One Master Amplifier for Series Systems ....................... 6 All Master Amplifiers for Parallel Systems ...................... 6 Use only 7000-Series Amplifiers of the same Model Number ..............6 Use Correct Wiring ............................6 When Constructing Output Wiring, Use These Basic Criteria ................ 6 Operate with Safety in Mind ..........................
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7000-SERIES MULTI-AMP CONFIGURATION GUIDE List of Figures Figure 1.1 – Maximum Continuous Output in 7000-Series Multi-amp Systems ..........4 Figure 3.1 – Two in Series: Single-Ended vs. Differential..................7 Figure 3.2 – SIM-BNC-OPTOC card jumper locations ..................... 7 Figure 3.3 – 7224 Amplifier Access Panel Screw Locations ................9 Figure 3.4 –...
CAUTION graphics are used to highlight certain topics that require extra precaution. Overview A single 7000-Series amplifier can provide continuous output current or voltage only up to a certain level. If you need increased output above those levels, you can combine multiple amplifiers into a system that can provide increased voltage or current.
7224 BAL RES KIT also contains the shunt required to defeat the amplifier’s external level control. NOTE: AE Techron Ballast Resistor Kits are sold as parts kits only. Buyers are responsible for installing the Ballast Resistor Kit in a way that meets local Safety requirements.
Use only 7000-Series Amplifiers of the same Model Number Use only AE Techron 7000-Series amplifiers of the same model to construct these multiple amplifier systems. You CANNOT combine different models of 7000-Series amplifiers in the same system, such as combining 7224 amplifiers with 7548 amplifiers.
7000-SERIES MULTI-AMP CONFIGURATION GUIDE 3 Series Systems Configuration and Wiring Choosing Single-Ended or Differential Configuration for Two-amplifier Systems Series amplifier systems can be configured with the load ground-reference (single-ended output) or floating (differential output). Refer to Figure 3.1 and use the following guidelines to select a Single-Ended or a Differential configuration.
Configure Amplifiers’ Main Boards for Slave Operation 7000-Series amplifiers are configured by default for use as stand- alone (or Master) amplifiers. When creating a Series multiple amplifier Do not attempt to access the Main Board system, you must also configure each amplifier’s main board for Slave...
7000-SERIES MULTI-AMP CONFIGURATION GUIDE 3.4.1 Accessing the Main Board on 7224 Amplifiers 7224 amplifiers contain an Access Panel built into the top cover to allow easy access to the amplifier main board for configuration of the Master/Slave setting. IMPORTANT: Before removing the Access Panel, make sure the amplifier is turned off for at least 3-5 minutes and the AC mains are disconnected.
Locate the Series configuration that you have selected to meet your application requirements: Section 3.8 for a Two-in-Series – Differential configuration or Section 3.9 for a Two-in-Series – Open-Ended configuration. Then follow the steps provided to wire and test your 7000-Series Multi-amp System. Two in Series – Differential Complete the following procedures to connect your amplifiers for Two in Series - Differential operation.
7000-SERIES MULTI-AMP CONFIGURATION GUIDE 3.8.3 Connect Load and Test System Output Power down the amplifiers. Connect the two output wires leading from the MASTER and SLAVE OUTPUT connectors to your load. Power up both amplifiers and allow them to come to the Ready state.
7000-SERIES MULTI-AMP CONFIGURATION GUIDE Figure 3.10 – Verifying System Gain Figure 3.11 – Two Amplifiers in Series – Differential Configuration Information subject to change 97-8002465_06-09-14...
10 mVdc. See Figure 3.13. NOTE: If any amplifier’s DC offset is greater than 10 mVdc, the amplifier may require servicing. Contact AE Techron Technical Support. On the Master amplifier only, press the Stop button to place the amplifier in Standby mode.
7000-SERIES MULTI-AMP CONFIGURATION GUIDE 3.9.3 Connect Amplifiers and Load Power down the amplifiers. Connect the two output wires leading from the MASTER amplifier’s COM/SAMPLED COMMON connector and last SLAVE amplifier’s OUTPUT connector to your load. Power up all amplifiers and allow them to come to the Ready state.
7000-SERIES MULTI-AMP CONFIGURATION GUIDE Figure 3.15 – Verifying System Gain Figure 3.16 – Two Amplifiers in Series – Single-Ended Configuration 97-8002465_06-09-14 Information subject to change...
