1. Manuals
  2. Brands
  3. Listen Manuals
  4. Measuring Instruments
  5. AmpConnect ISC
  6. User manual

Listen AmpConnect ISC User Manual

Hide thumbs Also See for AmpConnect ISC:
Table of Contents

Advertisement

Quick Links

Download this manual See also: Instruction Manual
AmpConnect ISC
User Manual
Microphone & Loudspeaker Test Interface
Listen, Inc. 580 Harrison Ave, Suite 3W, Boston, MA 02118
Tel: (617) 556-4104
PN: 8070 Rev 052417
PN: 8070 REV 092016
Sales: sales@listeninc.com
AMPCONNECT ISC USER MANUAL
AMPCONNECT ISC USER MANUAL
© COPYRIGHT 2009-2017 LISTEN, INC.
© COPYRIGHT 2009-2016 LISTEN, INC.
580 Harrison Ave, Suite 3W • Boston, MA 02118 • 617-556-4104 • Fax 617-556-4145 • www.listeninc.com
Tel: (617) 556-4104
Listen, Inc. 580 Harrison Ave, Suite 3W, Boston, MA 02118. Tel: (617) 556-4104.
Web: www.listeninc.com Sales: sales@listeninc.com Support: support@listeninc.com
AmpConnect ISC
Instruction Manual
© Copyright 2009 - 2017 Listen, Inc.
Fax: (617) 556-4145
Sound Measurements Make Sound Products
Support: support@listeninc.com
Listen, Inc. 580 Harrison Ave, Suite 3W, Boston, MA 02118
Fax: (617) 556-4145
Sales: sales@listeninc.com
Feb 2017
Web: www.listeninc.com
Web: www.listeninc.com
Support: support@listeninc.com
TM
™

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the AmpConnect ISC and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Listen AmpConnect ISC

Summary of Contents for Listen AmpConnect ISC

  • Page 1 Listen, Inc. 580 Harrison Ave, Suite 3W, Boston, MA 02118 Tel: (617) 556-4104 Fax: (617) 556-4145 Web: www.listeninc.com Listen, Inc. 580 Harrison Ave, Suite 3W, Boston, MA 02118. Tel: (617) 556-4104. Sales: sales@listeninc.com Support: support@listeninc.com Web: www.listeninc.com Sales: sales@listeninc.com Support: support@listeninc.com...
  • Page 2 Rev 052417...

  • Page 3: Table Of Contents

    Listen Software License Agreement ........
  • Page 4 AmpConnect ISC Specifications ........

  • Page 5: Listen Software License Agreement

    End-User’s computer, computer system, or at End-User’s place of business. End-User agrees to only install and use authorized, genuine and licensed versions of the Software. Installation or use of any unlicensed or illegal copies, or software based on Listen’s source code shall be deemed a material breach of this Agreement.
  • Page 6 U.S. Export Administration Act and its associated regulations, and may be subject to export or import regulations of other countries. End-User agrees to strictly comply with all such regulations and acknowl- edges that it has the responsibility to obtain licenses to export, re-export or import Software. AmpConnect ISC Instruction Manual Listen Software License Agreement...
  • Page 7 END-USER ACKNOWLEDGES THAT IT HAS READ THIS LICENSE, UNDERSTANDS IT, AND AGREES TO BE BOUND BY ITS TERMS AND CONDITIONS. Should you have any questions concerning this License, contact Licensor at the address set forth above. AmpConnect ISC Instruction Manual Listen Software License Agreement...
  • Page 8 LISTEN (30) LISTEN, Inc.( AmpConnect ISC Instruction Manual Listen Software License Agreement...
  • Page 9 “ ” www.listeninc.com/register <http://www.listeninc.com/register> LISTEN, Inc. LISTEN, Inc. 580 Harrison Ave., 580 Harrison Ave., Suite 3W, Suite 2A, Boston, MA 02118 Boston, MA 02118 AmpConnect ISC Instruction Manual Listen Software License Agreement...
  • Page 10 AmpConnect ISC Instruction Manual Listen Software License Agreement viii...

  • Page 11: Limited Warranty

    Limited Warranty LISTEN, Inc., a Massachusetts Corporation, having its principal place of business at 580 Harrison Ave, Suite 3W, Boston, MA 02118 (Manufacturer) warrants its AmpConnect ISC products (the Products) as follows: 1. Limited Warranty. Manufacturer warrants that the Products sold hereunder will be free from defects in material and workmanship for a period of one (1) year from the date of purchase.
  • Page 12 page intentionally left blank Limited Warranty AmpConnect Instruction Manual...

