multicomp MP7505 Series User manual

i
MP7505 Series Dual-Channel
Arbitrary Waveform Generator
User Manual

ii
Table of Contents
1.General Safety Requirement .................................................................1
2.Safety Terms and Symbols.....................................................................2
3.General Inspection................................................................................3
4.Quick Start ............................................................................................4
Front Panel Overview ................................................................................................................4
Rear Panel Overview .................................................................................................................6
Foot Stool Adjustment ..............................................................................................................7
Power On...................................................................................................................................7
User Interface............................................................................................................................8
5.Panel Operation ....................................................................................9
Channel Setting .........................................................................................................................9
Select the channel for configuration .................................................................................9
Turn on/off channel output...............................................................................................9
Inter-channel.....................................................................................................................9
Waveform Setting......................................................................................................................9
Output Sine Wave ...........................................................................................................10
Set the frequency/period........................................................................................10
Set the amplitude....................................................................................................11
Set the offset ...........................................................................................................11
Set the high level.....................................................................................................11
Set the low level......................................................................................................12
Set the start phase ..................................................................................................12
Output Square Wave .......................................................................................................12
Output Ramp Wave.........................................................................................................12
Set the symmetry ....................................................................................................13
Output Pulse Wave..........................................................................................................14
Set the pulse width/duty cycle................................................................................15
Set the rising/falling time........................................................................................17
Output Noise Wave .........................................................................................................17
Output Arbitrary Wave....................................................................................................17
Select build-in wave (including DC).........................................................................18
Output Harmonic Wave...................................................................................................23
Harmonic wave function overview .........................................................................23
Set the Fundamental Wave Parameters..................................................................24
Select the harmonic type ........................................................................................24
Set the harmonic order ...........................................................................................24
Set the harmonic amplitude of each order .............................................................25
Set the harmonic phase of each order....................................................................25

iii
Output the Modulated Waves.................................................................................................25
AM (Amplitude Modulation)...........................................................................................26
DSB-AM (Double-Sideband AM) .....................................................................................27
FM (Frequency Modulation) ...........................................................................................28
PM (Phase Modulation) ..................................................................................................30
PWM (Pulse Width Modulation).....................................................................................31
ASK (Amplitude Shift Keying) ..........................................................................................32
FSK (Frequency Shift Keying)...........................................................................................34
PSK (Phase Shift Keying)..................................................................................................35
3FSK (3 Frequency Shift Keying) ......................................................................................36
4FSK (4 Frequency Shift Keying) ......................................................................................38
BPSK (Binary Phase Shift Keying).....................................................................................39
QPSK (Quadrature Phase Shift Keying)............................................................................40
OSK (Oscillation Shift Keying) ..........................................................................................41
SUM (Sum Modulation)...................................................................................................43
Generate Sweep (Sweep)........................................................................................................44
Generate Burst (Burst) ............................................................................................................45
Set N-Cycle Burst.............................................................................................................46
Set Gated Burst ...............................................................................................................47
Counter ...................................................................................................................................49
Utility Function Setting ...........................................................................................................50
Display Settings ...............................................................................................................50
Brightness Control...................................................................................................50
Screen Saver ............................................................................................................50
Separator.................................................................................................................50
Date .........................................................................................................................51
Contrast ...................................................................................................................51
CH1/2 Settings..................................................................................................................51
Sync .........................................................................................................................51
Load .........................................................................................................................52
I/O Setup .........................................................................................................................52
USB Device Type......................................................................................................53
Network Setting ......................................................................................................53
System Settings ...............................................................................................................54
Language .................................................................................................................54
Beeper.....................................................................................................................54
Clock Source ............................................................................................................54
Clock Output............................................................................................................54
Firmware Update ....................................................................................................55
Edit the Arbitrary Wave (Edit).................................................................................................55
File Store System (Store).........................................................................................................56
Save the current arbitrary wave......................................................................................56
Bring up arbitrary wave files in internal/external memory.............................................57
Erase waveforms from memory ......................................................................................58
Save/recall Instrument Settings ......................................................................................58

