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Copyright 2003 by Tabor Electronics Ltd. Printed in Israel. All rights reserved. This book or parts thereof may
not be reproduced in any form without written permission of the publisher.
User Manual
Model 9250
Dual Channel/Differential
Power Amplifier
Publication No. 041210
Tabor Electronics Ltd.
Tabor Electronics Ltd.
P.O. Box 404, Tel Hanan Israel 20302
Tel: +972-4-821-3393, FAX: +972-4-821-3388
PUBLICATION DATE: December 10, 2004
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Table of Contents
Related Manuals for Tabor Electronics 9250
Summary of Contents for Tabor Electronics 9250
- Page 1 P.O. Box 404, Tel Hanan Israel 20302 Tel: +972-4-821-3393, FAX: +972-4-821-3388 PUBLICATION DATE: December 10, 2004 Copyright 2003 by Tabor Electronics Ltd. Printed in Israel. All rights reserved. This book or parts thereof may not be reproduced in any form without written permission of the publisher.
- Page 2 Authorization is required from Tabor Electronics before you send us your product for service or calibration. Call your nearest Tabor Electronics support facility. A list is located on the last page of this manual. If you are unsure where to call, contact Tabor Electronics Ltd. Tel Hanan, Israel at 972-4-821-3393 or via fax at 972-4- 821-3388.
- Page 3 FOR YOUR SAFETY Before undertaking any troubleshooting, maintenance or exploratory procedure, read care- fully the WARNINGS and CAUTION notices. This equipment contains voltage hazardous to human life and safety, and is capable of inflicting personal injury. If this instrument is to be powered from the AC line (mains) through an auto- transformer, ensure the common connector is connected to the neutral (earth pole) of the power supply.
- Page 4 DECLARATION OF CONFORMITY We: Tabor Electronics Ltd. 9 Hatasia Street, Tel Hanan ISRAEL 36888 declare, that the 40Vp-p Signal Amplifier Model 9250 meet the intent of Directive 89/336/EEC for Electromagnetic Compatibility and the requirements of the Low Voltage Directive 73/23/EEC amended by 93/68/EEC.
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Page 5: Table Of Contents
Safety Precautions ..............................2-2 Performance Checks ............................2-3 Operating Environment............................2-3 Power Requirements ............................2-3 Grounding Requirements .............................2-4 Long Term Storage or Repackaging for Shipment ..................2-4 Preparation for Use ...............................2-5 Installation................................2-5 Factory Configuration of the 9250 Settings .......................2-5 Field Configuration of the 9250 Settings......................2-6... - Page 6 Special Handling of Static Sensitive Devices ....................3-3 Cleaning ..................................3-4 Repair and Replacement............................3-4 Performance Checks.............................3-5 Environmental Conditions ............................3-5 Warm-up Period..............................3-5 9250 Configuration for the Tests ..........................3-5 Recommended Test Equipment..........................3-5 Performance Check Procedures .........................3-6 Input/Output Impedance ............................3-6 Test Results................................3-6 Gain Accuracy................................3-6 Test Results................................3-7 Test Results................................3-7...
- Page 7 List of Figures Figure 1 1, The Model 9250..........................1-3 Figure 1 2, The 9250 Rear Panel........................1-8 Figure 2 1, Field Modification of Channel 1 Input Impedance ................2-7 List of Tables Table 2 1, Input Impedance Jumpers.........................2-7 Table 2 2, Output Impedance Jumpers......................2-7 Table 2 3, Input coupling Jumpers........................2-8...