  • Page 13: Introduction

    AmpConnect ISC is fully controllable via SoundCheck which means that adjustments of parameters such as gain can be included in test sequences. AmpConnect ISC is easy to calibrate, easy to setup and is more immune to noise due to minimized connections. AmpConnect ISC can route/select all test signals, and contains an integral power amplifier to drive the device under test (or mouth simulator).

  • Page 14: Key Features

    Designed to operate in demanding production environments Speed Dual amplifier outputs allows the operator to test one speaker while loading another Signal routing and switching can be stored in a SoundCheck sequence to simplify test setup Introduction AmpConnect ISC Instruction Manual...

  • Page 15: Test Setup Comparison

    REMOVE COVER. NO USER-SERVICABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL. Reference (Microphone) DUT (Microphone) PUSH PUSH ™ ISC AmpConnect Digital Back Panel USB 2.0 SCM Reference Mic Loudspeaker (DUT) Figure 1-2: AmpConnect ISC simplifies the setup AmpConnect ISC Instruction Manual Introduction...
  • Page 16 Reference (Microphone) DUT (Microphone) PUSH PUSH ™ ISC AmpConnect Digital Back Panel USB 2.0 SCM Reference Mic 1 Loudspeaker 1 (DUT) Loudspeaker 2 SCM Reference Mic 2 (DUT) Figure 1-3: Example of two speaker test setup Introduction AmpConnect ISC Instruction Manual...

  • Page 17: Installation

    SoundCheck 10.11 minimum (or SoundCheck ONE) is required in order to control AmpConnect ISC™ via USB The SoundCheck computer must have an available USB 2.0 connection Note: It is recommended that AmpConnect ISC be mounted in a ventilated rack mount enclosure for proper cooling. Software Installation Important! Rockey Hardware Key only: Make sure the SoundCheck USB hardware key is not connected to the computer.

  • Page 18: Audio Device Settings

    This may be displayed as “AmpConnect ISC” or as “New HID Device”. Swapping Devices If you swap one AmpConnect ISC for a different AmpConnect ISC while SoundCheck is open: Open the SoundCheck Hardware Editor Open the AmpConnect tab...

  • Page 19: System Settings

    Figure 2-1: Select No Sounds 4. Select the Playback tab and set the default Windows playback device to the motherboard audio interface or any other device that is not part of the measurement system Figure 2-2: Playback Default AmpConnect ISC Instruction Manual Installation...

  • Page 20: Physical Installation

    Airflow around the heat sink must remain unobstructed during use DO NOT install AmpConnect inside an enclosure without a ventilation fan When installed in a rack, AmpConnects should not be installed on top of each other. Leave airspace for cooling. Installation AmpConnect ISC Instruction Manual...

  • Page 21: Hardware And Calibration

    Hardware and Calibration AmpConnect ISC acts as a complete audio interface for test and measurement with SoundCheck software. The Hardware Configuration in SoundCheck must be setup for use with AmpConnect. SoundCheck System Hardware Important! This section is for use with the full version of SoundCheck. The System Hardware Configuration in SoundCheck ONE is preset for use with AmpConnect ISC.
  • Page 22 Auto Mode. Open the System Hardware Editor from the Setup drop down on the SoundCheck main screen. Click the Import button and select AmpConnect ISC.har from the appropriate operating system folder. If AmpConnect is replacing the existing audio interface, the user can choose to overwrite all of the current input and output settings.
  • Page 23 AmpConnect ISC Hardware Configuration The AmpConnect ISC Hardware settings are included in the default steps with SoundCheck. SoundCheck 11 (and higher) will need to import the AmpConnect ISC settings as shown in Import Hardware Configuration on page 10. The AmpConnect.Har configuration file is preset with the Inputs and Outputs that would normally be used in a SoundCheck sequence.

  • Page 24: Self Test Sequence

    SoundCheck may show a message as shown in Figure 3-6. Select OK to Re-link to connect to the new AmpConnect ISC unit. The next prompt shows that AmpConnect ISC is ready for use. Click OK to continue. Figure 3-6: Re-link Notice Note: There are two versions of the AmpConnect Self Test sequence.

