OWON Lilliput HDS1022M-N User manual

HDS-N Series Handheld Digital Storage

Oscilloscope & Multimeter

User Manual

 HDS1022M-N

 HDS2062M-N

 HDS3102M-N

WWW.OWON.COM.HK

Mar. 2013 edition Ver1.5.2

The Lilliput's products are under the protection of the patent rights in America and other countries,

including ones which have already obtained the patent rights and those which are applying for. The

information in this manual will replace all that in the materials published originally.

The information in this manual was correct at the time of printing. However, OWON will continue to

improve products and reserves the rights to changes specification at any time without notice.

OWON is the registered trademark of the Lilliput Company.

Headquarter: Fujian Lilliput Optoelectronics Technology Co.,Ltd.: The mansion of

optoelectronics, 19 Heming Road, Lantian industrial zone, Zhangzhou, Fujian, China

Tel:+86-596-2130430 Fax:+86-596-2109272

Web: www.owon.com.hk Mail: Business Consulting: [email protected]

Sale service: service@owon.com.hk

Branch: Xiamen Lilliput Technology Co.,Ltd.: the 5th floor, B Area, Chuangxin Mansion, Software

Park, ZhenZhuWan, Huandao RD, Xiamen, Fujian, China

Tel:+86-592-2575666 Fax:+86-592-2575669

General Warranty

Lilliput warrants that the product will be free from defects in materials and

workmanship for a period of 3 years from the date of purchase of the product by the

original purchaser from the Lilliput Company. And the warranty period of accessories

such as probe, battery, adapter is one year. This warranty only applies to the original

purchaser and is not transferable to the third party. If the product proves defective

during the warranty period, Lilliput either will repair the defective product without

charge for parts and labor, or will provide a replacement in exchange for the defective

product. Parts, modules and replacement products used by Lilliput for warranty work

may be new or reconditioned to like new performance. All replaced parts, modules

and products become the property of Lilliput.

In order to obtain service under this warranty, Customer must notify Lilliput of the

defect before the expiration of the warranty period. Customer shall be responsible for

packaging and shipping the defective product to the service center designated by

Lilliput, and with a copy of customer proof of purchase.

This warranty shall not apply to any defect, failure or damage caused by improper use

or improper or inadequate maintenance and care. Lilliput shall not be obligated to

furnish service under this warranty a) to repair damage resulting from attempts by

personnel other than Lilliput representatives to install, repair or service the product; b)

to repair damage resulting from improper use or connection to incompatible

equipment; c) to repair any damage or malfunction caused by the use of non-Lilliput

supplies; or d) to service a product that has been modified or integrated with other

products when the effect of such modification or integration increases the time or

difficulty of servicing the product.

Please contact the nearest Lilliput's Sales and Service Offices for services or a

complete copy of the warranty statement.

For better after-sales service, please visit www.owon.com.hk and register the

purchased product online.

Excepting the after-sales services provided in this summary or the applicable warranty

statements, Lilliput will not offer any guarantee for maintenance definitely declared or

hinted, including but not limited to the implied guarantee for marketability and

special-purpose acceptability. Lilliput should not take any responsibilities for any indirect,

special or consequent damages.

OWON HDS-N Series Handheld DSO & DMM Contents

Table of Contents

1. DECLARATION OF CONFORMITY················································· 1

1.1 Declaration of Conformity ·······································································································1

1.2 Package Contents ······················································································································2

2. SAFETY INFORMATION···································································· 3

2.1 Safety Symbols and Terms ·······································································································3

2.1.1 Safety Symbols·············································································································· 3

2.1.2 Safety Terms.················································································································· 3

2.2 General Safety Information ·····································································································3

3. GENERAL CHARACTERISTICS····················································· 6

4. PERFORMING THE GENERAL INSPECTION ····························· 7

4.1 Performing the General Inspection ·························································································7

4.1.1 Check whether there is any Damage on it Due to Transportation··························· 7

4.1.2 Make a Check on Accessories ···················································································· 7

4.1.3 Make a Check on the Complete Instrument······························································· 7

5. INPUT CONNECTIONS······································································ 8

5.1 Input Connections ·····················································································································8

5.1.1 Input connections·············································································································· 8

5.1.2 The connection of 1KHz/5V Square-wave test signal ······················································· 9

5.2 Front Panel and Keys Overview ······························································································9

