Juntek MHS-5200A User manual

I

Hangzhou Junce Instruments Co., Ltd.
MHS5200 Series Function/Arbitrary
Waveform Signal Generator
User Manual
Rev1.0 AUG 2020

Hangzhou Junce Instruments Co., Ltd.
I
Guaranty and Declaration
Copyright
Hangzhou Junce Instruments Co., Ltd. all right reserved.
Trademark Information
JUNTEK is a registered trademark of Hangzhou Junce Instruments Co., Ltd.
Notices
JUNTEK products are covered by P.R.C. patents, issued and pending.
This document replaces all previously published documentation.
Contact Us
If you have any problem or requirement when using our products or this
manual, please contact JUNTEK.
E-mail: [email protected]
Website: www.junteks.com

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II
Safety Requirement
General Safety Summary
Please review the following safety precautions carefully before putting the
instrument into operation so as to avoid any personal injury or damage to the
instrument and any product connected to it. To prevent potential hazards,
please follow the instructions specified in this manual to use the instrument
properly.
Use Proper Power Cord
Only the exclusive power cord designed for the instrument and authorized for
use within the local country could be used.
Connect the Probe Correctly
If a probe is used, do not connect the ground lead to high voltage since it has
isobaric potential as the ground.
Observe All Terminal Ratings
To avoid fire or shock hazard, observe all ratings and markers on the
instrument and check your manual for more information about ratings before
connecting the instrument.
Use Proper Over-voltage Protection
Ensure that no over-voltage (such as that caused by a bolt of lightning) can
reach the product. Otherwise, the operator might be exposed to the danger of
an electric shock.
Do Not Operate Without Covers
Do not operate the instrument with covers or panels removed.
Do Not Insert Anything Into the Air Outlet
Do not insert anything into the air outlet to avoid damage to the instrument.
Avoid Circuit or Wire Exposure
Do not touch exposed junctions and components when the unit is powered on.
Do Not Operate With Suspected Failures
If you suspect that any damage may occur to the instrument, have it inspected
by JUNTEK authorized personnel before further operations. Any maintenance,
adjustment or replacement especially to circuits or accessories must be
performed by JUNTEK authorized personnel.

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Provide Adequate Ventilation
Inadequate ventilation may cause an increase of temperature in the instrument,
which would cause damage to the instrument. So please keep the instrument
well ventilated and inspect the air outlet and the fan regularly.
Do Not Operate in Wet Conditions
To avoid short circuit inside the instrument or electric shock, never operate the
instrument in a humid environment.
Do Not Operate in an Explosive Atmosphere
To avoid personal injuries or damage to the instrument, never operate the
instrument in an explosive atmosphere.
Keep Instrument Surfaces Clean and Dry
To avoid dust or moisture from affecting the performance of the instrument,
keep the surfaces of the instrument clean and dry.
Prevent Electrostatic Impact
Operate the instrument in an electrostatic discharge protective environment to
avoid damage induced by static discharges. Always ground both the internal
and external conductors of cables to release static before making connections.
Handle with Caution
Please handle with care during transportation to avoid damage to keys, knobs,
interfaces, and other parts on the panels.
Notices
1.Make sure that the input power is correct.
2.The shell of the instrument is fragile and easy to corrode. Please don't hit or
close to chemicals to avoid corrosion.
3.Working temperature: 10~ 50℃, storage temperature : 20 ~70℃, and keep
the instrument in a dry environment.
4.Do not attempt to disassemble the instrument， it will void the warranty. There
are no user-serviceable parts inside the instrument. Repairs can only be made
through designated repair outlets or sent back to the factory.
5.Please avoid placing unsafe items such as lighted candles, cups with water,
and corrosive chemicals on the surface of the instrument to avoid damage to
the instrument.
6.The display screen is a fragile device, please do not touch or bump it .
Please avoid children playing with the instrument. When there is dirt on the
LCD surface, wipe it carefully with a soft cloth.
7.Please do not move the instrument violently to avoid causing irreparable
damage to the internal circuit. If the instrument does not work properly, please
contact the supplier!