  • Page 25: Amplifier Calibration

    The gain of AmpConnect is fixed at 26.4 dB. This is the value in the stock System Calibration Configuration. The mono power amplifier in AmpConnect ISC can be calibrated in SoundCheck if a more precise value is required. Since it is a mono amp, only one channel is required for calibration.
  • Page 26 The AmpConnect Amplifier Calibration sequence creates a correction curve and updates the sensitivity. The sequence will automatically configure the AmpConnect ISC front panel settings for calibration. 1. In SoundCheck, open System Calibration from the Setup drop down menu on the SoundCheck main screen.
  • Page 27 Sound Pressure Level: 94.00 dB ± 0.20 dB Frequency: 1000 Hz ± 0.1% 4. Note the gain or attenuation value, in dB, from the AmpConnect ISC channel settings that the reference microphone is connected to. Enter this value in the Pre-Gain numeric field of the Calibration Step.
  • Page 28 Hardware and Calibration AmpConnect ISC Instruction Manual...

  • Page 29: Front Panel Functions

    AmpConnect ISC™ Figure 4-1: Front Panel AmpConnect ISC™ can be used as a stand-alone test and measurement interface. It can also be controlled by SoundCheck using Message Steps in a test sequence. The front panel LEDs show the settings for input and output channels as well as signal level and signal state.
  • Page 30 The initial power up default settings from Listen, Inc., are those most commonly used for loudspeaker testing: Digital I/O: all Bits are Low (LEDs off).

  • Page 31: Input - Physical Inputs On Rear Panel

    AmpConnect XLR input. Testing microphones that need 48 V phantom power requires an external phantom power supply. Gain Gain is variable in steps from -20 dB to +40 dB Input gains are independently variable AmpConnect ISC Instruction Manual Front Panel Functions...

  • Page 32: Output - Physical Input Routing To Internal Audio Interface

    Cannot be routed to amplifier output Quiet: Output channel is defeated (All source LEDs are set to Off). If AmpConnect ISC is accidentally disconnected from USB or if the computer is shut off, AmpConnect ISC will automatically switch to Quiet. The power amplifier outputs are also set to Off. This is to minimize transients.

  • Page 33: Amplifier

    Green indicates level is > -14 dBV out (corresponds to -40 dBV in) Yellow indicates level is > 12 V peak (about 6 dB before clipping) Red indicates level is > 17 V peak (about 3 dB before clipping) AmpConnect ISC Instruction Manual Front Panel Functions...
  • Page 34 Front Panel Functions AmpConnect ISC Instruction Manual...

  • Page 35: Rear Panel Connections

    XLR pin 2 is signal high (+), BNC center is signal high (+) XLR pin 3 is signal low (-), BNC case is signal low (-) Jumper J20/J28 Balanced vs Single Ended Jumper Settings on page 51 Figure 5-2: XLR / BNC jumper location. Inputs AmpConnect ISC Instruction Manual Rear Panel Connections...

  • Page 36: Dut (Microphone) Input

    Connects to a transducer via the binding post connectors. Note: There is only one, mono power amp channel in AmpConnect ISC. This amp channel can be switched to either Output A, Output B or A + B. Amplifier Output B Connects to a second transducer via the binding post connectors.

  • Page 37: Usb Control Via Soundcheck

    Digital I/O is only accessed by USB through SoundCheck. The following example shows how to use a Message Step in SoundCheck to control AmpConnect ISC. (AmpConnect ISC must be enabled in the Hardware Step. See Hardware Configuration on page Important! The default Message Step included with SoundCheck, “AmpConnect.MES”, is “Read...

  • Page 38: Ampconnect Message Step

    “switch closure times” associated with external devices connected to the Digital I/O of AmpConnect. Apply - Click Apply to switch AmpConnect ISC to the new settings from Configure AmpConnect without having to run the sequence. This is useful for testing the settings.

  • Page 39: Configure Ampconnect In Soundcheck 14 And Later

    After installing SC 14, prior versions of SoundCheck will not have control over the device. Additionally, the serial number of the AmpConnect ISC audio interface will not be read properly which changes the name of the device in the Hardware Editor.
  • Page 40 Configure AmpConnect In the Message Step click on Configure Listen Hardware to set the front panel settings of AmpConnect. The standard front panel controls are explained in Front Panel Functions on page Inputs Gain: -20 dB, -10 dB, 0 dB, +10 dB, +20 dB, +30 dB,...

