this is also used to output waveforms to an external device.

4. Value knob

Press to select a sub-menu, and turn to edit the selected parameter.

5. INPUT 1, 2 jacks

Connect a stereo (or mono) mini cable here to input the signal you wish to measure. This lets you monitor the audio output from your musical instrument or input a CV signal.

6. THRU 1, 2 jacks

Used as a thru out for the signal input from the INPUT 1 and 2 jacks.

7. OUTPUT 1, 2 jacks

Outputs the function generator signal.

Connect these jacks to your device with monaural mini plugs.

8. USB (Type-C) port

Use the included USB cable to connect this unit to the USB port on your computer or to a commercially available USB standards-compliant AC adapter (at least 5 V DC 550 mA).

9. Power button

Turns the power on and off. Hold this button down for approximately one second to turn the power off.

10. Battery compartment

Making connections and turning on the power

Use the included USB cable to connect this unit to the USB port on your computer or to a commercially available USB standards-compliant AC adapter (at least 5 V DC 550 mA).

Make sure to use the included USB cable.
Use a cable that's no more than 3 m long when connecting your peripherals to this unit.
Make sure to use an AC adapter that's compliant with USB 2.0 standards. Note that some standards-compliant USB AC adapters might not operate correctly.

Turning the power on/off

Long-press the power button to turn on the unit.

Long-press the power button again to turn the unit off.

Auto power-off function

The Nu:Tekt NTS-2 features an auto power-off function that automatically turns the unit off after one hour has elapsed without the knob, switches, buttons or other controls being operated. The auto power-off function is enabled by factory default.

Auto power-off can be disabled using the steps below.

1. Use the mode button to enter global mode.
2. Press button 4 (SETTINGS: Power) a number of times to select "Auto Power Off(USB)" or "Auto Power Off(Battery)".
3. Turn the value knob to change the value to "infinite".

Four operating modes

Oscilloscope mode (SCOPE)

You can view the waveforms from up to four input sources. The functions below are assigned to buttons 1–4.

1: D I S P L A Y: Switches between input signals.
2: VERTICAL: Sets the display range for the vertical screen direction (voltage).
3: HORIZONTAL: Sets the display range for the horizontal screen direction (time).
4: TRIGGER: Sets which change in input signal causes the display to update.

Function generator mode (WAVE)

In this mode, signal is output from the OUTPUT 1 and 2 jacks. These outputs can be used even while an input signal is being received. You can use the START/STOP button to turn the waveform output on/off, continuously output the waveform by holding down the button, or output only one cycle of the waveform (one-shot) by just pressing the button. The functions below are assigned to buttons 1–4.

1: CATEGORY: Selects the waveform for OUTPUT 2, sets the level and so forth.
2: EDIT: Configures the detailed settings for the OUTPUT 2 waveform.
3: CATEGORY: Selects the waveform for OUTPUT 1, sets the level and so forth.
4: EDIT: Configures the detailed settings for the OUTPUT 1 waveform.

Spectrum analyzer mode (FFT)

This mode lets you observe the frequency characteristics of the input signal, by using a spectrum analyzer that employs an FFT (fast Fourier transform) algorithm. The functions below are assigned to buttons 1–4.

1: INPUT: Switches between input signals.
2: VERTICAL: Sets the display range for the vertical screen direction (voltage).
3: HORIZONTAL: Sets the display range for the horizontal screen direction (time).
4: TRIGGER: Sets which change in input signal causes the display to update. Nor mally, this is set to AUTO.

Tuner mode (TUNER)

This mode measures the pitch of the input signal from the oscillator of an analog synthesizer or other source. You can select between a horizontal meter and a needle-type (VU) meter view. The functions below are assigned to buttons 1–4.

1: DISPLAY: Selects the tuner display mode.
2: INPUT: Switches between input signals to measure.
3: CALIB: Adjusts the pitch lower or higher than the reference pitch of A=440 Hz.
You can adjust the pitch within a range of 410–480 Hz.
4: SCOPE: Switches the oscilloscope display on/off.

