INHAOS LP-2010 User manual

LP-2010
Document No.:DOC-UM-LP2010-V11-EN
Version:V1.1
Release Date:2011-3-29
Switching Amplif ier Measurement Low Pass Filter

User Manual
LP-2010
Switching Amplif ier Measurement Low Pass Filter

Dear Users,
Hello! Thank you for choosing LP-2010 Switching Amplifier Measurement Low Pass
Filter. For using the device correctly, please read this manual carefully , especially the
"Important Safety Tips" section.
If you have read the complete manual, we recommend that you keep this manual with
the device or in accessible place for inspection in the future.
The device is designed referenced to AES17-1998 specification. And it only provides
a low pass filter function similar to AES17-1998 specification. Please NOTE :The accuracy
of measurement is based on the entire system, rather than solely on this device.
Document No. DOC-UM-LP2010-V11-EN
Version V1.1
Release Dtae 2011-3-29
Introduction
Declare

1.Important Safety Tips
2. Packing List
3.Overall Structure
4.Device Schematic
5.Device Connection Diagram
6.Use Method
7.Extended Input Range
8.Technical Parameters (Chart 1)
9.Technical Parameters (Chart 2)
10.Technical Parameters (Chart 3)
11.TechnicalParameters (Chart 4)
12.Technical Parameters(Specifications/Dimension)
13.Warranty / Maintenance Record
14.FAQs
15.Notes
Contents

Thank you for choosing LP-2010 Switching Amplifier Measurement Low Pass Filter. The
device will help you debug and measure switching audio amplifier. Before using, please read this
manual carefully,especially the "Important Safety Tips" section below
1.Please strictly use the power supply attached in the device. Use non-attached power supply
may cause accidental damage or reduce the measurement accuracy.
2.Most switching audio power amplifier adopt bridged output, which means different channel
output can not have a common connection point, nor have any oftheoutput directly
connected to ground, or it may cause the amplifier circuit damage.
3.Rated input range of the device is 10Vp.Please NOTE: the input signal amplitude must not
exceed the rated input range or it may cause measurement error or damage the device. For
a wider range of measurement, please refer to the extended input range chapters.
4.The amplifier's output signal must have rated load resistor before it reaches the device, ormay
cause measurement error.
The device is designed referenced toAES17-1998 specification. And it provides a low pass filter
function similar toAES17-1998 specification .Please NOTE :The accuracy of measurement is based
on the entire system, rather than solely on this device.
Important Safety Tips

Packing List
1.INHAOS LP-2010 Low Pass Filter 1
2.User Manual 1
3.DC 9V 500mA Power Supply 1
4.BNC Tee connector 2
5.BNCto BNC AudioCable 1
6.RCAt oBNC AudioCable 1
7.Speaker Cable 2

CH A Input Positive CH B InputNegative
CH A Input Negative CH B Input Positive
CH B Analog output Power LED
CH A Analog output Power Input Socket
Overall Structure

R1/R2 used toextend the rangeof input signal,if you don't need extended input range,
skip R1/R2 (short R1/R2 ).
Equipment Schematic
Audio Analyzer

Most required cable is attached . See packing list for details.
Equipment Connection diagram

Connect the amplifier's output to the device's A / B input channels.
Please note that the amplifier output must be connected with a rated load resistor.
Connect the analog signal output of the audio analyzer to the input of under-test amplifier used
as audio test excitation signal.
Connect the A/B output channel to input of audio test equipment ,used as the input signal of the
test equipment.
If you want to monitor the output signal simultaneously (for example , one channel connected to
oscilloscope for signal observation) , please use the tee connectors attached.
If the output signal of the power amplifier under test exceeds 10Vp , please serial resistor (R1/R2)
to extend the input signal range.
Please refer to the relevant sections of this manual. Ifyou do not need to extend the input signal range,
skip R1/R2 (short R1/R2).
Use Method

For this device ,the rated input range is 10Vp.In some applications, the users need a wider input range,
so the input signal range extension is necessary.
To scale the input signal range , serial a resistor to the A/B input channel as a divider .
After the divider , the signal obtained from the Output port should be multiplied by the corresponding
factor to have the actual measured value.
1
2
3
0
9.98 K
39.92 K
1
2
5
1
0.5
0.2
10Vp
20Vp
50Vp
Output Voltage Ratio
Input Signal Range
.
R1,R2 Divide Ratio

Chart1 Level Vs Frequency
Sweep Trace Color Line Style Thick Data Axis Comment
1 1 Cyan Solid 1 Analyzer.levelA Left
1 1 Creen Solid 1 Analyzer.level B Right
Technical Parameters

Chart2 THD Vs Frequency
1 1 Cyan Solid 1 Analyzer.THD+N RatioA Left
Sweep Trace Color Line Style Thick Data Axis Comment
1 1 Creen Solid 1 Analyzer.THD+N Ratio B Right
Technical Parameters

Chart3 Level Vs Input
Sweep Trace Color Line Style Thick Data Axis Comment
1 1 Cyan Solid 1 Analyzer.levelA Left
1 2 Creen Solid 1 Analyzer.level B Right
2 1 Creen Solid 1 Analyzer.levelA Left
2 2 Cyan Solid 1 Analyzer.level B Right
Technical Parameters

Chart4 THD Vs Level
Technical Parameters

Specifications
Frequency Response
Insert Loss
High-frequency(HF) Inhibit
Maximum Input (without extension)
Channel Isolation
Distortion
Dimension
Temperature
Suitable Temperature
Storage Temperature
Humidity
Dimension
0.1dB , 10Hz to 20KHz
0.05dB , typically
> 60dB ,250KHz to 20MHz, typically
10V peak
> 90dB @ 20KHz
< 0.005% harmonic(1V 1KHz)
+5 C to + 4 0 C
-40 C to + 7 5 C
80% RH to at least +90 C
105 * 165 * 36 mm
Technical Parameters

Customer Name
Customer Email
Distributor:
Maintenance Record
Serial Number :
Date of Purchase
Warranty:
Warranty period is 1 year from the dateof purchase . We provide paid service beyond
the time.
Operation unaccordance with this manual ,wrong connection ,using non-
attachment of the product , using beyond the ratings specified , any damagecaused by
the conditions above will lead topaid service.
Users of this product are strictlyprohibited disassemble, modify,reverse . Any
product damage due to the reasonsabove will lose the warranty andthe company
reserves the right to refuse maintenance services.
Make sure the distributor fill inthe detail product serial number,purchasing data and
some other information . If theinformation is not complete,repairing is chargable.
When encounter problems in using ,please send e-mails to our company. After
confirming the product is damaged ,you can send the product backto the company for
maintenance , otherwise the product wouldbe sent back and the freightcharge is on you.
Free charge of repairing ifthe product fits the warranty termsand time. The freight
charge shipping to our companyis on you , and wepay for shipping back after repairing..
When you purchase this product, whichmeans that you have read andagree with the
warranty above .
Warranty / Maintenance Records