7000-SERIES MULTI-AMP CONFIGURATION GUIDE Figure 3.17 – Three Amplifiers in Series – Single-Ended Configuration Information subject to change 97-8002465_06-09-14...
7000-SERIES MULTI-AMP CONFIGURATION GUIDE 4 Parallel Systems Configuration, Wiring and Balancing Parallel multi-amp configurations require a ballast resistor (two resistors for 7796 models) to be mounted on each amplifier’s back panel and connected to the amplifier’s OUTPUT connector. Complete the following steps for each...
Balancing of 7000-Series amplifiers requires access to the amplifier main boards. Note that the main boards installed in the 7224, 7548 and 7796 models are identical, but the method for accessing the main board varies between models.
7000-SERIES MULTI-AMP CONFIGURATION GUIDE On the amplifier main board, locate the connector that connects the external gain control to the main board by following the wire leading from the gain control (see Figure 4.6). Pull gently upward to remove the 3-pin connector from the main board.
7000-SERIES MULTI-AMP CONFIGURATION GUIDE Ensure that the inputs of all of the amplifiers are terminated by using a resistor-terminated barrier block connector (see Figure 4.9) or similar device. Verify Interlock Operation Power up each amplifier by switching to ON the front-panel...
7000-SERIES MULTI-AMP CONFIGURATION GUIDE Figure 4.12 – Wiring the Paralleled Input Wire Figure 4.13 – Optional BNC Parallel Input Wiring (Three in Parallel shown) Figure 4.11 – Wiring and Test Points for DC Offset 97-8002465_06-09-14 Information subject to change...
7000-SERIES MULTI-AMP CONFIGURATION GUIDE Verify and Adjust Amplifier Gain On the main board of each amplifier, locate the Amp Gain Trim (R210) (see Figure 4.10). Connect a digital voltmeter set to AC volts between the OUTPUT and COM terminals of the first amplifier.
7000-SERIES MULTI-AMP CONFIGURATION GUIDE 4.10 Amplifier Gain Matching Connect a digital voltmeter set to AC volts between the positive outputs of the first and the second amplifier (see Figure 4.15). Adjust Amp Gain Trim (R210) on the second amplifier for minimum AC voltage (millivolts).
7000-SERIES MULTI-AMP CONFIGURATION GUIDE 4.11 Verify Minimal Circulating Currents Power down the amplifiers. On each amplifier, connect one ring terminal end of your RED output cable to the ballast resistor on each amplifier back panel. Note: Do not connect the LOAD at this time.
7000-SERIES MULTI-AMP CONFIGURATION GUIDE Appendix A: Wire Current-Carrying Capacity Wire size or gauge should be selected to exceed the expected current it will carry. The chart below shows the minimum matching requirements of wire gauge and continuous duty amperage limits.
7000-SERIES MULTI-AMP CONFIGURATION GUIDE Appendix B: Critical Wire Lengths in Parallel Systems In Parallel applications, the output wiring branches to each amplifier should match within ± ¼ inch. Figure B-1 – Critical Wire Lengths in Parallel Systems Information subject to change...
7000-SERIES MULTI-AMP CONFIGURATION GUIDE Appendix C: Building Parallel System Output Cables The Parallel Wiring Kits available through AE Techron include pre-built cables to be used for Output connections. This section describes how to build your own output cables, if you so choose.
Appendix D: Building the DB-25 Interlock Cable Parallel Wiring Kits are available through AE Techron that include a pre-built cable to be used for the Interlock connections. This section describes how to build your own DB-25 cable, if you so choose.
7000-SERIES MULTI-AMP CONFIGURATION GUIDE Appendix E: Returning Slave Amplifiers to Stand-Alone Use The configuration settings required for Series system operation must be returned to the factory-default settings before a Slave amplifier can be used as a stand-alone amplifier. To reconfigure your Slave amplifiers for stand-alone use, complete the following.
SIM-BNC-OPTOC card is configured for stand-alone/master use, so the setting of this jumpers will not affect stand-alone operation. 7000-Series amplifiers can operate as stand-alone amplifiers using the SIM-BNC-OPTOC as the input card. Or, if you prefer, the SIM-BNC-OPTOC card can be removed and the standard SIM-BNC input card re-installed for stand-alone use.
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