  • Page 41: Configure Ampconnect In Soundcheck 13 And Previous Versions

    Configure AmpConnect in SoundCheck 13 and Previous Versions Click on Configure AmpConnect to set the front panel settings of AmpConnect ISC. Figure 6-7: AmpConnect ISC Message Step in SC13 Read Settings - Allows the user to update the settings of the Message Step by Reading the current settings of the AmpConnect ISC Front Panel.

  • Page 42: Custom Step Conversion

    Mute - Mute signal to headphone output Custom Step Conversion SoundCheck 9 users will need to upgrade to SoundCheck 11.x (or later) to control AmpConnect ISC. The Custom Step from SoundCheck 9 will need to be re-created as a Message Step in SoundCheck 11.x and Please use the following procedure.
  • Page 43 Figure 6-8: Channel Settings AmpConnect ISC may not show the changes. Check the settings on the Front Panel of the actual unit. When the sequence runs, AmpConnect ISC will automatically change to these settings. AmpConnect ISC Instruction Manual USB Control Via SoundCheck...
  • Page 44 AmpConnect ISC Instruction Manual USB Control Via SoundCheck...

  • Page 45: Digital I/O Connections

    The Digital I/O (DIO) of AmpConnect ISC can read external SoundCheck test sequence. DIO settings are made in an AmpConnect ISC Message Step used in the sequence. The DIO settings of AmpConnect ISC can only be accessed through a SoundCheck Message Step.
  • Page 46 A single AmpConnect step can also be created to perform both operations simultaneously. Both Bit 0 and 1 set to Write (Output) Bit 0 and 1 set to High (LEDs On) Digital I/O Connections AmpConnect ISC Instruction Manual...
  • Page 47 In the AmpConnect Message Step, you must click on the Bit LED to set the state: On = High, Off = Low. External Switch Examples The Digital I/O input of AmpConnect ISC can read the state of external TTL voltage levels and switch closures in a SoundCheck test sequence. Normally Open Switch...
  • Page 48 (Normally Closed) Bit 2 Bit 3 In this configuration, when the switch is open (footswitch depressed), the AmpConnect ISC Input will be pulled High. Bit 4 Bit 5 When the switch is closed (footswitch not depressed), the Input Bit 6 will return to Low.

  • Page 49: Ampconnect Isc Message Step

    See Step Configuration in the main SoundCheck Manual for more information. If the setting agrees with the actual status of the Input, the step will issue a "PASS" verdict. AmpConnect ISC Message Step The example sequence in Figure 7-5 shows the Message Step “Bit 4 High”...
  • Page 50 The example step is set to Read Bit 4 and the Bit is set High by clicking on the LED next to Bit 4. Click OK on both editor windows to close. Please remember to Save the sequence before you run it. Digital I/O Connections AmpConnect ISC Instruction Manual...

  • Page 51: Test Connections And Procedures

    Figure 8-1: Single Loudspeaker Test Layout The Single Loudspeaker test as shown in Figure 8-1 shows AmpConnect ISC with the following settings: Reference Mic output set to Channel 1 Bias set to Voltage Reference gain set to +10 dB (DUT input not used)

  • Page 52: Two Loudspeaker Test

    Output Channels must be set to Z-High so that the 1 Ω reference resistor will increase the load as seen by AmpConnect ISC. This will reduce the output power of AmpConnect ISC proportionately by the ratio of the reference resistor divided by the “loudspeaker plus reference resistor” impedance.

  • Page 53: Microphone Test

    Channel 2 Figure 8-4: Microphone Test Layout The Microphone test setup in Figure 8-4 shows how AmpConnect ISC is setup with a DUT Mic. Reference Mic output set to Channel 1 Bias set to Voltage Gain set to +10 dB...

  • Page 54: User Setup Notes

    Output B Bit 1 Voltage -10dB Channel 1 Bit 0 IEPE -20dB 1V Sine Level Panel Level Channel 2 Enable Bias Gain Source Select Digital I/O Setup Setup Am pConnect ISC™ Channel 2 Test Connections and Procedures AmpConnect ISC Instruction Manual...