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IV
Contents
Guaranty and Declaration ................................................................................. I
Safety Requirement ......................................................................................... II
General Safety Summary ..........................................................................II
Notices .....................................................................................................III
Inspection .........................................................................................................1
ChapterⅠMHS5200A Signal Generator Overview ..........................................2
1.The Instrument Introduction ................................................................... 2
2.Model Description .................................................................................. 2
3.Instrument characteristics ...................................................................... 2
4.Specifications .........................................................................................3
ChapterⅡInstrument Introduction ................................................................... 7
1.Front Panel Overview ............................................................................ 7
3.Function area description .......................................................................8
4.Keys description .....................................................................................8
5.Menu function description ...................................................................... 9
ChapterⅢBasic Operations Of the Instrument ..............................................10
1. Power On ............................................................................................ 10
2. Basic operation ................................................................................... 10
3.PC Software Control Output ................................................................ 17
Chapter ⅣFor More Product Information ...................................................... 18

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Inspection
When you get a new MHS5200A series dual-channel signal generator, it is
recommended that you inspect the instrument according to the following steps.
Inspect the Packaging
If the packaging has been damaged, do not dispose the damaged
packaging or cushioning materials until the shipment has been checked for
completeness and has passed both electrical and mechanical tests. The
consigner or carrier shall be liable for the damage to the instrument resulting
from shipment. We would not be responsible for free maintenance/rework or
replacement of the instrument.
Check the Contents
Please check the contents according to the packing lists. If the
instruments are damaged or incomplete, please contact your JUNTEK sales
representative.
Host
MHS-5200A Series Dual Channel Signal Generator
1pc
Accessory
Power Adapter
1pc
USB Cable
1pc
Signal Connection Cable
2pcs
Quick Guide
1pc
Certificate of Conformity
1pc
Inspect the Instrument
In case of any mechanical damage, missing parts, or failure in passing the
electrical and mechanical tests, contact your JUNTEK sales representative.

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2
ChapterⅠMHS5200A Signal Generator Overview
1.The Instrument Introduction
The MHS-5200A series of instruments use large-scale FPGA integrated
circuits and high-speed MCU microprocessors. The internal circuit adopts
surface mount technology, which greatly improves the anti-interference and
service life of the instrument. The display interface adopts LC1602 liquid
crystal display, which is divided into two lines of upper and lower displays. The
upper line displays the current frequency, and the lower line displays other
variable parameters or functions. It is flexibly set by the page key, which
greatly enhances the operability. This instrument has great advantages in
signal generation, waveform sweeping, parameter measurement and use. It is
an ideal test and measurement equipment for electronic engineers, electronic
laboratories, production lines, teaching, and scientific research.
2.Model Description
This series of instruments are divided into four models, the main
difference is the maximum frequency of sine wave output, as described below:
Model
Sine wave output maximum frequency
MHS-5206A
6MHz
MHS-5212A
12MHz
MHS-5220A
20MHz
MHS-5225A
25MHz
3.Instrument characteristics
The instrument adopts direct digital synthesis (DDS) technology and FPGA
design, which can reduce power consumption
The instrument can output two channels, the two channels work
synchronously, and the phase difference is adjustable
With linear frequency sweep and logarithmic frequency sweep function up
to 999 seconds
It has basic function waveforms such as sine wave, triangle wave, square
wave,rising sawtooth, falling sawtooth, pulse wave with adjustable duty
cycle, and 16 groups of arbitrary waveforms customized by the user;
There are 10 sets of parameter storage locations M0~M9, and the data of
M0 will be automatically loaded after power on;
Below 12MHz, the maximum amplitude can reach 20Vpp, and above
12MHz, the maximum amplitude can reach 15Vpp;
Built-in precision -20dB attenuator, the minimum amplitude resolution is