Basic operations

1. Each time you press buttons 1–4, the parameter assigned to the button in question changes one at a time and is shown in the popup screen in the display.
2. Once the desired parameter is shown, turn the value knob to edit the value.
3. Measurement starts/stops with each press of the START/STOP button.

This product is a multi-tool intended for use with musical instruments. Do not use this product for anything under than its intended purpose, such as for calibrating measurement devices and so on.

Oscilloscope mode (SCOPE)

Oscilloscope mode lets you monitor the input signals coming from the four input sources (INPUT 1, 2 L/R).

Use VERTICAL to set the voltage range for the vertical screen direction. For example, a "5V" setting will display a 5 V voltage for each mark on the vertical axis.

Use HORIZONTAL to set the time scale in the horizontal screen direction.

Use the DISPLAY setting to select the inputs shown on the oscilloscope, display multiple inputs separately or stacked on top of each other, or to display two inputs as an image for comparing two different signals. To compare two signals with each other, set the vertical and horizontal directions to the same setting.

Use TRIGGER to set the timing at which the scope measures the signal input.

Explanations of each parameter

Button#/NAME	Pop Up	Enc. Push	Enc. Value
1: DISPLAY	Overlay	1 ch mode	1L, 1R, 2L, 2R
		2 ch mode 1L-1R, 1L-2L, 1R-2R, 2L-2R
		4 ch mode ---
	Separate-2 2 ch	mode 1L-1R, 1L-2L, 1R-2R, 2L-2R
		4 ch mode ---
	Separate-4 --- —
	X-Y XY 1L-1R, 1L-2L, 1R-2R, 2L-2R
			XY-TY overlay 1L-1R, 1L-2L, 1R-2R, 2L-2R
2: VERTICAL	1L	Input mode (DC↔AC)	Vertical range: 10 mV–10 V/div (10 m, 20 m, 50 m, 0.1, 0.2, 0.5, 1, 2, 5, 10)
	1R
	2L
	2R
3: HORIZONTAL	Sec/Div	---	Horizontal range: 50 us–1 s/div (50, 100, 200, 500, 1 m, 2 m, 5 m, 10 m, 20 m, 50 m, 100 m, 200 m, 500 m, 1)
	Position	Set position to zero	Change center position
4: TRIGGER	Auto	Set trigger level to zero	Set trigger level: -5.00 V–5.00 V (0.01 V step)
	Rise
	Fall
	Rise single
	Fall single
START/STOP	---	---	Oscilloscope RUN/STOP

* Buttons 1–4 + value knob (when the popup is shown): edits the popup item.
* Button 4 + value knob: push to edit what is triggered.
* START/STOP button: controls the run/stop and single mode standby.

Function generator mode (WAVE)

Use this mode to output oscillator /noise signals that can be handled as audio, or to output LFO/PULSE/envelope signals that can be handled as CV signals. OUTPUT 1 and 2 are completely independent, and different categories can be selected and used for each.

Button 1 (button 3): explanations of each parameter

Button#/NAME	Pop Up	Enc. Push	Enc. Value
1 (3): CATEGORY	CATEGORY	---	Oscillator
			LFO
			Noise
			Pulse
			Envelope
	VOLUME	Vpp dBu	Set Output Level
	CYCLE MODE	---	Cont.
			1-Shot
			Push
	INPUT MONITOR	---	Off
			Input 1L
			Input 1R
			Input 2L
			Input 2R

Button 2 (button 4): explanations of each parameter

CATEGORY = Oscillator

Button#/NAME	Pop Up	Enc. Push	Enc. Value
2: EDIT	WAVE TYPE	---	Sine, Square, Tri, Saw-Rise, Saw-Fall
	PITCH Frequency	Note	0.01–10.00 kHz / C-0 – G9
	SHAPE	Set shape to 50%	0–100%
	PHASE	Set phase to 0°	-180 - +180^

CATEGORY = LFO

Button#/NAME	Pop Up	Enc. Push	Enc. Value
2: EDIT	WAVE TYPE	--	Sine, Square, Tri, Saw-Rise, Saw-Fall
	FREQUENCY	Frequency BPM	0.01–10.00 kHz / 0.5–600.0 BPM
	DIRECTION	Set direction to ±	-, ±, +
	PHASE	Set phase to 0°	-180 – +180°