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Page 9: Chapter 1 - Portrayal
It also and provides description of all features available with the instrument. Introduction The Model 9250, as shown in Figure 1-1, is a bench-top, 2U, half 19” rack size, fully metal case dual channel amplifier. The instrument can be configured to be used as two, single-ended independent channels, or as a one input with two differential outputs. -
Page 10: 9250 Feature Highlights
25Ω, 37.5Ω, or 300Ω for differential drive of 50Ω, 75Ω, or 600Ω loads. Using the differential mode, the 9250 does not sacrifice accuracy, nor does it sacrifice bandwidth. The 9250 has two additional inputs for each channel allowing summation of two signals and providing an external control of DC level offset. -
Page 11: Functional
Figure 1-1, The Model 9250 Detailed functional description of the features, operation and Functional options available with the 9250 is given in the following paragraphs. Description The wideband amplifier can be ordered with different configurations such as input/output impedance, gain, etc. Therefore read the... -
Page 12: Specifications
20°C to 30°C. Specifications outside of the temperature range are degraded by 0.1% per °C. The 9250 has 4 BNC connectors on its front panel, two for each Front Panel channel. Two are marked INPUT and the other two are marked Connectors OUTPUT. -
Page 13: Channel 2 Input
User Manual 9250 Note Channel 1 Input only is used when the Model 9250 is configured to operate in differential mode. Channel 2 Input This input connector accepts signals within the range of DC to over 20 MHz and amplifies them by a fixed gain. The gain is normally x10 however, this number may be different if you ordered the amplifier with different gain setting. -
Page 14: Channel 2 Output
Channel 2 Output The channel 2 output connector outputs amplified signals. When the 9250 is configured as two separate amplifiers, this output generates amplified signals that are applied to the channel 2 input connector. If the instrument is configured for differential output, this channel generates an inverted signal at 180°... -
Page 15: Front Panel
The 9250 has 2 indicators on its front panel. The POWER LED will Front Panel light as soon as you press the switch to power up the 9250. An Indicators illuminated power light designates power is applied to the instrument and you should expect to have signal at its output connector(s). -
Page 16: Line Receptacle And Fuse
Appendix A to avoid damaging the amplifier circuits. With normal configuration, this input is used for driving the front panel output for channel 1 only. When the 9250 is configured for differential outputs, channel 2 auxiliary inputs are disabled and only channel 1 signal is amplified. -
Page 17: Auxiliary Inputs Channel 2
Appendix A to avoid damaging the amplifier circuits. With normal configuration, this input is used for driving the front panel output for channel 2 only. When the 9250 is configured for differential outputs, these inputs are disabled and only channel 1 signal is amplified. -
Page 18: Operating
User Manual 9250 Being a passive device, there are no controls, nor computer Operating programming required to operate the Model 9250. The following Instructions procedure is recommended for proper operation of the power amplifier: 1. Make sure your box is configured for input and output impedance and gain 2. -
Page 19: Chapter 2 - Installation
Chapter 2 CONFIGURING the INSTRUMENT Installation This chapter contains information and instructions necessary to prepare the Model 9250 for operation. Details are provided for initial Overview inspection, grounding safety requirements, repackaging instructions for storage or shipment, installation information and Ethernet address configuration. -
Page 20: Performance Checks
User Manual 9250 WARNING For maximum safety, do not touch the product, test ca- bles, or any other instrument parts while power is ap- plied to the circuit under test. ALWAYS remove power from the entire test system before connecting cables or... -
Page 21: Operating Environment
User Manual 9250 Operating The 9250 is intended for operation on the bench or inside a rack of instruments. It is intended for indoor use only and should be Environment operated in a clean, dry environment with an ambient temperature within the range of 0 °C to 50 °C. -
Page 22: Long Term Storage Or Repackaging For Shipment
Failure to adhere to this limitation may damage the 9250 and the surrounding equipment connected to its I/O connectors. Long Term Storage If the instrument is to be stored for a long period of time or shipped to a service center, proceed as directed below. -
Page 23: Preparation For Use
Gain The default gain setting is x10. The 9250 can be ordered with different gain values up to x20. Bear in mind that gain x bandwidth product remains constant and therefore, you should expect proportional reduction in bandwidth if the gain of the amplifier is increased above x10. -
Page 24: Field Configuration Of The 9250 Settings
The default configuration is single-ended. With this configuration, there are two independent channels that amplify signals that are applied to the channel 1 and 2 inputs. The 9250 can be ordered with differential outputs; In this case, channel 2 input is disabled and channel 1 output is amplified and routed differentially to both channels 1 and 2. -