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1mV
With -120%~+120% DC bias function;
Pulse wave duty cycle adjustment is accurate to 0.1%;
With 4 TTL outputs with variable phase difference;
It has the functions of frequency measurement, period measurement,
positive and negative pulse width measurement, duty cycle measurement
and counter;
It can select four frequency measurement gate times to achieve a balance
between speed and accuracy
All parameters can be calibrated by internal procedures
The powerful communication function and fully open communication
protocol make the secondary development very simple
After connecting with the PC, the PC can be used to control the instrument,
and the arbitrary waveform can be edited on the PC and then downloaded
to the instrument to output the waveform
This type of machine can be equipped with an optional power module, so
that the signal output amplitude can reach 40Vpp, and the maximum
output current can reach 1A;
4.Specifications
Model selection
MHS-5206A
MHS-5212A
MHS-5220A
MHS-5225A
Sine wave frequency range
0~6MHz
0~12MHz
0~20MHz
0~25MHz
Square wave frequency range
0~6MHz
Pulse wave frequency range
0~6MHz
TTL / COMS digital signal frequency range
0~6MHz
Arbitrary / other waveform frequency range
0~6MHz
Frequency characteristics
Frequency minimum resolution
10mHz
Frequency error
±5x10-6

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Frequency stability
±1X10-6/5 hours
Arbitrary / other waveform
50Ω±10%
Amplitude characteristic
Amplitude range (peak-to-peak value)
5mVp-p~20Vp-p
Amplitude resolution
1mVp-p (-20db attenuation) 10mVp-p(No attenuation)
Amplitude stability
±0.5%(Each 5 hours)
Amplitude error
±1%+10mV(Frequency1KHz,15Vp-p)
Offset range
-120%~+120%
Offset resolution
1%
Relative range
0~359°
Phase resolution
1°
Waveform characteristics
Waveform type
Sine、Square、pulse (adjustable duty cycle, precise
adjustment of pulse width and period), triangular wave,
partial sine wave, CMOS wave, DC level (set DC amplitude
by adjusting offset), half wave, full Wave, positive staircase
wave, anti-ladder wave, noise wave, exponential rise,
exponential drop, Symplectic pulse and Lorenz pulse and
60 arbitrary wave forms
Wave length
2048 points
Waveform sampling rate
200MSa/s
Waveform vertical resolution
12 bits
Sine wave
Harmonic Suppression
≥40dBc(<1MHz);
≥35dBc(1MHz~25MHz)

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Total harmonic distortion
<0.8%(20Hz~20kHz)
Square wave
Rise and fall time
≤20ns
Overshoot
≤10%
Duty cycle adjustment range
0.1%-99.9%
TTL signal
Output level
≥3Vpp
Fan-out coefficient
≥20TTL
Rise and fall time
≤20ns
COMS signal
Low level
＜0.3V
High level
1V~10V
Rise and fall time
≤20ns
Saw tooth wave
Duty cycle＞50%
Saw tooth wave
Duty cycle＜50%
Saw tooth wave
Arbitrary wave
Quantity
16 groups
Storage depth / group
1KB / 16 groups
Waveform output
Frequency measurement range
GATE-TIME=10S 0.1HZ-60MHZ
GATE-TIME=1S 1HZ-60MHZ
GATE-TIME=0.1S 10HZ-60MHZ
GATE-TIME=0.01S 100HZ-60MHZ

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Input voltage range
0.5V-pp~20Vp-p
Counting range
0~4294967295
Counting method
Manual
Positive and negative pulse width
measurement
10ns resolution, maximum measurement 10s
Period measurement
20ns resolution, maximum measurement 20s
Duty cycle measurement
0.1% resolution, measuring range 0.1% ~ 99.9%
Source selection
1. EXT.IN input (AC signal)
2. TTL_IN input (digital signal)
Communication characteristics
Interface method
Use USB to serial interface
Communication rate
57600bps
Protocol
Using the command line, the agreement is open
Other
Power supply
DC 5V±0.5V
Dimension
180*190*72mm
Net weight
550g(Host) 480g(Annex)
Gross weight
1090g
Working environment
Temperature:-10℃~50℃Humidity＜80