6. USING THE OSCILLOSCOPE························································ 12

6.1 About this Chapter··················································································································12

6.2 Powering Up the Oscilloscope································································································12

6.3 Oscilloscope Operation Window····························································································12

6.4 Menu Description····················································································································14

6.5 Manually Setting the Vertical System, Horizontal System and Trigger Position··············15

6.5.1 Setting the Vertical System······························································································15

6.5.2 Setting the Horizontal System and Trigger Position·························································15

6.6 Recall factory settings·············································································································18

6.7 Input Connections ···················································································································19

6.8 Displaying an Unknown Signal with Auto Set······································································19

6.9 Automatic Zero-returning of Trigger Horizontal Position and Trigger Level Position ···20

6.10 Automatic Measurements·····································································································20

6.11 Freezing the Screen···············································································································21

6.12 Using Average for Smoothing Waveforms··········································································22

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OWON HDS-N Series Handheld DSO & DMM Contents

6.13 Using Persistence to Display Waveforms············································································22

6.14 Using Peak Detection to Display Glitches ···········································································23

6.15 Selecting AC-coupling···········································································································24

6.16 Reversing the Polarity of the Displayed Waveform ···························································25

6.17 Using Waveform Mathematics Functions···········································································26

6.18 Use USB mass storage device to save waveform data ························································27

7. USING THE MULTIMETER······························································ 28

7.1 About this Chapter··················································································································28

7.2 Making Meter Connections····································································································28

7.3 Multimeter Operation Window ·····························································································28

7.4 Making Multimeter Measurements ·······················································································29

7.4.1 Measuring Resistance Values·····················································································29

7.4.2 Measuring Diode··········································································································30

7.4.3 On-off Test·····················································································································31

7.4.4 Measuring Capacitance·······························································································31

7.4.5 Measuring DC Voltage·································································································32

7.4.6 Measuring AC Voltage·································································································33

7.4.7 Measuring DC Current·································································································34

7.4.8 Measuring AC Current·································································································35

7.5 Freezing the Readings·············································································································36

7.6 Taking a Relative Measurement·····························································································37

7.7 Selecting Automatic/ManualRange Adjustment···································································38

8. ADVANCED FUNCTION OF OSCILLOSCOPE·························· 39

8.1 About this Chapter··················································································································39

8.2 Setting the Vertical CH1 and CH2·························································································39

8.2.1 Setting the Channel Coupling·····················································································40

8.2.2 Open and Close Settings on Channel ·······································································41

8.2.3 Setting the probe attenuation······················································································41

8.2.4 Setting of Inverted Waveform ·····················································································42

8.3 Make the Math Function Menu Setting ················································································42

8.4 Setting the Trigger System······································································································43

8.5 Triggering Control ··················································································································44

8.5.1 Edge Trigger·················································································································44

8.5.2 Video Trigger·················································································································45

8.5.3 Alternate trigger··············································································································47

8.6 Selecting the acquisition mode ·······························································································49

8.7 Display Setting·························································································································50

8.7.1 Display Style ·················································································································50

8.7.2 Persistence···················································································································51

8.7.3 XY Mode························································································································51

8.7.4 Cymometer····················································································································52

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OWON HDS-N Series Handheld DSO & DMM Contents

6

8.8 Waveform Saving Setups ········································································································52

8.8.1 Waveform Saving Setups in normal mode········································································52

8.8.2 Waveform Saving Setups in FFT mode ············································································54

8.9 Function Setting Menu ···········································································································55

8.10 Making Automatic Measurements·······················································································55

8.11 Setting the Cursor Measurements························································································57

8.11.1 Setting the cursor measurement in normal mode ····························································57

8.11.2 Setting the cursor measurement in FFT mode ································································60

8.12 Autoscale ································································································································61

8.13 Record ····································································································································63

8.14 Using FFT ······························································································································66

8.15 System State Menu ················································································································72

8.15.1 Real time clock···········································································································73

8.16 Setting of Time Base Mode ···································································································73

8.17 Data Transmission·················································································································75

9. TROUBLE SHOOTING····································································· 76

10. APPENDIX························································································· 77

10.1 Appendix A: Specifications···································································································77

10.1.1 Oscilloscope ···············································································································77

10.1.2 Meter····························································································································79

10.1.3 General Specifications·······························································································81

10.2 Appendix B: Maintenance and Cleaning ············································································82

10.2.1 Maintenance···············································································································82

10.2.2 Storage of Oscilloscope·····························································································82

10.2.3 Replacing the Lithium Battery Unit···········································································82

OWON HDS-N Series Handheld DSO & DMM 1-Declaration of Conformity

1. Declaration of Conformity

1.1 Declaration of Conformity

HDS-N Series Handheld Digital Storage Oscilloscope & Multimeter

Manufacturer: Fujian Lilliput Optoelectronic Technology Co., Ltd.