CATEGORY = Noise

Button#/NAME	Pop Up	Enc. Push	Enc. Value
2: EDIT	WAVE TYPE	---	White, Pink
	TIME	Period BPM 1 ms–1	0.0 s / 0.5–600.0 BPM
	---	---	---
	DUTY	Set duty to 100%	0–100%

CATEGORY = Pulse

Button#/NAME	Pop Up	Enc. Push	Enc. Value
2: EDIT	WAVE TYPE	---	Positive, Negative
	TIME	Period BPM 1 ms-1	0.0 s / 0.5–600.0 BPM
	---	---	---
	DUTY	Set duty to 50%	0–100%

CATEGORY = Envelope

Button#/NAME	Pop Up	Enc. Push	Enc. Value
2: EDIT	WAVE TYPE	---	Linear, Exp.
	TIME	Period BPM 1 ms-1	0.0 s / 0.5–600.0 BPM
	SHAPE	Set shape to 50%	0–100%
	DUTY	Set duty to 100%	0–100%

Spectrum analyzer mode (FFT)

Spectrum analyzer mode uses an FFT (fast Fourier transform) function that lets you monitor the reference waveform along with a frequency spectrogram of the input signal. This is useful for seeing where the effects of a filter or the changes you make to a waveform appear in the frequency bands.

Explanations of each parameter

Button#/NAME	Pop Up	Enc. Push	Enc. Value
1: INPUT -- Input mode: AC ↔DC			1L, 1R, 2L, 2R
2: VERTICAL	INPUT 1L Input mode: AC ↔DC		VERTICAL RANGE:10 mV–10 V/div (10 m,20 m, 50 m, 0.1, 0.2, 0.5, 1,2, 5, 10)
	INPUT 1R
	INPUT 2L
	INPUT 2R
3: HORIZONTAL	Sec/Div	---	Time range (50 us–1 s/div)
	Position	Set position to zero	Change center position
	FFT Range	---	FFT max Range(1 k–20 kHz)
	FFT Position	---	FFT min Range (0–19 kHz)
4: TRIGGER	AUTO,Rise, Fall	Set trigger level to zero	Set trigger level:–5.00 V–5.00 V (0.01 V step)
START/STOP --		FFT RUN/STOP

* Buttons 1-4 + value knob (when the popup is shown): edits the popup item.
* START/STOP button: controls the run/stop and single mode standby.

Tuner mode (TUNER)

Use the tuner to tune one of the four input signals. Both a horizontal meter and a needle-type (VU) meter view are available.

DISP: NEEDLE

DISP: METER

You can set the reference pitch to a value other than 440 Hz (this is also called “concert pitch,” meaning a range from middle C to the A below that). With this function, you can tune multiple oscillators at the same time by transmitting the same pitch (note) and adjusting the pitch while monitoring.

Explanations of each parameter

Button#/NAME	Pop Up Enc. Push Enc. Value
1: DISP	NEEDLE	--- ---
	METER
2: INPUT	INPUT 1L --- ---
	INPUT 1R --- ---
	INPUT 2L --- ---
	INPUT 2R --- ---
	INPUT 1L INPUT 1R	--- ---
	INPUT 2L INPUT 2R	--- ---
3: CALIB --- Set C	CALIB to 440 Hz A4 CALIB (410–480 Hz)
4: SCOPE SCOPE	VIEW On, Off --- ---

* The vertical range and horizontal range settings for scope view can be configured in scope mode.

Global mode

Used for configuring the overall unit.