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ChapterⅡInstrument Introduction
1.Front Panel Overview
Panel introduction video:https://youtu.be/flecFKTi9v8
Figure 2-1-1 MHS5200A front panel diagram
Table 2-1-1 MHS5200A front panel diagram illustration
Label
Illustration
Label
Illustration
1
LCD
5
Ext.In input port
2
Status Indicator
6
CH1 output port
3
Operation keys
7
CH2 output port
4
Shuttle knob
2.Rear Panel Overview

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Figure 2-2-1 MHS5200A rear panel diagram
Table 2-2-1 MHS5200A rear panel diagram illustration
Label
Illustration
Label
Illustration
1
DC5V power input interface
3
TTL input/output interface
2
USB communication interface
4
Power switch
3.Function area description
The liquid crystal display of the instrument is divided into 2 functional
areas, as shown in Figure 2-2, and the description of each part is shown in
Table 2-2.
Figure 2-2-1 MHS5200A display diagram
Table 2-2-1 MHS5200A functional area description
Label
Function area description
1
Frequency display
2
Operation function prompt
4.Keys description
Item
Illustration
Move the cursor to the left to increase the adjustment parameter step
value
Move the cursor to the right to decrease the adjustment parameter step
value
Function selection page up key
Function selection page down key

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Confirm key
Channel switching (CH1/CH2)
Switch the function position, adjust the frequency when ”*” sign is in the
first line, and adjust the function option when "*" sign is in the second line
Press this combination keys to quickly enter the waveform adjustment
interface
Press this combination keys to quickly enter the amplitude adjustment
interface
Press this combination keys to turn off or turn on the output
5.Menu function description
1
F00015.00000KHz
It indicates the frequency of the current output waveform
2
WAVE:SINE
WAVE means waveform, SINE means sine wave
3
WAVE:SQUARE
SQUARE means square wave
4
WAVE:TRIANGLE
TRIANGLE means triangular wave
5
WAVE:SAWTOOTH-R
SAWTOOTH-R means rising sawtooth wave
6
WAVE:SAWTOOTH-F
SAWTOOTH-F means falling sawtooth wave
7
WAVE:ARB0
ARB means arbitrary waveform, 0 means the arbitray wave which
saved at the location 0, there are 0-15 arbitrary waveforms in total
8
AMPL: 05.00V
AMPL means the peak-to-peak value (voltage) of the output
waveform
9
OFFS：000%
OFFS means offset function, which can be adjusted from -120% to
+120%
10
DUTY：50.0%
DUTY means the function of adjusting the duty cycle
11
PHASE：000°
PHASE means the phase difference between channel 1 and
channel 2
12
TRACE：OFF
OFF means channel 2 track channel 1 is turned off, and ON means
that it is turned on. After turning on, the value of channel 2 will
change with the change of channel 1.
13
FREQ-UNIT:KHZ
It means the unit of output frequency. In this case, the unit is KHz,
which can be switched by pressing the OK button.
14
INVERT：OFF
The one-key reverse function can reverse the output waveform
phase.

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15
BURST：OFF
It means that the burst function is on or off
16
MSR-SEL:Ext.IN
Ext.IN means analog signal input port, TTL.IN means digital signal
input port
17
MSR-MODE:FREQ.
Measurement mode,FREQ means measure the
frequency;COUNTR means counter function; POS-PW means
measure the positive pulse width; NEG-PW means measure
negative pulse width, PERIOD means measure period; DUTY
means measure duty cycle
18
GATE—TIME：1S
Set the gate time,press OK to switch
19
F=0Hz
It means the frequency of the measured waveform
20
SET SWEEP FRWQ1
Means to set the start frequency of the sweep, set in the previous
line
21
SET SWEEP FREQ2
It means to set the sweep stop frequency, set in the previous line
22
SWEEP TIME:001S
It means to set the sweep time
23
SWEEP MODE:LINE
Sweep mode, LINE means linear sweep, LOG logarithmic sweep
24
SWEEP:OFF
Sweep frequency switch, OFF means off, ON means on
25
SAVE:M0
Save the parameters, select the encoder to switch 10 groups of
storage locations
26
LOAD:M0
Load the parameters, select the encoder to switch 10 groups of
storage locations
ChapterⅢBasic Operations Of the Instrument
1. Power On
Connect to a 5V power supply. You can use the DC5V power adapter to
power the instrument.
The liquid crystal display shows the company name, instrument version
number and serial number.
Enter the main interface.
2. Basic operation
Dual channel output video:https://youtu.be/QN36ijcGNh0