Statement of Conformity

Base on the result using appropriate standards, the product is in conformity with

Electromagnetic Compatibility Directive 2004/108/EC

Low Voltage Directive 2006/95/EC

Sample tests

Standards used:

EN61010-1：2001（2nd edition）

Safety Requirements for Electrical Equipment for Measurement, Control, and

Laboratory use-part 1: General Requirements

EN61326-1：2006

Electrical Equipment for Measurement, Control and Laboratory use-EMC

Requirements-part 1: General Requirements

EN61000-3-2：2000+A2：2005

Electromagnetic Compatibility (EMC)-part 3: Limits-Section 2: Limits for Harmonic

Current Emissions (Equipment Input Current less than/equal to 16A per phase)

EN61000-3-3：1995+A1：2001

Electromagnetic Compatibility (EMC)-part 3: Limits-Section 3 Limitation of Voltage

Fluctuations and Flicker in Low-Voltage Supply systems for Equipment with Rated

Current less than or equal to 16A

The tests have been performed in typical configuration.

This conformity is indicated by the symbol CE, i.e. "Conformite Europeenne".

1

OWON HDS-N Series Handheld DSO & DMM 1-Declaration of Conformity

1.2 Package Contents

See the picture below. This picture is only for your reference. If any discrepancy

found between certain picture and product, please look the actual product.

# Description Standard Optional

1 Oscilloscope and Battery ●

2 AC-DC adapter ●

Oscilloscope Probe × 2 (grey) ● 3

Multimeter test lead × 2 (black and red) ● 4

5 USB Mass Storage connect cable ●

6 Extension module for small capacitance measurement ●

7 Probe adjustment tools ●

8 USB communication cable or RS-232C communication cable ●

9 User Manual ●

10 CD-ROM (software) ●

11 Hard carrying case ●

12 Soft carrying case ●

13 the output terminal of 1KHz 5V square-wave test signal ●

Figure 1: Digital Oscilloscope Parts

2

OWON HDS-N Series Handheld DSO & DMM 2-Safety information

2. Safety Information

In order to ensure the correct using and the best efficient service, please carefully read this user's

manual.

2.1 Safety Symbols and Terms

2.1.1 Safety Symbols

These symbols may appear in this manual or on the instrument.

Warning: "Warning" identifies conditions and actions that pose hazards to the users.

Caution: "Caution" identifies conditions and actions that may damage the product or

other properties.

DANGER:

Hi

g

h

Vo

l

tage

Refer to the

Manual

Protective

Conductor

Terminal

Chassis

Ground

Earth (gr

Term

ound)

inal

2.1.2 Safety Terms.

The following terms may appear on the instrument:

Danger: The term "Danger" is used in this manual to indicate that when you read this

mark, personal injury may be caused to you immediately.

Warning: The term "Warning" is used in this manual to indicate that when you read this

mark, personal injury may not be caused to you immediately, but you need to

be cautionary.

Notice: The term "Notice" is used in this manual to indicate that damages may be

caused on this product or other properties.

2.2 General Safety Information

Carefully read the following safety information in order to avoid any personal injury and damage

on this product or any products connected with it. This product can only be used in the specified

3

OWON HDS-N Series Handheld DSO & DMM 2-Safety information

applications to prevent any possible dangers.

Warning:

To avoid fire or electrical shock, please use proper power adapter. Use only the power

adapter appointed by the manufacturer and subject to approval of being used in the user's

country.

Warning:

The two channels of the oscilloscope are non-isolated electrically. The channels should adopt

common basis during measuring. To prevent short circuits, the 2 probe ground must not be

connected to 2 different non-isolated DC level.

Warning:

The channels should adopt common basis during measuring. To prevent short circuits, the 2

probe ground must not be connected to 2 different non-isolated DC level.