Page 25: Figure 2 1, Field Modification Of Channel 1 Input Impedance
J10 1-2 Configure Input/Output Coupling The default input/output coupling is DC. Before you change the 9250 input/output coupling settings, identify first the jumper location for all of the inputs and outputs. When the jumpers are on the links, the path is DC coupled. -
Page 26: Table 2 3, Input Coupling Jumpers
User Manual 9250 Table 2-3, Input coupling Jumpers Input Aux CH1 Aux CH2 Link Table 2-4 , Output coupling Jumpers Impedance Link Configure Single-ended or Differential Outputs The default configuration is single-ended. If you order the amplifier with differential outputs, channel 2 input is disabled and channel 1 output is amplified and routed differentially to both channels 1 and 2. -
Page 27: What's In This Chapter
Chapter troubleshoot the Model 9250 Universal Waveform Generator. WARNING The procedures described in this section are for use only by qualified service personnel. Many of the steps covered in this section may expose the individual to po-... -
Page 28: Special Handling Of Static Sensitive Devices
Once the device is installed on the PC board, the device is adequately protected and normal handling may resume. The Model 9250 should be cleaned as often as operating conditions Cleaning require. To clean the instrument, use the following procedure: Thoroughly clean the inside and outside of the instrument. -
Page 29: Repair And Replacement
SOLDER - WICK, size 3. Always replace a component with an exact duplicate as speci- fied in the parts list. The performance of the 9250 should be checked to verify proper Performance operation of the instrument and should normally be used:... -
Page 30: Warm-Up Period
Warm-up Period Most instruments are subject to small amount of drifts when first turned on. To ensure accuracy, turn on the power to the Model 9250 and allow it to warm-up for at least 10 minutes before beginning the performance test procedure. -
Page 31: Input/Output Impedance
User Manual 9250 Input/Output Equipment: DMM Impedance Preparation: 1. Perform test with the 9250 placed on the desk, power re- moved Test Procedure: 1. Set DMM to Resistance measurements and 200Ω Range. Connect the DMM probes across the 9250 channel 1 input and verify DMM reading of 50Ω, ±2%... -
Page 32: Test Results
Square wave Frequency: 1MHz Amplitude: 2Vp-p 23. Connect the function generator to the 9250 channel 1/2 input Test Procedure 1. Perform Square wave Characteristics tests on both channels using Table 3-2 Table 3- 32 , Square wave Characteristics Tests Oscilloscope Reading... -
Page 33: Output Distortion
User Manual 9250 Output Distortion Equipment: Distortion Analyzer, Function Generator Preparation: 24. Connect the 9250 Channel 1/2 outputs to the distortion ana- lyzer input. Use 50Ω feedthrough termination at the distortion analyzer input 25. Configure the function generator as follows:... -
Page 34: Table 3 4, Front Panel Sine Wave Spectral Purity Test
User Manual 9250 Table 3-4, Front Panel Sine wave Spectral Purity Test Spectrum Analyzer Sine Freq Reading Limits Start Stop CH 1 CH 2 Pass Fail 1MHz >55dBc 100K 5MHz >40dBc 10MHz >35dBc 50MHz >22dBc 300M 3-8 Portrayal... -
Page 35: Adjustments
Conditions of 25°C, ±5°C and at relative humidity of less than 80%. Turn on the power to the 9250 and allow it to warm up for at least 30 minutes before beginning the adjustment procedure. If the instrument has been subjected to conditions outside these ranges, allow at least one additional hour for the instrument to stabilize before beginning the adjustment procedure. -
Page 36: Adjustment Procedures
1.6Vp-p (may vary depending on the configured gain) 40. Connect the waveform generator output to the 9250 channel 1 input 41. Connect the 9250 channel 1 through the x10 attenuator to the oscilloscope 42. Set oscilloscope to dc coupling and 50Ω termination Adjustment: 1. -
Page 37: Ch1 High Frequency Response
1.6Vp-p (may vary depending on the configured gain) 54. Connect the waveform generator output to the 9250 channel 1 input 55. Connect the 9250 channel 1 through the x10 attenuator to the oscilloscope 56. Set oscilloscope to dc coupling and 50Ω termination Adjustment: 1. -
Page 38: Channel 1, Auxiliary Offset Adjustment
71. Connect the waveform generator channel 2 output to the 9250, rear panel Channel 1 DC Offset auxiliary input 72. Connect the 9250 channel 1 through the x10 attenuator to the oscilloscope 73. Set oscilloscope to dc coupling and 50Ω termination Adjustment: 1. -
Page 39: Appendix A - Specifications
Appendix A 9250 SPECIFICATIONS (preliminary) Input Characteristics Number of Channels 2 with single-ended outputs; 1 with differential outputs Connectors Impedance 50Ω, 75Ω, or 1MΩ Coupling DC or AC Damage Level 12Vp-p (-6V to +6V peaks) Frequency Range DC to 15MHz (full power bandwidth), DC coupled, 50Ω input/output impedance;... - Page 40 Weight: Approximately 7Lbs Signal Ground Grounded to case ground EMC Certification CE marked MTBF per MIL-HDBK-217E, 25 °C, Ground Benign Reliability Safety Designed to meet IEC EN61010-1, UL 3111-1 Workmanship Std. Conform to IPC-A-610D Warranty: 3 years standard; Extended warranty available upon request Environmental 0 °C - 50 °C, RH 80% (non-condensing) Operating Temperature...
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