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This section will introduce how to operate the instrument in detail. It should
be noted that the CH2 channel of this instrument is similar to the CH1 channel.
When the green light corresponding to the CH1 is on, it means that the current
operation is the parameter of the CH1 channel. Similarly, when the green light
corresponding to the CH2 is on, it means that the current operation is the
parameter of the CH2 channel. You can switch between channel 1 or channel
2 through【SHIFT+CH1/2/◀】.
(1) Set the waveform of CH1
Setting the waveform video: https://youtu.be/6GrDOgn5twg
In the main interface, when the sign “*” is on the first line, you can press
the key 【OUT/OK】to adjust the output waveform type.The output waveform
types include sine wave, square wave, triangle wave, rising saw-tooth wave,
falling saw-tooth wave and 16 groups of arbitrary waves. Press and hold the
key 【OUT/OK】can return to the original waveform. If you want to quickly
switch the output waveform, you can press the keys【SHIFT+WAVE/PgUp】
to switch the sign "*" to the second line, and then rotate the "ADJUST" knob to
switch the output waveform type. As shown in Figure 2-1-1
Figure 2-1-1
(2) Set the frequency of CH1
Frequency setting video: https://youtu.be/cnt1fRaQi-A
In the main interface , when the sign "*" is on the first line, the cursor can
be moved by pressing the key 【CH1/2/◀】or 【SET/►】to adjust the
frequency step value, and then rotate the "ADJUST" knob to adjust the
frequency of the output waveform. As shown in Figure 2-2-1
Figure 2-2-1
(3) Set the amplitude of CH1
Setting Amplitude Video: https://youtu.be/UfRjFdFM0ic
In the main interface, a cursor will appear in the amplitude setting
interface after pressing the keys【SHIFT+AMPL/PgDn】.Then press the key
【CH1/2/◀】or 【SET/► 】can move the cursor position, and rotate the
“ADJUST” knob to adjust the amplitude of output waveform.As shown in Figure
2-3-1.

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Figure 2-3-1
05.00V in the picture refers to the peak-to-peak value.In this mode of
amplitude setting function, the maximum amplitude is 20V, the minimum value
is 0.20V, and the minimum step value is 0.01 (10mV). As shown in Figure 2-3-2,
press the key 【OUT/OK】to enter the signal -20dB attenuation state. At this
time, the maximum value of the output signal is 2.000V, the minimum value is
0.005V, and the minimum step value is 0.001V (1mV).
Figure 2-3-2
(4) Set the offset of CH1
Setting Bias Video: https://youtu.be/rRq_9ICl9U8
In the main interface, press the key
【WAVE/PgUp】
or【AMPL/PgDn】to enter
the option interface of offset adjustment , and then press the keys
【SHIFT+SET/►】to switch sign “*” to the second line.Next press the key
【CH1/2/◀】or【SET/►】to move the cursor, and rotate the "ADJUST" knob
to adjust the offset parameters. As shown in Figure 2-4-1.
Figure 2-4-1
(5) Set the duty cycle of CH1
Setting Duty Cycle Video: https://youtu.be/5YSrsXele2U
In the main interface, press the key【WAVE/PgUp】or 【AMPL/PgDn】
to enter the option interface of duty cycle adjustment, and then press the keys
【SHIFT+SET/►】can switch the sign "*" to the second line. Press the key
【CH1/2/◀】
or
【SET/►】can move the cursor, and rotate the "ADJUST" knob
to adjust the duty cycle parameters. As shown in Figure 2-5-1.
Figure 2-5-1
(6) Set the phase difference of the two channels
Setting the phase difference video: https://youtu.be/LzTNe5HYbYg
In the main interface, press the key【WAVE/PgUp】or 【AMPL/PgDn】
to enter the option interface of phase adjustment, and then press the keys