The diagram of the oscilloscope ground wire connection:

Ground Clip

Signal Input

Electrical Outlet

Probe Oscilloscope AC Adapter

The diagram of the ground wire connection when the battery-powered oscilloscope is

connected to the AC-powered PC through the ports:

Ground Clip

Signal Input

Oscilloscope

(Battery-power) PC Electrical Outlet

Probe

USB/COM Cable

It is not allowed to measure AC power when the oscilloscope is AC powered through the

adapter, or when the battery-powered oscilloscope is connected to the AC-powered PC

through the ports.

Warning:

To avoid fire or electrical shock if a test tool input is connected to more 42V peak (30Vrms)

or on circuits of more than 4800VA:

● Use only insulated voltage probes, test leads and adapter supplied with the test tool, or

indicated by OWON as suitable for the Oscilloscope & Multimeter.

● Before use, inspect voltage probes, test leads and accessories for mechanical damage and

replace when damaged.

● Remove all probes, test leads and accessories that are not in use.

4

OWON HDS-N Series Handheld DSO & DMM 2-Safety information

5

● Always connect the power adapter first to the AC outlet before connecting it to the

Oscilloscope & Multimeter.

● Do not apply voltages that differ more than 400 V from earth ground to any input when

measuring in a CAT Ⅱ environment.

● Do not apply voltages that differ more than 400 V from each other to the isolated inputs

when measuring in a CAT Ⅱ environment.

● Do not apply input voltages above the rating of the instrument Use caution when using

1:1 test leads because the probe tip voltage will be directly transmitted to the

Oscilloscope & Multimeter.

● Do not use exposed metal BNC or banana plug connectors.

● Do not insert metal objects into connectors.

● Always use the Oscilloscope & Multimeter only in the manner specified.

● Voltage ratings that are mentioned in the warning are giver as limits for "working

voltage". The represent V ac rms (50-60Hz) for AC sine wave applications and as V dc

for DC applications. Overvoltage Category Ⅱ refers to local level , which is applicable

for appliances and portable equipment .

Only qualified technical personnel are permitted to perform maintenance.

Pay attention to the nominal values of all terminals: To avoid fire or electric shock, please keep

a watchful eye on all nominal values and marks specified for this product. Before any connection

performed on this product, carefully read the user's manual of the product for further information

of nominal values.

No operation is allowed without the instrument cover plate: If the cover plate or panel has

been removed, do not perform any operation on this product.

No touch is allowed on bare conductors: When the product is powered on, do not touch any bare

joints or parts of the scope meter.

Operation is prohibited in case of any undetermined failure: When in doubt any damage on

this product, consult the qualified personnel for checking on it.

Keep ventilation in good condition: Refer to the user manual for detail installation instructions

in order to fix this product correctly and provide it with good ventilation conditions.

No operation is allowed under a humid environment.

No operation is allowed under an explosive environment.

Keep clean and dry on the product surface.

The method which stipulated according to the factory does not use the equipment, possibly can

damage the protection which the equipment provides.

OWON HDS-N Series Handheld DSO & DMM 3-General Characteristics

3. General Characteristics

Oscilloscope

 2 in 1 (Multimeter function support);

 Record length of 6,000 points for each channel;

 Reading-out with the cursor;

 Twenty automatic measurement functions;

 Autoscale function;

 Color liquid crystal display of high resolution and high contrast with

adjustable back light;

 Storage and call-out of waveforms;

 Automatic setting function provided capable of fast setting;

 Multiple-waveform calculation function;

 Implementation of detecting the average and peak values of the waveform;

 Edge, video and alternate triggering function;

 RS232 or USB communication ports;

 Multiple Language User Interface.

Multimeter

 3 3/4 digits;

 Volts, Amps, Ohms, Diode, Capacitance, Continuity measurement;

 10A maximum amplitude;

 Isolated inputs between oscilloscope and multimeter.

6

OWON HDS-N Series Handheld DSO & DMM 4-Performing the General Inspection

4. Performing the General Inspection

4.1 Performing the General Inspection

When you have got a new HDS-N series oscilloscope, it is suggested that you should perform a

general inspection on the instrument according to the following steps.