iv
Preset Settings (Preset)...........................................................................................................58
Restore to the factory setting..........................................................................................59
Restore to the user setting..............................................................................................63
Power-on setting .............................................................................................................63
Use Build-in Help (Help) ..........................................................................................................63
6.Communicate with PC......................................................................... 64
Using USB Port.........................................................................................................................64
Using LAN Port ........................................................................................................................65
Connect Directly..............................................................................................................65
Connect through a Router...............................................................................................65
7.Troubleshooting .................................................................................. 67
8.Specification ....................................................................................... 68
Waveforms ......................................................................................................................68
Frequency Characteristics ...............................................................................................68
Amplitude Characteristics ...............................................................................................69
Signal Characteristics.......................................................................................................69
Modulation Characteristics .............................................................................................71
Sweep Characteristics .....................................................................................................73
Burst Characteristics........................................................................................................74
Counter Specifications ....................................................................................................74
Input/Output Characteristics ..........................................................................................74
General Specifications.....................................................................................................75
9.Appendix............................................................................................. 76
Appendix A: Accessories..........................................................................................................76
Appendix B: General Care and Cleaning..................................................................................76

MP7505 Series User Manual
1
1. General Safety Requirement
Before any operations, please read the following safety precautions to avoid any
possible bodily injury and prevent this product or any other products connected from
damage. In order to avoid any contingent danger, this product must only be used
within the ranges specified.
Only the qualified technicians can implement the maintenance.
To avoid Fire or Personal Injury:
Use Proper Power Cord. Use only the power cord supplied with the product and certified
to use in your country.
Product Grounded. This instrument must be grounded through the power cord earth
conductor. To avoid electric shock, the grounding conductor must be earthed. The
product must be grounded properly before any connection with its input or output
terminal.
Limit operation to the specified measurement category, voltage, or amperage ratings.
Check all Terminal Ratings. To avoid fire or shock hazard, check all ratings and markers
on the instrument. Refer to the user's manual for more information about ratings before
connecting the instrument. Do not exceed any of ratings defined in the following section.
Do not operate without covers. Do not operate the instrument with covers or panels
removed.
Use Correct Fuse. Use only the specified type and rating fuse for this instrument.
Avoid exposed circuit. Do not touch exposed junctions and components when the
instrument is powered on.
Do not operate if in any doubt. If you suspect damage occurs to the instrument, have it
inspected by qualified service personnel before further operations.
Use your instrument in a well-ventilated area. Inadequate ventilation may cause an
increasing of temperature or damages to the instrument. 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.
Keep instrument surfaces clean and dry.

MP7505 Series User Manual
2
2. Safety Terms and Symbols
Safety Terms
Terms in this Manual. The following terms may appear in this manual:
Warning: Warning indicates the conditions or practices that could result in injury
or loss of life.
Caution: Caution indicates the conditions or practices that could result in damage
to this product or other property.
Terms on the Product. The following terms may appear on this product:
Danger: It indicates an injury or hazard may immediately happen.
Warning: It indicates an injury or hazard may be accessible potentially.
Caution: It indicates a potential damage to the instrument or other property might occur.
Safety Symbols
Symbols on the Product. The following symbol may appear on the product:
Hazardous Voltage Refer to Manual
Protective Earth Terminal Chassis Ground
Test Ground