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【SHIFT+SET/► 】to switch the sign “*” to the second line, press the key
【CH1/2/◀】or 【SET/►】can move the cursor, and then rotate the “Adjust”
knob to adjust the phase parameters as shown in Figure 2-6-1. It should be
noted that the phase difference is only meaningful when the CH1 frequency
and the CH2 frequency are the same after tracking function is turned on.
Figure 2-6-1
(7) Set the display frequency unit
Unit video at set display frequency: https://youtu.be/rgC_ir3pwmg
In the main interface, press the key【WAVE/PgUp】or 【AMPL/PgDn】
to enter the option interface of the unit of the display frequency,and then press
the keys 【SHIFT+SET/►】, switch "*" to the second line, finally press the key
【OUT/OK】to switch the unit of the frequency: Hz、kHz、MHz. As shown in
Figure 2-7-1.
Figure 2-7-1
(8) Tracking function
Setting up the tracking function video: https://youtu.be/82t4BJYuPeo
The tracking function is used to synchronize the frequency of CH2 with
CH1, and the user can also set amplitude tracking and duty cycle tracking. In
the main interface, press the key【WAVE/PgUp】 or 【AMPL/PgDn】to enter
the option interface of tracking as shown in Figure 2-8-1, and then press the
keys 【SHIFT+SET/►】to switch the "*" to the second line.Next, press the key
【OUT/OK】to switch the status to the on or off. When the tracking function is
turned on, the frequency of the CH2 channel automatically tracks the
frequency of the CH1 channel. In addition, if the amplitude of the CH1 and
CH2 channels are the same before the tracking function is turned on, it will
also automatically track after the tracking function is turned on; if the duty cycle
of the CH1 and CH2 channels are the same before the tracking function is
turned on, it will also automatically track after the tracking function is turned on.
Figure 2-8-1
(9) External signal input port selection
Set external signal input port to select video:
https://youtu.be/n36FlpU6k1k

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Select Ext.IN port for inputting AC signals, and TTL.IN port for inputting
digital signals. In the main interface, press the key 【WAVE/PgUp 】or
【AMPL/PgDn】to enter the input port selection interface as shown in figure
2-9-1, then press the keys【SHIFT+SET/►】 to switch the "*" to the second line,
and then press the key 【OUT/OK】to switch the input port to select Ext .IN or
TTL.IN.
Figure 2-9-1
(10) Measurement function
Setting the measurement function video: https://youtu.be/ZqgAgsAsM4g
After the input signal source is selected, input signal can be measured.
In the main interface, press the key 【WAVE/PgUp】or 【AMPL/PgDn】
to enter the measurement function selection interface as shown in figure
2-10-1,and then press the key 【SHIFT+SET/►】to switch the "*" to the
second line, then press the key 【OUT/OK】to select the measurement
object: FREQ. (frequency), COUNTR (count function), POS-PW (positive
pulse width), NEG-PW (negative pulse width), PERIOD (period), DUTY
(duty cycle).
Figure 2-10-1
After confirming the measurement object, press the key
【AMPL/PgDn】to
enter the gate time selection interface as shown in figure 2-10-2.Press the
key
【OUT/OK】
to select different gate time 10S, 1S, 0.1S, 0.01S. Different
gate time affects the accuracy and speed of frequency measurement.
Figure 2-10-2
After determining the gate time, press the key【AMPL/PgDn】to enter the
measurement result display interface as shown in Figure 2-10-3. This
interface can display the input measurement results, such as frequency (F),
counter (C), positive pulse width (H), negative pulse width (L), period
(T) ,duty cycle (DUTY) and other parameters.