4.1.1 Check whether there is any Damage on it Due to Transportation

If the packing boxes or foam cushions are found in serous damage, keep them in a proper place till

the complete instrument and accessories have passed the electrical and mechanical tests.

4.1.2 Make a Check on Accessories

The accessory list has been described in the picture of Digital Oscilloscope Parts of this manual.

You can make a check and find whether there is any accessory loss with reference to the

Appendix. In case of any accessory loss or damage, consult the OWON dealer responsible for

such a business or the local office of OWON.

4.1.3 Make a Check on the Complete Instrument

If the instrument is damaged in its appearance or it fails in normal operation or performance test,

consult the OWON dealer responsible for such a business or the local office of OWON. If the

instrument is damaged due to transportation, keep the packing in a proper place and consult the

transportation department and the OWON dealer responsible for such business, who will provide

an instrument replacement or maintenance.

7

OWON HDS-N Series Handheld DSO & DMM 5-Input Connections

5. Input Connections

5.1 Input Connections

5.1.1 Input connections

See the following Figure 2:

Figure 2：Input connections

Description:

1. The power adapter is supplied for AC power supply and battery recharging.

2. Multimeter test lead.

3. Multimeter input jacks, including four circular banana jacks. The first jack measuring the

current 2 A-10A, the second jack on the current Measurement, the third COM ground input,

and the fourth measuring voltage, resistance, Capacitance input.

4. Oscilloscope probes.

5. Oscilloscope channel inputs: the upper one is for Channel 1 (CH1), while the lower one is for

Channel 2 (CH2).

6. The output terminal of 1KHz/5V square-wave test signal.

8

OWON HDS-N Series Handheld DSO & DMM 5-Input Connections

5.1.2 The connection of 1KHz/5V Square-wave test signal

At the left side of the oscilloscope, it is a port for testing 1 KHz/5V square-wave

signal which is used to adjust the probe, shown as Fig.3

Fig.3. The connection of Square-wave test signal

5.2 Front Panel and Keys Overview

See the following Figure 4:

9

OWON HDS-N Series Handheld DSO & DMM 5-Input Connections

Figure 4：Front Panel

Description:

1. AC adapter Port

2. RS-232C Port.

3. USB Port.

4. USB Mass Storage Port.

5. Power switch.

6. F1～F5: Switch or Adjust options for each menu.

10

OWON HDS-N Series Handheld DSO & DMM 5-Input Connections

11

7. AUTO SET: Under DSO mode, automatically selects the horizontal scales, vertical scale, and

trigger level according to the input signal.

8. COPY: Press to save the waveform data into the USB Mass Storage Device.

9. ▲ (red): Adjust voltage scale or vertical position in Channel 1.

10. VOLTS POSITION (red): Switch between voltage scale and vertical position in Channel 1.

11. ▼ (red): Adjust voltage scale or vertical position in Channel 1.

12. ▲ (blue): Adjust voltage scale or vertical position in Channel 2.

13. VOLTS POSITION (blue): Switch between voltage scale and vertical position in Channel 2.

14. ▼ (blue): Adjust voltage scale or vertical position in Channel 2.

15. RUN/STOP: key for running or stopping the operation

16. LIGHT: Light switch.

17. DMM/OSC: Operation mode switching key between oscilloscope and multimeter.

18. MENU ▲: Choose the upper item on the menu list.

19. MENU: Show / Hide the menu

20. MENU ▼: Choose the lower item on the menu list.

21. OPTION: the key for DSO setting and combines with four arrow keys. Then to set main time

base, trigger horizontal position and trigger vertical position. Furthermore the keys possible to

adjust the display multiplying factors of M waveform (CHMath Volts/Div ) and display

vertical position (CHM Zero) during waveform calculation and to adjust cursor 1 (V1 or T1)

and cursor 2 (V2 or T2) position during cursor measurement.

22. ▲ (yellow): Oscilloscope display upward adjustment key.

23. ▼ (yellow): Oscilloscope display downward adjustment key.

24. ► (yellow): Oscilloscope right-direction adjustment key.

25. ◄ (yellow): Oscilloscope left-direction adjustment key.

26. A: Selects DMM current measurement

27. V: Selects DMM voltage measurement

28. R: Selects DMM impedance, diode, continuity and capacitance measurement

29. SET: convert AC and DC during measure current or voltage in Multi-meter; convert

resistance, diode, on-off and capacitance measure during resistance measuring.