MP7505 Series User Manual
3
3. General Inspection
After you get a new generator, it is recommended that you should make a check on the
instrument according to the following steps:
1. Check whether there is any damage caused by transportation.
If it is found that the packaging carton or the foamed plastic protection cushion has
suffered serious damage, do not throw it away first till the complete device and its
accessories succeed in the electrical and mechanical property tests.
2. Check the Accessories
The supplied accessories as described in Appendix A: Accessories of this manual. You can
check whether there is any loss of accessories with reference to this description. If there
is any accessory lost or damaged, please get in touch with the distributor of MULTICOMP
PRO responsible for this service or the MULTICOMP PRO's local offices.
3. Check the Complete Instrument
If it is found that there is damage to the appearance of the instrument, or the instrument
does not work normally, or fails in the performance test, please get in touch with the
MULTICOMP PRO's distributor responsible for this business or the MULTICOMP PRO's
local offices. If there is damage to the instrument caused by the transportation, please
keep all the packaging. With the transportation department or the MULTICOMP PRO's
distributor responsible for this business informed about it, a repairing or replacement of
the instrument will be arranged by the MULTICOMP PRO.

MP7505 Series User Manual
4
4. Quick Start
Front Panel Overview
16
4
9
17
12
7
6
13 12 10
5
11
8
3
14
15
Figure 4-1: Front Panel overview
1 LCD Display the user interface
2
Menu selection
keys
Includes 6 keys to activate the corresponding menu
3Mode keys Mod: Output the modulated waveform
Sweep: Scan the sine, square, ramp or arbitrary waveforms
Burst: Generate the sine, square, ramp, pulse or arbitrary
burst
4Rotary control Change the currently selected value, also used to select the
character in the soft keyboard when the file location or file
name is entered.
When inserting a USB flash drive, press the rotary control to
save the current display screen to the folder of the USB flash
drive in BMP image format.

MP7505 Series User Manual
5
5Direction key Move the cursor of the selected parameter
6Operation keys Counter: Enter the counter interface
Edit: Enter the wavform edit interface
Preset: Enter the preset menu, set the reset parameter or
power-on parameter.
Utility: Set the utility function
Store: Save/load arbitrary waveform or instrument setup
Help:
To get contextual help for any front panel button or
menu softkey, press the button and then press the button for
which you need help.
7Number
keypad
Input the parameter
8CH2 Function
keys
CH2 button: After entering the waveform interface and
selecting the CH2 (the backlight of the button is on
), the
waveform and parameters of CH2 can be set after selection.
Blue Trigger button: CH2 manual trigger button. In sweep or
burst mode, when the trigger source is selected as “Manual”,
each press of this button will initiate a trigger.
On/Off button: Turns the output of the CH2 channel on or off.
When the output is turned on, the backlight of the button
lights up.
9
CH2 Sync
When Utility → CH1/2 Set → CH2 Sync turned on, this
terminal outputs a synchronization message that matches the
current configuration of CH2.
10
CH2 Out
Output CH2 signal
11
⇌button
Display the inter-channel menu. You can copy the parameters
of one channel to the other, synchronize the frequency or
amplitude, and align the phase of two channel signals.
12
CH1 Out
Output CH1 signal
13
CH1 Sync
When Utility → CH1/2 Set → CH1 Sync
turned on, this
terminal outputs a synchronization message that matches the
current configuration of CH1.
14
CH1 Function
keys
CH1 button: After e
ntering the waveform interface and
selecting the CH1 (the backlight of the button is on
), the
waveform and parameters of CH1 can be set after selection.

MP7505 Series User Manual
6
Yellow Trigger button: CH1 manual trigger button. In sweep
or burst mode, when the trigger source i
s selected as
“Manual”, each press of this button will initiate a trigger.
On/Off button: Turns the output of the CH1 channel on or off.
When the output is turned on, the backlight of the button
lights up.
15Waveform
Selection area
Includes: Sine , Square , Ramp , Pulse ,
Noise , Arb Wave , Harmonic Wave
. When a
waveform is selected, the corresponding backlight is lit.
16USB interface Connect with external USB devices, e.g. U disk.
17Power button Turn on/off the waveform generator.
Rear Panel Overview
Figure 4-2: Rear Panel Overview
1
Retractable handle
2
Air vents
3
AC input connector
AC input connector
4
Fuse Container
The place to install the fuse
8
7
6
10
9
5
3
4
1
2