1: Input

Parameter		Display	Notes
Scope Trigger		INPUT 1L, INPUT 1R, INPUT 2L, INPUT 2R	Configures what is triggered in scope mode.
INPUT 1L	Coupling	DC, AC	Sets the coupling for the input signal. When this is set to AC mode, the DC signal is cut.
	Filter	Off, On
INPUT 1R	Coupling	DC, AC
	Filter	Off, On
INPUT 2L	Coupling	DC, AC	Reduces high-frequency noise included in the input signal.
	Filter	Off, On
INPUT 2R	Coupling	DC, AC
	Filter	Off, On

2: SETTINGS

Parameter		Display	Notes
Display	Brightness	0, 10, 20, ...80, 90, 100%	Sets the display brightness.
	Off time (USB)	1 min, 5 min, 10 min, 15 min, infinite	Sets how much time elapses before the display is turned off when the unit is connected to a USB power source.
	Off time (Battery)	1 min, 5 min, 10 min, 15 min, infinite	Sets how much time elapses before the display is turned off when the unit is running on battery power.
	Popup disp	Off, On	Sets popups (aside from the main popups) to show or hide.
	Scope slow mode	Fixed, Scroll	Selects the display method for scope mode, when “Sec/Div” is set to a unit of 100 ms or greater.When this is “Fixed”, the screen is cleared after the signal is displayed up to the right edge of the screen, and the signal begins displaying again from the left side.When this is “Scroll”, the signal is scrolled to the left and displayed once the display reaches the position set in “Position”. (To show the signal over the entire screen, move the “Position” all the way to the right edge.)

3: SETTINGS

Parameter		Display	Notes
Power	Battery Type	Alkaline, Ni-MH	Selects the battery type.
	Auto Power Off (USB)	5 min, 15 min, 30 min, 1 hour, infinite	Sets the amount of time before auto power-off is enabled, when this unit is connected to a USB power supply.
	Auto Power Off (Battery)	5 min, 15 min, 30 min, 1 hour, infinite	Sets the amount of time before auto power-off is enabled, when this unit is operating on batteries.

Text in boldface indicates the factory default setting.

Specifications

Display:	2.8" RGB LCD
Input/Output jacks:	INPUT' 1, 2 jack (3.5 mm TRS mini phone jack), THRU 1, 2 jack (3.5 mm TRS mini phone jack), OUTPUT 1, 2 jack (3.5 mm TS mini phone jack), USB port (type C)
Power source:	USB bus power (500 mA max.) or 2 AAA batteries (2 × alkaline 1.5 V or 2 × NiMH 1.2 V)
Current consumption:	400 mA or less
Dimensions (W × D × H):	129 × 78 × 39 mm / 5.08" × 3.07" × 1.54"
Weight:	130 g / 4.59 oz
Included items:	USB cable, assembly instructions
Input/output jacks:
INPUT 1, 2 (stereo × 2)	Input impedance: 1MΩ typ.Maximum input voltage: -10 V to +10 V
THRU 1, 2 (stereo × 2)
OUTPUT 1, 2 (mono × 2)	Output impedance: 47Ω typ.Maximum output voltage: -5 V to +5 V
Oscilloscope:
Display modes:	Single, stereo (INPUT 1L-INPUT 1R, INPUT 1L-INPUT 2L, INPUT' 1R-INPUT' 2R, INPUT' 2L-INPUT' 2R), 4 ch
Vertical	10 mV–10 V/div, switchable between AC/DC modes
Horizontal 50 us–1 s/div
Trigger:	auto, rise, fall, single (rise), single (fall)
Function generator:
Waveforms: Oscillator, LFO, Noise, Pulse, Envelope
Frequencies:	switchable between 0.01 Hz–10 kHz, Hz, NOTE and BPM modes
Output level:	10 Vpp max, switchable between V/dB modes
FFT:
Input:	mono (1L, 1R, 2L, 2R)
Frequency range:	0 Hz–20 kHz
Tuner :
Display modes:	needle meter (VU), horizontal meter
Inputs:	mono, stereo (INPUT 1L-INPUT 1R, INPUT 2L-INPUT 2R)
Tuning:	12-note equal temperament
Detection range:	E0 (20.60 Hz)-G8 (6,272 Hz), when inputting sine waves
Reference pitch range:	A4 = 410–480 Hz (1 Hz steps)
Measurement accuracy:	±0.1 cents

* Specifications and appearance are subject to change without notice for improvement.