  • Page 55: Headphone Testing

    Digital I/O AmpConnect ISC™ Channel 2 Settings Figure 9-1: Headphone Test With AmpConnect ISC Required Changes The Sequence Note that accompanies the headphone sequence requires different hardware. A Message Step must also be added to the beginning of the sequence to set the AmpConnect Headphone output to it’s maximum level.

  • Page 56: Setup & Calibration

    Hardware Head and Torso Simulator (B&K Type 4128 or equivalent) SoundConnect 2 Microphone Power Supply with Lemo Option (Listen p/n 4025) required for Lemo connector microphones using 200 V polarization voltage AmpConnect ISC (Listen p/n 4042) Software SoundCheck 10.11 or later (SoundCheck 14 or later to control SoundConnect 2 via Message Steps...

  • Page 57: Ampconnect Front Panel Settings

    SoundCheck settings. This is to prevent hearing damage due to high sound pressure levels. Note: Headphones with impedances greater than 50 Ω may need to be tested using the AmpConnect power amp output. Refer to AmpConnect ISC Specifications on page AmpConnect Instruction Manual Headphone Testing...

  • Page 58: Ampconnect Message Step

    AmpConnect Message Step AmpConnect ISC can be controlled with a Message Step in the SoundCheck test sequence. The example in Figure 9-3 shows the settings used in this example. This is the first step in the sequence. All controls are the same as the front panel controls noted in...

  • Page 59: Sequence Results

    Sequence Results The Display of the example sequence is shown in Figure 9-4. Frequency Response Left & Right Left/Right Tracking Distortion Sensitivity Left & Right Figure 9-4: Sequence Display AmpConnect Instruction Manual Headphone Testing...
  • Page 60 page intentionally left blank AmpConnect Instruction Manual Headphone Testing...

  • Page 61: Ampconnect Isc Block Diagram

    AmpConnect ISC Block Diagram Figure 10-1: AmpConnect ISC Block Diagram AmpConnect ISC Instruction Manual AmpConnect ISC Block Diagram...

  • Page 62: Block Diagram Explanations

    Block Diagram Explanations Signal routing controlled from AmpConnect ISC front panel or from SoundCheck Message Step. Ref and DUT Input signals routed to Internal Audio Interface inputs Adjustable Gain for Ref Bias and DUT inputs only Ref Mic Input Gain: 0, +10 or +20dB...

  • Page 63: Internal Jumper Settings

    Adding the jumper across pins 2 & 3 of J20 and J28 will set the XLR inputs to Single Ended. The jumper connects pin 3 (-) to pin 1 (Gnd) on the XLR connectors. AmpConnect ISC ships with J20 & J28 jumpers OFF by default. Open the AmpConnect case if you need to verify the current jumper settings.
  • Page 64 AmpConnect ISC Block Diagram AmpConnect ISC Instruction Manual...

  • Page 65: Ampconnect Isc Specifications

    Z-High setting 1 V/A, + 1 % Z-Low setting 0.1 V/A, + 1 % Digital I/O 8 Bit any Bit may be configured for input or output Outputs +5 V/GND 10 mA (max) each AmpConnect ISC Instruction Manual AmpConnect ISC Specifications...
  • Page 66 Audio Interface provides audio in/out to PC (USB 1.1 Audio). All front panel functions USB controllable. Physical Dimensions (no rack mount ears) 17” W (43.2cm), 3.5” H (8.9cm) (2U), 11” D (27.9cm) Weight 7 lbs (3.2 kg) Power 85 - 264 VAC 50/60 Hz, 150 Watts (max) AmpConnect ISC Specifications AmpConnect ISC Instruction Manual...

  • Page 67: Index

    INDEX Level ................15 ..............27 AmpConnect ........25, 26, 37, 43, 46 Message Step AmpConnect ISC Message Step ........37 Microphone Calibration ..........15 ........... 3 AmpConnect ISC Test Setup ....15 Microphone manufacturer’s specifications ........ 9 AmpConnect Setup in Windows XP ...............46...
  • Page 68 INDEX AmpConnect ISC Instruction Manual...
  • Page 69 Rev 052417 Contact Information Contact the Listen office at 617-556-4104, Monday thru Friday, between 9 AM and 5 PM EST. or email: Sales - sales@listeninc.com Technical Support - support@listeninc.com Listen Website: www.listeninc.com/ © Listen, Inc 2009 - 2017. All rights reserved.

Table of Contents