OWON HDS-N Series Handheld DSO & DMM 6-Using the Oscilloscope

6. Using the Oscilloscope

6.1 About this Chapter

This chapter provides a step-by-step introduction to the scope functions. The introduction does not

cover all of the capabilities of the scope functions but gives basic examples to show how to use the

menus and perform basic operations.

6.2 Powering Up the Oscilloscope

Connect oscilloscope to AC power via AC-DC adapter as shown in Figure 1. (The oscilloscope

may still work with built-in Li-ion battery even without AC power supply).

Turn the oscilloscope on by pressing down the power on/off key .

The instrument then performs self checking after power on. A greeting window and a sentence

"Press any key to continue." will display on the screen when the system finishes self checking.

The users can press any key to enter the measuring function.

The oscilloscope is powered up in its last setup configuration.

6.3 Oscilloscope Operation Window

See the following figure 5:

Figure 5: Oscilloscope Operation Window

12

OWON HDS-N Series Handheld DSO & DMM 6-Using the Oscilloscope

Description:

1. Battery electric quantity indicating symbols, including , , and .

2. Auto measurement window 1, in which "f "means frequency, "T" means cycle, "V" means

the average value, "Vp" the peak-peak value ,"Vk" the root-mean-square value,. "Ma" the

maximum amplitude value, "Mi" the minimum amplitude value, "Vt" the Voltage value of

the waveform's flat top value, "Vb" the Voltage value of the waveform's flat base, "Va" the

amplitude value, "Os" the overshoot value, "Ps" the Preshoot value, "RT" the rise time value,

"FT" the fall time value, "PW" the +width value, "NW" the -Width value, "+D" the +Duty

value, "-D" the -Duty value, "PD" the DelayA B value and "ND" the DelayA B

value.

3. Auto measurement window 2.

4. The pointer indicates the horizontal triggering position.

5. This reading gives the Time Difference between the horizontal triggering position and the

screen centerline. It reads zero when the pointer is in the center of the screen.

6. The trigger state indicates the following information.

Auto: The oscilloscope is working in the automatic mode and displaying the waveform

under the non-trigger state.

Trig'd: The oscilloscope has detected a trigger and collecting the information generated

after the trigger.

Ready: All pre-triggered data have been captured and the oscilloscope has been ready to

receive trigger signals.

Scan: The oscilloscope can gather and display the waveform data continuously in scanning

mode.

Stop: The oscilloscope has stopped collecting the waveform data.

7. Red and blue index display triggers vertical position during alternate trigger and triggers

index become green when it reaches edge trigger or video trigger.

8. A hidden-style menu: With the MENU key pressed, you can view or hide the menu.

9. Menu setting options: There are different setting options for different menus.

10. It reads the value of trigger voltage level.

11. The display shows the trigger signal source.

12. The reading gives the value of primary time base.

13. These graphics present the coupling modes of channel 2(CH2). The graphic "～" indicates

AC, the graphic "－" indicates DC, the graphic " " indicates GND.

14. This reading shows the vertical Voltage Unit Scale of CH2.

13

OWON HDS-N Series Handheld DSO & DMM 6-Using the Oscilloscope

15. These graphics show the coupling mode of CH1, among which the graphic "～" express

indicates AC, the graphic "－" indicates DC, the graphic " " indicates GND.

16. This reading shows the vertical Voltage Unit Scale of CH1.

17. The blue pointer gives the grounding datum point of the waveform on CH2, which is the zero

position of CH2. No display of this pointer indicates that the channel has not been opened.

18. OPTION operation prompt: There are different prompts for different OPTION operations.

19. Waveform display area. Red waveform represent CH1, blue waveform represent CH2.

20. The red pointer gives the grounding datum point of the waveform on CH1, which is the zero

position of CH1. No display of this pointer indicates that the channel has not been opened.

6.4 Menu Description

The following example shows how to use the tool's menus to select a function, as shown in the

following figure.

1. Press the MENU key to display the Function Menu on the right of the screen and the

corresponding optional settings on the bottom. Press MENU again will hide the Function

Menu.

2. Press the MENU ▲ or MENU ▼ key to select different function menus.

3. Choose one key from F1 to F5 and press it to change function setting.

See the following figure 6:

Figure 6: the Tool's Menus

14

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